drivers/scsi/tmscsim.c

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