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 <linux/slab.h>
 237 #include <asm/io.h>
 238
 239 #include <scsi/scsi.h>
 240 #include <scsi/scsi_cmnd.h>
 241 #include <scsi/scsi_device.h>
 242 #include <scsi/scsi_host.h>
 243 #include <scsi/scsicam.h>
 244 #include <scsi/scsi_tcq.h>
 245
 246 #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         sg_init_one(sg, addr, length);
 434         return sg;
 435 }
 436
 437 /* Create pci mapping */
 438 static int dc390_pci_map (struct dc390_srb* pSRB)
 439 {
 440         int error = 0;
 441         struct scsi_cmnd *pcmd = pSRB->pcmd;
 442         struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
 443         dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
 444
 445         /* Map sense buffer */
 446         if (pSRB->SRBFlag & AUTO_REQSENSE) {
 447                 pSRB->pSegmentList      = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, SCSI_SENSE_BUFFERSIZE);
 448                 pSRB->SGcount           = pci_map_sg(pdev, pSRB->pSegmentList, 1,
 449                                                      DMA_FROM_DEVICE);
 450                 cmdp->saved_dma_handle  = sg_dma_address(pSRB->pSegmentList);
 451
 452                 /* TODO: error handling */
 453                 if (pSRB->SGcount != 1)
 454                         error = 1;
 455                 DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __func__, pcmd->sense_buffer, cmdp->saved_dma_handle));
 456         /* Map SG list */
 457         } else if (scsi_sg_count(pcmd)) {
 458                 int nseg;
 459
 460                 nseg = scsi_dma_map(pcmd);
 461
 462                 pSRB->pSegmentList      = scsi_sglist(pcmd);
 463                 pSRB->SGcount           = nseg;
 464
 465                 /* TODO: error handling */
 466                 if (nseg < 0)
 467                         error = 1;
 468                 DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
 469                               __func__, scsi_sglist(pcmd), nseg, scsi_sg_count(pcmd)));
 470         /* Map single segment */
 471         } else
 472                 pSRB->SGcount = 0;
 473
 474         return error;
 475 }
 476
 477 /* Remove pci mapping */
 478 static void dc390_pci_unmap (struct dc390_srb* pSRB)
 479 {
 480         struct scsi_cmnd *pcmd = pSRB->pcmd;
 481         struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
 482         DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)));
 483
 484         if (pSRB->SRBFlag) {
 485                 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE);
 486                 DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __func__, cmdp->saved_dma_handle));
 487         } else {
 488                 scsi_dma_unmap(pcmd);
 489                 DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n",
 490                               __func__, scsi_sglist(pcmd), scsi_sg_count(pcmd)));
 491         }
 492 }
 493
 494 static void __inline__
 495 dc390_freetag (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
 496 {
 497         if (pSRB->TagNumber != SCSI_NO_TAG) {
 498                 pDCB->TagMask &= ~(1 << pSRB->TagNumber);   /* free tag mask */
 499                 pSRB->TagNumber = SCSI_NO_TAG;
 500         }
 501 }
 502
 503
 504 static int
 505 dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
 506 {
 507     struct scsi_cmnd *scmd = pSRB->pcmd;
 508     struct scsi_device *sdev = scmd->device;
 509     u8 cmd, disc_allowed, try_sync_nego;
 510
 511     pSRB->ScsiPhase = SCSI_NOP0;
 512
 513     if (pACB->Connected)
 514     {
 515         // Should not happen normally
 516         printk (KERN_WARNING "DC390: Can't select when connected! (%08x,%02x)\n",
 517                 pSRB->SRBState, pSRB->SRBFlag);
 518         pSRB->SRBState = SRB_READY;
 519         pACB->SelConn++;
 520         return 1;
 521     }
 522     if (time_before (jiffies, pACB->last_reset))
 523     {
 524         DEBUG0(printk ("DC390: We were just reset and don't accept commands yet!\n"));
 525         return 1;
 526     }
 527     /* KG: Moved pci mapping here */
 528     dc390_pci_map(pSRB);
 529     /* TODO: error handling */
 530     DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
 531     DC390_write8 (Sync_Period, pDCB->SyncPeriod);
 532     DC390_write8 (Sync_Offset, pDCB->SyncOffset);
 533     DC390_write8 (CtrlReg1, pDCB->CtrlR1);
 534     DC390_write8 (CtrlReg3, pDCB->CtrlR3);
 535     DC390_write8 (CtrlReg4, pDCB->CtrlR4);
 536     DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);             /* Flush FIFO */
 537     DEBUG1(printk (KERN_INFO "DC390: Start SCSI command: %02x (Sync:%02x)\n",\
 538             scmd->cmnd[0], pDCB->SyncMode));
 539
 540     /* Don't disconnect on AUTO_REQSENSE, cause it might be an
 541      * Contingent Allegiance Condition (6.6), where no tags should be used.
 542      * All other have to be allowed to disconnect to prevent Incorrect
 543      * Initiator Connection (6.8.2/6.5.2) */
 544     /* Changed KG, 99/06/06 */
 545     if (! (pSRB->SRBFlag & AUTO_REQSENSE))
 546         disc_allowed = pDCB->DevMode & EN_DISCONNECT_;
 547     else
 548         disc_allowed = 0;
 549
 550     if ((pDCB->SyncMode & SYNC_ENABLE) && pDCB->TargetLUN == 0 && sdev->sdtr &&
 551         (((scmd->cmnd[0] == REQUEST_SENSE || (pSRB->SRBFlag & AUTO_REQSENSE)) &&
 552           !(pDCB->SyncMode & SYNC_NEGO_DONE)) || scmd->cmnd[0] == INQUIRY))
 553       try_sync_nego = 1;
 554     else
 555       try_sync_nego = 0;
 556
 557     pSRB->MsgCnt = 0;
 558     cmd = SEL_W_ATN;
 559     DC390_write8 (ScsiFifo, IDENTIFY(disc_allowed, pDCB->TargetLUN));
 560     /* Change 99/05/31: Don't use tags when not disconnecting (BUSY) */
 561     if ((pDCB->SyncMode & EN_TAG_QUEUEING) && disc_allowed && (scmd->flags & SCMD_TAGGED)) {
 562         DC390_write8(ScsiFifo, MSG_SIMPLE_TAG);
 563         pDCB->TagMask |= 1 << scmd->request->tag;
 564         pSRB->TagNumber = scmd->request->tag;
 565         DC390_write8(ScsiFifo, scmd->request->tag);
 566         DEBUG1(printk(KERN_INFO "DC390: Select w/DisCn for SRB %p, block tag %02x\n", pSRB, tag[1]));
 567         cmd = SEL_W_ATN3;
 568     } else {
 569         /* No TagQ */
 570 //no_tag:
 571         DEBUG1(printk(KERN_INFO "DC390: Select w%s/DisCn for SRB %p, No TagQ\n", disc_allowed ? "" : "o", pSRB));
 572     }
 573
 574     pSRB->SRBState = SRB_START_;
 575
 576     if (try_sync_nego)
 577       {
 578         u8 Sync_Off = pDCB->SyncOffset;
 579         DEBUG0(printk (KERN_INFO "DC390: NEW Sync Nego code triggered (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN));
 580         pSRB->MsgOutBuf[0] = EXTENDED_MESSAGE;
 581         pSRB->MsgOutBuf[1] = 3;
 582         pSRB->MsgOutBuf[2] = EXTENDED_SDTR;
 583         pSRB->MsgOutBuf[3] = pDCB->NegoPeriod;
 584         if (!(Sync_Off & 0x0f)) Sync_Off = SYNC_NEGO_OFFSET;
 585         pSRB->MsgOutBuf[4] = Sync_Off;
 586         pSRB->MsgCnt = 5;
 587         //pSRB->SRBState = SRB_MSGOUT_;
 588         pSRB->SRBState |= DO_SYNC_NEGO;
 589         cmd = SEL_W_ATN_STOP;
 590       }
 591
 592     /* Command is written in CommandPhase, if SEL_W_ATN_STOP ... */
 593     if (cmd != SEL_W_ATN_STOP)
 594       {
 595         if( pSRB->SRBFlag & AUTO_REQSENSE )
 596           {
 597             DC390_write8 (ScsiFifo, REQUEST_SENSE);
 598             DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
 599             DC390_write8 (ScsiFifo, 0);
 600             DC390_write8 (ScsiFifo, 0);
 601             DC390_write8 (ScsiFifo, SCSI_SENSE_BUFFERSIZE);
 602             DC390_write8 (ScsiFifo, 0);
 603             DEBUG1(printk (KERN_DEBUG "DC390: AutoReqSense !\n"));
 604           }
 605         else    /* write cmnd to bus */
 606           {
 607             u8 *ptr; u8 i;
 608             ptr = (u8 *)scmd->cmnd;
 609             for (i = 0; i < scmd->cmd_len; i++)
 610               DC390_write8 (ScsiFifo, *(ptr++));
 611           }
 612       }
 613     DEBUG0(if (pACB->pActiveDCB)        \
 614            printk (KERN_WARNING "DC390: ActiveDCB != 0\n"));
 615     DEBUG0(if (pDCB->pActiveSRB)        \
 616            printk (KERN_WARNING "DC390: ActiveSRB != 0\n"));
 617     //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
 618     if (DC390_read8 (Scsi_Status) & INTERRUPT)
 619     {
 620         dc390_freetag (pDCB, pSRB);
 621         DEBUG0(printk ("DC390: Interrupt during Start SCSI (target %02i-%02i)\n",
 622                        scmd->device->id, (u8)scmd->device->lun));
 623         pSRB->SRBState = SRB_READY;
 624         //DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
 625         pACB->SelLost++;
 626         return 1;
 627     }
 628     DC390_write8 (ScsiCmd, cmd);
 629     pACB->pActiveDCB = pDCB;
 630     pDCB->pActiveSRB = pSRB;
 631     pACB->Connected = 1;
 632     pSRB->ScsiPhase = SCSI_NOP1;
 633     return 0;
 634 }
 635
 636
 637 static void __inline__
 638 dc390_InvalidCmd(struct dc390_acb* pACB)
 639 {
 640         if (pACB->pActiveDCB->pActiveSRB->SRBState & (SRB_START_ | SRB_MSGOUT))
 641                 DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
 642 }
 643
 644
 645 static irqreturn_t __inline__
 646 DC390_Interrupt(void *dev_id)
 647 {
 648     struct dc390_acb *pACB = dev_id;
 649     struct dc390_dcb *pDCB;
 650     struct dc390_srb *pSRB;
 651     u8  sstatus=0;
 652     u8  phase;
 653     void   (*stateV)( struct dc390_acb*, struct dc390_srb*, u8 *);
 654     u8  istate, istatus;
 655
 656     sstatus = DC390_read8 (Scsi_Status);
 657     if( !(sstatus & INTERRUPT) )
 658         return IRQ_NONE;
 659
 660     DEBUG1(printk (KERN_DEBUG "sstatus=%02x,", sstatus));
 661
 662     //DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
 663     //dstatus = DC390_read8 (DMA_Status);
 664     //DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
 665
 666     spin_lock_irq(pACB->pScsiHost->host_lock);
 667
 668     istate = DC390_read8 (Intern_State);
 669     istatus = DC390_read8 (INT_Status); /* This clears Scsi_Status, Intern_State and INT_Status ! */
 670
 671     DEBUG1(printk (KERN_INFO "Istatus(Res,Inv,Dis,Serv,Succ,ReS,SelA,Sel)=%02x,",istatus));
 672     dc390_laststatus &= ~0x00ffffff;
 673     dc390_laststatus |= /* dstatus<<24 | */ sstatus<<16 | istate<<8 | istatus;
 674
 675     if (sstatus & ILLEGAL_OP_ERR)
 676     {
 677         printk ("DC390: Illegal Operation detected (%08x)!\n", dc390_laststatus);
 678         dc390_dumpinfo (pACB, pACB->pActiveDCB, pACB->pActiveDCB->pActiveSRB);
 679     }
 680
 681     else if (istatus &  INVALID_CMD)
 682     {
 683         printk ("DC390: Invalid Command detected (%08x)!\n", dc390_laststatus);
 684         dc390_InvalidCmd( pACB );
 685         goto unlock;
 686     }
 687
 688     if (istatus &  SCSI_RESET)
 689     {
 690         dc390_ScsiRstDetect( pACB );
 691         goto unlock;
 692     }
 693
 694     if (istatus &  DISCONNECTED)
 695     {
 696         dc390_Disconnect( pACB );
 697         goto unlock;
 698     }
 699
 700     if (istatus &  RESELECTED)
 701     {
 702         dc390_Reselect( pACB );
 703         goto unlock;
 704     }
 705
 706     else if (istatus & (SELECTED | SEL_ATTENTION))
 707     {
 708         printk (KERN_ERR "DC390: Target mode not supported!\n");
 709         goto unlock;
 710     }
 711
 712     if (istatus & (SUCCESSFUL_OP|SERVICE_REQUEST) )
 713     {
 714         pDCB = pACB->pActiveDCB;
 715         if (!pDCB)
 716         {
 717                 printk (KERN_ERR "DC390: Suc. op/ Serv. req: pActiveDCB = 0!\n");
 718                 goto unlock;
 719         }
 720         pSRB = pDCB->pActiveSRB;
 721         if( pDCB->DCBFlag & ABORT_DEV_ )
 722           dc390_EnableMsgOut_Abort (pACB, pSRB);
 723
 724         phase = pSRB->ScsiPhase;
 725         DEBUG1(printk (KERN_INFO "DC390: [%i]%s(0) (%02x)\n", phase, dc390_p0_str[phase], sstatus));
 726         stateV = (void *) dc390_phase0[phase];
 727         ( *stateV )( pACB, pSRB, &sstatus );
 728
 729         pSRB->ScsiPhase = sstatus & 7;
 730         phase = (u8) sstatus & 7;
 731         DEBUG1(printk (KERN_INFO "DC390: [%i]%s(1) (%02x)\n", phase, dc390_p1_str[phase], sstatus));
 732         stateV = (void *) dc390_phase1[phase];
 733         ( *stateV )( pACB, pSRB, &sstatus );
 734     }
 735
 736  unlock:
 737     spin_unlock_irq(pACB->pScsiHost->host_lock);
 738     return IRQ_HANDLED;
 739 }
 740
 741 static irqreturn_t do_DC390_Interrupt(int irq, void *dev_id)
 742 {
 743     irqreturn_t ret;
 744     DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
 745     /* Locking is done in DC390_Interrupt */
 746     ret = DC390_Interrupt(dev_id);
 747     DEBUG1(printk (".. IRQ returned\n"));
 748     return ret;
 749 }
 750
 751 static void
 752 dc390_DataOut_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
 753 {
 754     u8   sstatus;
 755     u32  ResidCnt;
 756     u8   dstate = 0;
 757
 758     sstatus = *psstatus;
 759
 760     if( !(pSRB->SRBState & SRB_XFERPAD) )
 761     {
 762         if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR) )
 763             pSRB->SRBStatus |= PARITY_ERROR;
 764
 765         if( sstatus & COUNT_2_ZERO )
 766         {
 767             unsigned long timeout = jiffies + HZ;
 768
 769             /* Function called from the ISR with the host_lock held and interrupts disabled */
 770             if (pSRB->SGToBeXferLen)
 771                 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
 772                     spin_unlock_irq(pACB->pScsiHost->host_lock);
 773                     udelay(50);
 774                     spin_lock_irq(pACB->pScsiHost->host_lock);
 775                 }
 776             if (!time_before(jiffies, timeout))
 777                 printk (KERN_CRIT "DC390: Deadlock in DataOut_0: DMA aborted unfinished: %06x bytes remain!!\n",
 778                         DC390_read32 (DMA_Wk_ByteCntr));
 779             dc390_laststatus &= ~0xff000000;
 780             dc390_laststatus |= dstate << 24;
 781             pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
 782             pSRB->SGIndex++;
 783             if( pSRB->SGIndex < pSRB->SGcount )
 784             {
 785                 pSRB->pSegmentList++;
 786
 787                 dc390_start_segment(pSRB);
 788             }
 789             else
 790                 pSRB->SGToBeXferLen = 0;
 791         }
 792         else
 793         {
 794             ResidCnt = ((u32) DC390_read8 (Current_Fifo) & 0x1f) +
 795                     (((u32) DC390_read8 (CtcReg_High) << 16) |
 796                      ((u32) DC390_read8 (CtcReg_Mid) << 8) |
 797                      (u32) DC390_read8 (CtcReg_Low));
 798
 799             dc390_advance_segment(pSRB, ResidCnt);
 800         }
 801     }
 802     if ((*psstatus & 7) != SCSI_DATA_OUT)
 803     {
 804             DC390_write8 (DMA_Cmd, WRITE_DIRECTION+DMA_IDLE_CMD);
 805             DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
 806     }
 807 }
 808
 809 static void
 810 dc390_DataIn_0(struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
 811 {
 812     u8   sstatus, residual, bval;
 813     u32  ResidCnt, i;
 814     unsigned long   xferCnt;
 815
 816     sstatus = *psstatus;
 817
 818     if( !(pSRB->SRBState & SRB_XFERPAD) )
 819     {
 820         if( sstatus & (PARITY_ERR | ILLEGAL_OP_ERR))
 821             pSRB->SRBStatus |= PARITY_ERROR;
 822
 823         if( sstatus & COUNT_2_ZERO )
 824         {
 825             int dstate = 0;
 826             unsigned long timeout = jiffies + HZ;
 827
 828             /* Function called from the ISR with the host_lock held and interrupts disabled */
 829             if (pSRB->SGToBeXferLen)
 830                 while (time_before(jiffies, timeout) && !((dstate = DC390_read8 (DMA_Status)) & DMA_XFER_DONE)) {
 831                     spin_unlock_irq(pACB->pScsiHost->host_lock);
 832                     udelay(50);
 833                     spin_lock_irq(pACB->pScsiHost->host_lock);
 834                 }
 835             if (!time_before(jiffies, timeout)) {
 836                 printk (KERN_CRIT "DC390: Deadlock in DataIn_0: DMA aborted unfinished: %06x bytes remain!!\n",
 837                         DC390_read32 (DMA_Wk_ByteCntr));
 838                 printk (KERN_CRIT "DC390: DataIn_0: DMA State: %i\n", dstate);
 839             }
 840             dc390_laststatus &= ~0xff000000;
 841             dc390_laststatus |= dstate << 24;
 842             DEBUG1(ResidCnt = ((unsigned long) DC390_read8 (CtcReg_High) << 16) \
 843                 + ((unsigned long) DC390_read8 (CtcReg_Mid) << 8)               \
 844                 + ((unsigned long) DC390_read8 (CtcReg_Low)));
 845             DEBUG1(printk (KERN_DEBUG "Count_2_Zero (ResidCnt=%u,ToBeXfer=%lu),", ResidCnt, pSRB->SGToBeXferLen));
 846
 847             DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
 848
 849             pSRB->TotalXferredLen += pSRB->SGToBeXferLen;
 850             pSRB->SGIndex++;
 851             if( pSRB->SGIndex < pSRB->SGcount )
 852             {
 853                 pSRB->pSegmentList++;
 854
 855                 dc390_start_segment(pSRB);
 856             }
 857             else
 858                 pSRB->SGToBeXferLen = 0;
 859         }
 860         else    /* phase changed */
 861         {
 862             residual = 0;
 863             bval = DC390_read8 (Current_Fifo);
 864             while( bval & 0x1f )
 865             {
 866                 DEBUG1(printk (KERN_DEBUG "Check for residuals,"));
 867                 if( (bval & 0x1f) == 1 )
 868                 {
 869                     for(i=0; i < 0x100; i++)
 870                     {
 871                         bval = DC390_read8 (Current_Fifo);
 872                         if( !(bval & 0x1f) )
 873                             goto din_1;
 874                         else if( i == 0x0ff )
 875                         {
 876                             residual = 1;   /* ;1 residual byte */
 877                             goto din_1;
 878                         }
 879                     }
 880                 }
 881                 else
 882                     bval = DC390_read8 (Current_Fifo);
 883             }
 884 din_1:
 885             DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_BLAST_CMD);
 886             for (i = 0xa000; i; i--)
 887             {
 888                 bval = DC390_read8 (DMA_Status);
 889                 if (bval & BLAST_COMPLETE)
 890                     break;
 891             }
 892             /* It seems a DMA Blast abort isn't that bad ... */
 893             if (!i) printk (KERN_ERR "DC390: DMA Blast aborted unfinished!\n");
 894             //DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
 895             dc390_laststatus &= ~0xff000000;
 896             dc390_laststatus |= bval << 24;
 897
 898             DEBUG1(printk (KERN_DEBUG "Blast: Read %i times DMA_Status %02x", 0xa000-i, bval));
 899             ResidCnt = (((u32) DC390_read8 (CtcReg_High) << 16) |
 900                         ((u32) DC390_read8 (CtcReg_Mid) << 8)) |
 901                     (u32) DC390_read8 (CtcReg_Low);
 902
 903             xferCnt = dc390_advance_segment(pSRB, ResidCnt);
 904
 905             if (residual) {
 906                 size_t count = 1;
 907                 size_t offset = pSRB->SGBusAddr - sg_dma_address(pSRB->pSegmentList);
 908                 unsigned long flags;
 909                 u8 *ptr;
 910
 911                 bval = DC390_read8 (ScsiFifo);      /* get one residual byte */
 912
 913                 local_irq_save(flags);
 914                 ptr = scsi_kmap_atomic_sg(pSRB->pSegmentList, pSRB->SGcount, &offset, &count);
 915                 if (likely(ptr)) {
 916                         *(ptr + offset) = bval;
 917                         scsi_kunmap_atomic_sg(ptr);
 918                 }
 919                 local_irq_restore(flags);
 920                 WARN_ON(!ptr);
 921
 922                 /* 1 more byte read */
 923                 xferCnt += dc390_advance_segment(pSRB, pSRB->SGToBeXferLen - 1);
 924             }
 925             DEBUG1(printk (KERN_DEBUG "Xfered: %lu, Total: %lu, Remaining: %lu\n", xferCnt,\
 926                            pSRB->TotalXferredLen, pSRB->SGToBeXferLen));
 927         }
 928     }
 929     if ((*psstatus & 7) != SCSI_DATA_IN)
 930     {
 931             DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
 932             DC390_write8 (DMA_Cmd, READ_DIRECTION+DMA_IDLE_CMD);
 933     }
 934 }
 935
 936 static void
 937 dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
 938 {
 939 }
 940
 941 static void
 942 dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
 943 {
 944
 945     pSRB->TargetStatus = DC390_read8 (ScsiFifo);
 946     //udelay (1);
 947     pSRB->EndMessage = DC390_read8 (ScsiFifo);  /* get message */
 948
 949     *psstatus = SCSI_NOP0;
 950     pSRB->SRBState = SRB_COMPLETED;
 951     DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
 952 }
 953
 954 static void
 955 dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
 956 {
 957     if( pSRB->SRBState & (SRB_UNEXPECT_RESEL+SRB_ABORT_SENT) )
 958         *psstatus = SCSI_NOP0;
 959     //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
 960 }
 961
 962
 963 static void __inline__
 964 dc390_reprog (struct dc390_acb* pACB, struct dc390_dcb* pDCB)
 965 {
 966   DC390_write8 (Sync_Period, pDCB->SyncPeriod);
 967   DC390_write8 (Sync_Offset, pDCB->SyncOffset);
 968   DC390_write8 (CtrlReg3, pDCB->CtrlR3);
 969   DC390_write8 (CtrlReg4, pDCB->CtrlR4);
 970   dc390_SetXferRate (pACB, pDCB);
 971 }
 972
 973
 974 #ifdef DC390_DEBUG0
 975 static void
 976 dc390_printMsg (u8 *MsgBuf, u8 len)
 977 {
 978   int i;
 979   printk (" %02x", MsgBuf[0]);
 980   for (i = 1; i < len; i++)
 981     printk (" %02x", MsgBuf[i]);
 982   printk ("\n");
 983 }
 984 #endif
 985
 986 #define DC390_ENABLE_MSGOUT DC390_write8 (ScsiCmd, SET_ATN_CMD)
 987
 988 /* reject_msg */
 989 static void __inline__
 990 dc390_MsgIn_reject (struct dc390_acb* pACB, struct dc390_srb* pSRB)
 991 {
 992   pSRB->MsgOutBuf[0] = MESSAGE_REJECT;
 993   pSRB->MsgCnt = 1;
 994   DC390_ENABLE_MSGOUT;
 995   DEBUG0 (printk (KERN_INFO "DC390: Reject message\n"));
 996 }
 997
 998 /* abort command */
 999 static void
1000 dc390_EnableMsgOut_Abort ( struct dc390_acb* pACB, struct dc390_srb* pSRB )
1001 {
1002     pSRB->MsgOutBuf[0] = ABORT;
1003     pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1004     pSRB->pSRBDCB->DCBFlag &= ~ABORT_DEV_;
1005 }
1006
1007 static struct dc390_srb*
1008 dc390_MsgIn_QTag (struct dc390_acb* pACB, struct dc390_dcb* pDCB, s8 tag)
1009 {
1010   struct dc390_srb* pSRB = pDCB->pGoingSRB;
1011
1012   if (pSRB)
1013     {
1014         struct scsi_cmnd *scmd = scsi_find_tag(pSRB->pcmd->device, tag);
1015         pSRB = (struct dc390_srb *)scmd->host_scribble;
1016
1017         if (pDCB->DCBFlag & ABORT_DEV_)
1018         {
1019           pSRB->SRBState = SRB_ABORT_SENT;
1020           dc390_EnableMsgOut_Abort( pACB, pSRB );
1021         }
1022
1023         if (!(pSRB->SRBState & SRB_DISCONNECT))
1024                 goto mingx0;
1025
1026         pDCB->pActiveSRB = pSRB;
1027         pSRB->SRBState = SRB_DATA_XFER;
1028     }
1029   else
1030     {
1031     mingx0:
1032       pSRB = pACB->pTmpSRB;
1033       pSRB->SRBState = SRB_UNEXPECT_RESEL;
1034       pDCB->pActiveSRB = pSRB;
1035       pSRB->MsgOutBuf[0] = ABORT_TAG;
1036       pSRB->MsgCnt = 1; DC390_ENABLE_MSGOUT;
1037     }
1038   return pSRB;
1039 }
1040
1041
1042 /* set async transfer mode */
1043 static void
1044 dc390_MsgIn_set_async (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1045 {
1046   struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1047   if (!(pSRB->SRBState & DO_SYNC_NEGO))
1048     printk (KERN_INFO "DC390: Target %i initiates Non-Sync?\n", pDCB->TargetID);
1049   pSRB->SRBState &= ~DO_SYNC_NEGO;
1050   pDCB->SyncMode &= ~(SYNC_ENABLE+SYNC_NEGO_DONE);
1051   pDCB->SyncPeriod = 0;
1052   pDCB->SyncOffset = 0;
1053   //pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1054   pDCB->CtrlR3 = FAST_CLK;      /* fast clock / normal scsi */
1055   pDCB->CtrlR4 &= 0x3f;
1056   pDCB->CtrlR4 |= pACB->glitch_cfg;     /* glitch eater */
1057   dc390_reprog (pACB, pDCB);
1058 }
1059
1060 /* set sync transfer mode */
1061 static void
1062 dc390_MsgIn_set_sync (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1063 {
1064   u8 bval;
1065   u16 wval, wval1;
1066   struct dc390_dcb* pDCB = pSRB->pSRBDCB;
1067   u8 oldsyncperiod = pDCB->SyncPeriod;
1068   u8 oldsyncoffset = pDCB->SyncOffset;
1069
1070   if (!(pSRB->SRBState & DO_SYNC_NEGO))
1071     {
1072       printk (KERN_INFO "DC390: Target %i initiates Sync: %ins %i ... answer ...\n",
1073               pDCB->TargetID, pSRB->MsgInBuf[3]<<2, pSRB->MsgInBuf[4]);
1074
1075       /* reject */
1076       //dc390_MsgIn_reject (pACB, pSRB);
1077       //return dc390_MsgIn_set_async (pACB, pSRB);
1078
1079       /* Reply with corrected SDTR Message */
1080       if (pSRB->MsgInBuf[4] > 15)
1081         {
1082           printk (KERN_INFO "DC390: Lower Sync Offset to 15\n");
1083           pSRB->MsgInBuf[4] = 15;
1084         }
1085       if (pSRB->MsgInBuf[3] < pDCB->NegoPeriod)
1086         {
1087           printk (KERN_INFO "DC390: Set sync nego period to %ins\n", pDCB->NegoPeriod << 2);
1088           pSRB->MsgInBuf[3] = pDCB->NegoPeriod;
1089         }
1090       memcpy (pSRB->MsgOutBuf, pSRB->MsgInBuf, 5);
1091       pSRB->MsgCnt = 5;
1092       DC390_ENABLE_MSGOUT;
1093     }
1094
1095   pSRB->SRBState &= ~DO_SYNC_NEGO;
1096   pDCB->SyncMode |= SYNC_ENABLE+SYNC_NEGO_DONE;
1097   pDCB->SyncOffset &= 0x0f0;
1098   pDCB->SyncOffset |= pSRB->MsgInBuf[4];
1099   pDCB->NegoPeriod = pSRB->MsgInBuf[3];
1100
1101   wval = (u16) pSRB->MsgInBuf[3];
1102   wval = wval << 2; wval -= 3; wval1 = wval / 25;       /* compute speed */
1103   if( (wval1 * 25) != wval) wval1++;
1104   bval = FAST_CLK+FAST_SCSI;    /* fast clock / fast scsi */
1105
1106   pDCB->CtrlR4 &= 0x3f;         /* Glitch eater: 12ns less than normal */
1107   if (pACB->glitch_cfg != NS_TO_GLITCH(0))
1108     pDCB->CtrlR4 |= NS_TO_GLITCH(((GLITCH_TO_NS(pACB->glitch_cfg)) - 1));
1109   else
1110     pDCB->CtrlR4 |= NS_TO_GLITCH(0);
1111   if (wval1 < 4) pDCB->CtrlR4 |= NS_TO_GLITCH(0); /* Ultra */
1112
1113   if (wval1 >= 8)
1114     {
1115       wval1--;  /* Timing computation differs by 1 from FAST_SCSI */
1116       bval = FAST_CLK;          /* fast clock / normal scsi */
1117       pDCB->CtrlR4 |= pACB->glitch_cfg;         /* glitch eater */
1118     }
1119
1120   pDCB->CtrlR3 = bval;
1121   pDCB->SyncPeriod = (u8)wval1;
1122
1123   if ((oldsyncperiod != wval1 || oldsyncoffset != pDCB->SyncOffset) && pDCB->TargetLUN == 0)
1124     {
1125       if (! (bval & FAST_SCSI)) wval1++;
1126       printk (KERN_INFO "DC390: Target %i: Sync transfer %i.%1i MHz, Offset %i\n", pDCB->TargetID,
1127               40/wval1, ((40%wval1)*10+wval1/2)/wval1, pDCB->SyncOffset & 0x0f);
1128     }
1129
1130   dc390_reprog (pACB, pDCB);
1131 }
1132
1133
1134 /* handle RESTORE_PTR */
1135 /* This doesn't look very healthy... to-be-fixed */
1136 static void
1137 dc390_restore_ptr (struct dc390_acb* pACB, struct dc390_srb* pSRB)
1138 {
1139     struct scsi_cmnd *pcmd = pSRB->pcmd;
1140     struct scatterlist *psgl;
1141     pSRB->TotalXferredLen = 0;
1142     pSRB->SGIndex = 0;
1143     if (scsi_sg_count(pcmd)) {
1144         size_t saved;
1145         pSRB->pSegmentList = scsi_sglist(pcmd);
1146         psgl = pSRB->pSegmentList;
1147         //dc390_pci_sync(pSRB);
1148
1149         while (pSRB->TotalXferredLen + (unsigned long) sg_dma_len(psgl) < pSRB->Saved_Ptr)
1150         {
1151             pSRB->TotalXferredLen += (unsigned long) sg_dma_len(psgl);
1152             pSRB->SGIndex++;
1153             if( pSRB->SGIndex < pSRB->SGcount )
1154             {
1155                 pSRB->pSegmentList++;
1156
1157                 dc390_start_segment(pSRB);
1158             }
1159             else
1160                 pSRB->SGToBeXferLen = 0;
1161         }
1162
1163         saved = pSRB->Saved_Ptr - pSRB->TotalXferredLen;
1164         pSRB->SGToBeXferLen -= saved;
1165         pSRB->SGBusAddr += saved;
1166         printk (KERN_INFO "DC390: Pointer restored. Segment %i, Total %li, Bus %08lx\n",
1167                 pSRB->SGIndex, pSRB->Saved_Ptr, pSRB->SGBusAddr);
1168
1169     } else {
1170          pSRB->SGcount = 0;
1171          printk (KERN_INFO "DC390: RESTORE_PTR message for Transfer without Scatter-Gather ??\n");
1172     }
1173
1174   pSRB->TotalXferredLen = pSRB->Saved_Ptr;
1175 }
1176
1177
1178 /* According to the docs, the AM53C974 reads the message and
1179  * generates a Successful Operation IRQ before asserting ACK for
1180  * the last byte (how does it know whether it's the last ?) */
1181 /* The old code handled it in another way, indicating, that on
1182  * every message byte an IRQ is generated and every byte has to
1183  * be manually ACKed. Hmmm ?  (KG, 98/11/28) */
1184 /* The old implementation was correct. Sigh! */
1185
1186 /* Check if the message is complete */
1187 static u8 __inline__
1188 dc390_MsgIn_complete (u8 *msgbuf, u32 len)
1189 {
1190   if (*msgbuf == EXTENDED_MESSAGE)
1191   {
1192         if (len < 2) return 0;
1193         if (len < msgbuf[1] + 2) return 0;
1194   }
1195   else if (*msgbuf >= 0x20 && *msgbuf <= 0x2f) // two byte messages
1196         if (len < 2) return 0;
1197   return 1;
1198 }
1199
1200
1201
1202 /* read and eval received messages */
1203 static void
1204 dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1205 {
1206     struct dc390_dcb*   pDCB = pACB->pActiveDCB;
1207
1208     /* Read the msg */
1209
1210     pSRB->MsgInBuf[pACB->MsgLen++] = DC390_read8 (ScsiFifo);
1211     //pSRB->SRBState = 0;
1212
1213     /* Msg complete ? */
1214     if (dc390_MsgIn_complete (pSRB->MsgInBuf, pACB->MsgLen))
1215       {
1216         DEBUG0 (printk (KERN_INFO "DC390: MsgIn:"); dc390_printMsg (pSRB->MsgInBuf, pACB->MsgLen));
1217         /* Now eval the msg */
1218         switch (pSRB->MsgInBuf[0])
1219           {
1220           case DISCONNECT:
1221             pSRB->SRBState = SRB_DISCONNECT; break;
1222
1223           case SIMPLE_QUEUE_TAG:
1224           case HEAD_OF_QUEUE_TAG:
1225           case ORDERED_QUEUE_TAG:
1226             pSRB = dc390_MsgIn_QTag (pACB, pDCB, pSRB->MsgInBuf[1]);
1227             break;
1228
1229           case MESSAGE_REJECT:
1230             DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1231             pDCB->NegoPeriod = 50; /* 200ns <=> 5 MHz */
1232             if( pSRB->SRBState & DO_SYNC_NEGO)
1233               dc390_MsgIn_set_async (pACB, pSRB);
1234             break;
1235
1236           case EXTENDED_MESSAGE:
1237             /* reject every extended msg but SDTR */
1238             if (pSRB->MsgInBuf[1] != 3 || pSRB->MsgInBuf[2] != EXTENDED_SDTR)
1239               dc390_MsgIn_reject (pACB, pSRB);
1240             else
1241               {
1242                 if (pSRB->MsgInBuf[3] == 0 || pSRB->MsgInBuf[4] == 0)
1243                   dc390_MsgIn_set_async (pACB, pSRB);
1244                 else
1245                   dc390_MsgIn_set_sync (pACB, pSRB);
1246               }
1247
1248             // nothing has to be done
1249           case COMMAND_COMPLETE: break;
1250
1251             // SAVE POINTER may be ignored as we have the struct dc390_srb* associated with the
1252             // scsi command. Thanks, Gerard, for pointing it out.
1253           case SAVE_POINTERS:
1254             pSRB->Saved_Ptr = pSRB->TotalXferredLen;
1255             break;
1256             // The device might want to restart transfer with a RESTORE
1257           case RESTORE_POINTERS:
1258             DEBUG0(printk ("DC390: RESTORE POINTER message received ... try to handle\n"));
1259             dc390_restore_ptr (pACB, pSRB);
1260             break;
1261
1262             // reject unknown messages
1263           default: dc390_MsgIn_reject (pACB, pSRB);
1264           }
1265
1266         /* Clear counter and MsgIn state */
1267         pSRB->SRBState &= ~SRB_MSGIN;
1268         pACB->MsgLen = 0;
1269       }
1270
1271     *psstatus = SCSI_NOP0;
1272     DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);
1273     //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1274 }
1275
1276
1277 static void
1278 dc390_DataIO_Comm( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 ioDir)
1279 {
1280     unsigned long  lval;
1281     struct dc390_dcb*   pDCB = pACB->pActiveDCB;
1282
1283     if (pSRB == pACB->pTmpSRB)
1284     {
1285         if (pDCB)
1286                 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (%02i-%i)\n", pDCB->TargetID, pDCB->TargetLUN);
1287         else
1288                 printk(KERN_ERR "DC390: pSRB == pTmpSRB! (TagQ Error?) (DCB 0!)\n");
1289
1290         /* Try to recover - some broken disks react badly to tagged INQUIRY */
1291         if (pDCB && pACB->scan_devices && pDCB->GoingSRBCnt == 1) {
1292                 pSRB = pDCB->pGoingSRB;
1293                 pDCB->pActiveSRB = pSRB;
1294         } else {
1295                 pSRB->pSRBDCB = pDCB;
1296                 dc390_EnableMsgOut_Abort(pACB, pSRB);
1297                 if (pDCB)
1298                         pDCB->DCBFlag |= ABORT_DEV;
1299                 return;
1300         }
1301     }
1302
1303     if( pSRB->SGIndex < pSRB->SGcount )
1304     {
1305         DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1306         if( !pSRB->SGToBeXferLen )
1307         {
1308             dc390_start_segment(pSRB);
1309
1310             DEBUG1(printk (KERN_DEBUG " DC390: Next SG segment."));
1311         }
1312         lval = pSRB->SGToBeXferLen;
1313         DEBUG1(printk (KERN_DEBUG " DC390: Start transfer: %li bytes (address %08lx)\n", lval, pSRB->SGBusAddr));
1314         DC390_write8 (CtcReg_Low, (u8) lval);
1315         lval >>= 8;
1316         DC390_write8 (CtcReg_Mid, (u8) lval);
1317         lval >>= 8;
1318         DC390_write8 (CtcReg_High, (u8) lval);
1319
1320         DC390_write32 (DMA_XferCnt, pSRB->SGToBeXferLen);
1321         DC390_write32 (DMA_XferAddr, pSRB->SGBusAddr);
1322
1323         //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1324         pSRB->SRBState = SRB_DATA_XFER;
1325
1326         DC390_write8 (ScsiCmd, DMA_COMMAND+INFO_XFER_CMD);
1327
1328         DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
1329         //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT));
1330         //DEBUG1(printk (KERN_DEBUG "DC390: DMA_Status: %02x\n", DC390_read8 (DMA_Status)));
1331         //DEBUG1(DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT));
1332     }
1333     else    /* xfer pad */
1334     {
1335         if( pSRB->SGcount )
1336         {
1337             pSRB->AdaptStatus = H_OVER_UNDER_RUN;
1338             pSRB->SRBStatus |= OVER_RUN;
1339             DEBUG0(printk (KERN_WARNING " DC390: Overrun -"));
1340         }
1341         DEBUG0(printk (KERN_WARNING " Clear transfer pad \n"));
1342         DC390_write8 (CtcReg_Low, 0);
1343         DC390_write8 (CtcReg_Mid, 0);
1344         DC390_write8 (CtcReg_High, 0);
1345
1346         pSRB->SRBState |= SRB_XFERPAD;
1347         DC390_write8 (ScsiCmd, DMA_COMMAND+XFER_PAD_BYTE);
1348 /*
1349         DC390_write8 (DMA_Cmd, DMA_IDLE_CMD | ioDir);
1350         DC390_write8 (DMA_Cmd, DMA_START_CMD | ioDir);
1351 */
1352     }
1353 }
1354
1355
1356 static void
1357 dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1358 {
1359     dc390_DataIO_Comm (pACB, pSRB, WRITE_DIRECTION);
1360 }
1361
1362 static void
1363 dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1364 {
1365     dc390_DataIO_Comm (pACB, pSRB, READ_DIRECTION);
1366 }
1367
1368 static void
1369 dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1370 {
1371     struct dc390_dcb*   pDCB;
1372     u8  i, cnt;
1373     u8     *ptr;
1374
1375     DC390_write8 (ScsiCmd, RESET_ATN_CMD);
1376     DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1377     if( !(pSRB->SRBFlag & AUTO_REQSENSE) )
1378     {
1379         cnt = (u8) pSRB->pcmd->cmd_len;
1380         ptr = (u8 *) pSRB->pcmd->cmnd;
1381         for(i=0; i < cnt; i++)
1382             DC390_write8 (ScsiFifo, *(ptr++));
1383     }
1384     else
1385     {
1386         DC390_write8 (ScsiFifo, REQUEST_SENSE);
1387         pDCB = pACB->pActiveDCB;
1388         DC390_write8 (ScsiFifo, pDCB->TargetLUN << 5);
1389         DC390_write8 (ScsiFifo, 0);
1390         DC390_write8 (ScsiFifo, 0);
1391         DC390_write8 (ScsiFifo, SCSI_SENSE_BUFFERSIZE);
1392         DC390_write8 (ScsiFifo, 0);
1393         DEBUG0(printk(KERN_DEBUG "DC390: AutoReqSense (CmndPhase)!\n"));
1394     }
1395     pSRB->SRBState = SRB_COMMAND;
1396     DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1397 }
1398
1399 static void
1400 dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1401 {
1402     DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1403     pSRB->SRBState = SRB_STATUS;
1404     DC390_write8 (ScsiCmd, INITIATOR_CMD_CMPLTE);
1405     //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1406 }
1407
1408 static void
1409 dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1410 {
1411     u8   bval, i, cnt;
1412     u8     *ptr;
1413     struct dc390_dcb*    pDCB;
1414
1415     DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1416     pDCB = pACB->pActiveDCB;
1417     if( !(pSRB->SRBState & SRB_MSGOUT) )
1418     {
1419         cnt = pSRB->MsgCnt;
1420         if( cnt )
1421         {
1422             ptr = (u8 *) pSRB->MsgOutBuf;
1423             for(i=0; i < cnt; i++)
1424                 DC390_write8 (ScsiFifo, *(ptr++));
1425             pSRB->MsgCnt = 0;
1426             if( (pDCB->DCBFlag & ABORT_DEV_) &&
1427                 (pSRB->MsgOutBuf[0] == ABORT) )
1428                 pSRB->SRBState = SRB_ABORT_SENT;
1429         }
1430         else
1431         {
1432             bval = ABORT;       /* ??? MSG_NOP */
1433             if( (pSRB->pcmd->cmnd[0] == INQUIRY ) ||
1434                 (pSRB->pcmd->cmnd[0] == REQUEST_SENSE) ||
1435                 (pSRB->SRBFlag & AUTO_REQSENSE) )
1436             {
1437                 if( pDCB->SyncMode & SYNC_ENABLE )
1438                     goto  mop1;
1439             }
1440             DC390_write8 (ScsiFifo, bval);
1441         }
1442         DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1443     }
1444     else
1445     {
1446 mop1:
1447         printk (KERN_ERR "DC390: OLD Sync Nego code triggered! (%i %i)\n", pDCB->TargetID, pDCB->TargetLUN);
1448         DC390_write8 (ScsiFifo, EXTENDED_MESSAGE);
1449         DC390_write8 (ScsiFifo, 3);     /*    ;length of extended msg */
1450         DC390_write8 (ScsiFifo, EXTENDED_SDTR); /*    ; sync nego */
1451         DC390_write8 (ScsiFifo, pDCB->NegoPeriod);
1452         if (pDCB->SyncOffset & 0x0f)
1453                     DC390_write8 (ScsiFifo, pDCB->SyncOffset);
1454         else
1455                     DC390_write8 (ScsiFifo, SYNC_NEGO_OFFSET);
1456         pSRB->SRBState |= DO_SYNC_NEGO;
1457         DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1458     }
1459 }
1460
1461 static void
1462 dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1463 {
1464     DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1465     if( !(pSRB->SRBState & SRB_MSGIN) )
1466     {
1467         pSRB->SRBState &= ~SRB_DISCONNECT;
1468         pSRB->SRBState |= SRB_MSGIN;
1469     }
1470     DC390_write8 (ScsiCmd, INFO_XFER_CMD);
1471     //DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1472 }
1473
1474 static void
1475 dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1476 {
1477 }
1478
1479 static void
1480 dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus)
1481 {
1482 }
1483
1484
1485 static void
1486 dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB )
1487 {
1488     u8  bval, i, cnt;
1489     struct dc390_dcb*   ptr;
1490
1491     if( !(pDCB->TargetLUN) )
1492     {
1493         if( !pACB->scan_devices )
1494         {
1495             ptr = pACB->pLinkDCB;
1496             cnt = pACB->DCBCnt;
1497             bval = pDCB->TargetID;
1498             for(i=0; i<cnt; i++)
1499             {
1500                 if( ptr->TargetID == bval )
1501                 {
1502                     ptr->SyncPeriod = pDCB->SyncPeriod;
1503                     ptr->SyncOffset = pDCB->SyncOffset;
1504                     ptr->CtrlR3 = pDCB->CtrlR3;
1505                     ptr->CtrlR4 = pDCB->CtrlR4;
1506                     ptr->SyncMode = pDCB->SyncMode;
1507                 }
1508                 ptr = ptr->pNextDCB;
1509             }
1510         }
1511     }
1512     return;
1513 }
1514
1515
1516 static void
1517 dc390_Disconnect( struct dc390_acb* pACB )
1518 {
1519     struct dc390_dcb *pDCB;
1520     struct dc390_srb *pSRB, *psrb;
1521     u8  i, cnt;
1522
1523     DEBUG0(printk(KERN_INFO "DISC,"));
1524
1525     if (!pACB->Connected) printk(KERN_ERR "DC390: Disconnect not-connected bus?\n");
1526     pACB->Connected = 0;
1527     pDCB = pACB->pActiveDCB;
1528     if (!pDCB)
1529      {
1530         DEBUG0(printk(KERN_ERR "ACB:%p->ActiveDCB:%p IOPort:%04x IRQ:%02x !\n",\
1531                pACB, pDCB, pACB->IOPortBase, pACB->IRQLevel));
1532         mdelay(400);
1533         DC390_read8 (INT_Status);       /* Reset Pending INT */
1534         DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1535         return;
1536      }
1537     DC390_write8 (ScsiCmd, EN_SEL_RESEL);
1538     pSRB = pDCB->pActiveSRB;
1539     pACB->pActiveDCB = NULL;
1540     pSRB->ScsiPhase = SCSI_NOP0;
1541     if( pSRB->SRBState & SRB_UNEXPECT_RESEL )
1542         pSRB->SRBState = 0;
1543     else if( pSRB->SRBState & SRB_ABORT_SENT )
1544     {
1545         pDCB->TagMask = 0;
1546         pDCB->DCBFlag = 0;
1547         cnt = pDCB->GoingSRBCnt;
1548         pDCB->GoingSRBCnt = 0;
1549         pSRB = pDCB->pGoingSRB;
1550         for( i=0; i < cnt; i++)
1551         {
1552             psrb = pSRB->pNextSRB;
1553             dc390_Free_insert (pACB, pSRB);
1554             pSRB = psrb;
1555         }
1556         pDCB->pGoingSRB = NULL;
1557     }
1558     else
1559     {
1560         if( (pSRB->SRBState & (SRB_START_+SRB_MSGOUT)) ||
1561            !(pSRB->SRBState & (SRB_DISCONNECT+SRB_COMPLETED)) )
1562         {       /* Selection time out */
1563                 pSRB->AdaptStatus = H_SEL_TIMEOUT;
1564                 pSRB->TargetStatus = 0;
1565                 goto  disc1;
1566         }
1567         else if (!(pSRB->SRBState & SRB_DISCONNECT) && (pSRB->SRBState & SRB_COMPLETED))
1568         {
1569 disc1:
1570             dc390_freetag (pDCB, pSRB);
1571             pDCB->pActiveSRB = NULL;
1572             pSRB->SRBState = SRB_FREE;
1573             dc390_SRBdone( pACB, pDCB, pSRB);
1574         }
1575     }
1576     pACB->MsgLen = 0;
1577 }
1578
1579
1580 static void
1581 dc390_Reselect( struct dc390_acb* pACB )
1582 {
1583     struct dc390_dcb*   pDCB;
1584     struct dc390_srb*   pSRB;
1585     u8  id, lun;
1586
1587     DEBUG0(printk(KERN_INFO "RSEL,"));
1588     pACB->Connected = 1;
1589     pDCB = pACB->pActiveDCB;
1590     if( pDCB )
1591     {   /* Arbitration lost but Reselection won */
1592         DEBUG0(printk ("DC390: (ActiveDCB != 0: Arb. lost but resel. won)!\n"));
1593         pSRB = pDCB->pActiveSRB;
1594         if( !( pACB->scan_devices ) )
1595         {
1596             struct scsi_cmnd *pcmd = pSRB->pcmd;
1597             scsi_set_resid(pcmd, scsi_bufflen(pcmd));
1598             SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1599             dc390_Going_remove(pDCB, pSRB);
1600             dc390_Free_insert(pACB, pSRB);
1601             pcmd->scsi_done (pcmd);
1602             DEBUG0(printk(KERN_DEBUG"DC390: Return SRB %p to free\n", pSRB));
1603         }
1604     }
1605     /* Get ID */
1606     lun = DC390_read8 (ScsiFifo);
1607     DEBUG0(printk ("Dev %02x,", lun));
1608     if (!(lun & (1 << pACB->pScsiHost->this_id)))
1609       printk (KERN_ERR "DC390: Reselection must select host adapter: %02x!\n", lun);
1610     else
1611       lun ^= 1 << pACB->pScsiHost->this_id; /* Mask AdapterID */
1612     id = 0; while (lun >>= 1) id++;
1613     /* Get LUN */
1614     lun = DC390_read8 (ScsiFifo);
1615     if (!(lun & IDENTIFY_BASE)) printk (KERN_ERR "DC390: Resel: Expect identify message!\n");
1616     lun &= 7;
1617     DEBUG0(printk ("(%02i-%i),", id, lun));
1618     pDCB = dc390_findDCB (pACB, id, lun);
1619     if (!pDCB)
1620     {
1621         printk (KERN_ERR "DC390: Reselect from non existing device (%02i-%i)\n",
1622                     id, lun);
1623         return;
1624     }
1625     pACB->pActiveDCB = pDCB;
1626     /* TagQ: We expect a message soon, so never mind the exact SRB */
1627     if( pDCB->SyncMode & EN_TAG_QUEUEING )
1628     {
1629         pSRB = pACB->pTmpSRB;
1630         pDCB->pActiveSRB = pSRB;
1631     }
1632     else
1633     {
1634         pSRB = pDCB->pActiveSRB;
1635         if( !pSRB || !(pSRB->SRBState & SRB_DISCONNECT) )
1636         {
1637             pSRB= pACB->pTmpSRB;
1638             pSRB->SRBState = SRB_UNEXPECT_RESEL;
1639             printk (KERN_ERR "DC390: Reselect without outstanding cmnd (%02i-%i)\n",
1640                     id, lun);
1641             pDCB->pActiveSRB = pSRB;
1642             dc390_EnableMsgOut_Abort ( pACB, pSRB );
1643         }
1644         else
1645         {
1646             if( pDCB->DCBFlag & ABORT_DEV_ )
1647             {
1648                 pSRB->SRBState = SRB_ABORT_SENT;
1649                 printk (KERN_INFO "DC390: Reselect: Abort (%02i-%i)\n",
1650                         id, lun);
1651                 dc390_EnableMsgOut_Abort( pACB, pSRB );
1652             }
1653             else
1654                 pSRB->SRBState = SRB_DATA_XFER;
1655         }
1656     }
1657
1658     DEBUG1(printk (KERN_DEBUG "Resel SRB(%p): TagNum (%02x)\n", pSRB, pSRB->TagNumber));
1659     pSRB->ScsiPhase = SCSI_NOP0;
1660     DC390_write8 (Scsi_Dest_ID, pDCB->TargetID);
1661     DC390_write8 (Sync_Period, pDCB->SyncPeriod);
1662     DC390_write8 (Sync_Offset, pDCB->SyncOffset);
1663     DC390_write8 (CtrlReg1, pDCB->CtrlR1);
1664     DC390_write8 (CtrlReg3, pDCB->CtrlR3);
1665     DC390_write8 (CtrlReg4, pDCB->CtrlR4);      /* ; Glitch eater */
1666     DC390_write8 (ScsiCmd, MSG_ACCEPTED_CMD);   /* ;to release the /ACK signal */
1667 }
1668
1669 static int __inline__
1670 dc390_RequestSense(struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1671 {
1672         struct scsi_cmnd *pcmd;
1673
1674         pcmd = pSRB->pcmd;
1675
1676         REMOVABLEDEBUG(printk(KERN_INFO "DC390: RequestSense(Cmd %02x, Id %02x, LUN %02x)\n",\
1677                               pcmd->cmnd[0], pDCB->TargetID, pDCB->TargetLUN));
1678
1679         pSRB->SRBFlag |= AUTO_REQSENSE;
1680         pSRB->SavedTotXLen = pSRB->TotalXferredLen;
1681         pSRB->AdaptStatus = 0;
1682         pSRB->TargetStatus = 0; /* CHECK_CONDITION<<1; */
1683
1684         /* We are called from SRBdone, original PCI mapping has been removed
1685          * already, new one is set up from StartSCSI */
1686         pSRB->SGIndex = 0;
1687
1688         pSRB->TotalXferredLen = 0;
1689         pSRB->SGToBeXferLen = 0;
1690         return dc390_StartSCSI(pACB, pDCB, pSRB);
1691 }
1692
1693
1694 static void
1695 dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
1696 {
1697     u8 status;
1698     struct scsi_cmnd *pcmd;
1699
1700     pcmd = pSRB->pcmd;
1701     /* KG: Moved pci_unmap here */
1702     dc390_pci_unmap(pSRB);
1703
1704     status = pSRB->TargetStatus;
1705
1706     DEBUG0(printk (" SRBdone (%02x,%08x), SRB %p\n", status, pcmd->result, pSRB));
1707     if(pSRB->SRBFlag & AUTO_REQSENSE)
1708     {   /* Last command was a Request Sense */
1709         pSRB->SRBFlag &= ~AUTO_REQSENSE;
1710         pSRB->AdaptStatus = 0;
1711         pSRB->TargetStatus = SAM_STAT_CHECK_CONDITION;
1712
1713         //pcmd->result = MK_RES(DRIVER_SENSE,DID_OK,0,status);
1714         if (status == SAM_STAT_CHECK_CONDITION)
1715             pcmd->result = MK_RES_LNX(0, DID_BAD_TARGET, 0, /*CHECK_CONDITION*/0);
1716         else /* Retry */
1717         {
1718             if( pSRB->pcmd->cmnd[0] == TEST_UNIT_READY /* || pSRB->pcmd->cmnd[0] == START_STOP */)
1719             {
1720                 /* Don't retry on TEST_UNIT_READY */
1721                 pcmd->result = MK_RES_LNX(DRIVER_SENSE, DID_OK, 0, SAM_STAT_CHECK_CONDITION);
1722                 REMOVABLEDEBUG(printk(KERN_INFO "Cmd=%02x, Result=%08x, XferL=%08x\n",pSRB->pcmd->cmnd[0],\
1723                        (u32) pcmd->result, (u32) pSRB->TotalXferredLen));
1724             } else {
1725                 SET_RES_DRV(pcmd->result, DRIVER_SENSE);
1726                 //pSRB->ScsiCmdLen       = (u8) (pSRB->Segment1[0] >> 8);
1727                 DEBUG0 (printk ("DC390: RETRY (%02x), target %02i-%02i\n", pcmd->cmnd[0], pcmd->device->id, (u8)pcmd->device->lun));
1728                 pSRB->TotalXferredLen = 0;
1729                 SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1730             }
1731         }
1732         goto cmd_done;
1733     }
1734     if( status )
1735     {
1736         if (status == SAM_STAT_CHECK_CONDITION)
1737         {
1738             if (dc390_RequestSense(pACB, pDCB, pSRB)) {
1739                 SET_RES_DID(pcmd->result, DID_ERROR);
1740                 goto cmd_done;
1741             }
1742             return;
1743         }
1744         else if (status == SAM_STAT_TASK_SET_FULL)
1745         {
1746             scsi_track_queue_full(pcmd->device, pDCB->GoingSRBCnt - 1);
1747             DEBUG0 (printk ("DC390: RETRY (%02x), target %02i-%02i\n", pcmd->cmnd[0], pcmd->device->id, (u8)pcmd->device->lun));
1748             pSRB->TotalXferredLen = 0;
1749             SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1750         }
1751         else if (status == SAM_STAT_BUSY &&
1752                  (pcmd->cmnd[0] == TEST_UNIT_READY || pcmd->cmnd[0] == INQUIRY) &&
1753                  pACB->scan_devices)
1754         {
1755             pSRB->AdaptStatus = 0;
1756             pSRB->TargetStatus = status;
1757             pcmd->result = MK_RES(0,0,pSRB->EndMessage,/*status*/0);
1758         }
1759         else
1760         {   /* Another error */
1761             pSRB->TotalXferredLen = 0;
1762             SET_RES_DID(pcmd->result, DID_SOFT_ERROR);
1763             goto cmd_done;
1764         }
1765     }
1766     else
1767     {   /*  Target status == 0 */
1768         status = pSRB->AdaptStatus;
1769         if (status == H_OVER_UNDER_RUN)
1770         {
1771             pSRB->TargetStatus = 0;
1772             SET_RES_DID(pcmd->result,DID_OK);
1773             SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1774         }
1775         else if (status == H_SEL_TIMEOUT)
1776         {
1777             pcmd->result = MK_RES(0, DID_NO_CONNECT, 0, 0);
1778             /* Devices are removed below ... */
1779         }
1780         else if( pSRB->SRBStatus & PARITY_ERROR)
1781         {
1782             //pcmd->result = MK_RES(0,DID_PARITY,pSRB->EndMessage,0);
1783             SET_RES_DID(pcmd->result,DID_PARITY);
1784             SET_RES_MSG(pcmd->result,pSRB->EndMessage);
1785         }
1786         else                   /* No error */
1787         {
1788             pSRB->AdaptStatus = 0;
1789             pSRB->TargetStatus = 0;
1790             SET_RES_DID(pcmd->result,DID_OK);
1791         }
1792     }
1793
1794 cmd_done:
1795     scsi_set_resid(pcmd, scsi_bufflen(pcmd) - pSRB->TotalXferredLen);
1796
1797     dc390_Going_remove (pDCB, pSRB);
1798     /* Add to free list */
1799     dc390_Free_insert (pACB, pSRB);
1800
1801     DEBUG0(printk (KERN_DEBUG "DC390: SRBdone: done\n"));
1802     pcmd->scsi_done (pcmd);
1803
1804     return;
1805 }
1806
1807
1808 /* Remove all SRBs from Going list and inform midlevel */
1809 static void
1810 dc390_DoingSRB_Done(struct dc390_acb* pACB, struct scsi_cmnd *cmd)
1811 {
1812     struct dc390_dcb *pDCB, *pdcb;
1813     struct dc390_srb *psrb, *psrb2;
1814     int i;
1815     struct scsi_cmnd *pcmd;
1816
1817     pDCB = pACB->pLinkDCB;
1818     pdcb = pDCB;
1819     if (! pdcb) return;
1820     do
1821     {
1822         psrb = pdcb->pGoingSRB;
1823         for (i = 0; i < pdcb->GoingSRBCnt; i++)
1824         {
1825             psrb2 = psrb->pNextSRB;
1826             pcmd = psrb->pcmd;
1827             dc390_Free_insert (pACB, psrb);
1828             psrb  = psrb2;
1829         }
1830         pdcb->GoingSRBCnt = 0;
1831         pdcb->pGoingSRB = NULL;
1832         pdcb->TagMask = 0;
1833         pdcb = pdcb->pNextDCB;
1834     } while( pdcb != pDCB );
1835 }
1836
1837
1838 static void
1839 dc390_ResetSCSIBus( struct dc390_acb* pACB )
1840 {
1841     //DC390_write8 (ScsiCmd, RST_DEVICE_CMD);
1842     //udelay (250);
1843     //DC390_write8 (ScsiCmd, NOP_CMD);
1844
1845     DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1846     DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1847     DC390_write8 (ScsiCmd, RST_SCSI_BUS_CMD);
1848     pACB->Connected = 0;
1849
1850     return;
1851 }
1852
1853 static void
1854 dc390_ScsiRstDetect( struct dc390_acb* pACB )
1855 {
1856     printk ("DC390: Rst_Detect: laststat = %08x\n", dc390_laststatus);
1857     //DEBUG0(printk(KERN_INFO "RST_DETECT,"));
1858
1859     DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1860     /* Unlock before ? */
1861     /* delay half a second */
1862     udelay (1000);
1863     DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1864     pACB->last_reset = jiffies + 5*HZ/2
1865                     + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1866     pACB->Connected = 0;
1867
1868     if( pACB->ACBFlag & RESET_DEV )
1869         pACB->ACBFlag |= RESET_DONE;
1870     else
1871     {   /* Reset was issued by sb else */
1872         pACB->ACBFlag |= RESET_DETECT;
1873
1874         dc390_ResetDevParam( pACB );
1875         dc390_DoingSRB_Done( pACB, NULL);
1876         //dc390_RecoverSRB( pACB );
1877         pACB->pActiveDCB = NULL;
1878         pACB->ACBFlag = 0;
1879     }
1880     return;
1881 }
1882
1883 static int DC390_queuecommand_lck(struct scsi_cmnd *cmd,
1884                 void (*done)(struct scsi_cmnd *))
1885 {
1886         struct scsi_device *sdev = cmd->device;
1887         struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
1888         struct dc390_dcb *dcb = sdev->hostdata;
1889         struct dc390_srb *srb;
1890
1891         if (sdev->queue_depth <= dcb->GoingSRBCnt)
1892                 goto device_busy;
1893         if (acb->pActiveDCB)
1894                 goto host_busy;
1895         if (acb->ACBFlag & (RESET_DETECT|RESET_DONE|RESET_DEV))
1896                 goto host_busy;
1897
1898         srb = acb->pFreeSRB;
1899         if (unlikely(srb == NULL))
1900                 goto host_busy;
1901
1902         cmd->scsi_done = done;
1903         cmd->result = 0;
1904         acb->Cmds++;
1905
1906         acb->pFreeSRB = srb->pNextSRB;
1907         srb->pNextSRB = NULL;
1908
1909         srb->pSRBDCB = dcb;
1910         srb->pcmd = cmd;
1911         cmd->host_scribble = (char *)srb;
1912
1913         srb->SGIndex = 0;
1914         srb->AdaptStatus = 0;
1915         srb->TargetStatus = 0;
1916         srb->MsgCnt = 0;
1917
1918         srb->SRBStatus = 0;
1919         srb->SRBFlag = 0;
1920         srb->SRBState = 0;
1921         srb->TotalXferredLen = 0;
1922         srb->SGBusAddr = 0;
1923         srb->SGToBeXferLen = 0;
1924         srb->ScsiPhase = 0;
1925         srb->EndMessage = 0;
1926         srb->TagNumber = SCSI_NO_TAG;
1927
1928         if (dc390_StartSCSI(acb, dcb, srb)) {
1929                 dc390_Free_insert(acb, srb);
1930                 goto host_busy;
1931         }
1932
1933         dc390_Going_append(dcb, srb);
1934
1935         return 0;
1936
1937  host_busy:
1938         return SCSI_MLQUEUE_HOST_BUSY;
1939
1940  device_busy:
1941         return SCSI_MLQUEUE_DEVICE_BUSY;
1942 }
1943
1944 static DEF_SCSI_QCMD(DC390_queuecommand)
1945
1946 static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1947 {
1948     struct pci_dev *pdev;
1949     u16 pstat;
1950
1951     if (!pDCB) pDCB = pACB->pActiveDCB;
1952     if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB;
1953
1954     if (pSRB)
1955     {
1956         printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
1957                 pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState,
1958                 pSRB->ScsiPhase);
1959         printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus);
1960     }
1961     printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus);
1962     printk ("DC390: Register dump: SCSI block:\n");
1963     printk ("DC390: XferCnt  Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
1964     printk ("DC390:  %06x   %02x   %02x   %02x",
1965             DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16),
1966             DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State));
1967     printk ("   %02x   %02x   %02x   %02x   %02x   %02x\n",
1968             DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1),
1969             DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4));
1970     DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
1971     if (DC390_read8(Current_Fifo) & 0x1f)
1972       {
1973         printk ("DC390: FIFO:");
1974         while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo));
1975         printk ("\n");
1976       }
1977     printk ("DC390: Register dump: DMA engine:\n");
1978     printk ("DC390: Cmd   STrCnt    SBusA    WrkBC    WrkAC Stat SBusCtrl\n");
1979     printk ("DC390:  %02x %08x %08x %08x %08x   %02x %08x\n",
1980             DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr),
1981             DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr),
1982             DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl));
1983     DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
1984
1985     pdev = pACB->pdev;
1986     pci_read_config_word(pdev, PCI_STATUS, &pstat);
1987     printk ("DC390: Register dump: PCI Status: %04x\n", pstat);
1988     printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
1989 }
1990
1991
1992 static int DC390_abort(struct scsi_cmnd *cmd)
1993 {
1994         struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata;
1995         struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata;
1996
1997         scmd_printk(KERN_WARNING, cmd, "DC390: Abort command\n");
1998
1999         /* abort() is too stupid for already sent commands at the moment.
2000          * If it's called we are in trouble anyway, so let's dump some info
2001          * into the syslog at least. (KG, 98/08/20,99/06/20) */
2002         dc390_dumpinfo(pACB, pDCB, NULL);
2003
2004         pDCB->DCBFlag |= ABORT_DEV_;
2005         printk(KERN_INFO "DC390: Aborted.\n");
2006
2007         return FAILED;
2008 }
2009
2010
2011 static void dc390_ResetDevParam( struct dc390_acb* pACB )
2012 {
2013     struct dc390_dcb *pDCB, *pdcb;
2014
2015     pDCB = pACB->pLinkDCB;
2016     if (! pDCB) return;
2017     pdcb = pDCB;
2018     do
2019     {
2020         pDCB->SyncMode &= ~SYNC_NEGO_DONE;
2021         pDCB->SyncPeriod = 0;
2022         pDCB->SyncOffset = 0;
2023         pDCB->TagMask = 0;
2024         pDCB->CtrlR3 = FAST_CLK;
2025         pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK;
2026         pDCB->CtrlR4 |= pACB->glitch_cfg;
2027         pDCB = pDCB->pNextDCB;
2028     }
2029     while( pdcb != pDCB );
2030     pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT);
2031
2032 }
2033
2034 static int DC390_bus_reset (struct scsi_cmnd *cmd)
2035 {
2036         struct dc390_acb*    pACB = (struct dc390_acb*) cmd->device->host->hostdata;
2037         u8   bval;
2038
2039         spin_lock_irq(cmd->device->host->host_lock);
2040
2041         bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2042         DC390_write8(CtrlReg1, bval);   /* disable IRQ on bus reset */
2043
2044         pACB->ACBFlag |= RESET_DEV;
2045         dc390_ResetSCSIBus(pACB);
2046
2047         dc390_ResetDevParam(pACB);
2048         mdelay(1);
2049         pACB->last_reset = jiffies + 3*HZ/2
2050                 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2051
2052         DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2053         DC390_read8(INT_Status);                /* Reset Pending INT */
2054
2055         dc390_DoingSRB_Done(pACB, cmd);
2056
2057         pACB->pActiveDCB = NULL;
2058         pACB->ACBFlag = 0;
2059
2060         bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
2061         DC390_write8(CtrlReg1, bval);   /* re-enable interrupt */
2062
2063         spin_unlock_irq(cmd->device->host->host_lock);
2064
2065         return SUCCESS;
2066 }
2067
2068 /**
2069  * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
2070  * scsi device that we need to deal with.
2071  *
2072  * @scsi_device: The new scsi device that we need to handle.
2073  */
2074 static int dc390_slave_alloc(struct scsi_device *scsi_device)
2075 {
2076         struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2077         struct dc390_dcb *pDCB, *pDCB2 = NULL;
2078         uint id = scsi_device->id;
2079         uint lun = scsi_device->lun;
2080
2081         pDCB = kzalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
2082         if (!pDCB)
2083                 return -ENOMEM;
2084
2085         if (!pACB->DCBCnt++) {
2086                 pACB->pLinkDCB = pDCB;
2087                 pACB->pDCBRunRobin = pDCB;
2088         } else {
2089                 pACB->pLastDCB->pNextDCB = pDCB;
2090         }
2091
2092         pDCB->pNextDCB = pACB->pLinkDCB;
2093         pACB->pLastDCB = pDCB;
2094
2095         pDCB->pDCBACB = pACB;
2096         pDCB->TargetID = id;
2097         pDCB->TargetLUN = lun;
2098
2099         /*
2100          * Some values are for all LUNs: Copy them
2101          * In a clean way: We would have an own structure for a SCSI-ID
2102          */
2103         if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
2104                 pDCB->DevMode = pDCB2->DevMode;
2105                 pDCB->SyncMode = pDCB2->SyncMode & SYNC_NEGO_DONE;
2106                 pDCB->SyncPeriod = pDCB2->SyncPeriod;
2107                 pDCB->SyncOffset = pDCB2->SyncOffset;
2108                 pDCB->NegoPeriod = pDCB2->NegoPeriod;
2109
2110                 pDCB->CtrlR3 = pDCB2->CtrlR3;
2111                 pDCB->CtrlR4 = pDCB2->CtrlR4;
2112         } else {
2113                 u8 index = pACB->AdapterIndex;
2114                 PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
2115
2116                 pDCB->DevMode = prom->EE_MODE1;
2117                 pDCB->NegoPeriod =
2118                         (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
2119                 pDCB->CtrlR3 = FAST_CLK;
2120                 pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
2121                 if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
2122                         pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
2123         }
2124
2125         if (pDCB->DevMode & SYNC_NEGO_)
2126                 pDCB->SyncMode |= SYNC_ENABLE;
2127         else {
2128                 pDCB->SyncMode = 0;
2129                 pDCB->SyncOffset &= ~0x0f;
2130         }
2131
2132         pDCB->CtrlR1 = pACB->pScsiHost->this_id;
2133         if (pDCB->DevMode & PARITY_CHK_)
2134                 pDCB->CtrlR1 |= PARITY_ERR_REPO;
2135
2136         pACB->scan_devices = 1;
2137         scsi_device->hostdata = pDCB;
2138         return 0;
2139 }
2140
2141 /**
2142  * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
2143  * device that is going away.
2144  *
2145  * @scsi_device: The scsi device that we need to remove.
2146  */
2147 static void dc390_slave_destroy(struct scsi_device *scsi_device)
2148 {
2149         struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
2150         struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata;
2151         struct dc390_dcb* pPrevDCB = pACB->pLinkDCB;
2152
2153         pACB->scan_devices = 0;
2154
2155         BUG_ON(pDCB->GoingSRBCnt > 1);
2156
2157         if (pDCB == pACB->pLinkDCB) {
2158                 if (pACB->pLastDCB == pDCB) {
2159                         pDCB->pNextDCB = NULL;
2160                         pACB->pLastDCB = NULL;
2161                 }
2162                 pACB->pLinkDCB = pDCB->pNextDCB;
2163         } else {
2164                 while (pPrevDCB->pNextDCB != pDCB)
2165                         pPrevDCB = pPrevDCB->pNextDCB;
2166                 pPrevDCB->pNextDCB = pDCB->pNextDCB;
2167                 if (pDCB == pACB->pLastDCB)
2168                         pACB->pLastDCB = pPrevDCB;
2169         }
2170
2171         if (pDCB == pACB->pActiveDCB)
2172                 pACB->pActiveDCB = NULL;
2173         if (pDCB == pACB->pLinkDCB)
2174                 pACB->pLinkDCB = pDCB->pNextDCB;
2175         if (pDCB == pACB->pDCBRunRobin)
2176                 pACB->pDCBRunRobin = pDCB->pNextDCB;
2177         kfree(pDCB);
2178
2179         pACB->DCBCnt--;
2180 }
2181
2182 static int dc390_slave_configure(struct scsi_device *sdev)
2183 {
2184         struct dc390_acb *acb = (struct dc390_acb *)sdev->host->hostdata;
2185         struct dc390_dcb *dcb = (struct dc390_dcb *)sdev->hostdata;
2186
2187         acb->scan_devices = 0;
2188
2189         /*
2190          * XXX: Note that while this driver used to called scsi_activate_tcq,
2191          * it never actually set a tag type, so emulate the old behavior.
2192          */
2193         scsi_set_tag_type(sdev, 0);
2194
2195         if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
2196                 dcb->SyncMode |= EN_TAG_QUEUEING;
2197                 scsi_adjust_queue_depth(sdev, acb->TagMaxNum);
2198         }
2199
2200         return 0;
2201 }
2202
2203 static struct scsi_host_template driver_template = {
2204         .module                 = THIS_MODULE,
2205         .proc_name              = "tmscsim",
2206         .name                   = DC390_BANNER " V" DC390_VERSION,
2207         .slave_alloc            = dc390_slave_alloc,
2208         .slave_configure        = dc390_slave_configure,
2209         .slave_destroy          = dc390_slave_destroy,
2210         .queuecommand           = DC390_queuecommand,
2211         .eh_abort_handler       = DC390_abort,
2212         .eh_bus_reset_handler   = DC390_bus_reset,
2213         .can_queue              = 1,
2214         .this_id                = 7,
2215         .sg_tablesize           = SG_ALL,
2216         .cmd_per_lun            = 1,
2217         .use_clustering         = ENABLE_CLUSTERING,
2218         .max_sectors            = 0x4000, /* 8MiB = 16 * 1024 * 512 */
2219         .use_blk_tags           = 1,
2220 };
2221
2222 /***********************************************************************
2223  * Functions for access to DC390 EEPROM
2224  * and some to emulate it
2225  *
2226  **********************************************************************/
2227
2228 static void dc390_eeprom_prepare_read(struct pci_dev *pdev, u8 cmd)
2229 {
2230         u8 carryFlag = 1, j = 0x80, bval;
2231         int i;
2232
2233         for (i = 0; i < 9; i++) {
2234                 if (carryFlag) {
2235                         pci_write_config_byte(pdev, 0x80, 0x40);
2236                         bval = 0xc0;
2237                 } else
2238                         bval = 0x80;
2239
2240                 udelay(160);
2241                 pci_write_config_byte(pdev, 0x80, bval);
2242                 udelay(160);
2243                 pci_write_config_byte(pdev, 0x80, 0);
2244                 udelay(160);
2245
2246                 carryFlag = (cmd & j) ? 1 : 0;
2247                 j >>= 1;
2248         }
2249 }
2250
2251 static u16 dc390_eeprom_get_data(struct pci_dev *pdev)
2252 {
2253         int i;
2254         u16 wval = 0;
2255         u8 bval;
2256
2257         for (i = 0; i < 16; i++) {
2258                 wval <<= 1;
2259
2260                 pci_write_config_byte(pdev, 0x80, 0x80);
2261                 udelay(160);
2262                 pci_write_config_byte(pdev, 0x80, 0x40);
2263                 udelay(160);
2264                 pci_read_config_byte(pdev, 0x00, &bval);
2265
2266                 if (bval == 0x22)
2267                         wval |= 1;
2268         }
2269
2270         return wval;
2271 }
2272
2273 static void dc390_read_eeprom(struct pci_dev *pdev, u16 *ptr)
2274 {
2275         u8 cmd = EEPROM_READ, i;
2276
2277         for (i = 0; i < 0x40; i++) {
2278                 pci_write_config_byte(pdev, 0xc0, 0);
2279                 udelay(160);
2280
2281                 dc390_eeprom_prepare_read(pdev, cmd++);
2282                 *ptr++ = dc390_eeprom_get_data(pdev);
2283
2284                 pci_write_config_byte(pdev, 0x80, 0);
2285                 pci_write_config_byte(pdev, 0x80, 0);
2286                 udelay(160);
2287         }
2288 }
2289
2290 /* Override EEprom values with explicitly set values */
2291 static void dc390_eeprom_override(u8 index)
2292 {
2293         u8 *ptr = (u8 *) dc390_eepromBuf[index], id;
2294
2295         /* Adapter Settings */
2296         if (tmscsim[0] != -2)
2297                 ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
2298         if (tmscsim[3] != -2)
2299                 ptr[EE_MODE2] = (u8)tmscsim[3];
2300         if (tmscsim[5] != -2)
2301                 ptr[EE_DELAY] = tmscsim[5];             /* Reset delay */
2302         if (tmscsim[4] != -2)
2303                 ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4];   /* Tagged Cmds */
2304
2305         /* Device Settings */
2306         for (id = 0; id < MAX_SCSI_ID; id++) {
2307                 if (tmscsim[2] != -2)
2308                         ptr[id << 2] = (u8)tmscsim[2];          /* EE_MODE1 */
2309                 if (tmscsim[1] != -2)
2310                         ptr[(id << 2) + 1] = (u8)tmscsim[1];    /* EE_Speed */
2311         }
2312 }
2313
2314 static int tmscsim_def[] = {
2315         7,
2316         0 /* 10MHz */,
2317         PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_ | SYNC_NEGO_ | TAG_QUEUEING_,
2318         MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION | LUN_CHECK,
2319         3 /* 16 Tags per LUN */,
2320         1 /* s delay after Reset */,
2321 };
2322
2323 /* Copy defaults over set values where missing */
2324 static void dc390_fill_with_defaults (void)
2325 {
2326         int i;
2327
2328         for (i = 0; i < 6; i++) {
2329                 if (tmscsim[i] < 0 || tmscsim[i] > 255)
2330                         tmscsim[i] = tmscsim_def[i];
2331         }
2332
2333         /* Sanity checks */
2334         if (tmscsim[0] > 7)
2335                 tmscsim[0] = 7;
2336         if (tmscsim[1] > 7)
2337                 tmscsim[1] = 4;
2338         if (tmscsim[4] > 5)
2339                 tmscsim[4] = 4;
2340         if (tmscsim[5] > 180)
2341                 tmscsim[5] = 180;
2342 }
2343
2344 static void dc390_check_eeprom(struct pci_dev *pdev, u8 index)
2345 {
2346         u8 interpd[] = {1, 3, 5, 10, 16, 30, 60, 120};
2347         u8 EEbuf[128];
2348         u16 *ptr = (u16 *)EEbuf, wval = 0;
2349         int i;
2350
2351         dc390_read_eeprom(pdev, ptr);
2352         memcpy(dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
2353         memcpy(&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
2354                &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
2355
2356         dc390_eepromBuf[index][EE_DELAY] = interpd[dc390_eepromBuf[index][EE_DELAY]];
2357
2358         for (i = 0; i < 0x40; i++, ptr++)
2359                 wval += *ptr;
2360
2361         /* no Tekram EEprom found */
2362         if (wval != 0x1234) {
2363                 int speed;
2364
2365                 printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
2366
2367                 /*
2368                  * XXX(hch): bogus, because we might have tekram and
2369                  *           non-tekram hbas in a single machine.
2370                  */
2371                 dc390_fill_with_defaults();
2372
2373                 speed = dc390_clock_speed[tmscsim[1]];
2374                 printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz), "
2375                        "DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
2376                        tmscsim[0], tmscsim[1], speed / 10, speed % 10,
2377                        (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
2378         }
2379 }
2380
2381 static void dc390_init_hw(struct dc390_acb *pACB, u8 index)
2382 {
2383         struct Scsi_Host *shost = pACB->pScsiHost;
2384         u8 dstate;
2385
2386         /* Disable SCSI bus reset interrupt */
2387         DC390_write8(CtrlReg1, DIS_INT_ON_SCSI_RST | shost->this_id);
2388
2389         if (pACB->Gmode2 & RST_SCSI_BUS) {
2390                 dc390_ResetSCSIBus(pACB);
2391                 udelay(1000);
2392                 pACB->last_reset = jiffies + HZ/2 +
2393                         HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
2394         }
2395
2396         pACB->ACBFlag = 0;
2397
2398         /* Reset Pending INT */
2399         DC390_read8(INT_Status);
2400
2401         /* 250ms selection timeout */
2402         DC390_write8(Scsi_TimeOut, SEL_TIMEOUT);
2403
2404         /* Conversion factor = 0 , 40MHz clock */
2405         DC390_write8(Clk_Factor, CLK_FREQ_40MHZ);
2406
2407         /* NOP cmd - clear command register */
2408         DC390_write8(ScsiCmd, NOP_CMD);
2409
2410         /* Enable Feature and SCSI-2 */
2411         DC390_write8(CtrlReg2, EN_FEATURE+EN_SCSI2_CMD);
2412
2413         /* Fast clock */
2414         DC390_write8(CtrlReg3, FAST_CLK);
2415
2416         /* Negation */
2417         DC390_write8(CtrlReg4, pACB->glitch_cfg | /* glitch eater */
2418                 (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ?
2419                  NEGATE_REQACKDATA : 0);
2420
2421         /* Clear Transfer Count High: ID */
2422         DC390_write8(CtcReg_High, 0);
2423         DC390_write8(DMA_Cmd, DMA_IDLE_CMD);
2424         DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
2425         DC390_write32(DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
2426
2427         dstate = DC390_read8(DMA_Status);
2428         DC390_write8(DMA_Status, dstate);
2429 }
2430
2431 static int dc390_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2432 {
2433         struct dc390_acb *pACB;
2434         struct Scsi_Host *shost;
2435         unsigned long io_port;
2436         int error = -ENODEV, i;
2437
2438         if (pci_enable_device(pdev))
2439                 goto out;
2440
2441         pci_set_master(pdev);
2442
2443         error = -ENOMEM;
2444         if (disable_clustering)
2445                 driver_template.use_clustering = DISABLE_CLUSTERING;
2446         shost = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
2447         if (!shost)
2448                 goto out_disable_device;
2449
2450         pACB = (struct dc390_acb *)shost->hostdata;
2451         memset(pACB, 0, sizeof(struct dc390_acb));
2452
2453         dc390_check_eeprom(pdev, dc390_adapterCnt);
2454         dc390_eeprom_override(dc390_adapterCnt);
2455
2456         io_port = pci_resource_start(pdev, 0);
2457
2458         shost->this_id = dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID];
2459         shost->io_port = io_port;
2460         shost->n_io_port = 0x80;
2461         shost->irq = pdev->irq;
2462         shost->base = io_port;
2463         shost->unique_id = io_port;
2464
2465         pACB->last_reset = jiffies;
2466         pACB->pScsiHost = shost;
2467         pACB->IOPortBase = (u16) io_port;
2468         pACB->IRQLevel = pdev->irq;
2469
2470         shost->max_id = 8;
2471
2472         if (shost->max_id - 1 ==
2473             dc390_eepromBuf[dc390_adapterCnt][EE_ADAPT_SCSI_ID])
2474                 shost->max_id--;
2475
2476         if (dc390_eepromBuf[dc390_adapterCnt][EE_MODE2] & LUN_CHECK)
2477                 shost->max_lun = 8;
2478         else
2479                 shost->max_lun = 1;
2480
2481         pACB->pFreeSRB = pACB->SRB_array;
2482         pACB->SRBCount = MAX_SRB_CNT;
2483         pACB->AdapterIndex = dc390_adapterCnt;
2484         pACB->TagMaxNum =
2485                 2 << dc390_eepromBuf[dc390_adapterCnt][EE_TAG_CMD_NUM];
2486         pACB->Gmode2 = dc390_eepromBuf[dc390_adapterCnt][EE_MODE2];
2487
2488         for (i = 0; i < pACB->SRBCount-1; i++)
2489                 pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
2490         pACB->SRB_array[pACB->SRBCount-1].pNextSRB = NULL;
2491         pACB->pTmpSRB = &pACB->TmpSRB;
2492
2493         pACB->sel_timeout = SEL_TIMEOUT;
2494         pACB->glitch_cfg = EATER_25NS;
2495         pACB->pdev = pdev;
2496
2497         if (!request_region(io_port, shost->n_io_port, "tmscsim")) {
2498                 printk(KERN_ERR "DC390: register IO ports error!\n");
2499                 goto out_host_put;
2500         }
2501
2502         /* Reset Pending INT */
2503         DC390_read8_(INT_Status, io_port);
2504
2505         if (request_irq(pdev->irq, do_DC390_Interrupt, IRQF_SHARED,
2506                                 "tmscsim", pACB)) {
2507                 printk(KERN_ERR "DC390: register IRQ error!\n");
2508                 goto out_release_region;
2509         }
2510
2511         dc390_init_hw(pACB, dc390_adapterCnt);
2512
2513         dc390_adapterCnt++;
2514
2515         pci_set_drvdata(pdev, shost);
2516
2517         error = scsi_add_host(shost, &pdev->dev);
2518         if (error)
2519                 goto out_free_irq;
2520         scsi_scan_host(shost);
2521         return 0;
2522
2523  out_free_irq:
2524         free_irq(pdev->irq, pACB);
2525  out_release_region:
2526         release_region(io_port, shost->n_io_port);
2527  out_host_put:
2528         scsi_host_put(shost);
2529  out_disable_device:
2530         pci_disable_device(pdev);
2531  out:
2532         return error;
2533 }
2534
2535 /**
2536  * dc390_remove_one - Called to remove a single instance of the adapter.
2537  *
2538  * @dev: The PCI device to remove.
2539  */
2540 static void dc390_remove_one(struct pci_dev *dev)
2541 {
2542         struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
2543         unsigned long iflags;
2544         struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata;
2545         u8 bval;
2546
2547         scsi_remove_host(scsi_host);
2548
2549         spin_lock_irqsave(scsi_host->host_lock, iflags);
2550         pACB->ACBFlag = RESET_DEV;
2551         bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
2552         DC390_write8 (CtrlReg1, bval);  /* disable interrupt */
2553         if (pACB->Gmode2 & RST_SCSI_BUS)
2554                 dc390_ResetSCSIBus(pACB);
2555         spin_unlock_irqrestore(scsi_host->host_lock, iflags);
2556
2557         free_irq(scsi_host->irq, pACB);
2558         release_region(scsi_host->io_port, scsi_host->n_io_port);
2559
2560         pci_disable_device(dev);
2561         scsi_host_put(scsi_host);
2562 }
2563
2564 static struct pci_device_id tmscsim_pci_tbl[] = {
2565         { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD53C974,
2566                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
2567         { }
2568 };
2569 MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
2570
2571 static struct pci_driver dc390_driver = {
2572         .name           = "tmscsim",
2573         .id_table       = tmscsim_pci_tbl,
2574         .probe          = dc390_probe_one,
2575         .remove         = dc390_remove_one,
2576 };
2577
2578 static int __init dc390_module_init(void)
2579 {
2580         if (!disable_clustering) {
2581                 printk(KERN_INFO "DC390: clustering now enabled by default. If you get problems load\n");
2582                 printk(KERN_INFO "       with \"disable_clustering=1\" and report to maintainers\n");
2583         }
2584
2585         if (tmscsim[0] == -1 || tmscsim[0] > 15) {
2586                 tmscsim[0] = 7;
2587                 tmscsim[1] = 4;
2588                 tmscsim[2] = PARITY_CHK_ | TAG_QUEUEING_;
2589                 tmscsim[3] = MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION;
2590                 tmscsim[4] = 2;
2591                 tmscsim[5] = 10;
2592                 printk (KERN_INFO "DC390: Using safe settings.\n");
2593         }
2594
2595         return pci_register_driver(&dc390_driver);
2596 }
2597
2598 static void __exit dc390_module_exit(void)
2599 {
2600         pci_unregister_driver(&dc390_driver);
2601 }
2602
2603 module_init(dc390_module_init);
2604 module_exit(dc390_module_exit);
2605
2606 #ifndef MODULE
2607 static int __init dc390_setup (char *str)
2608 {
2609         int ints[8],i, im;
2610
2611         get_options(str, ARRAY_SIZE(ints), ints);
2612         im = ints[0];
2613
2614         if (im > 6) {
2615                 printk (KERN_NOTICE "DC390: ignore extra params!\n");
2616                 im = 6;
2617         }
2618
2619         for (i = 0; i < im; i++)
2620                 tmscsim[i] = ints[i+1];
2621         /* dc390_checkparams (); */
2622         return 1;
2623 }
2624
2625 __setup("tmscsim=", dc390_setup);
2626 #endif