linux/drivers/scsi/tmscsim.c
<<
>>
Prefs
   1/************************************************************************
   2 *      FILE NAME : TMSCSIM.C                                           *
   3 *           BY   : C.L. Huang,  ching@tekram.com.tw                    *
   4 *      Description: Device Driver for Tekram DC-390(T) PCI SCSI        *
   5 *                   Bus Master Host Adapter                            *
   6 * (C)Copyright 1995-1996 Tekram Technology Co., Ltd.                   *
   7 ************************************************************************
   8 * (C) Copyright: put under GNU GPL in 10/96                            *
   9 *                              (see Documentation/scsi/tmscsim.txt)    *
  10 ************************************************************************
  11 * $Id: tmscsim.c,v 2.60.2.30 2000/12/20 01:07:12 garloff Exp $         *
  12 *      Enhancements and bugfixes by                                    *
  13 *      Kurt Garloff <kurt@garloff.de>  <garloff@suse.de>               *
  14 ************************************************************************
  15 *      HISTORY:                                                        *
  16 *                                                                      *
  17 *      REV#    DATE    NAME    DESCRIPTION                             *
  18 *      1.00  96/04/24  CLH     First release                           *
  19 *      1.01  96/06/12  CLH     Fixed bug of Media Change for Removable *
  20 *                              Device, scan all LUN. Support Pre2.0.10 *
  21 *      1.02  96/06/18  CLH     Fixed bug of Command timeout ...        *
  22 *      1.03  96/09/25  KG      Added tmscsim_proc_info()               *
  23 *      1.04  96/10/11  CLH     Updating for support KV 2.0.x           *
  24 *      1.05  96/10/18  KG      Fixed bug in DC390_abort(null ptr deref)*
  25 *      1.06  96/10/25  KG      Fixed module support                    *
  26 *      1.07  96/11/09  KG      Fixed tmscsim_proc_info()               *
  27 *      1.08  96/11/18  KG      Fixed null ptr in DC390_Disconnect()    *
  28 *      1.09  96/11/30  KG      Added register the allocated IO space   *
  29 *      1.10  96/12/05  CLH     Modified tmscsim_proc_info(), and reset *
  30 *                              pending interrupt in DC390_detect()     *
  31 *      1.11  97/02/05  KG/CLH  Fixeds problem with partitions greater  *
  32 *                              than 1GB                                *
  33 *      1.12  98/02/15  MJ      Rewritten PCI probing                   *
  34 *      1.13  98/04/08  KG      Support for non DC390, __initfunc decls,*
  35 *                              changed max devs from 10 to 16          *
  36 *      1.14a 98/05/05  KG      Dynamic DCB allocation, add-single-dev  *
  37 *                              for LUNs if LUN_SCAN (BIOS) not set     *
  38 *                              runtime config using /proc interface    *
  39 *      1.14b 98/05/06  KG      eliminated cli (); sti (); spinlocks    *
  40 *      1.14c 98/05/07  KG      2.0.x compatibility                     *
  41 *      1.20a 98/05/07  KG      changed names of funcs to be consistent *
  42 *                              DC390_ (entry points), dc390_ (internal)*
  43 *                              reworked locking                        *
  44 *      1.20b 98/05/12  KG      bugs: version, kfree, _ctmp             *
  45 *                              debug output                            *
  46 *      1.20c 98/05/12  KG      bugs: kfree, parsing, EEpromDefaults    *
  47 *      1.20d 98/05/14  KG      bugs: list linkage, clear flag after    *
  48 *                              reset on startup, code cleanup          *
  49 *      1.20e 98/05/15  KG      spinlock comments, name space cleanup   *
  50 *                              pLastDCB now part of ACB structure      *
  51 *                              added stats, timeout for 2.1, TagQ bug  *
  52 *                              RESET and INQUIRY interface commands    *
  53 *      1.20f 98/05/18  KG      spinlocks fixes, max_lun fix, free DCBs *
  54 *                              for missing LUNs, pending int           *
  55 *      1.20g 98/05/19  KG      Clean up: Avoid short                   *
  56 *      1.20h 98/05/21  KG      Remove AdaptSCSIID, max_lun ...         *
  57 *      1.20i 98/05/21  KG      Aiiie: Bug with TagQMask                *
  58 *      1.20j 98/05/24  KG      Handle STAT_BUSY, handle pACB->pLinkDCB *
  59 *                              == 0 in remove_dev and DoingSRB_Done    *
  60 *      1.20k 98/05/25  KG      DMA_INT (experimental)                  *
  61 *      1.20l 98/05/27  KG      remove DMA_INT; DMA_IDLE cmds added;    *
  62 *      1.20m 98/06/10  KG      glitch configurable; made some global   *
  63 *                              vars part of ACB; use DC390_readX       *
  64 *      1.20n 98/06/11  KG      startup params                          *
  65 *      1.20o 98/06/15  KG      added TagMaxNum to boot/module params   *
  66 *                              Device Nr -> Idx, TagMaxNum power of 2  *
  67 *      1.20p 98/06/17  KG      Docu updates. Reset depends on settings *
  68 *                              pci_set_master added; 2.0.xx: pcibios_* *
  69 *                              used instead of MechNum things ...      *
  70 *      1.20q 98/06/23  KG      Changed defaults. Added debug code for  *
  71 *                              removable media and fixed it. TagMaxNum *
  72 *                              fixed for DC390. Locking: ACB, DRV for  *
  73 *                              better IRQ sharing. Spelling: Queueing  *
  74 *                              Parsing and glitch_cfg changes. Display *
  75 *                              real SyncSpeed value. Made DisConn      *
  76 *                              functional (!)                          *
  77 *      1.20r 98/06/30  KG      Debug macros, allow disabling DsCn, set *
  78 *                              BIT4 in CtrlR4, EN_PAGE_INT, 2.0 module *
  79 *                              param -1 fixed.                         *
  80 *      1.20s 98/08/20  KG      Debug info on abort(), try to check PCI,*
  81 *                              phys_to_bus instead of phys_to_virt,    *
  82 *                              fixed sel. process, fixed locking,      *
  83 *                              added MODULE_XXX infos, changed IRQ     *
  84 *                              request flags, disable DMA_INT          *
  85 *      1.20t 98/09/07  KG      TagQ report fixed; Write Erase DMA Stat;*
  86 *                              initfunc -> __init; better abort;       *
  87 *                              Timeout for XFER_DONE & BLAST_COMPLETE; *
  88 *                              Allow up to 33 commands being processed *
  89 *      2.0a  98/10/14  KG      Max Cmnds back to 17. DMA_Stat clearing *
  90 *                              all flags. Clear within while() loops   *
  91 *                              in DataIn_0/Out_0. Null ptr in dumpinfo *
  92 *                              for pSRB==0. Better locking during init.*
  93 *                              bios_param() now respects part. table.  *
  94 *      2.0b  98/10/24  KG      Docu fixes. Timeout Msg in DMA Blast.   *
  95 *                              Disallow illegal idx in INQUIRY/REMOVE  *
  96 *      2.0c  98/11/19  KG      Cleaned up detect/init for SMP boxes,   *
  97 *                              Write Erase DMA (1.20t) caused problems *
  98 *      2.0d  98/12/25  KG      Christmas release ;-) Message handling  *
  99 *                              completely reworked. Handle target ini- *
 100 *                              tiated SDTR correctly.                  *
 101 *      2.0d1 99/01/25  KG      Try to handle RESTORE_PTR               *
 102 *      2.0d2 99/02/08  KG      Check for failure of kmalloc, correct   *
 103 *                              inclusion of scsicam.h, DelayReset      *
 104 *      2.0d3 99/05/31  KG      DRIVER_OK -> DID_OK, DID_NO_CONNECT,    *
 105 *                              detect Target mode and warn.            *
 106 *                              pcmd->result handling cleaned up.       *
 107 *      2.0d4 99/06/01  KG      Cleaned selection process. Found bug    *
 108 *                              which prevented more than 16 tags. Now: *
 109 *                              24. SDTR cleanup. Cleaner multi-LUN     *
 110 *                              handling. Don't modify ControlRegs/FIFO *
 111 *                              when connected.                         *
 112 *      2.0d5 99/06/01  KG      Clear DevID, Fix INQUIRY after cfg chg. *
 113 *      2.0d6 99/06/02  KG      Added ADD special command to allow cfg. *
 114 *                              before detection. Reset SYNC_NEGO_DONE  *
 115 *                              after a bus reset.                      *
 116 *      2.0d7 99/06/03  KG      Fixed bugs wrt add,remove commands      *
 117 *      2.0d8 99/06/04  KG      Removed copying of cmnd into CmdBlock.  *
 118 *                              Fixed Oops in _release().               *
 119 *      2.0d9 99/06/06  KG      Also tag queue INQUIRY, T_U_R, ...      *
 120 *                              Allow arb. no. of Tagged Cmnds. Max 32  *
 121 *      2.0d1099/06/20  KG      TagMaxNo changes now honoured! Queueing *
 122 *                              clearified (renamed ..) TagMask handling*
 123 *                              cleaned.                                *
 124 *      2.0d1199/06/28  KG      cmd->result now identical to 2.0d2      *
 125 *      2.0d1299/07/04  KG      Changed order of processing in IRQ      *
 126 *      2.0d1399/07/05  KG      Don't update DCB fields if removed      *
 127 *      2.0d1499/07/05  KG      remove_dev: Move kfree() to the end     *
 128 *      2.0d1599/07/12  KG      use_new_eh_code: 0, ULONG -> UINT where *
 129 *                              appropriate                             *
 130 *      2.0d1699/07/13  KG      Reenable StartSCSI interrupt, Retry msg *
 131 *      2.0d1799/07/15  KG      Remove debug msg. Disable recfg. when   *
 132 *                              there are queued cmnds                  *
 133 *      2.0d1899/07/18  KG      Selection timeout: Don't requeue        *
 134 *      2.0d1999/07/18  KG      Abort: Only call scsi_done if dequeued  *
 135 *      2.0d2099/07/19  KG      Rst_Detect: DoingSRB_Done               *
 136 *      2.0d2199/08/15  KG      dev_id for request/free_irq, cmnd[0] for*
 137 *                              RETRY, SRBdone does DID_ABORT for the   *
 138 *                              cmd passed by DC390_reset()             *
 139 *      2.0d2299/08/25  KG      dev_id fixed. can_queue: 42             *
 140 *      2.0d2399/08/25  KG      Removed some debugging code. dev_id     *
 141 *                              now is set to pACB. Use u8,u16,u32.     *
 142 *      2.0d2499/11/14  KG      Unreg. I/O if failed IRQ alloc. Call    *
 143 *                              done () w/ DID_BAD_TARGET in case of    *
 144 *                              missing DCB. We are old EH!!            *
 145 *      2.0d2500/01/15  KG      2.3.3x compat from Andreas Schultz      *
 146 *                              set unique_id. Disable RETRY message.   *
 147 *      2.0d2600/01/29  KG      Go to new EH.                           *
 148 *      2.0d2700/01/31  KG      ... but maintain 2.0 compat.            *
 149 *                              and fix DCB freeing                     *
 150 *      2.0d2800/02/14  KG      Queue statistics fixed, dump special cmd*
 151 *                              Waiting_Timer for failed StartSCSI      *
 152 *                              New EH: Don't return cmnds to ML on RST *
 153 *                              Use old EH (don't have new EH fns yet)  *
 154 *                              Reset: Unlock, but refuse to queue      *
 155 *                              2.3 __setup function                    *
 156 *      2.0e  00/05/22  KG      Return residual for 2.3                 *
 157 *      2.0e1 00/05/25  KG      Compile fixes for 2.3.99                *
 158 *      2.0e2 00/05/27  KG      Jeff Garzik's pci_enable_device()       *
 159 *      2.0e3 00/09/29  KG      Some 2.4 changes. Don't try Sync Nego   *
 160 *                              before INQUIRY has reported ability.    *
 161 *                              Recognise INQUIRY as scanning command.  *
 162 *      2.0e4 00/10/13  KG      Allow compilation into 2.4 kernel       *
 163 *      2.0e5 00/11/17  KG      Store Inq.flags in DCB                  *
 164 *      2.0e6 00/11/22  KG      2.4 init function (Thx to O.Schumann)   *
 165 *                              2.4 PCI device table (Thx to A.Richter) *
 166 *      2.0e7 00/11/28  KG      Allow overriding of BIOS settings       *
 167 *      2.0f  00/12/20  KG      Handle failed INQUIRYs during scan      *
 168 *      2.1a  03/11/29  GL, KG  Initial fixing for 2.6. Convert to      *
 169 *                              use the current PCI-mapping API, update *
 170 *                              command-queuing.                        *
 171 *      2.1b  04/04/13  GL      Fix for 64-bit platforms                *
 172 *      2.1b1 04/01/31  GL      (applied 05.04) Remove internal         *
 173 *                              command-queuing.                        *
 174 *      2.1b2 04/02/01  CH      (applied 05.04) Fix error-handling      *
 175 *      2.1c  04/05/23  GL      Update to use the new pci_driver API,   *
 176 *                              some scsi EH updates, more cleanup.     *
 177 *      2.1d  04/05/27  GL      Moved setting of scan_devices to        *
 178 *                              slave_alloc/_configure/_destroy, as     *
 179 *                              suggested by CH.                        *
 180 ***********************************************************************/
 181
 182/* DEBUG options */
 183//#define DC390_DEBUG0
 184//#define DC390_DEBUG1
 185//#define DC390_DCBDEBUG
 186//#define DC390_PARSEDEBUG
 187//#define DC390_REMOVABLEDEBUG
 188//#define DC390_LOCKDEBUG
 189
 190//#define NOP do{}while(0)
 191#define C_NOP
 192
 193/* Debug definitions */
 194#ifdef DC390_DEBUG0
 195# define DEBUG0(x) x
 196#else
 197# define DEBUG0(x) C_NOP
 198#endif
 199#ifdef DC390_DEBUG1
 200# define DEBUG1(x) x
 201#else
 202# define DEBUG1(x) C_NOP
 203#endif
 204#ifdef DC390_DCBDEBUG
 205# define DCBDEBUG(x) x
 206#else
 207# define DCBDEBUG(x) C_NOP
 208#endif
 209#ifdef DC390_PARSEDEBUG
 210# define PARSEDEBUG(x) x
 211#else
 212# define PARSEDEBUG(x) C_NOP
 213#endif
 214#ifdef DC390_REMOVABLEDEBUG
 215# define REMOVABLEDEBUG(x) x
 216#else
 217# define REMOVABLEDEBUG(x) C_NOP
 218#endif
 219#define DCBDEBUG1(x) C_NOP
 220
 221#include <linux/module.h>
 222#include <linux/delay.h>
 223#include <linux/signal.h>
 224#include <linux/errno.h>
 225#include <linux/kernel.h>
 226#include <linux/ioport.h>
 227#include <linux/pci.h>
 228#include <linux/proc_fs.h>
 229#include <linux/string.h>
 230#include <linux/mm.h>
 231#include <linux/blkdev.h>
 232#include <linux/timer.h>
 233#include <linux/interrupt.h>
 234#include <linux/init.h>
 235#include <linux/spinlock.h>
 236#include <linux/slab.h>
 237#include <asm/io.h>
 238
 239#include <scsi/scsi.h>
 240#include <scsi/scsi_cmnd.h>
 241#include <scsi/scsi_device.h>
 242#include <scsi/scsi_host.h>
 243#include <scsi/scsicam.h>
 244#include <scsi/scsi_tcq.h>
 245
 246
 247#define DC390_BANNER "Tekram DC390/AM53C974"
 248#define DC390_VERSION "2.1d 2004-05-27"
 249
 250#define PCI_DEVICE_ID_AMD53C974         PCI_DEVICE_ID_AMD_SCSI
 251
 252#include "tmscsim.h"
 253
 254
 255static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 256static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 257static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 258static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 259static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 260static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 261static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 262static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 263static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 264static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 265static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 266static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 267static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 268static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 269
 270static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB );
 271static void dc390_Disconnect( struct dc390_acb* pACB );
 272static void dc390_Reselect( struct dc390_acb* pACB );
 273static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB );
 274static void dc390_ScsiRstDetect( struct dc390_acb* pACB );
 275static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*);
 276static void dc390_dumpinfo(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB);
 277static void dc390_ResetDevParam(struct dc390_acb* pACB);
 278
 279static u32      dc390_laststatus = 0;
 280static u8       dc390_adapterCnt = 0;
 281
 282static int disable_clustering;
 283module_param(disable_clustering, int, S_IRUGO);
 284MODULE_PARM_DESC(disable_clustering, "If you experience problems with your devices, try setting to 1");
 285
 286/* Startup values, to be overriden on the commandline */
 287static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
 288
 289module_param_array(tmscsim, int, NULL, 0);
 290MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
 291MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
 292MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
 293MODULE_LICENSE("GPL");
 294MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
 295
 296static void *dc390_phase0[]={
 297       dc390_DataOut_0,
 298       dc390_DataIn_0,
 299       dc390_Command_0,
 300       dc390_Status_0,
 301       dc390_Nop_0,
 302       dc390_Nop_0,
 303       dc390_MsgOut_0,
 304       dc390_MsgIn_0,
 305       dc390_Nop_1
 306       };
 307
 308static void *dc390_phase1[]={
 309       dc390_DataOutPhase,
 310       dc390_DataInPhase,
 311       dc390_CommandPhase,
 312       dc390_StatusPhase,
 313       dc390_Nop_0,
 314       dc390_Nop_0,
 315       dc390_MsgOutPhase,
 316       dc390_MsgInPhase,
 317       dc390_Nop_1
 318       };
 319
 320#ifdef DC390_DEBUG1
 321static char* dc390_p0_str[] = {
 322       "dc390_DataOut_0",
 323       "dc390_DataIn_0",
 324       "dc390_Command_0",
 325       "dc390_Status_0",
 326       "dc390_Nop_0",
 327       "dc390_Nop_0",
 328       "dc390_MsgOut_0",
 329       "dc390_MsgIn_0",
 330       "dc390_Nop_1"
 331       };
 332     
 333static char* dc390_p1_str[] = {
 334       "dc390_DataOutPhase",
 335       "dc390_DataInPhase",
 336       "dc390_CommandPhase",
 337       "dc390_StatusPhase",
 338       "dc390_Nop_0",
 339       "dc390_Nop_0",
 340       "dc390_MsgOutPhase",
 341       "dc390_MsgInPhase",
 342       "dc390_Nop_1"
 343       };
 344#endif   
 345
 346static u8  dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN];
 347static u8  dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20};
 348static u8  dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20};
 349
 350/***********************************************************************
 351 * Functions for the management of the internal structures 
 352 * (DCBs, SRBs, Queueing)
 353 *
 354 **********************************************************************/
 355static void inline dc390_start_segment(struct dc390_srb* pSRB)
 356{
 357        struct scatterlist *psgl = pSRB->pSegmentList;
 358
 359        /* start new sg segment */
 360        pSRB->SGBusAddr = sg_dma_address(psgl);
 361        pSRB->SGToBeXferLen = sg_dma_len(psgl);
 362}
 363
 364static unsigned long inline dc390_advance_segment(struct dc390_srb* pSRB, u32 residue)
 365{
 366        unsigned long xfer = pSRB->SGToBeXferLen - residue;
 367
 368        /* xfer more bytes transferred */
 369        pSRB->SGBusAddr += xfer;
 370        pSRB->TotalXferredLen += xfer;
 371        pSRB->SGToBeXferLen = residue;
 372
 373        return xfer;
 374}
 375
 376static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun)
 377{
 378   struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL;
 379   while (pDCB->TargetID != id || pDCB->TargetLUN != lun)
 380     {
 381        pDCB = pDCB->pNextDCB;
 382        if (pDCB == pACB->pLinkDCB)
 383             return NULL;
 384     }
 385   DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \
 386                      pDCB, pDCB->TargetID, pDCB->TargetLUN));
 387   return pDCB;
 388}
 389
 390/* Insert SRB oin top of free list */
 391static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB)
 392{
 393    DEBUG0(printk ("DC390: Free SRB %p\n", pSRB));
 394    pSRB->pNextSRB = pACB->pFreeSRB;
 395    pACB->pFreeSRB = pSRB;
 396}
 397
 398static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
 399{
 400    pDCB->GoingSRBCnt++;
 401    DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB));
 402    /* Append to the list of Going commands */
 403    if( pDCB->pGoingSRB )
 404        pDCB->pGoingLast->pNextSRB = pSRB;
 405    else
 406        pDCB->pGoingSRB = pSRB;
 407
 408    pDCB->pGoingLast = pSRB;
 409    /* No next one in sent list */
 410    pSRB->pNextSRB = NULL;
 411}
 412
 413static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
 414{
 415        DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB));
 416   if (pSRB == pDCB->pGoingSRB)
 417        pDCB->pGoingSRB = pSRB->pNextSRB;
 418   else
 419     {
 420        struct dc390_srb* psrb = pDCB->pGoingSRB;
 421        while (psrb && psrb->pNextSRB != pSRB)
 422          psrb = psrb->pNextSRB;
 423        if (!psrb) 
 424          { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; }
 425        psrb->pNextSRB = pSRB->pNextSRB;
 426        if (pSRB == pDCB->pGoingLast)
 427          pDCB->pGoingLast = psrb;
 428     }
 429   pDCB->GoingSRBCnt--;
 430}
 431
 432static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length)
 433{
 434        sg_init_one(sg, addr, length);
 435        return sg;
 436}
 437
 438/* Create pci mapping */
 439static int dc390_pci_map (struct dc390_srb* pSRB)
 440{
 441        int error = 0;
 442        struct scsi_cmnd *pcmd = pSRB->pcmd;
 443        struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
 444        dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
 445
 446        /* Map sense buffer */
 447        if (pSRB->SRBFlag & AUTO_REQSENSE) {
 448                pSRB->pSegmentList      = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, SCSI_SENSE_BUFFERSIZE);
 449                pSRB->SGcount           = pci_map_sg(pdev, pSRB->pSegmentList, 1,
 450                                                     DMA_FROM_DEVICE);
 451                cmdp->saved_dma_handle  = sg_dma_address(pSRB->pSegmentList);
 452
 453                /* TODO: error handling */
 454                if (pSRB->SGcount != 1)
 455                        error = 1;
 456                DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __func__, pcmd->sense_buffer, cmdp->saved_dma_handle));
 457        /* Map SG list */
 458        } else if (scsi_sg_count(pcmd)) {
 459                int nseg;
 460
 461                nseg = scsi_dma_map(pcmd);
 462
 463                pSRB->pSegmentList      = scsi_sglist(pcmd);
 464                pSRB->SGcount           = nseg;
 465
 466                /* TODO: error handling */
 467                if (nseg < 0)
 468                        error = 1;
 469                DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
 470                              __func__, scsi_sglist(pcmd), nseg, scsi_sg_count(pcmd)));
 471        /* Map single segment */
 472        } else
 473                pSRB->SGcount = 0;
 474
 475        return error;
 476}
 477
 478/* Remove pci mapping */
 479static void dc390_pci_unmap (struct dc390_srb* pSRB)
 480{
 481        struct scsi_cmnd *pcmd = pSRB->pcmd;
 482        struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
 483        DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)));
 484
 485        if (pSRB->SRBFlag) {
 486                pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE);
 487                DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __func__, cmdp->saved_dma_handle));
 488        } else {
 489                scsi_dma_unmap(pcmd);
 490                DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n",
 491                              __func__, scsi_sglist(pcmd), scsi_sg_count(pcmd)));
 492        }
 493}
 494
 495static void __inline__
 496dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
 497{
 498        if (pSRB->TagNumber != SCSI_NO_TAG) {
 499                pDCB->TagMask &= ~(1 << pSRB->TagNumber);   /* free tag mask */
 500                pSRB->TagNumber = SCSI_NO_TAG;
 501        }
 502}
 503
 504
 505static int
 506dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
 507{
 508    struct scsi_cmnd *scmd = pSRB->pcmd;
 509    struct scsi_device *sdev = scmd->device;
 510    u8 cmd, disc_allowed, try_sync_nego;
 511    char tag[2];
 512
 513    pSRB->ScsiPhase = SCSI_NOP0;
 514
 515    if (pACB->Connected)
 516    {
 517        // Should not happen normally
 518        printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n",
 519                pSRB->SRBState, pSRB->SRBFlag);
 520        pSRB->SRBState = SRB_READY;
 521        pACB->SelConn++;
 522        return 1;
 523    }
 524    if (time_before (jiffies, pACB->pScsiHost->last_reset))
 525    {
 526        DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n"));
 527        return 1;
 528    }
 529    /* KG: Moved pci mapping here */
 530    dc390_pci_map(pSRB);
 531    /* TODO: error handling */
 532    DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
 533    DC390_write8 (Sync_Period, pDCB->SyncPeriod);
 534    DC390_write8 (Sync_Offset, pDCB->SyncOffset);
 535    DC390_write8 (CtrlReg1, pDCB->CtrlR1);
 536    DC390_write8 (CtrlReg3, pDCB->CtrlR3);
 537    DC390_write8 (CtrlReg4, pDCB->CtrlR4);
 538    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);             /* Flush FIFO */
 539    DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\
 540            scmd->cmnd[0], pDCB->SyncMode));
 541
 542    /* Don't disconnect on AUTO_REQSENSE, cause it might be an
 543     * Contingent Allegiance Condition (6.6), where no tags should be used.
 544     * All other have to be allowed to disconnect to prevent Incorrect 
 545     * Initiator Connection (6.8.2/6.5.2) */
 546    /* Changed KG, 99/06/06 */
 547    if (! (pSRB->SRBFlag & AUTO_REQSENSE))
 548        disc_allowed = pDCB->DevMode & EN_DISCONNECT_;
 549    else
 550        disc_allowed = 0;
 551
 552    if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr &&
 553        (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) &&
 554          !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY))
 555      try_sync_nego = 1;
 556    else
 557      try_sync_nego = 0;
 558
 559    pSRB->MsgCnt = 0;
 560    cmd = SEL_W_ATN;
 561    DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN));
 562    /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */
 563    if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && scsi_populate_tag_msg(scmd, tag)) {
 564        DC390_write8(ScsiFifo, tag[0]);
 565        pDCB->TagMask |= 1 << tag[1];
 566        pSRB->TagNumber = tag[1];
 567        DC390_write8(ScsiFifo, tag[1]);
 568        DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for SRB %p, block tag %02x\n", pSRB, tag[1]));
 569        cmd = SEL_W_ATN3;
 570    } else {
 571        /* No TagQ */
 572//no_tag:
 573        DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for SRB %p, No TagQ\n", disc_allowed ? "" : "o", pSRB));
 574    }
 575
 576    pSRB->SRBState = SRB_START_;
 577
 578    if (try_sync_nego)
 579      { 
 580        u8 Sync_Off = pDCB->SyncOffset;
 581        DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN));
 582        pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE;
 583        pSRB->MsgOutBuf[1] = 3;
 584        pSRB->MsgOutBuf[2] = EXTENDED_SDTR;
 585        pSRB->MsgOutBuf[3] = pDCB->NegoPeriod;
 586        if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET;
 587        pSRB->MsgOutBuf[4] = Sync_Off;
 588        pSRB->MsgCnt = 5;
 589        //pSRB->SRBState = SRB_MSGOUT_;
 590        pSRB->SRBState |= DO_SYNC_NEGO;
 591        cmd = SEL_W_ATN_STOP;
 592      }
 593
 594    /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
 595    if (cmd != SEL_W_ATN_STOP)
 596      {
 597        if( pSRB->SRBFlag & AUTO_REQSENSE )
 598          {
 599            DC390_write8 (ScsiFifo, REQUEST_SENSE);
 600            DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
 601            DC390_write8 (ScsiFifo, 0);
 602            DC390_write8 (ScsiFifo, 0);
 603            DC390_write8 (ScsiFifo, SCSI_SENSE_BUFFERSIZE);
 604            DC390_write8 (ScsiFifo, 0);
 605            DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n"));
 606          }
 607        else    /* write cmnd to bus */ 
 608          {
 609            u8 *ptr; u8 i;
 610            ptr = (u8 *)scmd->cmnd;
 611            for (i = 0; i < scmd->cmd_len; i++)
 612              DC390_write8 (ScsiFifo, *(ptr++));
 613          }
 614      }
 615    DEBUG0(if (pACB->pActiveDCB)        \
 616           printk (KERN_WARNING "DC390: ActiveDCB != 0\n"));
 617    DEBUG0(if (pDCB->pActiveSRB)        \
 618           printk (KERN_WARNING "DC390: ActiveSRB != 0\n"));
 619    //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
 620    if (DC390_read8 (Scsi_Status) & INTERRUPT)
 621    {
 622        dc390_freetag (pDCB, pSRB);
 623        DEBUG0(printk ("DC390: Interrupt during Start SCSI (target %02i-%02i)\n",
 624                scmd->device->id, scmd->device->lun));
 625        pSRB->SRBState = SRB_READY;
 626        //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
 627        pACB->SelLost++;
 628        return 1;
 629    }
 630    DC390_write8 (ScsiCmd, cmd);
 631    pACB->pActiveDCB = pDCB;
 632    pDCB->pActiveSRB = pSRB;
 633    pACB->Connected = 1;
 634    pSRB->ScsiPhase = SCSI_NOP1;
 635    return 0;
 636}
 637
 638
 639static void __inline__
 640dc390_InvalidCmd(struct dc390_acb* pACB)
 641{
 642        if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT))
 643                DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
 644}
 645
 646
 647static irqreturn_t __inline__
 648DC390_Interrupt(void *dev_id)
 649{
 650    struct dc390_acb *pACB = dev_id;
 651    struct dc390_dcb *pDCB;
 652    struct dc390_srb *pSRB;
 653    u8  sstatus=0;
 654    u8  phase;
 655    void   (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *);
 656    u8  istate, istatus;
 657
 658    sstatus = DC390_read8 (Scsi_Status);
 659    if( !(sstatus & INTERRUPT) )
 660        return IRQ_NONE;
 661
 662    DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus));
 663
 664    //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
 665    //dstatus = DC390_read8 (DMA_Status);
 666    //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
 667
 668    spin_lock_irq(pACB->pScsiHost->host_lock);
 669
 670    istate = DC390_read8 (Intern_State);
 671    istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */
 672
 673    DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus));
 674    dc390_laststatus &= ~0x00ffffff;
 675    dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus;
 676
 677    if (sstatus & ILLEGAL_OP_ERR)
 678    {
 679        printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus);
 680        dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB);
 681    }
 682        
 683    else if (istatus &  INVALID_CMD)
 684    {
 685        printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus);
 686        dc390_InvalidCmd( pACB );
 687        goto unlock;
 688    }
 689
 690    if (istatus &  SCSI_RESET)
 691    {
 692        dc390_ScsiRstDetect( pACB );
 693        goto unlock;
 694    }
 695
 696    if (istatus &  DISCONNECTED)
 697    {
 698        dc390_Disconnect( pACB );
 699        goto unlock;
 700    }
 701
 702    if (istatus &  RESELECTED)
 703    {
 704        dc390_Reselect( pACB );
 705        goto unlock;
 706    }
 707
 708    else if (istatus & (SELECTED | SEL_ATTENTION))
 709    {
 710        printk (KERN_ERR "DC390: Target mode not supported!\n");
 711        goto unlock;
 712    }
 713
 714    if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) )
 715    {
 716        pDCB = pACB->pActiveDCB;
 717        if (!pDCB)
 718        {
 719                printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
 720                goto unlock;
 721        }
 722        pSRB = pDCB->pActiveSRB;
 723        if( pDCB->DCBFlag & ABORT_DEV_ )
 724          dc390_EnableMsgOut_Abort (pACB, pSRB);
 725
 726        phase = pSRB->ScsiPhase;
 727        DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus));
 728        stateV = (void *) dc390_phase0[phase];
 729        ( *stateV )( pACB, pSRB, &sstatus );
 730
 731        pSRB->ScsiPhase = sstatus & 7;
 732        phase = (u8) sstatus & 7;
 733        DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus));
 734        stateV = (void *) dc390_phase1[phase];
 735        ( *stateV )( pACB, pSRB, &sstatus );
 736    }
 737
 738 unlock:
 739    spin_unlock_irq(pACB->pScsiHost->host_lock);
 740    return IRQ_HANDLED;
 741}
 742
 743static irqreturn_t do_DC390_Interrupt(int irq, void *dev_id)
 744{
 745    irqreturn_t ret;
 746    DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
 747    /* Locking is done in DC390_Interrupt */
 748    ret = DC390_Interrupt(dev_id);
 749    DEBUG1(printk (".. IRQ returned\n"));
 750    return ret;
 751}
 752
 753static void
 754dc390_DataOut_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
 755{
 756    u8   sstatus;
 757    u32  ResidCnt;
 758    u8   dstate = 0;
 759
 760    sstatus = *psstatus;
 761
 762    if( !(pSRB->SRBState & SRB_XFERPAD) )
 763    {
 764        if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) )
 765            pSRB->SRBStatus |= PARITY_ERROR;
 766
 767        if( sstatus & COUNT_2_ZERO )
 768        {
 769            unsigned long timeout = jiffies + HZ;
 770
 771            /* Function called from the ISR with the host_lock held and interrupts disabled */
 772            if (pSRB->SGToBeXferLen)
 773                while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
 774                    spin_unlock_irq(pACB->pScsiHost->host_lock);
 775                    udelay(50);
 776                    spin_lock_irq(pACB->pScsiHost->host_lock);
 777                }
 778            if (!time_before(jiffies, timeout))
 779                printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n",
 780                        DC390_read32 (DMA_Wk_ByteCntr));
 781            dc390_laststatus &= ~0xff000000;
 782            dc390_laststatus |= dstate << 24;
 783            pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
 784            pSRB->SGIndex++;
 785            if( pSRB->SGIndex < pSRB->SGcount )
 786            {
 787                pSRB->pSegmentList++;
 788
 789                dc390_start_segment(pSRB);
 790            }
 791            else
 792                pSRB->SGToBeXferLen = 0;
 793        }
 794        else
 795        {
 796            ResidCnt = ((u32) DC390_read8 (Current_Fifo) & 0x1f) +
 797                    (((u32) DC390_read8 (CtcReg_High) << 16) |
 798                     ((u32) DC390_read8 (CtcReg_Mid) << 8) |
 799                     (u32) DC390_read8 (CtcReg_Low));
 800
 801            dc390_advance_segment(pSRB, ResidCnt);
 802        }
 803    }
 804    if ((*psstatus & 7) != SCSI_DATA_OUT)
 805    {
 806            DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD);
 807            DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
 808    }       
 809}
 810
 811static void
 812dc390_DataIn_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
 813{
 814    u8   sstatus, residual, bval;
 815    u32  ResidCnt, i;
 816    unsigned long   xferCnt;
 817
 818    sstatus = *psstatus;
 819
 820    if( !(pSRB->SRBState & SRB_XFERPAD) )
 821    {
 822        if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR))
 823            pSRB->SRBStatus |= PARITY_ERROR;
 824
 825        if( sstatus & COUNT_2_ZERO )
 826        {
 827            int dstate = 0;
 828            unsigned long timeout = jiffies + HZ;
 829
 830            /* Function called from the ISR with the host_lock held and interrupts disabled */
 831            if (pSRB->SGToBeXferLen)
 832                while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
 833                    spin_unlock_irq(pACB->pScsiHost->host_lock);
 834                    udelay(50);
 835                    spin_lock_irq(pACB->pScsiHost->host_lock);
 836                }
 837            if (!time_before(jiffies, timeout)) {
 838                printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n",
 839                        DC390_read32 (DMA_Wk_ByteCntr));
 840                printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate);
 841            }
 842            dc390_laststatus &= ~0xff000000;
 843            dc390_laststatus |= dstate << 24;
 844            DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \
 845                + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8)               \
 846                + ((unsigned long) DC390_read8 (CtcReg_Low)));
 847            DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%u,ToBeXfer=%lu),", ResidCnt, pSRB->SGToBeXferLen));
 848
 849            DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
 850
 851            pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
 852            pSRB->SGIndex++;
 853            if( pSRB->SGIndex < pSRB->SGcount )
 854            {
 855                pSRB->pSegmentList++;
 856
 857                dc390_start_segment(pSRB);
 858            }
 859            else
 860                pSRB->SGToBeXferLen = 0;
 861        }
 862        else    /* phase changed */
 863        {
 864            residual = 0;
 865            bval = DC390_read8 (Current_Fifo);
 866            while( bval & 0x1f )
 867            {
 868                DEBUG1(printk (KERN_DEBUG "Check for residuals,"));
 869                if( (bval & 0x1f) == 1 )
 870                {
 871                    for(i=0; i < 0x100; i++)
 872                    {
 873                        bval = DC390_read8 (Current_Fifo);
 874                        if( !(bval & 0x1f) )
 875                            goto din_1;
 876                        else if( i == 0x0ff )
 877                        {
 878                            residual = 1;   /* ;1 residual byte */
 879                            goto din_1;
 880                        }
 881                    }
 882                }
 883                else
 884                    bval = DC390_read8 (Current_Fifo);
 885            }
 886din_1:
 887            DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD);
 888            for (i = 0xa000; i; i--)
 889            {
 890                bval = DC390_read8 (DMA_Status);
 891                if (bval & BLAST_COMPLETE)
 892                    break;
 893            }
 894            /* It seems a DMA Blast abort isn't that bad ... */
 895            if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n");
 896            //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
 897            dc390_laststatus &= ~0xff000000;
 898            dc390_laststatus |= bval << 24;
 899
 900            DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval));
 901            ResidCnt = (((u32) DC390_read8 (CtcReg_High) << 16) |
 902                        ((u32) DC390_read8 (CtcReg_Mid) << 8)) |
 903                    (u32) DC390_read8 (CtcReg_Low);
 904
 905            xferCnt = dc390_advance_segment(pSRB, ResidCnt);
 906
 907            if (residual) {
 908                size_t count = 1;
 909                size_t offset = pSRB->SGBusAddr - sg_dma_address(pSRB->pSegmentList);
 910                unsigned long flags;
 911                u8 *ptr;
 912
 913                bval = DC390_read8 (ScsiFifo);      /* get one residual byte */
 914
 915                local_irq_save(flags);
 916                ptr = scsi_kmap_atomic_sg(pSRB->pSegmentList, pSRB->SGcount, &offset, &count);
 917                if (likely(ptr)) {
 918                        *(ptr + offset) = bval;
 919                        scsi_kunmap_atomic_sg(ptr);
 920                }
 921                local_irq_restore(flags);
 922                WARN_ON(!ptr);
 923
 924                /* 1 more byte read */
 925                xferCnt += dc390_advance_segment(pSRB, pSRB->SGToBeXferLen - 1);
 926            }
 927            DEBUG1(printk (KERN_DEBUG "Xfered: %lu, Total: %lu, Remaining: %lu\n", xferCnt,\
 928                           pSRB->TotalXferredLen, pSRB->SGToBeXferLen));
 929        }
 930    }
 931    if ((*psstatus & 7) != SCSI_DATA_IN)
 932    {
 933            DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
 934            DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
 935    }
 936}
 937
 938static void
 939dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
 940{
 941}
 942
 943static void
 944dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
 945{
 946
 947    pSRB->TargetStatus = DC390_read8 (ScsiFifo);
 948    //udelay (1);
 949    pSRB->EndMessage = DC390_read8 (ScsiFifo);  /* get message */
 950
 951    *psstatus = SCSI_NOP0;
 952    pSRB->SRBState = SRB_COMPLETED;
 953    DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
 954}
 955
 956static void
 957dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
 958{
 959    if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) )
 960        *psstatus = SCSI_NOP0;
 961    //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
 962}
 963
 964
 965static void __inline__
 966dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB)
 967{
 968  DC390_write8 (Sync_Period, pDCB->SyncPeriod);
 969  DC390_write8 (Sync_Offset, pDCB->SyncOffset);
 970  DC390_write8 (CtrlReg3, pDCB->CtrlR3);
 971  DC390_write8 (CtrlReg4, pDCB->CtrlR4);
 972  dc390_SetXferRate (pACB, pDCB);
 973}
 974
 975
 976#ifdef DC390_DEBUG0
 977static void
 978dc390_printMsg (u8 *MsgBuf, u8 len)
 979{
 980  int i;
 981  printk (" %02x", MsgBuf[0]);
 982  for (i = 1; i < len; i++)
 983    printk (" %02x", MsgBuf[i]);
 984  printk ("\n");
 985}
 986#endif
 987
 988#define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
 989
 990/* reject_msg */
 991static void __inline__
 992dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB)
 993{
 994  pSRB->MsgOutBuf[0] = MESSAGE_REJECT;
 995  pSRB->MsgCnt = 1;
 996  DC390_ENABLE_MSGOUT;
 997  DEBUG0 (printk (KERN_INFO "DC390: Reject message\n"));
 998}
 999
1000/* abort command */
1001static void
1002dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB )
1003{
1004    pSRB->MsgOutBuf[0] = ABORT; 
1005    pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1006    pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_;
1007}
1008
1009static struct dc390_srb*
1010dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag)
1011{
1012  struct dc390_srb* pSRB = pDCB->pGoingSRB;
1013
1014  if (pSRB)
1015    {
1016        struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag);
1017        pSRB = (struct dc390_srb *)scmd->host_scribble;
1018
1019        if (pDCB->DCBFlag & ABORT_DEV_)
1020        {
1021          pSRB->SRBState = SRB_ABORT_SENT;
1022          dc390_EnableMsgOut_Abort( pACB, pSRB );
1023        }
1024
1025        if (!(pSRB->SRBState & SRB_DISCONNECT))
1026                goto mingx0;
1027
1028        pDCB->pActiveSRB = pSRB;
1029        pSRB->SRBState = SRB_DATA_XFER;
1030    }
1031  else
1032    {
1033    mingx0:
1034      pSRB = pACB->pTmpSRB;
1035      pSRB->SRBState = SRB_UNEXPECT_RESEL;
1036      pDCB->pActiveSRB = pSRB;
1037      pSRB->MsgOutBuf[0] = ABORT_TAG;
1038      pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1039    }
1040  return pSRB;
1041}
1042
1043
1044/* set async transfer mode */
1045static void 
1046dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1047{
1048  struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1049  if (!(pSRB->SRBState & DO_SYNC_NEGO)) 
1050    printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID);
1051  pSRB->SRBState &= ~DO_SYNC_NEGO;
1052  pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE);
1053  pDCB->SyncPeriod = 0;
1054  pDCB->SyncOffset = 0;
1055  //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1056  pDCB->CtrlR3 = FAST_CLK;      /* fast clock / normal scsi */
1057  pDCB->CtrlR4 &= 0x3f;
1058  pDCB->CtrlR4 |= pACB->glitch_cfg;     /* glitch eater */
1059  dc390_reprog (pACB, pDCB);
1060}
1061
1062/* set sync transfer mode */
1063static void
1064dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1065{
1066  u8 bval;
1067  u16 wval, wval1;
1068  struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1069  u8 oldsyncperiod = pDCB->SyncPeriod;
1070  u8 oldsyncoffset = pDCB->SyncOffset;
1071  
1072  if (!(pSRB->SRBState & DO_SYNC_NEGO))
1073    {
1074      printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n", 
1075              pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]);
1076
1077      /* reject */
1078      //dc390_MsgIn_reject (pACB, pSRB);
1079      //return dc390_MsgIn_set_async (pACB, pSRB);
1080
1081      /* Reply with corrected SDTR Message */
1082      if (pSRB->MsgInBuf[4] > 15)
1083        { 
1084          printk (KERN_INFO "DC390: Lower Sync Offset to 15\n");
1085          pSRB->MsgInBuf[4] = 15;
1086        }
1087      if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod)
1088        {
1089          printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2);
1090          pSRB->MsgInBuf[3] = pDCB->NegoPeriod;
1091        }
1092      memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5);
1093      pSRB->MsgCnt = 5;
1094      DC390_ENABLE_MSGOUT;
1095    }
1096
1097  pSRB->SRBState &= ~DO_SYNC_NEGO;
1098  pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE;
1099  pDCB->SyncOffset &= 0x0f0;
1100  pDCB->SyncOffset |= pSRB->MsgInBuf[4];
1101  pDCB->NegoPeriod = pSRB->MsgInBuf[3];
1102
1103  wval = (u16) pSRB->MsgInBuf[3];
1104  wval = wval << 2; wval -= 3; wval1 = wval / 25;       /* compute speed */
1105  if( (wval1 * 25) != wval) wval1++;
1106  bval = FAST_CLK+FAST_SCSI;    /* fast clock / fast scsi */
1107
1108  pDCB->CtrlR4 &= 0x3f;         /* Glitch eater: 12ns less than normal */
1109  if (pACB->glitch_cfg != NS_TO_GLITCH(0))
1110    pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1));
1111  else
1112    pDCB->CtrlR4 |= NS_TO_GLITCH(0);
1113  if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */
1114
1115  if (wval1 >= 8)
1116    {
1117      wval1--;  /* Timing computation differs by 1 from FAST_SCSI */
1118      bval = FAST_CLK;          /* fast clock / normal scsi */
1119      pDCB->CtrlR4 |= pACB->glitch_cfg;         /* glitch eater */
1120    }
1121
1122  pDCB->CtrlR3 = bval;
1123  pDCB->SyncPeriod = (u8)wval1;
1124  
1125  if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0)
1126    {
1127      if (! (bval & FAST_SCSI)) wval1++;
1128      printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID, 
1129              40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f);
1130    }
1131  
1132  dc390_reprog (pACB, pDCB);
1133}
1134
1135
1136/* handle RESTORE_PTR */
1137/* This doesn't look very healthy... to-be-fixed */
1138static void 
1139dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1140{
1141    struct scsi_cmnd *pcmd = pSRB->pcmd;
1142    struct scatterlist *psgl;
1143    pSRB->TotalXferredLen = 0;
1144    pSRB->SGIndex = 0;
1145    if (scsi_sg_count(pcmd)) {
1146        size_t saved;
1147        pSRB->pSegmentList = scsi_sglist(pcmd);
1148        psgl = pSRB->pSegmentList;
1149        //dc390_pci_sync(pSRB);
1150
1151        while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr)
1152        {
1153            pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl);
1154            pSRB->SGIndex++;
1155            if( pSRB->SGIndex < pSRB->SGcount )
1156            {
1157                pSRB->pSegmentList++;
1158
1159                dc390_start_segment(pSRB);
1160            }
1161            else
1162                pSRB->SGToBeXferLen = 0;
1163        }
1164
1165        saved = pSRB->Saved_Ptr - pSRB->TotalXferredLen;
1166        pSRB->SGToBeXferLen -= saved;
1167        pSRB->SGBusAddr += saved;
1168        printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n",
1169                pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr);
1170
1171    } else {
1172         pSRB->SGcount = 0;
1173         printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n");
1174    }
1175
1176  pSRB->TotalXferredLen = pSRB->Saved_Ptr;
1177}
1178
1179
1180/* According to the docs, the AM53C974 reads the message and 
1181 * generates a Successful Operation IRQ before asserting ACK for
1182 * the last byte (how does it know whether it's the last ?) */
1183/* The old code handled it in another way, indicating, that on
1184 * every message byte an IRQ is generated and every byte has to
1185 * be manually ACKed. Hmmm ?  (KG, 98/11/28) */
1186/* The old implementation was correct. Sigh! */
1187
1188/* Check if the message is complete */
1189static u8 __inline__
1190dc390_MsgIn_complete (u8 *msgbuf, u32 len)
1191{ 
1192  if (*msgbuf == EXTENDED_MESSAGE)
1193  {
1194        if (len < 2) return 0;
1195        if (len < msgbuf[1] + 2) return 0;
1196  }
1197  else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages
1198        if (len < 2) return 0;
1199  return 1;
1200}
1201
1202
1203
1204/* read and eval received messages */
1205static void
1206dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1207{
1208    struct dc390_dcb*   pDCB = pACB->pActiveDCB;
1209
1210    /* Read the msg */
1211
1212    pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo);
1213    //pSRB->SRBState = 0;
1214
1215    /* Msg complete ? */
1216    if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen))
1217      {
1218        DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen));
1219        /* Now eval the msg */
1220        switch (pSRB->MsgInBuf[0]) 
1221          {
1222          case DISCONNECT: 
1223            pSRB->SRBState = SRB_DISCONNECT; break;
1224            
1225          case SIMPLE_QUEUE_TAG:
1226          case HEAD_OF_QUEUE_TAG:
1227          case ORDERED_QUEUE_TAG:
1228            pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]);
1229            break;
1230            
1231          case MESSAGE_REJECT: 
1232            DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1233            pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1234            if( pSRB->SRBState & DO_SYNC_NEGO)
1235              dc390_MsgIn_set_async (pACB, pSRB);
1236            break;
1237            
1238          case EXTENDED_MESSAGE:
1239            /* reject every extended msg but SDTR */
1240            if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR)
1241              dc390_MsgIn_reject (pACB, pSRB);
1242            else
1243              {
1244                if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0)
1245                  dc390_MsgIn_set_async (pACB, pSRB);
1246                else
1247                  dc390_MsgIn_set_sync (pACB, pSRB);
1248              }
1249            
1250            // nothing has to be done
1251          case COMMAND_COMPLETE: break;
1252            
1253            // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the
1254            // scsi command. Thanks, Gerard, for pointing it out.
1255          case SAVE_POINTERS: 
1256            pSRB->Saved_Ptr = pSRB->TotalXferredLen;
1257            break;
1258            // The device might want to restart transfer with a RESTORE
1259          case RESTORE_POINTERS:
1260            DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n"));
1261            dc390_restore_ptr (pACB, pSRB);
1262            break;
1263
1264            // reject unknown messages
1265          default: dc390_MsgIn_reject (pACB, pSRB);
1266          }
1267        
1268        /* Clear counter and MsgIn state */
1269        pSRB->SRBState &= ~SRB_MSGIN;
1270        pACB->MsgLen = 0;
1271      }
1272
1273    *psstatus = SCSI_NOP0;
1274    DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1275    //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1276}
1277
1278
1279static void
1280dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir)
1281{
1282    unsigned long  lval;
1283    struct dc390_dcb*   pDCB = pACB->pActiveDCB;
1284
1285    if (pSRB == pACB->pTmpSRB)
1286    {
1287        if (pDCB)
1288                printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN);
1289        else
1290                printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n");
1291
1292        /* Try to recover - some broken disks react badly to tagged INQUIRY */
1293        if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) {
1294                pSRB = pDCB->pGoingSRB;
1295                pDCB->pActiveSRB = pSRB;
1296        } else {
1297                pSRB->pSRBDCB = pDCB;
1298                dc390_EnableMsgOut_Abort(pACB, pSRB);
1299                if (pDCB)
1300                        pDCB->DCBFlag |= ABORT_DEV;
1301                return;
1302        }
1303    }
1304
1305    if( pSRB->SGIndex < pSRB->SGcount )
1306    {
1307        DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1308        if( !pSRB->SGToBeXferLen )
1309        {
1310            dc390_start_segment(pSRB);
1311
1312            DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment."));
1313        }
1314        lval = pSRB->SGToBeXferLen;
1315        DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr));
1316        DC390_write8 (CtcReg_Low, (u8) lval);
1317        lval >>= 8;
1318        DC390_write8 (CtcReg_Mid, (u8) lval);
1319        lval >>= 8;
1320        DC390_write8 (CtcReg_High, (u8) lval);
1321
1322        DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen);
1323        DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr);
1324
1325        //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1326        pSRB->SRBState = SRB_DATA_XFER;
1327
1328        DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
1329
1330        DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
1331        //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT));
1332        //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status)));
1333        //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT));
1334    }
1335    else    /* xfer pad */
1336    {
1337        if( pSRB->SGcount )
1338        {
1339            pSRB->AdaptStatus = H_OVER_UNDER_RUN;
1340            pSRB->SRBStatus |= OVER_RUN;
1341            DEBUG0(printk (KERN_WARNING " DC390: Overrun -"));
1342        }
1343        DEBUG0(printk (KERN_WARNING " Clear transfer pad \n"));
1344        DC390_write8 (CtcReg_Low, 0);
1345        DC390_write8 (CtcReg_Mid, 0);
1346        DC390_write8 (CtcReg_High, 0);
1347
1348        pSRB->SRBState |= SRB_XFERPAD;
1349        DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE);
1350/*
1351        DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1352        DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
1353*/
1354    }
1355}
1356
1357
1358static void
1359dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1360{
1361    dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION);
1362}
1363
1364static void
1365dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1366{
1367    dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION);
1368}
1369
1370static void
1371dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1372{
1373    struct dc390_dcb*   pDCB;
1374    u8  i, cnt;
1375    u8     *ptr;
1376
1377    DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1378    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1379    if( !(pSRB->SRBFlag & AUTO_REQSENSE) )
1380    {
1381        cnt = (u8) pSRB->pcmd->cmd_len;
1382        ptr = (u8 *) pSRB->pcmd->cmnd;
1383        for(i=0; i < cnt; i++)
1384            DC390_write8 (ScsiFifo, *(ptr++));
1385    }
1386    else
1387    {
1388        DC390_write8 (ScsiFifo, REQUEST_SENSE);
1389        pDCB = pACB->pActiveDCB;
1390        DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
1391        DC390_write8 (ScsiFifo, 0);
1392        DC390_write8 (ScsiFifo, 0);
1393        DC390_write8 (ScsiFifo, SCSI_SENSE_BUFFERSIZE);
1394        DC390_write8 (ScsiFifo, 0);
1395        DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n"));
1396    }
1397    pSRB->SRBState = SRB_COMMAND;
1398    DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1399}
1400
1401static void
1402dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1403{
1404    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1405    pSRB->SRBState = SRB_STATUS;
1406    DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE);
1407    //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1408}
1409
1410static void
1411dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1412{
1413    u8   bval, i, cnt;
1414    u8     *ptr;
1415    struct dc390_dcb*    pDCB;
1416
1417    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1418    pDCB = pACB->pActiveDCB;
1419    if( !(pSRB->SRBState & SRB_MSGOUT) )
1420    {
1421        cnt = pSRB->MsgCnt;
1422        if( cnt )
1423        {
1424            ptr = (u8 *) pSRB->MsgOutBuf;
1425            for(i=0; i < cnt; i++)
1426                DC390_write8 (ScsiFifo, *(ptr++));
1427            pSRB->MsgCnt = 0;
1428            if( (pDCB->DCBFlag & ABORT_DEV_) &&
1429                (pSRB->MsgOutBuf[0] == ABORT) )
1430                pSRB->SRBState = SRB_ABORT_SENT;
1431        }
1432        else
1433        {
1434            bval = ABORT;       /* ??? MSG_NOP */
1435            if( (pSRB->pcmd->cmnd[0] == INQUIRY ) ||
1436                (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) ||
1437                (pSRB->SRBFlag & AUTO_REQSENSE) )
1438            {
1439                if( pDCB->SyncMode & SYNC_ENABLE )
1440                    goto  mop1;
1441            }
1442            DC390_write8 (ScsiFifo, bval);
1443        }
1444        DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1445    }
1446    else
1447    {
1448mop1:
1449        printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);
1450        DC390_write8 (ScsiFifo, EXTENDED_MESSAGE);
1451        DC390_write8 (ScsiFifo, 3);     /*    ;length of extended msg */
1452        DC390_write8 (ScsiFifo, EXTENDED_SDTR); /*    ; sync nego */
1453        DC390_write8 (ScsiFifo, pDCB->NegoPeriod);
1454        if (pDCB->SyncOffset & 0x0f)
1455                    DC390_write8 (ScsiFifo, pDCB->SyncOffset);
1456        else
1457                    DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET);              
1458        pSRB->SRBState |= DO_SYNC_NEGO;
1459        DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1460    }
1461}
1462
1463static void
1464dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1465{
1466    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1467    if( !(pSRB->SRBState & SRB_MSGIN) )
1468    {
1469        pSRB->SRBState &= ~SRB_DISCONNECT;
1470        pSRB->SRBState |= SRB_MSGIN;
1471    }
1472    DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1473    //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1474}
1475
1476static void
1477dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1478{
1479}
1480
1481static void
1482dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1483{
1484}
1485
1486
1487static void
1488dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB )
1489{
1490    u8  bval, i, cnt;
1491    struct dc390_dcb*   ptr;
1492
1493    if( !(pDCB->TargetLUN) )
1494    {
1495        if( !pACB->scan_devices )
1496        {
1497            ptr = pACB->pLinkDCB;
1498            cnt = pACB->DCBCnt;
1499            bval = pDCB->TargetID;
1500            for(i=0; i<cnt; i++)
1501            {
1502                if( ptr->TargetID == bval )
1503                {
1504                    ptr->SyncPeriod = pDCB->SyncPeriod;
1505                    ptr->SyncOffset = pDCB->SyncOffset;
1506                    ptr->CtrlR3 = pDCB->CtrlR3;
1507                    ptr->CtrlR4 = pDCB->CtrlR4;
1508                    ptr->SyncMode = pDCB->SyncMode;
1509                }
1510                ptr = ptr->pNextDCB;
1511            }
1512        }
1513    }
1514    return;
1515}
1516
1517
1518static void
1519dc390_Disconnect( struct dc390_acb* pACB )
1520{
1521    struct dc390_dcb *pDCB;
1522    struct dc390_srb *pSRB, *psrb;
1523    u8  i, cnt;
1524
1525    DEBUG0(printk(KERN_INFO "DISC,"));
1526
1527    if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n");
1528    pACB->Connected = 0;
1529    pDCB = pACB->pActiveDCB;
1530    if (!pDCB)
1531     {
1532        DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\
1533               pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel));
1534        mdelay(400);
1535        DC390_read8 (INT_Status);       /* Reset Pending INT */
1536        DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1537        return;
1538     }
1539    DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1540    pSRB = pDCB->pActiveSRB;
1541    pACB->pActiveDCB = NULL;
1542    pSRB->ScsiPhase = SCSI_NOP0;
1543    if( pSRB->SRBState & SRB_UNEXPECT_RESEL )
1544        pSRB->SRBState = 0;
1545    else if( pSRB->SRBState & SRB_ABORT_SENT )
1546    {
1547        pDCB->TagMask = 0;
1548        pDCB->DCBFlag = 0;
1549        cnt = pDCB->GoingSRBCnt;
1550        pDCB->GoingSRBCnt = 0;
1551        pSRB = pDCB->pGoingSRB;
1552        for( i=0; i < cnt; i++)
1553        {
1554            psrb = pSRB->pNextSRB;
1555            dc390_Free_insert (pACB, pSRB);
1556            pSRB = psrb;
1557        }
1558        pDCB->pGoingSRB = NULL;
1559    }
1560    else
1561    {
1562        if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) ||
1563           !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) )
1564        {       /* Selection time out */
1565                pSRB->AdaptStatus = H_SEL_TIMEOUT;
1566                pSRB->TargetStatus = 0;
1567                goto  disc1;
1568        }
1569        else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED))
1570        {
1571disc1:
1572            dc390_freetag (pDCB, pSRB);
1573            pDCB->pActiveSRB = NULL;
1574            pSRB->SRBState = SRB_FREE;
1575            dc390_SRBdone( pACB, pDCB, pSRB);
1576        }
1577    }
1578    pACB->MsgLen = 0;
1579}
1580
1581
1582static void
1583dc390_Reselect( struct dc390_acb* pACB )
1584{
1585    struct dc390_dcb*   pDCB;
1586    struct dc390_srb*   pSRB;
1587    u8  id, lun;
1588
1589    DEBUG0(printk(KERN_INFO "RSEL,"));
1590    pACB->Connected = 1;
1591    pDCB = pACB->pActiveDCB;
1592    if( pDCB )
1593    {   /* Arbitration lost but Reselection won */
1594        DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n"));
1595        pSRB = pDCB->pActiveSRB;
1596        if( !( pACB->scan_devices ) )
1597        {
1598            struct scsi_cmnd *pcmd = pSRB->pcmd;
1599            scsi_set_resid(pcmd, scsi_bufflen(pcmd));
1600            SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1601            dc390_Going_remove(pDCB, pSRB);
1602            dc390_Free_insert(pACB, pSRB);
1603            pcmd->scsi_done (pcmd);
1604            DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB));
1605        }
1606    }
1607    /* Get ID */
1608    lun = DC390_read8 (ScsiFifo);
1609    DEBUG0(printk ("Dev %02x,", lun));
1610    if (!(lun & (1 << pACB->pScsiHost->this_id)))
1611      printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun);
1612    else
1613      lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */
1614    id = 0; while (lun >>= 1) id++;
1615    /* Get LUN */
1616    lun = DC390_read8 (ScsiFifo);
1617    if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n");
1618    lun &= 7;
1619    DEBUG0(printk ("(%02i-%i),", id, lun));
1620    pDCB = dc390_findDCB (pACB, id, lun);
1621    if (!pDCB)
1622    {
1623        printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n",
1624                    id, lun);
1625        return;
1626    }
1627    pACB->pActiveDCB = pDCB;
1628    /* TagQ: We expect a message soon, so never mind the exact SRB */
1629    if( pDCB->SyncMode & EN_TAG_QUEUEING )
1630    {
1631        pSRB = pACB->pTmpSRB;
1632        pDCB->pActiveSRB = pSRB;
1633    }
1634    else
1635    {
1636        pSRB = pDCB->pActiveSRB;
1637        if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) )
1638        {
1639            pSRB= pACB->pTmpSRB;
1640            pSRB->SRBState = SRB_UNEXPECT_RESEL;
1641            printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n",
1642                    id, lun);
1643            pDCB->pActiveSRB = pSRB;
1644            dc390_EnableMsgOut_Abort ( pACB, pSRB );
1645        }
1646        else
1647        {
1648            if( pDCB->DCBFlag & ABORT_DEV_ )
1649            {
1650                pSRB->SRBState = SRB_ABORT_SENT;
1651                printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n",
1652                        id, lun);
1653                dc390_EnableMsgOut_Abort( pACB, pSRB );
1654            }
1655            else
1656                pSRB->SRBState = SRB_DATA_XFER;
1657        }
1658    }
1659
1660    DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber));
1661    pSRB->ScsiPhase = SCSI_NOP0;
1662    DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
1663    DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1664    DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1665    DC390_write8 (CtrlReg1, pDCB->CtrlR1);
1666    DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1667    DC390_write8 (CtrlReg4, pDCB->CtrlR4);      /* ; Glitch eater */
1668    DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);   /* ;to release the /ACK signal */
1669}
1670
1671static int __inline__
1672dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1673{
1674        struct scsi_cmnd *pcmd;
1675
1676        pcmd = pSRB->pcmd;
1677
1678        REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\
1679                              pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN));
1680
1681        pSRB->SRBFlag |= AUTO_REQSENSE;
1682        pSRB->SavedTotXLen = pSRB->TotalXferredLen;
1683        pSRB->AdaptStatus = 0;
1684        pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */
1685
1686        /* We are called from SRBdone, original PCI mapping has been removed
1687         * already, new one is set up from StartSCSI */
1688        pSRB->SGIndex = 0;
1689
1690        pSRB->TotalXferredLen = 0;
1691        pSRB->SGToBeXferLen = 0;
1692        return dc390_StartSCSI(pACB, pDCB, pSRB);
1693}
1694
1695
1696static void
1697dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
1698{
1699    u8 status;
1700    struct scsi_cmnd *pcmd;
1701
1702    pcmd = pSRB->pcmd;
1703    /* KG: Moved pci_unmap here */
1704    dc390_pci_unmap(pSRB);
1705
1706    status = pSRB->TargetStatus;
1707
1708    DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p\n", status, pcmd->result, pSRB));
1709    if(pSRB->SRBFlag & AUTO_REQSENSE)
1710    {   /* Last command was a Request Sense */
1711        pSRB->SRBFlag &= ~AUTO_REQSENSE;
1712        pSRB->AdaptStatus = 0;
1713        pSRB->TargetStatus = SAM_STAT_CHECK_CONDITION;
1714
1715        //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
1716        if (status == SAM_STAT_CHECK_CONDITION)
1717            pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0);
1718        else /* Retry */
1719        {
1720            if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */)
1721            {
1722                /* Don't retry on TEST_UNIT_READY */
1723                pcmd->result = MK_RES_LNX(DRIVER_SENSE, DID_OK, 0, SAM_STAT_CHECK_CONDITION);
1724                REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\
1725                       (u32) pcmd->result, (u32) pSRB->TotalXferredLen));
1726            } else {
1727                SET_RES_DRV(pcmd->result, DRIVER_SENSE);
1728                //pSRB->ScsiCmdLen       = (u8) (pSRB->Segment1[0] >> 8);
1729                DEBUG0 (printk ("DC390: RETRY (%02x), target %02i-%02i\n", pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1730                pSRB->TotalXferredLen = 0;
1731                SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1732            }
1733        }
1734        goto cmd_done;
1735    }
1736    if( status )
1737    {
1738        if (status == SAM_STAT_CHECK_CONDITION)
1739        {
1740            if (dc390_RequestSense(pACB, pDCB, pSRB)) {
1741                SET_RES_DID(pcmd->result, DID_ERROR);
1742                goto cmd_done;
1743            }
1744            return;
1745        }
1746        else if (status == SAM_STAT_TASK_SET_FULL)
1747        {
1748            scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1);
1749            DEBUG0 (printk ("DC390: RETRY (%02x), target %02i-%02i\n", pcmd->cmnd[0], pcmd->device->id, pcmd->device->lun));
1750            pSRB->TotalXferredLen = 0;
1751            SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1752        }
1753        else if (status == SAM_STAT_BUSY &&
1754                 (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) &&
1755                 pACB->scan_devices)
1756        {
1757            pSRB->AdaptStatus = 0;
1758            pSRB->TargetStatus = status;
1759            pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0);
1760        }
1761        else
1762        {   /* Another error */
1763            pSRB->TotalXferredLen = 0;
1764            SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1765            goto cmd_done;
1766        }
1767    }
1768    else
1769    {   /*  Target status == 0 */
1770        status = pSRB->AdaptStatus;
1771        if (status == H_OVER_UNDER_RUN)
1772        {
1773            pSRB->TargetStatus = 0;
1774            SET_RES_DID(pcmd->result,DID_OK);
1775            SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1776        }
1777        else if (status == H_SEL_TIMEOUT)
1778        {
1779            pcmd->result = MK_RES(0, DID_NO_CONNECT, 0, 0);
1780            /* Devices are removed below ... */
1781        }
1782        else if( pSRB->SRBStatus & PARITY_ERROR)
1783        {
1784            //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0);
1785            SET_RES_DID(pcmd->result,DID_PARITY);
1786            SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1787        }
1788        else                   /* No error */
1789        {
1790            pSRB->AdaptStatus = 0;
1791            pSRB->TargetStatus = 0;
1792            SET_RES_DID(pcmd->result,DID_OK);
1793        }
1794    }
1795
1796cmd_done:
1797    scsi_set_resid(pcmd, scsi_bufflen(pcmd) - pSRB->TotalXferredLen);
1798
1799    dc390_Going_remove (pDCB, pSRB);
1800    /* Add to free list */
1801    dc390_Free_insert (pACB, pSRB);
1802
1803    DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done\n"));
1804    pcmd->scsi_done (pcmd);
1805
1806    return;
1807}
1808
1809
1810/* Remove all SRBs from Going list and inform midlevel */
1811static void
1812dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd)
1813{
1814    struct dc390_dcb *pDCB, *pdcb;
1815    struct dc390_srb *psrb, *psrb2;
1816    int i;
1817    struct scsi_cmnd *pcmd;
1818
1819    pDCB = pACB->pLinkDCB;
1820    pdcb = pDCB;
1821    if (! pdcb) return;
1822    do
1823    {
1824        psrb = pdcb->pGoingSRB;
1825        for (i = 0; i < pdcb->GoingSRBCnt; i++)
1826        {
1827            psrb2 = psrb->pNextSRB;
1828            pcmd = psrb->pcmd;
1829            dc390_Free_insert (pACB, psrb);
1830            psrb  = psrb2;
1831        }
1832        pdcb->GoingSRBCnt = 0;
1833        pdcb->pGoingSRB = NULL;
1834        pdcb->TagMask = 0;
1835        pdcb = pdcb->pNextDCB;
1836    } while( pdcb != pDCB );
1837}
1838
1839
1840static void
1841dc390_ResetSCSIBus( struct dc390_acb* pACB )
1842{
1843    //DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1844    //udelay (250);
1845    //DC390_write8 (ScsiCmd, NOP_CMD);
1846
1847    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1848    DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1849    DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD);
1850    pACB->Connected = 0;
1851
1852    return;
1853}
1854
1855static void
1856dc390_ScsiRstDetect( struct dc390_acb* pACB )
1857{
1858    printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus);
1859    //DEBUG0(printk(KERN_INFO "RST_DETECT,"));
1860
1861    DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1862    /* Unlock before ? */
1863    /* delay half a second */
1864    udelay (1000);
1865    DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1866    pACB->pScsiHost->last_reset = jiffies + 5*HZ/2
1867                    + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1868    pACB->Connected = 0;
1869
1870    if( pACB->ACBFlag & RESET_DEV )
1871        pACB->ACBFlag |= RESET_DONE;
1872    else
1873    {   /* Reset was issued by sb else */
1874        pACB->ACBFlag |= RESET_DETECT;
1875
1876        dc390_ResetDevParam( pACB );
1877        dc390_DoingSRB_Done( pACB, NULL);
1878        //dc390_RecoverSRB( pACB );
1879        pACB->pActiveDCB = NULL;
1880        pACB->ACBFlag = 0;
1881    }
1882    return;
1883}
1884
1885static int DC390_queuecommand_lck(struct scsi_cmnd *cmd,
1886                void (*done)(struct scsi_cmnd *))
1887{
1888        struct scsi_device *sdev = cmd->device;
1889        struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
1890        struct dc390_dcb *dcb = sdev->hostdata;
1891        struct dc390_srb *srb;
1892
1893        if (sdev->queue_depth <= dcb->GoingSRBCnt)
1894                goto device_busy;
1895        if (acb->pActiveDCB)
1896                goto host_busy;
1897        if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV))
1898                goto host_busy;
1899
1900        srb = acb->pFreeSRB;
1901        if (unlikely(srb == NULL))
1902                goto host_busy;
1903
1904        cmd->scsi_done = done;
1905        cmd->result = 0;
1906        acb->Cmds++;
1907
1908        acb->pFreeSRB = srb->pNextSRB;
1909        srb->pNextSRB = NULL;
1910
1911        srb->pSRBDCB = dcb;
1912        srb->pcmd = cmd;
1913        cmd->host_scribble = (char *)srb;
1914    
1915        srb->SGIndex = 0;
1916        srb->AdaptStatus = 0;
1917        srb->TargetStatus = 0;
1918        srb->MsgCnt = 0;
1919
1920        srb->SRBStatus = 0;
1921        srb->SRBFlag = 0;
1922        srb->SRBState = 0;
1923        srb->TotalXferredLen = 0;
1924        srb->SGBusAddr = 0;
1925        srb->SGToBeXferLen = 0;
1926        srb->ScsiPhase = 0;
1927        srb->EndMessage = 0;
1928        srb->TagNumber = SCSI_NO_TAG;
1929
1930        if (dc390_StartSCSI(acb, dcb, srb)) {
1931                dc390_Free_insert(acb, srb);
1932                goto host_busy;
1933        }
1934
1935        dc390_Going_append(dcb, srb);
1936
1937        return 0;
1938
1939 host_busy:
1940        return SCSI_MLQUEUE_HOST_BUSY;
1941
1942 device_busy:
1943        return SCSI_MLQUEUE_DEVICE_BUSY;
1944}
1945
1946static DEF_SCSI_QCMD(DC390_queuecommand)
1947
1948static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1949{
1950    struct pci_dev *pdev;
1951    u16 pstat;
1952
1953    if (!pDCB) pDCB = pACB->pActiveDCB;
1954    if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB;
1955
1956    if (pSRB) 
1957    {
1958        printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
1959                pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState,
1960                pSRB->ScsiPhase);
1961        printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus);
1962    }
1963    printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus);
1964    printk ("DC390: Register dump: SCSI block:\n");
1965    printk ("DC390: XferCnt  Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
1966    printk ("DC390:  %06x   %02x   %02x   %02x",
1967            DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16),
1968            DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State));
1969    printk ("   %02x   %02x   %02x   %02x   %02x   %02x\n",
1970            DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1),
1971            DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4));
1972    DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
1973    if (DC390_read8(Current_Fifo) & 0x1f)
1974      {
1975        printk ("DC390: FIFO:");
1976        while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo));
1977        printk ("\n");
1978      }
1979    printk ("DC390: Register dump: DMA engine:\n");
1980    printk ("DC390: Cmd   STrCnt    SBusA    WrkBC    WrkAC Stat SBusCtrl\n");
1981    printk ("DC390:  %02x %08x %08x %08x %08x   %02x %08x\n",
1982            DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr),
1983            DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr),
1984            DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl));
1985    DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
1986
1987    pdev = pACB->pdev;
1988    pci_read_config_word(pdev, PCI_STATUS, &pstat);
1989    printk ("DC390: Register dump: PCI Status: %04x\n", pstat);
1990    printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
1991}
1992
1993
1994static int DC390_abort(struct scsi_cmnd *cmd)
1995{
1996        struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata;
1997        struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata;
1998
1999        scmd_printk(KERN_WARNING, cmd, "DC390: Abort command\n");
2000
2001        /* abort() is too stupid for already sent commands at the moment. 
2002         * If it's called we are in trouble anyway, so let's dump some info 
2003         * into the syslog at least. (KG, 98/08/20,99/06/20) */
2004        dc390_dumpinfo(pACB, pDCB, NULL);
2005
2006        pDCB->DCBFlag |= ABORT_DEV_;
2007        printk(KERN_INFO "DC390: Aborted.\n");
2008
2009        return FAILED;
2010}
2011
2012
2013static void dc390_ResetDevParam( struct dc390_acb* pACB )
2014{
2015    struct dc390_dcb *pDCB, *pdcb;
2016
2017    pDCB = pACB->pLinkDCB;
2018    if (! pDCB) return;
2019    pdcb = pDCB;
2020    do
2021    {
2022        pDCB->SyncMode &= ~SYNC_NEGO_DONE;
2023        pDCB->SyncPeriod = 0;
2024        pDCB->SyncOffset = 0;
2025        pDCB->TagMask = 0;
2026        pDCB->CtrlR3 = FAST_CLK;
2027        pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK;
2028        pDCB->CtrlR4 |= pACB->glitch_cfg;
2029        pDCB = pDCB->pNextDCB;
2030    }
2031    while( pdcb != pDCB );
2032    pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT);
2033
2034}
2035
2036static int DC390_bus_reset (struct scsi_cmnd *cmd)
2037{
2038        struct dc390_acb*    pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2039        u8   bval;
2040
2041        spin_lock_irq(cmd->device->host->host_lock);
2042
2043        bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2044        DC390_write8(CtrlReg1, bval);   /* disable IRQ on bus reset */
2045
2046        pACB->ACBFlag |= RESET_DEV;
2047        dc390_ResetSCSIBus(pACB);
2048
2049        dc390_ResetDevParam(pACB);
2050        mdelay(1);
2051        pACB->pScsiHost->last_reset = jiffies + 3*HZ/2 
2052                + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2053    
2054        DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2055        DC390_read8(INT_Status);                /* Reset Pending INT */
2056
2057        dc390_DoingSRB_Done(pACB, cmd);
2058
2059        pACB->pActiveDCB = NULL;
2060        pACB->ACBFlag = 0;
2061
2062        bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
2063        DC390_write8(CtrlReg1, bval);   /* re-enable interrupt */
2064
2065        spin_unlock_irq(cmd->device->host->host_lock);
2066
2067        return SUCCESS;
2068}
2069
2070/**
2071 * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
2072 * scsi device that we need to deal with.
2073 *
2074 * @scsi_device: The new scsi device that we need to handle.
2075 */
2076static int dc390_slave_alloc(struct scsi_device *scsi_device)
2077{
2078        struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2079        struct dc390_dcb *pDCB, *pDCB2 = NULL;
2080        uint id = scsi_device->id;
2081        uint lun = scsi_device->lun;
2082
2083        pDCB = kzalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
2084        if (!pDCB)
2085                return -ENOMEM;
2086
2087        if (!pACB->DCBCnt++) {
2088                pACB->pLinkDCB = pDCB;
2089                pACB->pDCBRunRobin = pDCB;
2090        } else {
2091                pACB->pLastDCB->pNextDCB = pDCB;
2092        }
2093   
2094        pDCB->pNextDCB = pACB->pLinkDCB;
2095        pACB->pLastDCB = pDCB;
2096
2097        pDCB->pDCBACB = pACB;
2098        pDCB->TargetID = id;
2099        pDCB->TargetLUN = lun;
2100
2101        /*
2102         * Some values are for all LUNs: Copy them 
2103         * In a clean way: We would have an own structure for a SCSI-ID 
2104         */
2105        if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
2106                pDCB->DevMode = pDCB2->DevMode;
2107                pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE;
2108                pDCB->SyncPeriod = pDCB2->SyncPeriod;
2109                pDCB->SyncOffset = pDCB2->SyncOffset;
2110                pDCB->NegoPeriod = pDCB2->NegoPeriod;
2111      
2112                pDCB->CtrlR3 = pDCB2->CtrlR3;
2113                pDCB->CtrlR4 = pDCB2->CtrlR4;
2114        } else {
2115                u8 index = pACB->AdapterIndex;
2116                PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
2117
2118                pDCB->DevMode = prom->EE_MODE1;
2119                pDCB->NegoPeriod =
2120                        (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
2121                pDCB->CtrlR3 = FAST_CLK;
2122                pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
2123                if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
2124                        pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
2125        }
2126
2127        if (pDCB->DevMode & SYNC_NEGO_)
2128                pDCB->SyncMode |= SYNC_ENABLE;
2129        else {
2130                pDCB->SyncMode = 0;
2131                pDCB->SyncOffset &= ~0x0f;
2132        }
2133
2134        pDCB->CtrlR1 = pACB->pScsiHost->this_id;
2135        if (pDCB->DevMode & PARITY_CHK_)
2136                pDCB->CtrlR1 |= PARITY_ERR_REPO;
2137
2138        pACB->scan_devices = 1;
2139        scsi_device->hostdata = pDCB;
2140        return 0;
2141}
2142
2143/**
2144 * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
2145 * device that is going away.
2146 *
2147 * @scsi_device: The scsi device that we need to remove.
2148 */
2149static void dc390_slave_destroy(struct scsi_device *scsi_device)
2150{
2151        struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2152        struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata;
2153        struct dc390_dcb* pPrevDCB = pACB->pLinkDCB;
2154
2155        pACB->scan_devices = 0;
2156
2157        BUG_ON(pDCB->GoingSRBCnt > 1);
2158        
2159        if (pDCB == pACB->pLinkDCB) {
2160                if (pACB->pLastDCB == pDCB) {
2161                        pDCB->pNextDCB = NULL;
2162                        pACB->pLastDCB = NULL;
2163                }
2164                pACB->pLinkDCB = pDCB->pNextDCB;
2165        } else {
2166                while (pPrevDCB->pNextDCB != pDCB)
2167                        pPrevDCB = pPrevDCB->pNextDCB;
2168                pPrevDCB->pNextDCB = pDCB->pNextDCB;
2169                if (pDCB == pACB->pLastDCB)
2170                        pACB->pLastDCB = pPrevDCB;
2171        }
2172
2173        if (pDCB == pACB->pActiveDCB)
2174                pACB->pActiveDCB = NULL;
2175        if (pDCB == pACB->pLinkDCB)
2176                pACB->pLinkDCB = pDCB->pNextDCB;
2177        if (pDCB == pACB->pDCBRunRobin)
2178                pACB->pDCBRunRobin = pDCB->pNextDCB;
2179        kfree(pDCB); 
2180        
2181        pACB->DCBCnt--;
2182}
2183
2184static int dc390_slave_configure(struct scsi_device *sdev)
2185{
2186        struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
2187        struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata;
2188
2189        acb->scan_devices = 0;
2190        if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
2191                dcb->SyncMode |= EN_TAG_QUEUEING;
2192                scsi_activate_tcq(sdev, acb->TagMaxNum);
2193        }
2194
2195        return 0;
2196}
2197
2198static struct scsi_host_template driver_template = {
2199        .module                 = THIS_MODULE,
2200        .proc_name              = "tmscsim", 
2201        .name                   = DC390_BANNER " V" DC390_VERSION,
2202        .slave_alloc            = dc390_slave_alloc,
2203        .slave_configure        = dc390_slave_configure,
2204        .slave_destroy          = dc390_slave_destroy,
2205        .queuecommand           = DC390_queuecommand,
2206        .eh_abort_handler       = DC390_abort,
2207        .eh_bus_reset_handler   = DC390_bus_reset,
2208        .can_queue              = 1,
2209        .this_id                = 7,
2210        .sg_tablesize           = SG_ALL,
2211        .cmd_per_lun            = 1,
2212        .use_clustering         = ENABLE_CLUSTERING,
2213        .max_sectors            = 0x4000, /* 8MiB = 16 * 1024 * 512 */
2214};
2215
2216/***********************************************************************
2217 * Functions for access to DC390 EEPROM
2218 * and some to emulate it
2219 *
2220 **********************************************************************/
2221
2222static void __devinit dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd)
2223{
2224        u8 carryFlag = 1, j = 0x80, bval;
2225        int i;
2226
2227        for (i = 0; i < 9; i++) {
2228                if (carryFlag) {
2229                        pci_write_config_byte(pdev, 0x80, 0x40);
2230                        bval = 0xc0;
2231                } else
2232                        bval = 0x80;
2233
2234                udelay(160);
2235                pci_write_config_byte(pdev, 0x80, bval);
2236                udelay(160);
2237                pci_write_config_byte(pdev, 0x80, 0);
2238                udelay(160);
2239
2240                carryFlag = (cmd & j) ? 1 : 0;
2241                j >>= 1;
2242        }
2243}
2244
2245static u16 __devinit dc390_eeprom_get_data(struct pci_dev *pdev)
2246{
2247        int i;
2248        u16 wval = 0;
2249        u8 bval;
2250
2251        for (i = 0; i < 16; i++) {
2252                wval <<= 1;
2253
2254                pci_write_config_byte(pdev, 0x80, 0x80);
2255                udelay(160);
2256                pci_write_config_byte(pdev, 0x80, 0x40);
2257                udelay(160);
2258                pci_read_config_byte(pdev, 0x00, &bval);
2259
2260                if (bval == 0x22)
2261                        wval |= 1;
2262        }
2263
2264        return wval;
2265}
2266
2267static void __devinit dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr)
2268{
2269        u8 cmd = EEPROM_READ, i;
2270
2271        for (i = 0; i < 0x40; i++) {
2272                pci_write_config_byte(pdev, 0xc0, 0);
2273                udelay(160);
2274
2275                dc390_eeprom_prepare_read(pdev, cmd++);
2276                *ptr++ = dc390_eeprom_get_data(pdev);
2277
2278                pci_write_config_byte(pdev, 0x80, 0);
2279                pci_write_config_byte(pdev, 0x80, 0);
2280                udelay(160);
2281        }
2282}
2283
2284/* Override EEprom values with explicitly set values */
2285static void __devinit dc390_eeprom_override(u8 index)
2286{
2287        u8 *ptr = (u8 *) dc390_eepromBuf[index], id;
2288
2289        /* Adapter Settings */
2290        if (tmscsim[0] != -2)
2291                ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
2292        if (tmscsim[3] != -2)
2293                ptr[EE_MODE2] = (u8)tmscsim[3];
2294        if (tmscsim[5] != -2)
2295                ptr[EE_DELAY] = tmscsim[5];             /* Reset delay */
2296        if (tmscsim[4] != -2)
2297                ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4];   /* Tagged Cmds */
2298
2299        /* Device Settings */
2300        for (id = 0; id < MAX_SCSI_ID; id++) {
2301                if (tmscsim[2] != -2)
2302                        ptr[id << 2] = (u8)tmscsim[2];          /* EE_MODE1 */
2303                if (tmscsim[1] != -2)
2304                        ptr[(id << 2) + 1] = (u8)tmscsim[1];    /* EE_Speed */
2305        }
2306}
2307
2308static int __devinitdata tmscsim_def[] = {
2309        7,
2310        0 /* 10MHz */,
2311        PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_,
2312        MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK,
2313        3 /* 16 Tags per LUN */,
2314        1 /* s delay after Reset */,
2315};
2316
2317/* Copy defaults over set values where missing */
2318static void __devinit dc390_fill_with_defaults (void)
2319{
2320        int i;
2321
2322        for (i = 0; i < 6; i++) {
2323                if (tmscsim[i] < 0 || tmscsim[i] > 255)
2324                        tmscsim[i] = tmscsim_def[i];
2325        }
2326
2327        /* Sanity checks */
2328        if (tmscsim[0] > 7)
2329                tmscsim[0] = 7;
2330        if (tmscsim[1] > 7)
2331                tmscsim[1] = 4;
2332        if (tmscsim[4] > 5)
2333                tmscsim[4] = 4;
2334        if (tmscsim[5] > 180)
2335                tmscsim[5] = 180;
2336}
2337
2338static void __devinit dc390_check_eeprom(struct pci_dev *pdev, u8 index)
2339{
2340        u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120};
2341        u8 EEbuf[128];
2342        u16 *ptr = (u16 *)EEbuf, wval = 0;
2343        int i;
2344
2345        dc390_read_eeprom(pdev, ptr);
2346        memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
2347        memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID], 
2348               &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
2349
2350        dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]];
2351
2352        for (i = 0; i < 0x40; i++, ptr++)
2353                wval += *ptr;
2354
2355        /* no Tekram EEprom found */
2356        if (wval != 0x1234) {
2357                int speed;
2358
2359                printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
2360
2361                /*
2362                 * XXX(hch): bogus, because we might have tekram and
2363                 *           non-tekram hbas in a single machine.
2364                 */
2365                dc390_fill_with_defaults();
2366
2367                speed = dc390_clock_speed[tmscsim[1]];
2368                printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), "
2369                       "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n", 
2370                       tmscsim[0], tmscsim[1], speed / 10, speed % 10,
2371                       (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
2372        }
2373}
2374
2375static void __devinit dc390_init_hw(struct dc390_acb *pACB, u8 index)
2376{
2377        struct Scsi_Host *shost = pACB->pScsiHost;
2378        u8 dstate;
2379
2380        /* Disable SCSI bus reset interrupt */
2381        DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id);
2382
2383        if (pACB->Gmode2 & RST_SCSI_BUS) {
2384                dc390_ResetSCSIBus(pACB);
2385                udelay(1000);
2386                shost->last_reset = jiffies + HZ/2 +
2387                        HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2388        }
2389
2390        pACB->ACBFlag = 0;
2391
2392        /* Reset Pending INT */
2393        DC390_read8(INT_Status);
2394        
2395        /* 250ms selection timeout */
2396        DC390_write8(Scsi_TimeOut, SEL_TIMEOUT);
2397        
2398        /* Conversion factor = 0 , 40MHz clock */
2399        DC390_write8(Clk_Factor, CLK_FREQ_40MHZ);
2400        
2401        /* NOP cmd - clear command register */
2402        DC390_write8(ScsiCmd, NOP_CMD);
2403        
2404        /* Enable Feature and SCSI-2 */
2405        DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD);
2406        
2407        /* Fast clock */
2408        DC390_write8(CtrlReg3, FAST_CLK);
2409
2410        /* Negation */
2411        DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */
2412                (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ?
2413                 NEGATE_REQACKDATA : 0);
2414        
2415        /* Clear Transfer Count High: ID */
2416        DC390_write8(CtcReg_High, 0);
2417        DC390_write8(DMA_Cmd, DMA_IDLE_CMD);
2418        DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2419        DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2420
2421        dstate = DC390_read8(DMA_Status);
2422        DC390_write8(DMA_Status, dstate);
2423}
2424
2425static int __devinit dc390_probe_one(struct pci_dev *pdev,
2426                                    const struct pci_device_id *id)
2427{
2428        struct dc390_acb *pACB;
2429        struct Scsi_Host *shost;
2430        unsigned long io_port;
2431        int error = -ENODEV, i;
2432
2433        if (pci_enable_device(pdev))
2434                goto out;
2435
2436        pci_set_master(pdev);
2437
2438        error = -ENOMEM;
2439        if (disable_clustering)
2440                driver_template.use_clustering = DISABLE_CLUSTERING;
2441        shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
2442        if (!shost)
2443                goto out_disable_device;
2444
2445        pACB = (struct dc390_acb *)shost->hostdata;
2446        memset(pACB, 0, sizeof(struct dc390_acb));
2447
2448        dc390_check_eeprom(pdev, dc390_adapterCnt);
2449        dc390_eeprom_override(dc390_adapterCnt);
2450
2451        io_port = pci_resource_start(pdev, 0);
2452
2453        shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID];
2454        shost->io_port = io_port;
2455        shost->n_io_port = 0x80;
2456        shost->irq = pdev->irq;
2457        shost->base = io_port;
2458        shost->unique_id = io_port;
2459        shost->last_reset = jiffies;
2460        
2461        pACB->pScsiHost = shost;
2462        pACB->IOPortBase = (u16) io_port;
2463        pACB->IRQLevel = pdev->irq;
2464        
2465        shost->max_id = 8;
2466
2467        if (shost->max_id - 1 ==
2468            dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID])
2469                shost->max_id--;
2470
2471        if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK)
2472                shost->max_lun = 8;
2473        else
2474                shost->max_lun = 1;
2475
2476        pACB->pFreeSRB = pACB->SRB_array;
2477        pACB->SRBCount = MAX_SRB_CNT;
2478        pACB->AdapterIndex = dc390_adapterCnt;
2479        pACB->TagMaxNum =
2480                2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM];
2481        pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2];
2482
2483        for (i = 0; i < pACB->SRBCount-1; i++)
2484                pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
2485        pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL;
2486        pACB->pTmpSRB = &pACB->TmpSRB;
2487
2488        pACB->sel_timeout = SEL_TIMEOUT;
2489        pACB->glitch_cfg = EATER_25NS;
2490        pACB->pdev = pdev;
2491
2492        if (!request_region(io_port, shost->n_io_port, "tmscsim")) {
2493                printk(KERN_ERR "DC390: register IO ports error!\n");
2494                goto out_host_put;
2495        }
2496
2497        /* Reset Pending INT */
2498        DC390_read8_(INT_Status, io_port);
2499
2500        if (request_irq(pdev->irq, do_DC390_Interrupt, IRQF_SHARED,
2501                                "tmscsim", pACB)) {
2502                printk(KERN_ERR "DC390: register IRQ error!\n");
2503                goto out_release_region;
2504        }
2505
2506        dc390_init_hw(pACB, dc390_adapterCnt);
2507        
2508        dc390_adapterCnt++;
2509
2510        pci_set_drvdata(pdev, shost);
2511
2512        error = scsi_add_host(shost, &pdev->dev);
2513        if (error)
2514                goto out_free_irq;
2515        scsi_scan_host(shost);
2516        return 0;
2517
2518 out_free_irq:
2519        free_irq(pdev->irq, pACB);
2520 out_release_region:
2521        release_region(io_port, shost->n_io_port);
2522 out_host_put:
2523        scsi_host_put(shost);
2524 out_disable_device:
2525        pci_disable_device(pdev);
2526 out:
2527        return error;
2528}
2529
2530/**
2531 * dc390_remove_one - Called to remove a single instance of the adapter.
2532 *
2533 * @dev: The PCI device to remove.
2534 */
2535static void __devexit dc390_remove_one(struct pci_dev *dev)
2536{
2537        struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
2538        unsigned long iflags;
2539        struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata;
2540        u8 bval;
2541
2542        scsi_remove_host(scsi_host);
2543
2544        spin_lock_irqsave(scsi_host->host_lock, iflags);
2545        pACB->ACBFlag = RESET_DEV;
2546        bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2547        DC390_write8 (CtrlReg1, bval);  /* disable interrupt */
2548        if (pACB->Gmode2 & RST_SCSI_BUS)
2549                dc390_ResetSCSIBus(pACB);
2550        spin_unlock_irqrestore(scsi_host->host_lock, iflags);
2551
2552        free_irq(scsi_host->irq, pACB);
2553        release_region(scsi_host->io_port, scsi_host->n_io_port);
2554
2555        pci_disable_device(dev);
2556        scsi_host_put(scsi_host);
2557        pci_set_drvdata(dev, NULL);
2558}
2559
2560static struct pci_device_id tmscsim_pci_tbl[] = {
2561        { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974,
2562                PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
2563        { }
2564};
2565MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
2566
2567static struct pci_driver dc390_driver = {
2568        .name           = "tmscsim",
2569        .id_table       = tmscsim_pci_tbl,
2570        .probe          = dc390_probe_one,
2571        .remove         = __devexit_p(dc390_remove_one),
2572};
2573
2574static int __init dc390_module_init(void)
2575{
2576        if (!disable_clustering) {
2577                printk(KERN_INFO "DC390: clustering now enabled by default. If you get problems load\n");
2578                printk(KERN_INFO "       with \"disable_clustering=1\" and report to maintainers\n");
2579        }
2580
2581        if (tmscsim[0] == -1 || tmscsim[0] > 15) {
2582                tmscsim[0] = 7;
2583                tmscsim[1] = 4;
2584                tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_;
2585                tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION;
2586                tmscsim[4] = 2;
2587                tmscsim[5] = 10;
2588                printk (KERN_INFO "DC390: Using safe settings.\n");
2589        }
2590
2591        return pci_register_driver(&dc390_driver);
2592}
2593
2594static void __exit dc390_module_exit(void)
2595{
2596        pci_unregister_driver(&dc390_driver);
2597}
2598
2599module_init(dc390_module_init);
2600module_exit(dc390_module_exit);
2601
2602#ifndef MODULE
2603static int __init dc390_setup (char *str)
2604{       
2605        int ints[8],i, im;
2606
2607        get_options(str, ARRAY_SIZE(ints), ints);
2608        im = ints[0];
2609
2610        if (im > 6) {
2611                printk (KERN_NOTICE "DC390: ignore extra params!\n");
2612                im = 6;
2613        }
2614
2615        for (i = 0; i < im; i++)
2616                tmscsim[i] = ints[i+1];
2617        /* dc390_checkparams (); */
2618        return 1;
2619}
2620
2621__setup("tmscsim=", dc390_setup);
2622#endif
2623
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.