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 /* Uncomment SA_INTERRUPT, if the driver refuses to share its IRQ with other devices */
 183 #define DC390_IRQ SA_SHIRQ /* | SA_INTERRUPT */
 184
 185 /* DEBUG options */
 186 //#define DC390_DEBUG0
 187 //#define DC390_DEBUG1
 188 //#define DC390_DCBDEBUG
 189 //#define DC390_PARSEDEBUG
 190 //#define DC390_REMOVABLEDEBUG
 191 //#define DC390_LOCKDEBUG
 192
 193 //#define NOP do{}while(0)
 194 #define C_NOP
 195
 196 /* Debug definitions */
 197 #ifdef DC390_DEBUG0
 198 # define DEBUG0(x) x
 199 #else
 200 # define DEBUG0(x) C_NOP
 201 #endif
 202 #ifdef DC390_DEBUG1
 203 # define DEBUG1(x) x
 204 #else
 205 # define DEBUG1(x) C_NOP
 206 #endif
 207 #ifdef DC390_DCBDEBUG
 208 # define DCBDEBUG(x) x
 209 #else
 210 # define DCBDEBUG(x) C_NOP
 211 #endif
 212 #ifdef DC390_PARSEDEBUG
 213 # define PARSEDEBUG(x) x
 214 #else
 215 # define PARSEDEBUG(x) C_NOP
 216 #endif
 217 #ifdef DC390_REMOVABLEDEBUG
 218 # define REMOVABLEDEBUG(x) x
 219 #else
 220 # define REMOVABLEDEBUG(x) C_NOP
 221 #endif
 222 #define DCBDEBUG1(x) C_NOP
 223
 224 #include <linux/config.h>
 225 #include <linux/module.h>
 226 #include <linux/delay.h>
 227 #include <linux/signal.h>
 228 #include <linux/sched.h>
 229 #include <linux/errno.h>
 230 #include <linux/kernel.h>
 231 #include <linux/ioport.h>
 232 #include <linux/pci.h>
 233 #include <linux/proc_fs.h>
 234 #include <linux/string.h>
 235 #include <linux/mm.h>
 236 #include <linux/blkdev.h>
 237 #include <linux/timer.h>
 238 #include <linux/interrupt.h>
 239 #include <linux/init.h>
 240 #include <linux/spinlock.h>
 241 #include <asm/io.h>
 242
 243 #include <scsi/scsi.h>
 244 #include <scsi/scsi_cmnd.h>
 245 #include <scsi/scsi_device.h>
 246 #include <scsi/scsi_host.h>
 247 #include <scsi/scsicam.h>
 248
 249
 250 #define DC390_BANNER "Tekram DC390/AM53C974"
 251 #define DC390_VERSION "2.1d 2004-05-27"
 252
 253 #define PCI_DEVICE_ID_AMD53C974         PCI_DEVICE_ID_AMD_SCSI
 254
 255
 256  static struct pci_device_id tmscsim_pci_tbl[] = {
 257         {
 258                 .vendor         = PCI_VENDOR_ID_AMD,
 259                 .device         = PCI_DEVICE_ID_AMD53C974,
 260                 .subvendor      = PCI_ANY_ID,
 261                 .subdevice      = PCI_ANY_ID,
 262         },
 263         { }             /* Terminating entry */
 264 };
 265 MODULE_DEVICE_TABLE(pci, tmscsim_pci_tbl);
 266
 267 #include "tmscsim.h"
 268
 269 static u8 dc390_StartSCSI( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB );
 270 static void dc390_DataOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 271 static void dc390_DataIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 272 static void dc390_Command_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 273 static void dc390_Status_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 274 static void dc390_MsgOut_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 275 static void dc390_MsgIn_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 276 static void dc390_DataOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 277 static void dc390_DataInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 278 static void dc390_CommandPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 279 static void dc390_StatusPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 280 static void dc390_MsgOutPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 281 static void dc390_MsgInPhase( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 282 static void dc390_Nop_0( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 283 static void dc390_Nop_1( struct dc390_acb* pACB, struct dc390_srb* pSRB, u8 *psstatus);
 284
 285 static void dc390_SetXferRate( struct dc390_acb* pACB, struct dc390_dcb* pDCB );
 286 static void dc390_Disconnect( struct dc390_acb* pACB );
 287 static void dc390_Reselect( struct dc390_acb* pACB );
 288 static void dc390_SRBdone( struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB );
 289 static void dc390_DoingSRB_Done( struct dc390_acb* pACB, struct scsi_cmnd * cmd);
 290 static void dc390_ScsiRstDetect( struct dc390_acb* pACB );
 291 static void dc390_ResetSCSIBus( struct dc390_acb* pACB );
 292 static void dc390_EnableMsgOut_Abort(struct dc390_acb*, struct dc390_srb*);
 293 static irqreturn_t do_DC390_Interrupt( int, void *, struct pt_regs *);
 294
 295 static int    dc390_initAdapter(struct Scsi_Host *psh, unsigned long io_port, u8 Irq, u8 index );
 296 static void   dc390_updateDCB (struct dc390_acb* pACB, struct dc390_dcb* pDCB);
 297
 298 static struct dc390_acb*        dc390_pACB_start= NULL;
 299 static struct dc390_acb*        dc390_pACB_current = NULL;
 300 static u32      dc390_laststatus = 0;
 301 static u8       dc390_adapterCnt = 0;
 302
 303 /* Startup values, to be overriden on the commandline */
 304 static int tmscsim[] = {-2, -2, -2, -2, -2, -2};
 305 static int tmscsim_paramnum = ARRAY_SIZE(tmscsim);
 306
 307 module_param_array(tmscsim, int, tmscsim_paramnum, 0);
 308 MODULE_PARM_DESC(tmscsim, "Host SCSI ID, Speed (0=10MHz), Device Flags, Adapter Flags, Max Tags (log2(tags)-1), DelayReset (s)");
 309 MODULE_AUTHOR("C.L. Huang / Kurt Garloff");
 310 MODULE_DESCRIPTION("SCSI host adapter driver for Tekram DC390 and other AMD53C974A based PCI SCSI adapters");
 311 MODULE_LICENSE("GPL");
 312 MODULE_SUPPORTED_DEVICE("sd,sr,sg,st");
 313
 314 static void *dc390_phase0[]={
 315        dc390_DataOut_0,
 316        dc390_DataIn_0,
 317        dc390_Command_0,
 318        dc390_Status_0,
 319        dc390_Nop_0,
 320        dc390_Nop_0,
 321        dc390_MsgOut_0,
 322        dc390_MsgIn_0,
 323        dc390_Nop_1
 324        };
 325
 326 static void *dc390_phase1[]={
 327        dc390_DataOutPhase,
 328        dc390_DataInPhase,
 329        dc390_CommandPhase,
 330        dc390_StatusPhase,
 331        dc390_Nop_0,
 332        dc390_Nop_0,
 333        dc390_MsgOutPhase,
 334        dc390_MsgInPhase,
 335        dc390_Nop_1
 336        };
 337
 338 #ifdef DC390_DEBUG1
 339 static char* dc390_p0_str[] = {
 340        "dc390_DataOut_0",
 341        "dc390_DataIn_0",
 342        "dc390_Command_0",
 343        "dc390_Status_0",
 344        "dc390_Nop_0",
 345        "dc390_Nop_0",
 346        "dc390_MsgOut_0",
 347        "dc390_MsgIn_0",
 348        "dc390_Nop_1"
 349        };
 350
 351 static char* dc390_p1_str[] = {
 352        "dc390_DataOutPhase",
 353        "dc390_DataInPhase",
 354        "dc390_CommandPhase",
 355        "dc390_StatusPhase",
 356        "dc390_Nop_0",
 357        "dc390_Nop_0",
 358        "dc390_MsgOutPhase",
 359        "dc390_MsgInPhase",
 360        "dc390_Nop_1"
 361        };
 362 #endif
 363
 364 /* Devices erroneously pretending to be able to do TagQ */
 365 static u8  dc390_baddevname1[2][28] ={
 366        "SEAGATE ST3390N         9546",
 367        "HP      C3323-300       4269"};
 368 #define BADDEVCNT       2
 369
 370 static char*  dc390_adapname = "DC390";
 371 static u8  dc390_eepromBuf[MAX_ADAPTER_NUM][EE_LEN];
 372 static u8  dc390_clock_period1[] = {4, 5, 6, 7, 8, 10, 13, 20};
 373 static u8  dc390_clock_speed[] = {100,80,67,57,50, 40, 31, 20};
 374
 375 /***********************************************************************
 376  * Functions for access to DC390 EEPROM
 377  * and some to emulate it
 378  *
 379  **********************************************************************/
 380
 381
 382 static void __devinit dc390_EnDisableCE(u8 mode, struct pci_dev *pdev, u8 *regval)
 383 {
 384     u8 bval;
 385
 386     bval = 0;
 387     if(mode == ENABLE_CE)
 388         *regval = 0xc0;
 389     else
 390         *regval = 0x80;
 391     pci_write_config_byte(pdev, *regval, bval);
 392     if(mode == DISABLE_CE)
 393         pci_write_config_byte(pdev, *regval, bval);
 394     udelay(160);
 395 }
 396
 397
 398 /* Override EEprom values with explicitly set values */
 399 static void __devinit dc390_EEprom_Override (u8 index)
 400 {
 401     u8 *ptr = (u8 *) dc390_eepromBuf[index];
 402     u8 id;
 403
 404     /* Adapter Settings */
 405     if (tmscsim[0] != -2)
 406         ptr[EE_ADAPT_SCSI_ID] = (u8)tmscsim[0]; /* Adapter ID */
 407     if (tmscsim[3] != -2)
 408         ptr[EE_MODE2] = (u8)tmscsim[3];
 409     if (tmscsim[5] != -2)
 410         ptr[EE_DELAY] = tmscsim[5];                     /* Reset delay */
 411     if (tmscsim[4] != -2)
 412         ptr[EE_TAG_CMD_NUM] = (u8)tmscsim[4];   /* Tagged Cmds */
 413
 414     /* Device Settings */
 415     for (id = 0; id < MAX_SCSI_ID; id++)
 416     {
 417         if (tmscsim[2] != -2)
 418                 ptr[id<<2] = (u8)tmscsim[2];            /* EE_MODE1 */
 419         if (tmscsim[1] != -2)
 420                 ptr[(id<<2) + 1] = (u8)tmscsim[1];      /* EE_Speed */
 421     }
 422 }
 423
 424 /* Handle "-1" case */
 425 static void __devinit dc390_check_for_safe_settings (void)
 426 {
 427         if (tmscsim[0] == -1 || tmscsim[0] > 15) /* modules-2.0.0 passes -1 as string */
 428         {
 429                 tmscsim[0] = 7; tmscsim[1] = 4;
 430                 tmscsim[2] = 0x09; tmscsim[3] = 0x0f;
 431                 tmscsim[4] = 2; tmscsim[5] = 10;
 432                 printk (KERN_INFO "DC390: Using safe settings.\n");
 433         }
 434 }
 435
 436
 437 static int __initdata tmscsim_def[] = {7, 0 /* 10MHz */,
 438                 PARITY_CHK_ | SEND_START_ | EN_DISCONNECT_
 439                 | SYNC_NEGO_ | TAG_QUEUEING_,
 440                 MORE2_DRV | GREATER_1G | RST_SCSI_BUS | ACTIVE_NEGATION
 441                 /* | NO_SEEK */
 442 # ifdef CONFIG_SCSI_MULTI_LUN
 443                 | LUN_CHECK
 444 # endif
 445                 , 3 /* 16 Tags per LUN */, 1 /* s delay after Reset */ };
 446
 447 /* Copy defaults over set values where missing */
 448 static void __devinit dc390_fill_with_defaults (void)
 449 {
 450         int i;
 451         PARSEDEBUG(printk(KERN_INFO "DC390: setup %08x %08x %08x %08x %08x %08x\n", tmscsim[0],\
 452                           tmscsim[1], tmscsim[2], tmscsim[3], tmscsim[4], tmscsim[5]));
 453         for (i = 0; i < 6; i++)
 454         {
 455                 if (tmscsim[i] < 0 || tmscsim[i] > 255)
 456                         tmscsim[i] = tmscsim_def[i];
 457         }
 458         /* Sanity checks */
 459         if (tmscsim[0] >   7) tmscsim[0] =   7;
 460         if (tmscsim[1] >   7) tmscsim[1] =   4;
 461         if (tmscsim[4] >   5) tmscsim[4] =   4;
 462         if (tmscsim[5] > 180) tmscsim[5] = 180;
 463 }
 464
 465 #ifndef MODULE
 466 /* Override defaults on cmdline:
 467  * tmscsim: AdaptID, MaxSpeed (Index), DevMode (Bitmapped), AdaptMode (Bitmapped)
 468  */
 469 static int __init dc390_setup (char *str)
 470 {
 471         int ints[8];
 472         int i, im;
 473         (void)get_options (str, ARRAY_SIZE(ints), ints);
 474         im = ints[0];
 475         if (im > 6)
 476         {
 477                 printk (KERN_NOTICE "DC390: ignore extra params!\n");
 478                 im = 6;
 479         }
 480         for (i = 0; i < im; i++)
 481                 tmscsim[i] = ints[i+1];
 482         /* dc390_checkparams (); */
 483         return 1;
 484 }
 485
 486 __setup("tmscsim=", dc390_setup);
 487 #endif
 488
 489 static void __devinit dc390_EEpromOutDI(struct pci_dev *pdev, u8 *regval, u8 Carry)
 490 {
 491     u8 bval;
 492
 493     bval = 0;
 494     if(Carry)
 495     {
 496         bval = 0x40;
 497         *regval = 0x80;
 498         pci_write_config_byte(pdev, *regval, bval);
 499     }
 500     udelay(160);
 501     bval |= 0x80;
 502     pci_write_config_byte(pdev, *regval, bval);
 503     udelay(160);
 504     bval = 0;
 505     pci_write_config_byte(pdev, *regval, bval);
 506     udelay(160);
 507 }
 508
 509
 510 static u8 __devinit dc390_EEpromInDO(struct pci_dev *pdev)
 511 {
 512     u8 bval;
 513
 514     pci_write_config_byte(pdev, 0x80, 0x80);
 515     udelay(160);
 516     pci_write_config_byte(pdev, 0x80, 0x40);
 517     udelay(160);
 518     pci_read_config_byte(pdev, 0x00, &bval);
 519     if(bval == 0x22)
 520         return(1);
 521     else
 522         return(0);
 523 }
 524
 525
 526 static u16 __devinit dc390_EEpromGetData1(struct pci_dev *pdev)
 527 {
 528     u8 i;
 529     u8 carryFlag;
 530     u16 wval;
 531
 532     wval = 0;
 533     for(i=0; i<16; i++)
 534     {
 535         wval <<= 1;
 536         carryFlag = dc390_EEpromInDO(pdev);
 537         wval |= carryFlag;
 538     }
 539     return(wval);
 540 }
 541
 542
 543 static void __devinit dc390_Prepare(struct pci_dev *pdev, u8 *regval, u8 EEpromCmd)
 544 {
 545     u8 i,j;
 546     u8 carryFlag;
 547
 548     carryFlag = 1;
 549     j = 0x80;
 550     for(i=0; i<9; i++)
 551     {
 552         dc390_EEpromOutDI(pdev, regval, carryFlag);
 553         carryFlag = (EEpromCmd & j) ? 1 : 0;
 554         j >>= 1;
 555     }
 556 }
 557
 558
 559 static void __devinit dc390_ReadEEprom(struct pci_dev *pdev, u16 *ptr)
 560 {
 561     u8   regval,cmd;
 562     u8   i;
 563
 564     cmd = EEPROM_READ;
 565     for(i=0; i<0x40; i++)
 566     {
 567         dc390_EnDisableCE(ENABLE_CE, pdev, &regval);
 568         dc390_Prepare(pdev, &regval, cmd++);
 569         *ptr++ = dc390_EEpromGetData1(pdev);
 570         dc390_EnDisableCE(DISABLE_CE, pdev, &regval);
 571     }
 572 }
 573
 574
 575 static void __devinit dc390_interpret_delay (u8 index)
 576 {
 577     char interpd [] = {1,3,5,10,16,30,60,120};
 578     dc390_eepromBuf[index][EE_DELAY] = interpd [dc390_eepromBuf[index][EE_DELAY]];
 579 }
 580
 581 static u8 __devinit dc390_CheckEEpromCheckSum(struct pci_dev *pdev, u8 index)
 582 {
 583     u8  i;
 584     char  EEbuf[128];
 585     u16 wval, *ptr = (u16 *)EEbuf;
 586
 587     dc390_ReadEEprom(pdev, ptr);
 588     memcpy (dc390_eepromBuf[index], EEbuf, EE_ADAPT_SCSI_ID);
 589     memcpy (&dc390_eepromBuf[index][EE_ADAPT_SCSI_ID],
 590             &EEbuf[REAL_EE_ADAPT_SCSI_ID], EE_LEN - EE_ADAPT_SCSI_ID);
 591     dc390_interpret_delay (index);
 592
 593     wval = 0;
 594     for(i=0; i<0x40; i++, ptr++)
 595         wval += *ptr;
 596     return (wval == 0x1234 ? 0 : 1);
 597 }
 598
 599
 600 /***********************************************************************
 601  * Functions for the management of the internal structures
 602  * (DCBs, SRBs, Queueing)
 603  *
 604  **********************************************************************/
 605 static struct dc390_dcb __inline__ *dc390_findDCB ( struct dc390_acb* pACB, u8 id, u8 lun)
 606 {
 607    struct dc390_dcb* pDCB = pACB->pLinkDCB; if (!pDCB) return NULL;
 608    while (pDCB->TargetID != id || pDCB->TargetLUN != lun)
 609      {
 610         pDCB = pDCB->pNextDCB;
 611         if (pDCB == pACB->pLinkDCB)
 612              return NULL;
 613      }
 614    DCBDEBUG1( printk (KERN_DEBUG "DCB %p (%02x,%02x) found.\n", \
 615                       pDCB, pDCB->TargetID, pDCB->TargetLUN));
 616    return pDCB;
 617 }
 618
 619 /* Queueing philosphy:
 620  * There are a couple of lists:
 621  * - Query: Contains the Scsi Commands not yet turned into SRBs (per ACB)
 622  *   (Note: For new EH, it is unnecessary!)
 623  * - Waiting: Contains a list of SRBs not yet sent (per DCB)
 624  * - Free: List of free SRB slots
 625  *
 626  * If there are no waiting commands for the DCB, the new one is sent to the bus
 627  * otherwise the oldest one is taken from the Waiting list and the new one is
 628  * queued to the Waiting List
 629  *
 630  * Lists are managed using two pointers and eventually a counter
 631  */
 632
 633 /* Return next free SRB */
 634 static __inline__ struct dc390_srb* dc390_Free_get ( struct dc390_acb* pACB )
 635 {
 636     struct dc390_srb*   pSRB;
 637
 638     pSRB = pACB->pFreeSRB;
 639     DEBUG0(printk ("DC390: Get Free SRB %p\n", pSRB));
 640     if( pSRB )
 641     {
 642         pACB->pFreeSRB = pSRB->pNextSRB;
 643         pSRB->pNextSRB = NULL;
 644     }
 645
 646     return( pSRB );
 647 }
 648
 649 /* Insert SRB oin top of free list */
 650 static __inline__ void dc390_Free_insert (struct dc390_acb* pACB, struct dc390_srb* pSRB)
 651 {
 652     DEBUG0(printk ("DC390: Free SRB %p\n", pSRB));
 653     pSRB->pNextSRB = pACB->pFreeSRB;
 654     pACB->pFreeSRB = pSRB;
 655 }
 656
 657
 658 /* Inserts a SRB to the top of the Waiting list */
 659 static __inline__ void dc390_Waiting_insert ( struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
 660 {
 661     DEBUG0(printk ("DC390: Insert pSRB %p cmd %li to Waiting\n", pSRB, pSRB->pcmd->pid));
 662     pSRB->pNextSRB = pDCB->pWaitingSRB;
 663     if (!pDCB->pWaitingSRB)
 664         pDCB->pWaitLast = pSRB;
 665     pDCB->pWaitingSRB = pSRB;
 666     pDCB->WaitSRBCnt++;
 667 }
 668
 669
 670 /* Queue SRB to waiting list */
 671 static __inline__ void dc390_Waiting_append ( struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
 672 {
 673         DEBUG0(printk ("DC390: Append pSRB %p cmd %li to Waiting\n", pSRB, pSRB->pcmd->pid));
 674     if( pDCB->pWaitingSRB )
 675         pDCB->pWaitLast->pNextSRB = pSRB;
 676     else
 677         pDCB->pWaitingSRB = pSRB;
 678
 679     pDCB->pWaitLast = pSRB;
 680     pSRB->pNextSRB = NULL;
 681     pDCB->WaitSRBCnt++;
 682     pDCB->pDCBACB->CmdInQ++;
 683 }
 684
 685 static __inline__ void dc390_Going_append (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
 686 {
 687     pDCB->GoingSRBCnt++;
 688     DEBUG0(printk("DC390: Append SRB %p to Going\n", pSRB));
 689     /* Append to the list of Going commands */
 690     if( pDCB->pGoingSRB )
 691         pDCB->pGoingLast->pNextSRB = pSRB;
 692     else
 693         pDCB->pGoingSRB = pSRB;
 694
 695     pDCB->pGoingLast = pSRB;
 696     /* No next one in sent list */
 697     pSRB->pNextSRB = NULL;
 698 }
 699
 700 static __inline__ void dc390_Going_remove (struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
 701 {
 702         DEBUG0(printk("DC390: Remove SRB %p from Going\n", pSRB));
 703    if (pSRB == pDCB->pGoingSRB)
 704         pDCB->pGoingSRB = pSRB->pNextSRB;
 705    else
 706      {
 707         struct dc390_srb* psrb = pDCB->pGoingSRB;
 708         while (psrb && psrb->pNextSRB != pSRB)
 709           psrb = psrb->pNextSRB;
 710         if (!psrb)
 711           { printk (KERN_ERR "DC390: Remove non-ex. SRB %p from Going!\n", pSRB); return; }
 712         psrb->pNextSRB = pSRB->pNextSRB;
 713         if (pSRB == pDCB->pGoingLast)
 714           pDCB->pGoingLast = psrb;
 715      }
 716    pDCB->GoingSRBCnt--;
 717 }
 718
 719 /* Moves SRB from Going list to the top of Waiting list */
 720 static void dc390_Going_to_Waiting ( struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
 721 {
 722     DEBUG0(printk(KERN_INFO "DC390: Going_to_Waiting (SRB %p) pid = %li\n", pSRB, pSRB->pcmd->pid));
 723     /* Remove SRB from Going */
 724     dc390_Going_remove (pDCB, pSRB);
 725     /* Insert on top of Waiting */
 726     dc390_Waiting_insert (pDCB, pSRB);
 727     /* Tag Mask must be freed elsewhere ! (KG, 99/06/18) */
 728 }
 729
 730 /* Moves first SRB from Waiting list to Going list */
 731 static __inline__ void dc390_Waiting_to_Going ( struct dc390_dcb* pDCB, struct dc390_srb* pSRB )
 732 {
 733         /* Remove from waiting list */
 734         DEBUG0(printk("DC390: Remove SRB %p from head of Waiting\n", pSRB));
 735         pDCB->pWaitingSRB = pSRB->pNextSRB;
 736         if( !pDCB->pWaitingSRB ) pDCB->pWaitLast = NULL;
 737         pDCB->WaitSRBCnt--;
 738         dc390_Going_append (pDCB, pSRB);
 739 }
 740
 741 static void DC390_waiting_timed_out (unsigned long ptr);
 742 /* Sets the timer to wake us up */
 743 static void dc390_waiting_timer (struct dc390_acb* pACB, unsigned long to)
 744 {
 745         if (timer_pending (&pACB->Waiting_Timer)) return;
 746         init_timer (&pACB->Waiting_Timer);
 747         pACB->Waiting_Timer.function = DC390_waiting_timed_out;
 748         pACB->Waiting_Timer.data = (unsigned long)pACB;
 749         if (time_before (jiffies + to, pACB->pScsiHost->last_reset))
 750                 pACB->Waiting_Timer.expires = pACB->pScsiHost->last_reset + 1;
 751         else
 752                 pACB->Waiting_Timer.expires = jiffies + to + 1;
 753         add_timer (&pACB->Waiting_Timer);
 754 }
 755
 756
 757 /* Send the next command from the waiting list to the bus */
 758 static void dc390_Waiting_process ( struct dc390_acb* pACB )
 759 {
 760     struct dc390_dcb *ptr, *ptr1;
 761     struct dc390_srb *pSRB;
 762
 763     if( (pACB->pActiveDCB) || (pACB->ACBFlag & (RESET_DETECT+RESET_DONE+RESET_DEV) ) )
 764         return;
 765     if (timer_pending (&pACB->Waiting_Timer)) del_timer (&pACB->Waiting_Timer);
 766     ptr = pACB->pDCBRunRobin;
 767     if( !ptr )
 768       {
 769         ptr = pACB->pLinkDCB;
 770         pACB->pDCBRunRobin = ptr;
 771       }
 772     ptr1 = ptr;
 773     if (!ptr1) return;
 774     do
 775       {
 776         pACB->pDCBRunRobin = ptr1->pNextDCB;
 777         if( !( pSRB = ptr1->pWaitingSRB ) ||
 778             ( ptr1->MaxCommand <= ptr1->GoingSRBCnt ))
 779           ptr1 = ptr1->pNextDCB;
 780         else
 781           {
 782             /* Try to send to the bus */
 783             if( !dc390_StartSCSI(pACB, ptr1, pSRB) )
 784               dc390_Waiting_to_Going (ptr1, pSRB);
 785             else
 786               dc390_waiting_timer (pACB, HZ/5);
 787             break;
 788           }
 789       } while (ptr1 != ptr);
 790     return;
 791 }
 792
 793 /* Wake up waiting queue */
 794 static void DC390_waiting_timed_out (unsigned long ptr)
 795 {
 796         struct dc390_acb* pACB = (struct dc390_acb*)ptr;
 797         unsigned long iflags;
 798         DEBUG0(printk ("DC390: Debug: Waiting queue woken up by timer!\n"));
 799         spin_lock_irqsave(pACB->pScsiHost->host_lock, iflags);
 800         dc390_Waiting_process (pACB);
 801         spin_unlock_irqrestore(pACB->pScsiHost->host_lock, iflags);
 802 }
 803
 804 /***********************************************************************
 805  * Function: static void dc390_SendSRB (struct dc390_acb* pACB, struct dc390_srb* pSRB)
 806  *
 807  * Purpose: Send SCSI Request Block (pSRB) to adapter (pACB)
 808  *
 809  ***********************************************************************/
 810
 811 static void dc390_SendSRB( struct dc390_acb* pACB, struct dc390_srb* pSRB )
 812 {
 813     struct dc390_dcb*   pDCB;
 814
 815     pDCB = pSRB->pSRBDCB;
 816     if( (pDCB->MaxCommand <= pDCB->GoingSRBCnt) || (pACB->pActiveDCB) ||
 817         (pACB->ACBFlag & (RESET_DETECT+RESET_DONE+RESET_DEV)) )
 818     {
 819         dc390_Waiting_append (pDCB, pSRB);
 820         dc390_Waiting_process (pACB);
 821         return;
 822     }
 823
 824 #if 0
 825     if( pDCB->pWaitingSRB )
 826     {
 827         dc390_Waiting_append (pDCB, pSRB);
 828 /*      pSRB = GetWaitingSRB(pDCB); */  /* non-existent */
 829         pSRB = pDCB->pWaitingSRB;
 830         /* Remove from waiting list */
 831         pDCB->pWaitingSRB = pSRB->pNextSRB;
 832         pSRB->pNextSRB = NULL;
 833         if (!pDCB->pWaitingSRB) pDCB->pWaitLast = NULL;
 834     }
 835 #endif
 836
 837     if (!dc390_StartSCSI(pACB, pDCB, pSRB))
 838         dc390_Going_append (pDCB, pSRB);
 839     else {
 840         dc390_Waiting_insert (pDCB, pSRB);
 841         dc390_waiting_timer (pACB, HZ/5);
 842     }
 843 }
 844
 845 static struct scatterlist* dc390_sg_build_single(struct scatterlist *sg, void *addr, unsigned int length)
 846 {
 847         memset(sg, 0, sizeof(struct scatterlist));
 848         sg->page        = virt_to_page(addr);
 849         sg->length      = length;
 850         sg->offset      = (unsigned long)addr & ~PAGE_MASK;
 851         return sg;
 852 }
 853
 854 /* Create pci mapping */
 855 static int dc390_pci_map (struct dc390_srb* pSRB)
 856 {
 857         int error = 0;
 858         struct scsi_cmnd *pcmd = pSRB->pcmd;
 859         struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
 860         dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp));
 861
 862         /* Map sense buffer */
 863         if (pSRB->SRBFlag & AUTO_REQSENSE) {
 864                 pSRB->pSegmentList      = dc390_sg_build_single(&pSRB->Segmentx, pcmd->sense_buffer, sizeof(pcmd->sense_buffer));
 865                 pSRB->SGcount           = pci_map_sg(pdev, pSRB->pSegmentList, 1,
 866                                                      DMA_FROM_DEVICE);
 867                 cmdp->saved_dma_handle  = sg_dma_address(pSRB->pSegmentList);
 868
 869                 /* TODO: error handling */
 870                 if (pSRB->SGcount != 1)
 871                         error = 1;
 872                 DEBUG1(printk("%s(): Mapped sense buffer %p at %x\n", __FUNCTION__, pcmd->sense_buffer, cmdp->saved_dma_handle));
 873         /* Map SG list */
 874         } else if (pcmd->use_sg) {
 875                 pSRB->pSegmentList      = (struct scatterlist *) pcmd->request_buffer;
 876                 pSRB->SGcount           = pci_map_sg(pdev, pSRB->pSegmentList, pcmd->use_sg,
 877                                                      pcmd->sc_data_direction);
 878                 /* TODO: error handling */
 879                 if (!pSRB->SGcount)
 880                         error = 1;
 881                 DEBUG1(printk("%s(): Mapped SG %p with %d (%d) elements\n",\
 882                               __FUNCTION__, pcmd->request_buffer, pSRB->SGcount, pcmd->use_sg));
 883         /* Map single segment */
 884         } else if (pcmd->request_buffer && pcmd->request_bufflen) {
 885                 pSRB->pSegmentList      = dc390_sg_build_single(&pSRB->Segmentx, pcmd->request_buffer, pcmd->request_bufflen);
 886                 pSRB->SGcount           = pci_map_sg(pdev, pSRB->pSegmentList, 1,
 887                                                      pcmd->sc_data_direction);
 888                 cmdp->saved_dma_handle  = sg_dma_address(pSRB->pSegmentList);
 889
 890                 /* TODO: error handling */
 891                 if (pSRB->SGcount != 1)
 892                         error = 1;
 893                 DEBUG1(printk("%s(): Mapped request buffer %p at %x\n", __FUNCTION__, pcmd->request_buffer, cmdp->saved_dma_handle));
 894         /* No mapping !? */
 895         } else
 896                 pSRB->SGcount = 0;
 897
 898         return error;
 899 }
 900
 901 /* Remove pci mapping */
 902 static void dc390_pci_unmap (struct dc390_srb* pSRB)
 903 {
 904         struct scsi_cmnd *pcmd = pSRB->pcmd;
 905         struct pci_dev *pdev = pSRB->pSRBDCB->pDCBACB->pdev;
 906         DEBUG1(dc390_cmd_scp_t* cmdp = ((dc390_cmd_scp_t*)(&pcmd->SCp)));
 907
 908         if (pSRB->SRBFlag) {
 909                 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, DMA_FROM_DEVICE);
 910                 DEBUG1(printk("%s(): Unmapped sense buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
 911         } else if (pcmd->use_sg) {
 912                 pci_unmap_sg(pdev, pcmd->request_buffer, pcmd->use_sg, pcmd->sc_data_direction);
 913                 DEBUG1(printk("%s(): Unmapped SG at %p with %d elements\n", __FUNCTION__, pcmd->request_buffer, pcmd->use_sg));
 914         } else if (pcmd->request_buffer && pcmd->request_bufflen) {
 915                 pci_unmap_sg(pdev, &pSRB->Segmentx, 1, pcmd->sc_data_direction);
 916                 DEBUG1(printk("%s(): Unmapped request buffer at %x\n", __FUNCTION__, cmdp->saved_dma_handle));
 917         }
 918 }
 919
 920
 921 /***********************************************************************
 922  * Function: static void dc390_BuildSRB (Scsi_Cmd *pcmd, struct dc390_dcb* pDCB,
 923  *                                       struct dc390_srb* pSRB)
 924  *
 925  * Purpose: Prepare SRB for being sent to Device DCB w/ command *pcmd
 926  *
 927  ***********************************************************************/
 928
 929 static void dc390_BuildSRB (struct scsi_cmnd *pcmd, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
 930 {
 931     pSRB->pSRBDCB = pDCB;
 932     pSRB->pcmd = pcmd;
 933
 934     pSRB->SGIndex = 0;
 935     pSRB->AdaptStatus = 0;
 936     pSRB->TargetStatus = 0;
 937     pSRB->MsgCnt = 0;
 938     if( pDCB->DevType != TYPE_TAPE )
 939         pSRB->RetryCnt = 1;
 940     else
 941         pSRB->RetryCnt = 0;
 942     pSRB->SRBStatus = 0;
 943     pSRB->SRBFlag = 0;
 944     pSRB->SRBState = 0;
 945     pSRB->TotalXferredLen = 0;
 946     pSRB->SGBusAddr = 0;
 947     pSRB->SGToBeXferLen = 0;
 948     pSRB->ScsiPhase = 0;
 949     pSRB->EndMessage = 0;
 950     pSRB->TagNumber = 255;
 951     /* KG: deferred PCI mapping to dc390_StartSCSI */
 952 }
 953
 954 /***********************************************************************
 955  * Function : static int DC390_queue_command (struct scsi_cmnd *cmd,
 956  *                                             void (*done)(struct scsi_cmnd *))
 957  *
 958  * Purpose : enqueues a SCSI command
 959  *
 960  * Inputs : cmd - SCSI command, done - callback function called on
 961  *          completion, with a pointer to the command descriptor.
 962  *
 963  * Returns : (depending on kernel version)
 964  * 2.0.x: always return 0
 965  * 2.1.x: old model: (use_new_eh_code == 0): like 2.0.x
 966  *        TO BE DONE:
 967  *        new model: return 0 if successful, or must not be re-queued
 968  *                   return 1 if command cannot be queued (queue full)
 969  *                   command will be inserted in midlevel queue then ...
 970  *
 971  ***********************************************************************/
 972
 973 static int DC390_queue_command(struct scsi_cmnd *cmd,
 974                 void (* done)(struct scsi_cmnd *))
 975 {
 976     struct dc390_dcb*   pDCB = (struct dc390_dcb*) cmd->device->hostdata;
 977     struct dc390_srb*   pSRB;
 978     struct dc390_acb*   pACB = (struct dc390_acb*) cmd->device->host->hostdata;
 979
 980     pACB->Cmds++;
 981     cmd->scsi_done = done;
 982     cmd->result = 0;
 983
 984     pSRB = dc390_Free_get(pACB);
 985     if (!pSRB)
 986             goto requeue;
 987
 988     dc390_BuildSRB(cmd, pDCB, pSRB);
 989     if (pDCB->pWaitingSRB) {
 990             dc390_Waiting_append(pDCB, pSRB);
 991             dc390_Waiting_process(pACB);
 992     } else
 993             dc390_SendSRB(pACB, pSRB);
 994
 995     DEBUG1(printk (KERN_DEBUG " ... command (pid %li) queued successfully.\n", cmd->pid));
 996     return(0);
 997
 998  requeue:
 999     return 1;
1000 }
1001
1002 static void dc390_dumpinfo (struct dc390_acb* pACB, struct dc390_dcb* pDCB, struct dc390_srb* pSRB)
1003 {
1004     struct pci_dev *pdev;
1005     u16 pstat;
1006
1007     if (!pDCB) pDCB = pACB->pActiveDCB;
1008     if (!pSRB && pDCB) pSRB = pDCB->pActiveSRB;
1009
1010     if (pSRB)
1011     {
1012         printk ("DC390: SRB: Xferred %08lx, Remain %08lx, State %08x, Phase %02x\n",
1013                 pSRB->TotalXferredLen, pSRB->SGToBeXferLen, pSRB->SRBState,
1014                 pSRB->ScsiPhase);
1015         printk ("DC390: AdpaterStatus: %02x, SRB Status %02x\n", pSRB->AdaptStatus, pSRB->SRBStatus);
1016     }
1017     printk ("DC390: Status of last IRQ (DMA/SC/Int/IRQ): %08x\n", dc390_laststatus);
1018     printk ("DC390: Register dump: SCSI block:\n");
1019     printk ("DC390: XferCnt  Cmd Stat IntS IRQS FFIS Ctl1 Ctl2 Ctl3 Ctl4\n");
1020     printk ("DC390:  %06x   %02x   %02x   %02x",
1021             DC390_read8(CtcReg_Low) + (DC390_read8(CtcReg_Mid) << 8) + (DC390_read8(CtcReg_High) << 16),
1022             DC390_read8(ScsiCmd), DC390_read8(Scsi_Status), DC390_read8(Intern_State));
1023     printk ("   %02x   %02x   %02x   %02x   %02x   %02x\n",
1024             DC390_read8(INT_Status), DC390_read8(Current_Fifo), DC390_read8(CtrlReg1),
1025             DC390_read8(CtrlReg2), DC390_read8(CtrlReg3), DC390_read8(CtrlReg4));
1026     DC390_write32 (DMA_ScsiBusCtrl, WRT_ERASE_DMA_STAT | EN_INT_ON_PCI_ABORT);
1027     if (DC390_read8(Current_Fifo) & 0x1f)
1028       {
1029         printk ("DC390: FIFO:");
1030         while (DC390_read8(Current_Fifo) & 0x1f) printk (" %02x", DC390_read8(ScsiFifo));
1031         printk ("\n");
1032       }
1033     printk ("DC390: Register dump: DMA engine:\n");
1034     printk ("DC390: Cmd   STrCnt    SBusA    WrkBC    WrkAC Stat SBusCtrl\n");
1035     printk ("DC390:  %02x %08x %08x %08x %08x   %02x %08x\n",
1036             DC390_read8(DMA_Cmd), DC390_read32(DMA_XferCnt), DC390_read32(DMA_XferAddr),
1037             DC390_read32(DMA_Wk_ByteCntr), DC390_read32(DMA_Wk_AddrCntr),
1038             DC390_read8(DMA_Status), DC390_read32(DMA_ScsiBusCtrl));
1039     DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
1040
1041     pdev = pACB->pdev;
1042     pci_read_config_word(pdev, PCI_STATUS, &pstat);
1043     printk ("DC390: Register dump: PCI Status: %04x\n", pstat);
1044     printk ("DC390: In case of driver trouble read Documentation/scsi/tmscsim.txt\n");
1045 }
1046
1047
1048 static int DC390_abort(struct scsi_cmnd *cmd)
1049 {
1050         struct dc390_acb *pACB = (struct dc390_acb*) cmd->device->host->hostdata;
1051         struct dc390_dcb *pDCB = (struct dc390_dcb*) cmd->device->hostdata;
1052         struct dc390_srb *pSRB, *psrb;
1053
1054         printk("DC390: Abort command (pid %li, Device %02i-%02i)\n",
1055                cmd->pid, cmd->device->id, cmd->device->lun);
1056
1057         pSRB = pDCB->pWaitingSRB;
1058         if (!pSRB)
1059                 goto on_going;
1060
1061         /* Now scan Waiting queue */
1062         if (pSRB->pcmd != cmd) {
1063                 psrb = pSRB;
1064                 if (!(psrb->pNextSRB))
1065                         goto on_going;
1066
1067                 while (psrb->pNextSRB->pcmd != cmd) {
1068                         psrb = psrb->pNextSRB;
1069                         if (!(psrb->pNextSRB) || psrb == pSRB)
1070                                 goto on_going;
1071                 }
1072
1073                 pSRB = psrb->pNextSRB;
1074                 psrb->pNextSRB = pSRB->pNextSRB;
1075                 if (pSRB == pDCB->pWaitLast)
1076                         pDCB->pWaitLast = psrb;
1077         } else
1078                 pDCB->pWaitingSRB = pSRB->pNextSRB;
1079
1080         dc390_Free_insert(pACB, pSRB);
1081         pDCB->WaitSRBCnt--;
1082         INIT_LIST_HEAD((struct list_head*)&cmd->SCp);
1083
1084         return SUCCESS;
1085
1086 on_going:
1087         /* abort() is too stupid for already sent commands at the moment.
1088          * If it's called we are in trouble anyway, so let's dump some info
1089          * into the syslog at least. (KG, 98/08/20,99/06/20) */
1090         dc390_dumpinfo(pACB, pDCB, pSRB);
1091
1092         pDCB->DCBFlag |= ABORT_DEV_;
1093         printk(KERN_INFO "DC390: Aborted pid %li\n", cmd->pid);
1094
1095         return FAILED;
1096 }
1097
1098
1099 static void dc390_ResetDevParam( struct dc390_acb* pACB )
1100 {
1101     struct dc390_dcb *pDCB, *pdcb;
1102
1103     pDCB = pACB->pLinkDCB;
1104     if (! pDCB) return;
1105     pdcb = pDCB;
1106     do
1107     {
1108         pDCB->SyncMode &= ~SYNC_NEGO_DONE;
1109         pDCB->SyncPeriod = 0;
1110         pDCB->SyncOffset = 0;
1111         pDCB->TagMask = 0;
1112         pDCB->CtrlR3 = FAST_CLK;
1113         pDCB->CtrlR4 &= NEGATE_REQACKDATA | CTRL4_RESERVED | NEGATE_REQACK;
1114         pDCB->CtrlR4 |= pACB->glitch_cfg;
1115         pDCB = pDCB->pNextDCB;
1116     }
1117     while( pdcb != pDCB );
1118     pACB->ACBFlag &= ~(RESET_DEV | RESET_DONE | RESET_DETECT);
1119
1120 }
1121
1122 static int DC390_bus_reset (struct scsi_cmnd *cmd)
1123 {
1124         struct dc390_acb*    pACB = (struct dc390_acb*) cmd->device->host->hostdata;
1125         u8   bval;
1126
1127         del_timer (&pACB->Waiting_Timer);
1128
1129         bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
1130         DC390_write8(CtrlReg1, bval);   /* disable IRQ on bus reset */
1131
1132         pACB->ACBFlag |= RESET_DEV;
1133         dc390_ResetSCSIBus(pACB);
1134
1135         dc390_ResetDevParam(pACB);
1136         udelay(1000);
1137         pACB->pScsiHost->last_reset = jiffies + 3*HZ/2
1138                 + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1139
1140         DC390_write8(ScsiCmd, CLEAR_FIFO_CMD);
1141         DC390_read8(INT_Status);                /* Reset Pending INT */
1142
1143         dc390_DoingSRB_Done(pACB, cmd);
1144
1145         pACB->pActiveDCB = NULL;
1146         pACB->ACBFlag = 0;
1147
1148         bval = DC390_read8(CtrlReg1) & ~DIS_INT_ON_SCSI_RST;
1149         DC390_write8(CtrlReg1, bval);   /* re-enable interrupt */
1150
1151         dc390_Waiting_process(pACB);
1152
1153         return SUCCESS;
1154 }
1155
1156 #include "scsiiom.c"
1157
1158 /***********************************************************************
1159  * Function : static void dc390_updateDCB()
1160  *
1161  * Purpose :  Set the configuration dependent DCB parameters
1162  ***********************************************************************/
1163
1164 static void dc390_updateDCB (struct dc390_acb* pACB, struct dc390_dcb* pDCB)
1165 {
1166   pDCB->SyncMode &= EN_TAG_QUEUEING | SYNC_NEGO_DONE /*| EN_ATN_STOP*/;
1167   if (pDCB->DevMode & TAG_QUEUEING_) {
1168         //if (pDCB->SyncMode & EN_TAG_QUEUEING) pDCB->MaxCommand = pACB->TagMaxNum;
1169   } else {
1170         pDCB->SyncMode &= ~EN_TAG_QUEUEING;
1171         pDCB->MaxCommand = 1;
1172   }
1173
1174   if( pDCB->DevMode & SYNC_NEGO_ )
1175         pDCB->SyncMode |= SYNC_ENABLE;
1176   else {
1177         pDCB->SyncMode &= ~(SYNC_NEGO_DONE | SYNC_ENABLE);
1178         pDCB->SyncOffset &= ~0x0f;
1179   }
1180
1181   //if (! (pDCB->DevMode & EN_DISCONNECT_)) pDCB->SyncMode &= ~EN_ATN_STOP;
1182
1183   pDCB->CtrlR1 = pACB->pScsiHost->this_id;
1184   if( pDCB->DevMode & PARITY_CHK_ )
1185         pDCB->CtrlR1 |= PARITY_ERR_REPO;
1186 }
1187
1188 /***********************************************************************
1189  * Function : static void dc390_initSRB()
1190  *
1191  * Purpose :  initialize the internal structures for a given SRB
1192  *
1193  * Inputs : psrb - pointer to this scsi request block structure
1194  ***********************************************************************/
1195
1196 static void __inline__ dc390_initSRB( struct dc390_srb* psrb )
1197 {
1198   /* psrb->PhysSRB = virt_to_phys( psrb ); */
1199 }
1200
1201
1202 static void dc390_linkSRB( struct dc390_acb* pACB )
1203 {
1204     u32   count, i;
1205
1206     count = pACB->SRBCount;
1207     for( i=0; i<count; i++)
1208     {
1209         if( i != count-1 )
1210             pACB->SRB_array[i].pNextSRB = &pACB->SRB_array[i+1];
1211         else
1212             pACB->SRB_array[i].pNextSRB = NULL;
1213         dc390_initSRB( &pACB->SRB_array[i] );
1214     }
1215 }
1216
1217
1218 /***********************************************************************
1219  * Function : static void dc390_initACB ()
1220  *
1221  * Purpose :  initialize the internal structures for a given SCSI host
1222  *
1223  * Inputs : psh - pointer to this host adapter's structure
1224  *          io_port, Irq, index: Resources and adapter index
1225  ***********************************************************************/
1226
1227 static void __devinit dc390_initACB (struct Scsi_Host *psh, unsigned long io_port, u8 Irq, u8 index)
1228 {
1229     struct dc390_acb*    pACB;
1230
1231     psh->can_queue = MAX_CMD_QUEUE;
1232     psh->cmd_per_lun = MAX_CMD_PER_LUN;
1233     psh->this_id = (int) dc390_eepromBuf[index][EE_ADAPT_SCSI_ID];
1234     psh->io_port = io_port;
1235     psh->n_io_port = 0x80;
1236     psh->irq = Irq;
1237     psh->base = io_port;
1238     psh->unique_id = io_port;
1239     psh->dma_channel = -1;
1240     psh->last_reset = jiffies;
1241
1242     pACB = (struct dc390_acb*) psh->hostdata;
1243
1244     pACB->pScsiHost = psh;
1245     pACB->IOPortBase = (u16) io_port;
1246     pACB->IRQLevel = Irq;
1247
1248     DEBUG0(printk (KERN_INFO "DC390: Adapter index %i, ID %i, IO 0x%08x, IRQ 0x%02x\n", \
1249                    index, psh->this_id, (int)io_port, Irq));
1250
1251     psh->max_id = 8;
1252
1253     if( psh->max_id - 1 == dc390_eepromBuf[index][EE_ADAPT_SCSI_ID] )
1254         psh->max_id--;
1255     psh->max_lun = 1;
1256     if( dc390_eepromBuf[index][EE_MODE2] & LUN_CHECK )
1257         psh->max_lun = 8;
1258
1259     pACB->pLinkDCB = NULL;
1260     pACB->pDCBRunRobin = NULL;
1261     pACB->pActiveDCB = NULL;
1262     pACB->pFreeSRB = pACB->SRB_array;
1263     pACB->SRBCount = MAX_SRB_CNT;
1264     pACB->AdapterIndex = index;
1265     pACB->status = 0;
1266     pACB->DCBCnt = 0;
1267     pACB->TagMaxNum = 2 << dc390_eepromBuf[index][EE_TAG_CMD_NUM];
1268     pACB->ACBFlag = 0;
1269     pACB->scan_devices = 1;
1270     pACB->MsgLen = 0;
1271     pACB->Ignore_IRQ = 0;
1272     pACB->Gmode2 = dc390_eepromBuf[index][EE_MODE2];
1273     dc390_linkSRB( pACB );
1274     pACB->pTmpSRB = &pACB->TmpSRB;
1275     dc390_initSRB( pACB->pTmpSRB );
1276     pACB->sel_timeout = SEL_TIMEOUT;
1277     pACB->glitch_cfg = EATER_25NS;
1278     pACB->Cmds = pACB->CmdInQ = pACB->CmdOutOfSRB = 0;
1279     pACB->SelLost = pACB->SelConn = 0;
1280     init_timer (&pACB->Waiting_Timer);
1281 }
1282
1283
1284 /***********************************************************************
1285  * Function : static int dc390_initAdapter ()
1286  *
1287  * Purpose :  initialize the SCSI chip ctrl registers
1288  *
1289  * Inputs : psh - pointer to this host adapter's structure
1290  *          io_port, Irq, index: Resources
1291  *
1292  * Outputs: 0 on success, -1 on error
1293  ***********************************************************************/
1294
1295 static int __devinit dc390_initAdapter (struct Scsi_Host *psh, unsigned long io_port, u8 Irq, u8 index)
1296 {
1297     struct dc390_acb *pACB, *pACB2;
1298     u8  dstate;
1299     int    i;
1300
1301     pACB = (struct dc390_acb*) psh->hostdata;
1302
1303     if (request_region (io_port, psh->n_io_port, "tmscsim") == NULL) {
1304         printk(KERN_ERR "DC390: register IO ports error!\n");
1305         return( -1 );
1306     }
1307
1308     DC390_read8_ (INT_Status, io_port);         /* Reset Pending INT */
1309
1310     if( (i = request_irq(Irq, do_DC390_Interrupt, DC390_IRQ, "tmscsim", pACB) ))
1311       {
1312         printk(KERN_ERR "DC390: register IRQ error!\n");
1313         release_region (io_port, psh->n_io_port);
1314         return( -1 );
1315       }
1316
1317     if( !dc390_pACB_start )
1318       {
1319         pACB2 = NULL;
1320         dc390_pACB_start = pACB;
1321         dc390_pACB_current = pACB;
1322         pACB->pNextACB = NULL;
1323       }
1324     else
1325       {
1326         pACB2 = dc390_pACB_current;
1327         dc390_pACB_current->pNextACB = pACB;
1328         dc390_pACB_current = pACB;
1329         pACB->pNextACB = NULL;
1330       }
1331
1332     DC390_write8 (CtrlReg1, DIS_INT_ON_SCSI_RST | psh->this_id);        /* Disable SCSI bus reset interrupt */
1333
1334     if (pACB->Gmode2 & RST_SCSI_BUS)
1335     {
1336         dc390_ResetSCSIBus( pACB );
1337         udelay (1000);
1338         pACB->pScsiHost->last_reset = jiffies + HZ/2
1339                     + HZ * dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY];
1340         /*
1341         for( i=0; i<(500 + 1000*dc390_eepromBuf[pACB->AdapterIndex][EE_DELAY]); i++ )
1342                 udelay(1000);
1343          */
1344     }
1345     pACB->ACBFlag = 0;
1346     DC390_read8 (INT_Status);                           /* Reset Pending INT */
1347
1348     DC390_write8 (Scsi_TimeOut, SEL_TIMEOUT);           /* 250ms selection timeout */
1349     DC390_write8 (Clk_Factor, CLK_FREQ_40MHZ);          /* Conversion factor = 0 , 40MHz clock */
1350     DC390_write8 (ScsiCmd, NOP_CMD);                    /* NOP cmd - clear command register */
1351     DC390_write8 (CtrlReg2, EN_FEATURE+EN_SCSI2_CMD);   /* Enable Feature and SCSI-2 */
1352     DC390_write8 (CtrlReg3, FAST_CLK);                  /* fast clock */
1353     DC390_write8 (CtrlReg4, pACB->glitch_cfg |                  /* glitch eater */
1354                 (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION) ? NEGATE_REQACKDATA : 0);  /* Negation */
1355     DC390_write8 (CtcReg_High, 0);                      /* Clear Transfer Count High: ID */
1356     DC390_write8 (DMA_Cmd, DMA_IDLE_CMD);
1357     DC390_write8 (ScsiCmd, CLEAR_FIFO_CMD);
1358     DC390_write32 (DMA_ScsiBusCtrl, EN_INT_ON_PCI_ABORT);
1359     dstate = DC390_read8 (DMA_Status);
1360     DC390_write8 (DMA_Status, dstate);  /* clear */
1361
1362     return(0);
1363 }
1364
1365
1366 static void __devinit dc390_set_pci_cfg (struct pci_dev *pdev)
1367 {
1368         u16 cmd;
1369
1370         pci_read_config_word(pdev, PCI_COMMAND, &cmd);
1371         cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY | PCI_COMMAND_IO;
1372         pci_write_config_word(pdev, PCI_COMMAND, cmd);
1373         pci_write_config_word(pdev, PCI_STATUS, (PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_DETECTED_PARITY));
1374 }
1375
1376 /**
1377  * dc390_slave_alloc - Called by the scsi mid layer to tell us about a new
1378  * scsi device that we need to deal with.
1379  *
1380  * @scsi_device: The new scsi device that we need to handle.
1381  */
1382 static int dc390_slave_alloc(struct scsi_device *scsi_device)
1383 {
1384         struct dc390_acb *pACB = (struct dc390_acb*) scsi_device->host->hostdata;
1385         struct dc390_dcb *pDCB, *pDCB2 = NULL;
1386         uint id = scsi_device->id;
1387         uint lun = scsi_device->lun;
1388
1389         pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
1390         if (!pDCB)
1391                 return -ENOMEM;
1392         memset(pDCB, 0, sizeof(struct dc390_dcb));
1393
1394         if (!pACB->DCBCnt++) {
1395                 pACB->pLinkDCB = pDCB;
1396                 pACB->pDCBRunRobin = pDCB;
1397         } else {
1398                 pACB->pLastDCB->pNextDCB = pDCB;
1399         }
1400
1401         pDCB->pNextDCB = pACB->pLinkDCB;
1402         pACB->pLastDCB = pDCB;
1403
1404         pDCB->pDCBACB = pACB;
1405         pDCB->TargetID = id;
1406         pDCB->TargetLUN = lun;
1407         pDCB->MaxCommand = 1;
1408
1409         /*
1410          * Some values are for all LUNs: Copy them
1411          * In a clean way: We would have an own structure for a SCSI-ID
1412          */
1413         if (lun && (pDCB2 = dc390_findDCB(pACB, id, 0))) {
1414                 pDCB->DevMode = pDCB2->DevMode;
1415                 pDCB->SyncMode = pDCB2->SyncMode;
1416                 pDCB->SyncPeriod = pDCB2->SyncPeriod;
1417                 pDCB->SyncOffset = pDCB2->SyncOffset;
1418                 pDCB->NegoPeriod = pDCB2->NegoPeriod;
1419
1420                 pDCB->CtrlR3 = pDCB2->CtrlR3;
1421                 pDCB->CtrlR4 = pDCB2->CtrlR4;
1422                 pDCB->Inquiry7 = pDCB2->Inquiry7;
1423         } else {
1424                 u8 index = pACB->AdapterIndex;
1425                 PEEprom prom = (PEEprom) &dc390_eepromBuf[index][id << 2];
1426
1427                 pDCB->DevMode = prom->EE_MODE1;
1428                 pDCB->NegoPeriod =
1429                         (dc390_clock_period1[prom->EE_SPEED] * 25) >> 2;
1430                 pDCB->CtrlR3 = FAST_CLK;
1431                 pDCB->CtrlR4 = pACB->glitch_cfg | CTRL4_RESERVED;
1432                 if (dc390_eepromBuf[index][EE_MODE2] & ACTIVE_NEGATION)
1433                         pDCB->CtrlR4 |= NEGATE_REQACKDATA | NEGATE_REQACK;
1434         }
1435
1436         dc390_updateDCB(pACB, pDCB);
1437
1438         pACB->scan_devices = 1;
1439         scsi_device->hostdata = pDCB;
1440         return 0;
1441 }
1442
1443 /**
1444  * dc390_slave_destroy - Called by the scsi mid layer to tell us about a
1445  * device that is going away.
1446  *
1447  * @scsi_device: The scsi device that we need to remove.
1448  */
1449 static void dc390_slave_destroy(struct scsi_device *scsi_device)
1450 {
1451         struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
1452         struct dc390_dcb* pDCB = (struct dc390_dcb*) scsi_device->hostdata;
1453         struct dc390_dcb* pPrevDCB = pACB->pLinkDCB;
1454
1455         pACB->scan_devices = 0;
1456
1457         BUG_ON(pDCB->GoingSRBCnt > 1);
1458
1459         if (pDCB == pACB->pLinkDCB) {
1460                 if (pACB->pLastDCB == pDCB) {
1461                         pDCB->pNextDCB = NULL;
1462                         pACB->pLastDCB = NULL;
1463                 }
1464                 pACB->pLinkDCB = pDCB->pNextDCB;
1465         } else {
1466                 while (pPrevDCB->pNextDCB != pDCB)
1467                         pPrevDCB = pPrevDCB->pNextDCB;
1468                 pPrevDCB->pNextDCB = pDCB->pNextDCB;
1469                 if (pDCB == pACB->pLastDCB)
1470                         pACB->pLastDCB = pPrevDCB;
1471         }
1472
1473         if (pDCB == pACB->pActiveDCB)
1474                 pACB->pActiveDCB = NULL;
1475         if (pDCB == pACB->pLinkDCB)
1476                 pACB->pLinkDCB = pDCB->pNextDCB;
1477         if (pDCB == pACB->pDCBRunRobin)
1478                 pACB->pDCBRunRobin = pDCB->pNextDCB;
1479         kfree(pDCB);
1480
1481         pACB->DCBCnt--;
1482 }
1483
1484 static int dc390_slave_configure(struct scsi_device *scsi_device)
1485 {
1486         struct dc390_acb* pACB = (struct dc390_acb*) scsi_device->host->hostdata;
1487         pACB->scan_devices = 0;
1488         return 0;
1489 }
1490
1491 static struct scsi_host_template driver_template = {
1492         .module                 = THIS_MODULE,
1493         .proc_name              = "tmscsim",
1494         .name                   = DC390_BANNER " V" DC390_VERSION,
1495         .slave_alloc            = dc390_slave_alloc,
1496         .slave_configure        = dc390_slave_configure,
1497         .slave_destroy          = dc390_slave_destroy,
1498         .queuecommand           = DC390_queue_command,
1499         .eh_abort_handler       = DC390_abort,
1500         .eh_bus_reset_handler   = DC390_bus_reset,
1501         .can_queue              = 42,
1502         .this_id                = 7,
1503         .sg_tablesize           = SG_ALL,
1504         .cmd_per_lun            = 16,
1505         .use_clustering         = DISABLE_CLUSTERING,
1506 };
1507
1508 static int __devinit dc390_init_one(struct pci_dev *dev,
1509                                     const struct pci_device_id *id)
1510 {
1511         struct Scsi_Host *scsi_host;
1512         unsigned long io_port;
1513         u8 irq;
1514         struct dc390_acb*  pACB;
1515         int ret = -ENOMEM;
1516
1517         if (pci_enable_device(dev))
1518                 return -ENODEV;
1519
1520         io_port = pci_resource_start(dev, 0);
1521         irq = dev->irq;
1522
1523         /* allocate scsi host information (includes out adapter) */
1524         scsi_host = scsi_host_alloc(&driver_template, sizeof(struct dc390_acb));
1525         if (!scsi_host)
1526                 goto nomem;
1527
1528         pACB = (struct dc390_acb*) scsi_host->hostdata;
1529
1530         if (dc390_CheckEEpromCheckSum (dev, dc390_adapterCnt)) {
1531                 int speed;
1532                 dc390_adapname = "AM53C974";
1533                 printk(KERN_INFO "DC390_init: No EEPROM found! Trying default settings ...\n");
1534                 dc390_check_for_safe_settings();
1535                 dc390_fill_with_defaults();
1536                 dc390_EEprom_Override(dc390_adapterCnt);
1537                 speed = dc390_clock_speed[tmscsim[1]];
1538                 printk(KERN_INFO "DC390: Used defaults: AdaptID=%i, SpeedIdx=%i (%i.%i MHz),"
1539                        " DevMode=0x%02x, AdaptMode=0x%02x, TaggedCmnds=%i (%i), DelayReset=%is\n",
1540                        tmscsim[0], tmscsim[1], speed/10, speed%10,
1541                        (u8)tmscsim[2], (u8)tmscsim[3], tmscsim[4], 2 << (tmscsim[4]), tmscsim[5]);
1542         } else {
1543                 dc390_check_for_safe_settings();
1544                 dc390_EEprom_Override(dc390_adapterCnt);
1545         }
1546
1547         DEBUG0(printk(KERN_INFO "DC390: pSH = %8x, Index %02i\n", (u32) scsi_host, dc390_adapterCnt));
1548
1549         dc390_initACB(scsi_host, io_port, irq, dc390_adapterCnt);
1550
1551         pACB->pdev = dev;
1552
1553         if (dc390_initAdapter(scsi_host, io_port, irq, dc390_adapterCnt)) {
1554                 scsi_unregister(scsi_host);
1555                 ret = -EBUSY;
1556                 goto busy;
1557         }
1558
1559         pci_set_master(dev);
1560         dc390_set_pci_cfg(dev);
1561         dc390_adapterCnt++;
1562
1563         /* get the scsi mid level to scan for new devices on the bus */
1564         if (scsi_add_host(scsi_host, &dev->dev)) {
1565                 ret = -ENODEV;
1566                 goto nodev;
1567         }
1568         pci_set_drvdata(dev, scsi_host);
1569         scsi_scan_host(scsi_host);
1570
1571         return 0;
1572
1573 nodev:
1574 busy:
1575         scsi_host_put(scsi_host);
1576 nomem:
1577         pci_disable_device(dev);
1578         return ret;
1579 }
1580
1581 /**
1582  * dc390_remove_one - Called to remove a single instance of the adapter.
1583  *
1584  * @dev: The PCI device to remove.
1585  */
1586 static void __devexit dc390_remove_one(struct pci_dev *dev)
1587 {
1588         struct Scsi_Host *scsi_host = pci_get_drvdata(dev);
1589         unsigned long iflags;
1590         struct dc390_acb* pACB = (struct dc390_acb*) scsi_host->hostdata;
1591         u8 bval;
1592
1593         scsi_remove_host(scsi_host);
1594
1595         spin_lock_irqsave(scsi_host->host_lock, iflags);
1596         pACB->ACBFlag = RESET_DEV;
1597         bval = DC390_read8(CtrlReg1) | DIS_INT_ON_SCSI_RST;
1598         DC390_write8 (CtrlReg1, bval);  /* disable interrupt */
1599         if (pACB->Gmode2 & RST_SCSI_BUS)
1600                 dc390_ResetSCSIBus(pACB);
1601         spin_unlock_irqrestore(scsi_host->host_lock, iflags);
1602
1603         del_timer_sync(&pACB->Waiting_Timer);
1604
1605         free_irq(scsi_host->irq, pACB);
1606         release_region(scsi_host->io_port, scsi_host->n_io_port);
1607
1608         pci_disable_device(dev);
1609         scsi_host_put(scsi_host);
1610         pci_set_drvdata(dev, NULL);
1611 }
1612
1613 static struct pci_driver dc390_driver = {
1614         .name           = "tmscsim",
1615         .id_table       = tmscsim_pci_tbl,
1616         .probe          = dc390_init_one,
1617         .remove         = __devexit_p(dc390_remove_one),
1618 };
1619
1620 static int __init dc390_module_init(void)
1621 {
1622         return pci_module_init(&dc390_driver);
1623 }
1624
1625 static void __exit dc390_module_exit(void)
1626 {
1627         pci_unregister_driver(&dc390_driver);
1628 }
1629
1630 module_init(dc390_module_init);
1631 module_exit(dc390_module_exit);