git.oblomov.eu Git - linux-2.6/blob - drivers/scsi/initio.c

   1 /**************************************************************************
   2  * Initio 9100 device driver for Linux.
   3  *
   4  * Copyright (c) 1994-1998 Initio Corporation
   5  * Copyright (c) 1998 Bas Vermeulen <bvermeul@blackstar.xs4all.nl>
   6  * All rights reserved.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2, or (at your option)
  11  * any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; see the file COPYING.  If not, write to
  20  * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  * --------------------------------------------------------------------------
  23  *
  24  * Redistribution and use in source and binary forms, with or without
  25  * modification, are permitted provided that the following conditions
  26  * are met:
  27  * 1. Redistributions of source code must retain the above copyright
  28  *    notice, this list of conditions, and the following disclaimer,
  29  *    without modification, immediately at the beginning of the file.
  30  * 2. Redistributions in binary form must reproduce the above copyright
  31  *    notice, this list of conditions and the following disclaimer in the
  32  *    documentation and/or other materials provided with the distribution.
  33  * 3. The name of the author may not be used to endorse or promote products
  34  *    derived from this software without specific prior written permission.
  35  *
  36  * Where this Software is combined with software released under the terms of
  37  * the GNU General Public License ("GPL") and the terms of the GPL would require the
  38  * combined work to also be released under the terms of the GPL, the terms
  39  * and conditions of this License will apply in addition to those of the
  40  * GPL with the exception of any terms or conditions of this License that
  41  * conflict with, or are expressly prohibited by, the GPL.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  47  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  *
  55  *************************************************************************
  56  *
  57  * DESCRIPTION:
  58  *
  59  * This is the Linux low-level SCSI driver for Initio INI-9X00U/UW SCSI host
  60  * adapters
  61  *
  62  * 08/06/97 hc  - v1.01h
  63  *              - Support inic-940 and inic-935
  64  * 09/26/97 hc  - v1.01i
  65  *              - Make correction from J.W. Schultz suggestion
  66  * 10/13/97 hc  - Support reset function
  67  * 10/21/97 hc  - v1.01j
  68  *              - Support 32 LUN (SCSI 3)
  69  * 01/14/98 hc  - v1.01k
  70  *              - Fix memory allocation problem
  71  * 03/04/98 hc  - v1.01l
  72  *              - Fix tape rewind which will hang the system problem
  73  *              - Set can_queue to tul_num_scb
  74  * 06/25/98 hc  - v1.01m
  75  *              - Get it work for kernel version >= 2.1.75
  76  *              - Dynamic assign SCSI bus reset holding time in init_tulip()
  77  * 07/02/98 hc  - v1.01n
  78  *              - Support 0002134A
  79  * 08/07/98 hc  - v1.01o
  80  *              - Change the tul_abort_srb routine to use scsi_done. <01>
  81  * 09/07/98 hl  - v1.02
  82  *              - Change the INI9100U define and proc_dir_entry to
  83  *                reflect the newer Kernel 2.1.118, but the v1.o1o
  84  *                should work with Kernel 2.1.118.
  85  * 09/20/98 wh  - v1.02a
  86  *              - Support Abort command.
  87  *              - Handle reset routine.
  88  * 09/21/98 hl  - v1.03
  89  *              - remove comments.
  90  * 12/09/98 bv  - v1.03a
  91  *              - Removed unused code
  92  * 12/13/98 bv  - v1.03b
  93  *              - Remove cli() locking for kernels >= 2.1.95. This uses
  94  *                spinlocks to serialize access to the pSRB_head and
  95  *                pSRB_tail members of the HCS structure.
  96  * 09/01/99 bv  - v1.03d
  97  *              - Fixed a deadlock problem in SMP.
  98  * 21/01/99 bv  - v1.03e
  99  *              - Add support for the Domex 3192U PCI SCSI
 100  *                This is a slightly modified patch by
 101  *                Brian Macy <bmacy@sunshinecomputing.com>
 102  * 22/02/99 bv  - v1.03f
 103  *              - Didn't detect the INIC-950 in 2.0.x correctly.
 104  *                Now fixed.
 105  * 05/07/99 bv  - v1.03g
 106  *              - Changed the assumption that HZ = 100
 107  * 10/17/03 mc  - v1.04
 108  *              - added new DMA API support
 109  * 06/01/04 jmd - v1.04a
 110  *              - Re-add reset_bus support
 111  **************************************************************************/
 112
 113 #include <linux/module.h>
 114 #include <linux/errno.h>
 115 #include <linux/delay.h>
 116 #include <linux/pci.h>
 117 #include <linux/init.h>
 118 #include <linux/blkdev.h>
 119 #include <linux/spinlock.h>
 120 #include <linux/stat.h>
 121 #include <linux/config.h>
 122 #include <linux/kernel.h>
 123 #include <linux/proc_fs.h>
 124 #include <linux/string.h>
 125 #include <linux/interrupt.h>
 126 #include <linux/ioport.h>
 127 #include <linux/sched.h>
 128 #include <linux/slab.h>
 129 #include <linux/jiffies.h>
 130 #include <linux/dma-mapping.h>
 131 #include <asm/io.h>
 132
 133 #include <scsi/scsi.h>
 134 #include <scsi/scsi_cmnd.h>
 135 #include <scsi/scsi_device.h>
 136 #include <scsi/scsi_host.h>
 137 #include <scsi/scsi_tcq.h>
 138
 139 #include "initio.h"
 140
 141 #define SENSE_SIZE              14
 142
 143 #define i91u_MAXQUEUE           2
 144 #define i91u_REVID "Initio INI-9X00U/UW SCSI device driver; Revision: 1.04a"
 145
 146 #define INI_VENDOR_ID   0x1101  /* Initio's PCI vendor ID       */
 147 #define DMX_VENDOR_ID   0x134a  /* Domex's PCI vendor ID        */
 148 #define I950_DEVICE_ID  0x9500  /* Initio's inic-950 product ID   */
 149 #define I940_DEVICE_ID  0x9400  /* Initio's inic-940 product ID   */
 150 #define I935_DEVICE_ID  0x9401  /* Initio's inic-935 product ID   */
 151 #define I920_DEVICE_ID  0x0002  /* Initio's other product ID      */
 152
 153 #ifdef DEBUG_i91u
 154 static unsigned int i91u_debug = DEBUG_DEFAULT;
 155 #endif
 156
 157 #define TULSZ(sz)     (sizeof(sz) / sizeof(sz[0]))
 158 #define TUL_RDWORD(x,y)         (short)(inl((int)((ULONG)((ULONG)x+(UCHAR)y)) ))
 159
 160 typedef struct PCI_ID_Struc {
 161         unsigned short vendor_id;
 162         unsigned short device_id;
 163 } PCI_ID;
 164
 165 static int tul_num_ch = 4;      /* Maximum 4 adapters           */
 166 static int tul_num_scb;
 167 static int tul_tag_enable = 1;
 168 static SCB *tul_scb;
 169
 170 #ifdef DEBUG_i91u
 171 static int setup_debug = 0;
 172 #endif
 173
 174 static void i91uSCBPost(BYTE * pHcb, BYTE * pScb);
 175
 176 static const PCI_ID i91u_pci_devices[] = {
 177         { INI_VENDOR_ID, I950_DEVICE_ID },
 178         { INI_VENDOR_ID, I940_DEVICE_ID },
 179         { INI_VENDOR_ID, I935_DEVICE_ID },
 180         { INI_VENDOR_ID, I920_DEVICE_ID },
 181         { DMX_VENDOR_ID, I920_DEVICE_ID },
 182 };
 183
 184 #define DEBUG_INTERRUPT 0
 185 #define DEBUG_QUEUE     0
 186 #define DEBUG_STATE     0
 187 #define INT_DISC        0
 188
 189 /*--- external functions --*/
 190 static void tul_se2_wait(void);
 191
 192 /*--- forward refrence ---*/
 193 static SCB *tul_find_busy_scb(HCS * pCurHcb, WORD tarlun);
 194 static SCB *tul_find_done_scb(HCS * pCurHcb);
 195
 196 static int tulip_main(HCS * pCurHcb);
 197
 198 static int tul_next_state(HCS * pCurHcb);
 199 static int tul_state_1(HCS * pCurHcb);
 200 static int tul_state_2(HCS * pCurHcb);
 201 static int tul_state_3(HCS * pCurHcb);
 202 static int tul_state_4(HCS * pCurHcb);
 203 static int tul_state_5(HCS * pCurHcb);
 204 static int tul_state_6(HCS * pCurHcb);
 205 static int tul_state_7(HCS * pCurHcb);
 206 static int tul_xfer_data_in(HCS * pCurHcb);
 207 static int tul_xfer_data_out(HCS * pCurHcb);
 208 static int tul_xpad_in(HCS * pCurHcb);
 209 static int tul_xpad_out(HCS * pCurHcb);
 210 static int tul_status_msg(HCS * pCurHcb);
 211
 212 static int tul_msgin(HCS * pCurHcb);
 213 static int tul_msgin_sync(HCS * pCurHcb);
 214 static int tul_msgin_accept(HCS * pCurHcb);
 215 static int tul_msgout_reject(HCS * pCurHcb);
 216 static int tul_msgin_extend(HCS * pCurHcb);
 217
 218 static int tul_msgout_ide(HCS * pCurHcb);
 219 static int tul_msgout_abort_targ(HCS * pCurHcb);
 220 static int tul_msgout_abort_tag(HCS * pCurHcb);
 221
 222 static int tul_bus_device_reset(HCS * pCurHcb);
 223 static void tul_select_atn(HCS * pCurHcb, SCB * pCurScb);
 224 static void tul_select_atn3(HCS * pCurHcb, SCB * pCurScb);
 225 static void tul_select_atn_stop(HCS * pCurHcb, SCB * pCurScb);
 226 static int int_tul_busfree(HCS * pCurHcb);
 227 static int int_tul_scsi_rst(HCS * pCurHcb);
 228 static int int_tul_bad_seq(HCS * pCurHcb);
 229 static int int_tul_resel(HCS * pCurHcb);
 230 static int tul_sync_done(HCS * pCurHcb);
 231 static int wdtr_done(HCS * pCurHcb);
 232 static int wait_tulip(HCS * pCurHcb);
 233 static int tul_wait_done_disc(HCS * pCurHcb);
 234 static int tul_wait_disc(HCS * pCurHcb);
 235 static void tulip_scsi(HCS * pCurHcb);
 236 static int tul_post_scsi_rst(HCS * pCurHcb);
 237
 238 static void tul_se2_ew_en(WORD CurBase);
 239 static void tul_se2_ew_ds(WORD CurBase);
 240 static int tul_se2_rd_all(WORD CurBase);
 241 static void tul_se2_update_all(WORD CurBase);   /* setup default pattern */
 242 static void tul_read_eeprom(WORD CurBase);
 243
 244                                 /* ---- INTERNAL VARIABLES ---- */
 245 static HCS tul_hcs[MAX_SUPPORTED_ADAPTERS];
 246 static INI_ADPT_STRUCT i91u_adpt[MAX_SUPPORTED_ADAPTERS];
 247
 248 /*NVRAM nvram, *nvramp = &nvram; */
 249 static NVRAM i91unvram;
 250 static NVRAM *i91unvramp;
 251
 252
 253
 254 static UCHAR i91udftNvRam[64] =
 255 {
 256 /*----------- header -----------*/
 257         0x25, 0xc9,             /* Signature    */
 258         0x40,                   /* Size         */
 259         0x01,                   /* Revision     */
 260         /* -- Host Adapter Structure -- */
 261         0x95,                   /* ModelByte0   */
 262         0x00,                   /* ModelByte1   */
 263         0x00,                   /* ModelInfo    */
 264         0x01,                   /* NumOfCh      */
 265         NBC1_DEFAULT,           /* BIOSConfig1  */
 266         0,                      /* BIOSConfig2  */
 267         0,                      /* HAConfig1    */
 268         0,                      /* HAConfig2    */
 269         /* SCSI channel 0 and target Structure  */
 270         7,                      /* SCSIid       */
 271         NCC1_DEFAULT,           /* SCSIconfig1  */
 272         0,                      /* SCSIconfig2  */
 273         0x10,                   /* NumSCSItarget */
 274
 275         NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
 276         NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
 277         NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
 278         NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
 279
 280         /* SCSI channel 1 and target Structure  */
 281         7,                      /* SCSIid       */
 282         NCC1_DEFAULT,           /* SCSIconfig1  */
 283         0,                      /* SCSIconfig2  */
 284         0x10,                   /* NumSCSItarget */
 285
 286         NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
 287         NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
 288         NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
 289         NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
 290         0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 291         0, 0};                  /*      - CheckSum -            */
 292
 293
 294 static UCHAR tul_rate_tbl[8] =  /* fast 20      */
 295 {
 296                                 /* nanosecond devide by 4 */
 297         12,                     /* 50ns,  20M   */
 298         18,                     /* 75ns,  13.3M */
 299         25,                     /* 100ns, 10M   */
 300         31,                     /* 125ns, 8M    */
 301         37,                     /* 150ns, 6.6M  */
 302         43,                     /* 175ns, 5.7M  */
 303         50,                     /* 200ns, 5M    */
 304         62                      /* 250ns, 4M    */
 305 };
 306
 307 static void tul_do_pause(unsigned amount)
 308 {                               /* Pause for amount jiffies */
 309         unsigned long the_time = jiffies + amount;
 310
 311         while (time_before_eq(jiffies, the_time));
 312 }
 313
 314 /*-- forward reference --*/
 315
 316 /*******************************************************************
 317         Use memeory refresh time        ~ 15us * 2
 318 ********************************************************************/
 319 void tul_se2_wait(void)
 320 {
 321 #if 1
 322         udelay(30);
 323 #else
 324         UCHAR readByte;
 325
 326         readByte = TUL_RD(0, 0x61);
 327         if ((readByte & 0x10) == 0x10) {
 328                 for (;;) {
 329                         readByte = TUL_RD(0, 0x61);
 330                         if ((readByte & 0x10) == 0x10)
 331                                 break;
 332                 }
 333                 for (;;) {
 334                         readByte = TUL_RD(0, 0x61);
 335                         if ((readByte & 0x10) != 0x10)
 336                                 break;
 337                 }
 338         } else {
 339                 for (;;) {
 340                         readByte = TUL_RD(0, 0x61);
 341                         if ((readByte & 0x10) == 0x10)
 342                                 break;
 343                 }
 344                 for (;;) {
 345                         readByte = TUL_RD(0, 0x61);
 346                         if ((readByte & 0x10) != 0x10)
 347                                 break;
 348                 }
 349         }
 350 #endif
 351 }
 352
 353
 354 /******************************************************************
 355  Input: instruction for  Serial E2PROM
 356
 357  EX: se2_rd(0 call se2_instr() to send address and read command
 358
 359          StartBit  OP_Code   Address                Data
 360          --------- --------  ------------------     -------
 361          1         1 , 0     A5,A4,A3,A2,A1,A0      D15-D0
 362
 363                  +-----------------------------------------------------
 364                  |
 365  CS -----+
 366                         +--+  +--+  +--+  +--+  +--+
 367                         ^  |  ^  |  ^  |  ^  |  ^  |
 368                         |  |  |  |  |  |  |  |  |  |
 369  CLK -------+  +--+  +--+  +--+  +--+  +--
 370  (leading edge trigger)
 371
 372                  +--1-----1--+
 373                  | SB    OP  |  OP    A5    A4
 374  DI  ----+           +--0------------------
 375  (address and cmd sent to nvram)
 376
 377          -------------------------------------------+
 378                                                                                                 |
 379  DO                                             +---
 380  (data sent from nvram)
 381
 382
 383 ******************************************************************/
 384 static void tul_se2_instr(WORD CurBase, UCHAR instr)
 385 {
 386         int i;
 387         UCHAR b;
 388
 389         TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2DO);     /* cs+start bit */
 390         tul_se2_wait();
 391         TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK | SE2DO);    /* +CLK */
 392         tul_se2_wait();
 393
 394         for (i = 0; i < 8; i++) {
 395                 if (instr & 0x80)
 396                         b = SE2CS | SE2DO;      /* -CLK+dataBit */
 397                 else
 398                         b = SE2CS;      /* -CLK */
 399                 TUL_WR(CurBase + TUL_NVRAM, b);
 400                 tul_se2_wait();
 401                 TUL_WR(CurBase + TUL_NVRAM, b | SE2CLK);        /* +CLK */
 402                 tul_se2_wait();
 403                 instr <<= 1;
 404         }
 405         TUL_WR(CurBase + TUL_NVRAM, SE2CS);     /* -CLK */
 406         tul_se2_wait();
 407         return;
 408 }
 409
 410
 411 /******************************************************************
 412  Function name  : tul_se2_ew_en
 413  Description    : Enable erase/write state of serial EEPROM
 414 ******************************************************************/
 415 void tul_se2_ew_en(WORD CurBase)
 416 {
 417         tul_se2_instr(CurBase, 0x30);   /* EWEN */
 418         TUL_WR(CurBase + TUL_NVRAM, 0);         /* -CS  */
 419         tul_se2_wait();
 420         return;
 421 }
 422
 423
 424 /************************************************************************
 425  Disable erase/write state of serial EEPROM
 426 *************************************************************************/
 427 void tul_se2_ew_ds(WORD CurBase)
 428 {
 429         tul_se2_instr(CurBase, 0);      /* EWDS */
 430         TUL_WR(CurBase + TUL_NVRAM, 0);         /* -CS  */
 431         tul_se2_wait();
 432         return;
 433 }
 434
 435
 436 /******************************************************************
 437         Input  :address of Serial E2PROM
 438         Output :value stored in  Serial E2PROM
 439 *******************************************************************/
 440 static USHORT tul_se2_rd(WORD CurBase, ULONG adr)
 441 {
 442         UCHAR instr, readByte;
 443         USHORT readWord;
 444         int i;
 445
 446         instr = (UCHAR) (adr | 0x80);
 447         tul_se2_instr(CurBase, instr);  /* READ INSTR */
 448         readWord = 0;
 449
 450         for (i = 15; i >= 0; i--) {
 451                 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK);    /* +CLK */
 452                 tul_se2_wait();
 453                 TUL_WR(CurBase + TUL_NVRAM, SE2CS);     /* -CLK */
 454
 455                 /* sample data after the following edge of clock  */
 456                 readByte = TUL_RD(CurBase, TUL_NVRAM);
 457                 readByte &= SE2DI;
 458                 readWord += (readByte << i);
 459                 tul_se2_wait(); /* 6/20/95 */
 460         }
 461
 462         TUL_WR(CurBase + TUL_NVRAM, 0);         /* no chip select */
 463         tul_se2_wait();
 464         return readWord;
 465 }
 466
 467
 468 /******************************************************************
 469  Input: new value in  Serial E2PROM, address of Serial E2PROM
 470 *******************************************************************/
 471 static void tul_se2_wr(WORD CurBase, UCHAR adr, USHORT writeWord)
 472 {
 473         UCHAR readByte;
 474         UCHAR instr;
 475         int i;
 476
 477         instr = (UCHAR) (adr | 0x40);
 478         tul_se2_instr(CurBase, instr);  /* WRITE INSTR */
 479         for (i = 15; i >= 0; i--) {
 480                 if (writeWord & 0x8000)
 481                         TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2DO);     /* -CLK+dataBit 1 */
 482                 else
 483                         TUL_WR(CurBase + TUL_NVRAM, SE2CS);     /* -CLK+dataBit 0 */
 484                 tul_se2_wait();
 485                 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK);    /* +CLK */
 486                 tul_se2_wait();
 487                 writeWord <<= 1;
 488         }
 489         TUL_WR(CurBase + TUL_NVRAM, SE2CS);     /* -CLK */
 490         tul_se2_wait();
 491         TUL_WR(CurBase + TUL_NVRAM, 0);         /* -CS  */
 492         tul_se2_wait();
 493
 494         TUL_WR(CurBase + TUL_NVRAM, SE2CS);     /* +CS  */
 495         tul_se2_wait();
 496
 497         for (;;) {
 498                 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK);    /* +CLK */
 499                 tul_se2_wait();
 500                 TUL_WR(CurBase + TUL_NVRAM, SE2CS);     /* -CLK */
 501                 tul_se2_wait();
 502                 if ((readByte = TUL_RD(CurBase, TUL_NVRAM)) & SE2DI)
 503                         break;  /* write complete */
 504         }
 505         TUL_WR(CurBase + TUL_NVRAM, 0);         /* -CS */
 506         return;
 507 }
 508
 509
 510 /***********************************************************************
 511  Read SCSI H/A configuration parameters from serial EEPROM
 512 ************************************************************************/
 513 int tul_se2_rd_all(WORD CurBase)
 514 {
 515         int i;
 516         ULONG chksum = 0;
 517         USHORT *np;
 518
 519         i91unvramp = &i91unvram;
 520         np = (USHORT *) i91unvramp;
 521         for (i = 0; i < 32; i++) {
 522                 *np++ = tul_se2_rd(CurBase, i);
 523         }
 524
 525 /*--------------------Is signature "ini" ok ? ----------------*/
 526         if (i91unvramp->NVM_Signature != INI_SIGNATURE)
 527                 return -1;
 528 /*---------------------- Is ckecksum ok ? ----------------------*/
 529         np = (USHORT *) i91unvramp;
 530         for (i = 0; i < 31; i++)
 531                 chksum += *np++;
 532         if (i91unvramp->NVM_CheckSum != (USHORT) chksum)
 533                 return -1;
 534         return 1;
 535 }
 536
 537
 538 /***********************************************************************
 539  Update SCSI H/A configuration parameters from serial EEPROM
 540 ************************************************************************/
 541 void tul_se2_update_all(WORD CurBase)
 542 {                               /* setup default pattern */
 543         int i;
 544         ULONG chksum = 0;
 545         USHORT *np, *np1;
 546
 547         i91unvramp = &i91unvram;
 548         /* Calculate checksum first */
 549         np = (USHORT *) i91udftNvRam;
 550         for (i = 0; i < 31; i++)
 551                 chksum += *np++;
 552         *np = (USHORT) chksum;
 553         tul_se2_ew_en(CurBase); /* Enable write  */
 554
 555         np = (USHORT *) i91udftNvRam;
 556         np1 = (USHORT *) i91unvramp;
 557         for (i = 0; i < 32; i++, np++, np1++) {
 558                 if (*np != *np1) {
 559                         tul_se2_wr(CurBase, i, *np);
 560                 }
 561         }
 562
 563         tul_se2_ew_ds(CurBase); /* Disable write   */
 564         return;
 565 }
 566
 567 /*************************************************************************
 568  Function name  : read_eeprom
 569 **************************************************************************/
 570 void tul_read_eeprom(WORD CurBase)
 571 {
 572         UCHAR gctrl;
 573
 574         i91unvramp = &i91unvram;
 575 /*------Enable EEProm programming ---*/
 576         gctrl = TUL_RD(CurBase, TUL_GCTRL);
 577         TUL_WR(CurBase + TUL_GCTRL, gctrl | TUL_GCTRL_EEPROM_BIT);
 578         if (tul_se2_rd_all(CurBase) != 1) {
 579                 tul_se2_update_all(CurBase);    /* setup default pattern */
 580                 tul_se2_rd_all(CurBase);        /* load again  */
 581         }
 582 /*------ Disable EEProm programming ---*/
 583         gctrl = TUL_RD(CurBase, TUL_GCTRL);
 584         TUL_WR(CurBase + TUL_GCTRL, gctrl & ~TUL_GCTRL_EEPROM_BIT);
 585 }                               /* read_eeprom */
 586
 587 static int Addi91u_into_Adapter_table(WORD wBIOS, WORD wBASE, BYTE bInterrupt,
 588                                       BYTE bBus, BYTE bDevice)
 589 {
 590         int i, j;
 591
 592         for (i = 0; i < MAX_SUPPORTED_ADAPTERS; i++) {
 593                 if (i91u_adpt[i].ADPT_BIOS < wBIOS)
 594                         continue;
 595                 if (i91u_adpt[i].ADPT_BIOS == wBIOS) {
 596                         if (i91u_adpt[i].ADPT_BASE == wBASE) {
 597                                 if (i91u_adpt[i].ADPT_Bus != 0xFF)
 598                                         return 1;
 599                         } else if (i91u_adpt[i].ADPT_BASE < wBASE)
 600                                         continue;
 601                 }
 602                 for (j = MAX_SUPPORTED_ADAPTERS - 1; j > i; j--) {
 603                         i91u_adpt[j].ADPT_BASE = i91u_adpt[j - 1].ADPT_BASE;
 604                         i91u_adpt[j].ADPT_INTR = i91u_adpt[j - 1].ADPT_INTR;
 605                         i91u_adpt[j].ADPT_BIOS = i91u_adpt[j - 1].ADPT_BIOS;
 606                         i91u_adpt[j].ADPT_Bus = i91u_adpt[j - 1].ADPT_Bus;
 607                         i91u_adpt[j].ADPT_Device = i91u_adpt[j - 1].ADPT_Device;
 608                 }
 609                 i91u_adpt[i].ADPT_BASE = wBASE;
 610                 i91u_adpt[i].ADPT_INTR = bInterrupt;
 611                 i91u_adpt[i].ADPT_BIOS = wBIOS;
 612                 i91u_adpt[i].ADPT_Bus = bBus;
 613                 i91u_adpt[i].ADPT_Device = bDevice;
 614                 return 0;
 615         }
 616         return 1;
 617 }
 618
 619 static void init_i91uAdapter_table(void)
 620 {
 621         int i;
 622
 623         for (i = 0; i < MAX_SUPPORTED_ADAPTERS; i++) {  /* Initialize adapter structure */
 624                 i91u_adpt[i].ADPT_BIOS = 0xffff;
 625                 i91u_adpt[i].ADPT_BASE = 0xffff;
 626                 i91u_adpt[i].ADPT_INTR = 0xff;
 627                 i91u_adpt[i].ADPT_Bus = 0xff;
 628                 i91u_adpt[i].ADPT_Device = 0xff;
 629         }
 630         return;
 631 }
 632
 633 static void tul_stop_bm(HCS * pCurHcb)
 634 {
 635
 636         if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) {   /* if DMA xfer is pending, abort DMA xfer */
 637                 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT | TAX_X_CLR_FIFO);
 638                 /* wait Abort DMA xfer done */
 639                 while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & XABT) == 0);
 640         }
 641         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
 642 }
 643
 644 /***************************************************************************/
 645 static void get_tulipPCIConfig(HCS * pCurHcb, int ch_idx)
 646 {
 647         pCurHcb->HCS_Base = i91u_adpt[ch_idx].ADPT_BASE;        /* Supply base address  */
 648         pCurHcb->HCS_BIOS = i91u_adpt[ch_idx].ADPT_BIOS;        /* Supply BIOS address  */
 649         pCurHcb->HCS_Intr = i91u_adpt[ch_idx].ADPT_INTR;        /* Supply interrupt line */
 650         return;
 651 }
 652
 653 /***************************************************************************/
 654 static int tul_reset_scsi(HCS * pCurHcb, int seconds)
 655 {
 656         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_RST_BUS);
 657
 658         while (!((pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt)) & TSS_SCSIRST_INT));
 659         /* reset tulip chip */
 660
 661         TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, 0);
 662
 663         /* Stall for a while, wait for target's firmware ready,make it 2 sec ! */
 664         /* SONY 5200 tape drive won't work if only stall for 1 sec */
 665         tul_do_pause(seconds * HZ);
 666
 667         TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
 668
 669         return (SCSI_RESET_SUCCESS);
 670 }
 671
 672 /***************************************************************************/
 673 static int init_tulip(HCS * pCurHcb, SCB * scbp, int tul_num_scb,
 674                       BYTE * pbBiosAdr, int seconds)
 675 {
 676         int i;
 677         BYTE *pwFlags;
 678         BYTE *pbHeads;
 679         SCB *pTmpScb, *pPrevScb = NULL;
 680
 681         pCurHcb->HCS_NumScbs = tul_num_scb;
 682         pCurHcb->HCS_Semaph = 1;
 683         spin_lock_init(&pCurHcb->HCS_SemaphLock);
 684         pCurHcb->HCS_JSStatus0 = 0;
 685         pCurHcb->HCS_Scb = scbp;
 686         pCurHcb->HCS_NxtPend = scbp;
 687         pCurHcb->HCS_NxtAvail = scbp;
 688         for (i = 0, pTmpScb = scbp; i < tul_num_scb; i++, pTmpScb++) {
 689                 pTmpScb->SCB_TagId = i;
 690                 if (i != 0)
 691                         pPrevScb->SCB_NxtScb = pTmpScb;
 692                 pPrevScb = pTmpScb;
 693         }
 694         pPrevScb->SCB_NxtScb = NULL;
 695         pCurHcb->HCS_ScbEnd = pTmpScb;
 696         pCurHcb->HCS_FirstAvail = scbp;
 697         pCurHcb->HCS_LastAvail = pPrevScb;
 698         spin_lock_init(&pCurHcb->HCS_AvailLock);
 699         pCurHcb->HCS_FirstPend = NULL;
 700         pCurHcb->HCS_LastPend = NULL;
 701         pCurHcb->HCS_FirstBusy = NULL;
 702         pCurHcb->HCS_LastBusy = NULL;
 703         pCurHcb->HCS_FirstDone = NULL;
 704         pCurHcb->HCS_LastDone = NULL;
 705         pCurHcb->HCS_ActScb = NULL;
 706         pCurHcb->HCS_ActTcs = NULL;
 707
 708         tul_read_eeprom(pCurHcb->HCS_Base);
 709 /*---------- get H/A configuration -------------*/
 710         if (i91unvramp->NVM_SCSIInfo[0].NVM_NumOfTarg == 8)
 711                 pCurHcb->HCS_MaxTar = 8;
 712         else
 713                 pCurHcb->HCS_MaxTar = 16;
 714
 715         pCurHcb->HCS_Config = i91unvramp->NVM_SCSIInfo[0].NVM_ChConfig1;
 716
 717         pCurHcb->HCS_SCSI_ID = i91unvramp->NVM_SCSIInfo[0].NVM_ChSCSIID;
 718         pCurHcb->HCS_IdMask = ~(1 << pCurHcb->HCS_SCSI_ID);
 719
 720 #ifdef CHK_PARITY
 721         /* Enable parity error response */
 722         TUL_WR(pCurHcb->HCS_Base + TUL_PCMD, TUL_RD(pCurHcb->HCS_Base, TUL_PCMD) | 0x40);
 723 #endif
 724
 725         /* Mask all the interrupt       */
 726         TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
 727
 728         tul_stop_bm(pCurHcb);
 729         /* --- Initialize the tulip --- */
 730         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_RST_CHIP);
 731
 732         /* program HBA's SCSI ID        */
 733         TUL_WR(pCurHcb->HCS_Base + TUL_SScsiId, pCurHcb->HCS_SCSI_ID << 4);
 734
 735         /* Enable Initiator Mode ,phase latch,alternate sync period mode,
 736            disable SCSI reset */
 737         if (pCurHcb->HCS_Config & HCC_EN_PAR)
 738                 pCurHcb->HCS_SConf1 = (TSC_INITDEFAULT | TSC_EN_SCSI_PAR);
 739         else
 740                 pCurHcb->HCS_SConf1 = (TSC_INITDEFAULT);
 741         TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_SConf1);
 742
 743         /* Enable HW reselect           */
 744         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT);
 745
 746         TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, 0);
 747
 748         /* selection time out = 250 ms */
 749         TUL_WR(pCurHcb->HCS_Base + TUL_STimeOut, 153);
 750
 751 /*--------- Enable SCSI terminator -----*/
 752         TUL_WR(pCurHcb->HCS_Base + TUL_XCtrl, (pCurHcb->HCS_Config & (HCC_ACT_TERM1 | HCC_ACT_TERM2)));
 753         TUL_WR(pCurHcb->HCS_Base + TUL_GCTRL1,
 754                ((pCurHcb->HCS_Config & HCC_AUTO_TERM) >> 4) | (TUL_RD(pCurHcb->HCS_Base, TUL_GCTRL1) & 0xFE));
 755
 756         for (i = 0,
 757              pwFlags = & (i91unvramp->NVM_SCSIInfo[0].NVM_Targ0Config),
 758              pbHeads = pbBiosAdr + 0x180;
 759              i < pCurHcb->HCS_MaxTar;
 760              i++, pwFlags++) {
 761                 pCurHcb->HCS_Tcs[i].TCS_Flags = *pwFlags & ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
 762                 if (pCurHcb->HCS_Tcs[i].TCS_Flags & TCF_EN_255)
 763                         pCurHcb->HCS_Tcs[i].TCS_DrvFlags = TCF_DRV_255_63;
 764                 else
 765                         pCurHcb->HCS_Tcs[i].TCS_DrvFlags = 0;
 766                 pCurHcb->HCS_Tcs[i].TCS_JS_Period = 0;
 767                 pCurHcb->HCS_Tcs[i].TCS_SConfig0 = pCurHcb->HCS_SConf1;
 768                 pCurHcb->HCS_Tcs[i].TCS_DrvHead = *pbHeads++;
 769                 if (pCurHcb->HCS_Tcs[i].TCS_DrvHead == 255)
 770                         pCurHcb->HCS_Tcs[i].TCS_DrvFlags = TCF_DRV_255_63;
 771                 else
 772                         pCurHcb->HCS_Tcs[i].TCS_DrvFlags = 0;
 773                 pCurHcb->HCS_Tcs[i].TCS_DrvSector = *pbHeads++;
 774                 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~TCF_BUSY;
 775                 pCurHcb->HCS_ActTags[i] = 0;
 776                 pCurHcb->HCS_MaxTags[i] = 0xFF;
 777         }                       /* for                          */
 778         printk("i91u: PCI Base=0x%04X, IRQ=%d, BIOS=0x%04X0, SCSI ID=%d\n",
 779                pCurHcb->HCS_Base, pCurHcb->HCS_Intr,
 780                pCurHcb->HCS_BIOS, pCurHcb->HCS_SCSI_ID);
 781 /*------------------- reset SCSI Bus ---------------------------*/
 782         if (pCurHcb->HCS_Config & HCC_SCSI_RESET) {
 783                 printk("i91u: Reset SCSI Bus ... \n");
 784                 tul_reset_scsi(pCurHcb, seconds);
 785         }
 786         TUL_WR(pCurHcb->HCS_Base + TUL_SCFG1, 0x17);
 787         TUL_WR(pCurHcb->HCS_Base + TUL_SIntEnable, 0xE9);
 788         return (0);
 789 }
 790
 791 /***************************************************************************/
 792 static SCB *tul_alloc_scb(HCS * hcsp)
 793 {
 794         SCB *pTmpScb;
 795         ULONG flags;
 796         spin_lock_irqsave(&(hcsp->HCS_AvailLock), flags);
 797         if ((pTmpScb = hcsp->HCS_FirstAvail) != NULL) {
 798 #if DEBUG_QUEUE
 799                 printk("find scb at %08lx\n", (ULONG) pTmpScb);
 800 #endif
 801                 if ((hcsp->HCS_FirstAvail = pTmpScb->SCB_NxtScb) == NULL)
 802                         hcsp->HCS_LastAvail = NULL;
 803                 pTmpScb->SCB_NxtScb = NULL;
 804                 pTmpScb->SCB_Status = SCB_RENT;
 805         }
 806         spin_unlock_irqrestore(&(hcsp->HCS_AvailLock), flags);
 807         return (pTmpScb);
 808 }
 809
 810 /***************************************************************************/
 811 static void tul_release_scb(HCS * hcsp, SCB * scbp)
 812 {
 813         ULONG flags;
 814
 815 #if DEBUG_QUEUE
 816         printk("Release SCB %lx; ", (ULONG) scbp);
 817 #endif
 818         spin_lock_irqsave(&(hcsp->HCS_AvailLock), flags);
 819         scbp->SCB_Srb = NULL;
 820         scbp->SCB_Status = 0;
 821         scbp->SCB_NxtScb = NULL;
 822         if (hcsp->HCS_LastAvail != NULL) {
 823                 hcsp->HCS_LastAvail->SCB_NxtScb = scbp;
 824                 hcsp->HCS_LastAvail = scbp;
 825         } else {
 826                 hcsp->HCS_FirstAvail = scbp;
 827                 hcsp->HCS_LastAvail = scbp;
 828         }
 829         spin_unlock_irqrestore(&(hcsp->HCS_AvailLock), flags);
 830 }
 831
 832 /***************************************************************************/
 833 static void tul_append_pend_scb(HCS * pCurHcb, SCB * scbp)
 834 {
 835
 836 #if DEBUG_QUEUE
 837         printk("Append pend SCB %lx; ", (ULONG) scbp);
 838 #endif
 839         scbp->SCB_Status = SCB_PEND;
 840         scbp->SCB_NxtScb = NULL;
 841         if (pCurHcb->HCS_LastPend != NULL) {
 842                 pCurHcb->HCS_LastPend->SCB_NxtScb = scbp;
 843                 pCurHcb->HCS_LastPend = scbp;
 844         } else {
 845                 pCurHcb->HCS_FirstPend = scbp;
 846                 pCurHcb->HCS_LastPend = scbp;
 847         }
 848 }
 849
 850 /***************************************************************************/
 851 static void tul_push_pend_scb(HCS * pCurHcb, SCB * scbp)
 852 {
 853
 854 #if DEBUG_QUEUE
 855         printk("Push pend SCB %lx; ", (ULONG) scbp);
 856 #endif
 857         scbp->SCB_Status = SCB_PEND;
 858         if ((scbp->SCB_NxtScb = pCurHcb->HCS_FirstPend) != NULL) {
 859                 pCurHcb->HCS_FirstPend = scbp;
 860         } else {
 861                 pCurHcb->HCS_FirstPend = scbp;
 862                 pCurHcb->HCS_LastPend = scbp;
 863         }
 864 }
 865
 866 /***************************************************************************/
 867 static SCB *tul_find_first_pend_scb(HCS * pCurHcb)
 868 {
 869         SCB *pFirstPend;
 870
 871
 872         pFirstPend = pCurHcb->HCS_FirstPend;
 873         while (pFirstPend != NULL) {
 874                 if (pFirstPend->SCB_Opcode != ExecSCSI) {
 875                         return (pFirstPend);
 876                 }
 877                 if (pFirstPend->SCB_TagMsg == 0) {
 878                         if ((pCurHcb->HCS_ActTags[pFirstPend->SCB_Target] == 0) &&
 879                             !(pCurHcb->HCS_Tcs[pFirstPend->SCB_Target].TCS_Flags & TCF_BUSY)) {
 880                                 return (pFirstPend);
 881                         }
 882                 } else {
 883                         if ((pCurHcb->HCS_ActTags[pFirstPend->SCB_Target] >=
 884                           pCurHcb->HCS_MaxTags[pFirstPend->SCB_Target]) |
 885                             (pCurHcb->HCS_Tcs[pFirstPend->SCB_Target].TCS_Flags & TCF_BUSY)) {
 886                                 pFirstPend = pFirstPend->SCB_NxtScb;
 887                                 continue;
 888                         }
 889                         return (pFirstPend);
 890                 }
 891                 pFirstPend = pFirstPend->SCB_NxtScb;
 892         }
 893
 894
 895         return (pFirstPend);
 896 }
 897 /***************************************************************************/
 898 static void tul_unlink_pend_scb(HCS * pCurHcb, SCB * pCurScb)
 899 {
 900         SCB *pTmpScb, *pPrevScb;
 901
 902 #if DEBUG_QUEUE
 903         printk("unlink pend SCB %lx; ", (ULONG) pCurScb);
 904 #endif
 905
 906         pPrevScb = pTmpScb = pCurHcb->HCS_FirstPend;
 907         while (pTmpScb != NULL) {
 908                 if (pCurScb == pTmpScb) {       /* Unlink this SCB              */
 909                         if (pTmpScb == pCurHcb->HCS_FirstPend) {
 910                                 if ((pCurHcb->HCS_FirstPend = pTmpScb->SCB_NxtScb) == NULL)
 911                                         pCurHcb->HCS_LastPend = NULL;
 912                         } else {
 913                                 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
 914                                 if (pTmpScb == pCurHcb->HCS_LastPend)
 915                                         pCurHcb->HCS_LastPend = pPrevScb;
 916                         }
 917                         pTmpScb->SCB_NxtScb = NULL;
 918                         break;
 919                 }
 920                 pPrevScb = pTmpScb;
 921                 pTmpScb = pTmpScb->SCB_NxtScb;
 922         }
 923         return;
 924 }
 925 /***************************************************************************/
 926 static void tul_append_busy_scb(HCS * pCurHcb, SCB * scbp)
 927 {
 928
 929 #if DEBUG_QUEUE
 930         printk("append busy SCB %lx; ", (ULONG) scbp);
 931 #endif
 932         if (scbp->SCB_TagMsg)
 933                 pCurHcb->HCS_ActTags[scbp->SCB_Target]++;
 934         else
 935                 pCurHcb->HCS_Tcs[scbp->SCB_Target].TCS_Flags |= TCF_BUSY;
 936         scbp->SCB_Status = SCB_BUSY;
 937         scbp->SCB_NxtScb = NULL;
 938         if (pCurHcb->HCS_LastBusy != NULL) {
 939                 pCurHcb->HCS_LastBusy->SCB_NxtScb = scbp;
 940                 pCurHcb->HCS_LastBusy = scbp;
 941         } else {
 942                 pCurHcb->HCS_FirstBusy = scbp;
 943                 pCurHcb->HCS_LastBusy = scbp;
 944         }
 945 }
 946
 947 /***************************************************************************/
 948 static SCB *tul_pop_busy_scb(HCS * pCurHcb)
 949 {
 950         SCB *pTmpScb;
 951
 952
 953         if ((pTmpScb = pCurHcb->HCS_FirstBusy) != NULL) {
 954                 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
 955                         pCurHcb->HCS_LastBusy = NULL;
 956                 pTmpScb->SCB_NxtScb = NULL;
 957                 if (pTmpScb->SCB_TagMsg)
 958                         pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--;
 959                 else
 960                         pCurHcb->HCS_Tcs[pTmpScb->SCB_Target].TCS_Flags &= ~TCF_BUSY;
 961         }
 962 #if DEBUG_QUEUE
 963         printk("Pop busy SCB %lx; ", (ULONG) pTmpScb);
 964 #endif
 965         return (pTmpScb);
 966 }
 967
 968 /***************************************************************************/
 969 static void tul_unlink_busy_scb(HCS * pCurHcb, SCB * pCurScb)
 970 {
 971         SCB *pTmpScb, *pPrevScb;
 972
 973 #if DEBUG_QUEUE
 974         printk("unlink busy SCB %lx; ", (ULONG) pCurScb);
 975 #endif
 976
 977         pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy;
 978         while (pTmpScb != NULL) {
 979                 if (pCurScb == pTmpScb) {       /* Unlink this SCB              */
 980                         if (pTmpScb == pCurHcb->HCS_FirstBusy) {
 981                                 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
 982                                         pCurHcb->HCS_LastBusy = NULL;
 983                         } else {
 984                                 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
 985                                 if (pTmpScb == pCurHcb->HCS_LastBusy)
 986                                         pCurHcb->HCS_LastBusy = pPrevScb;
 987                         }
 988                         pTmpScb->SCB_NxtScb = NULL;
 989                         if (pTmpScb->SCB_TagMsg)
 990                                 pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--;
 991                         else
 992                                 pCurHcb->HCS_Tcs[pTmpScb->SCB_Target].TCS_Flags &= ~TCF_BUSY;
 993                         break;
 994                 }
 995                 pPrevScb = pTmpScb;
 996                 pTmpScb = pTmpScb->SCB_NxtScb;
 997         }
 998         return;
 999 }
1000
1001 /***************************************************************************/
1002 SCB *tul_find_busy_scb(HCS * pCurHcb, WORD tarlun)
1003 {
1004         SCB *pTmpScb, *pPrevScb;
1005         WORD scbp_tarlun;
1006
1007
1008         pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy;
1009         while (pTmpScb != NULL) {
1010                 scbp_tarlun = (pTmpScb->SCB_Lun << 8) | (pTmpScb->SCB_Target);
1011                 if (scbp_tarlun == tarlun) {    /* Unlink this SCB              */
1012                         break;
1013                 }
1014                 pPrevScb = pTmpScb;
1015                 pTmpScb = pTmpScb->SCB_NxtScb;
1016         }
1017 #if DEBUG_QUEUE
1018         printk("find busy SCB %lx; ", (ULONG) pTmpScb);
1019 #endif
1020         return (pTmpScb);
1021 }
1022
1023 /***************************************************************************/
1024 static void tul_append_done_scb(HCS * pCurHcb, SCB * scbp)
1025 {
1026
1027 #if DEBUG_QUEUE
1028         printk("append done SCB %lx; ", (ULONG) scbp);
1029 #endif
1030
1031         scbp->SCB_Status = SCB_DONE;
1032         scbp->SCB_NxtScb = NULL;
1033         if (pCurHcb->HCS_LastDone != NULL) {
1034                 pCurHcb->HCS_LastDone->SCB_NxtScb = scbp;
1035                 pCurHcb->HCS_LastDone = scbp;
1036         } else {
1037                 pCurHcb->HCS_FirstDone = scbp;
1038                 pCurHcb->HCS_LastDone = scbp;
1039         }
1040 }
1041
1042 /***************************************************************************/
1043 SCB *tul_find_done_scb(HCS * pCurHcb)
1044 {
1045         SCB *pTmpScb;
1046
1047
1048         if ((pTmpScb = pCurHcb->HCS_FirstDone) != NULL) {
1049                 if ((pCurHcb->HCS_FirstDone = pTmpScb->SCB_NxtScb) == NULL)
1050                         pCurHcb->HCS_LastDone = NULL;
1051                 pTmpScb->SCB_NxtScb = NULL;
1052         }
1053 #if DEBUG_QUEUE
1054         printk("find done SCB %lx; ", (ULONG) pTmpScb);
1055 #endif
1056         return (pTmpScb);
1057 }
1058
1059 /***************************************************************************/
1060 static int tul_abort_srb(HCS * pCurHcb, struct scsi_cmnd *srbp)
1061 {
1062         ULONG flags;
1063         SCB *pTmpScb, *pPrevScb;
1064
1065         spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1066
1067         if ((pCurHcb->HCS_Semaph == 0) && (pCurHcb->HCS_ActScb == NULL)) {
1068                 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1069                 /* disable Jasmin SCSI Int        */
1070
1071                 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1072
1073                 tulip_main(pCurHcb);
1074
1075                 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1076
1077                 pCurHcb->HCS_Semaph = 1;
1078                 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1079
1080                 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1081
1082                 return SCSI_ABORT_SNOOZE;
1083         }
1084         pPrevScb = pTmpScb = pCurHcb->HCS_FirstPend;    /* Check Pend queue */
1085         while (pTmpScb != NULL) {
1086                 /* 07/27/98 */
1087                 if (pTmpScb->SCB_Srb == srbp) {
1088                         if (pTmpScb == pCurHcb->HCS_ActScb) {
1089                                 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1090                                 return SCSI_ABORT_BUSY;
1091                         } else if (pTmpScb == pCurHcb->HCS_FirstPend) {
1092                                 if ((pCurHcb->HCS_FirstPend = pTmpScb->SCB_NxtScb) == NULL)
1093                                         pCurHcb->HCS_LastPend = NULL;
1094                         } else {
1095                                 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
1096                                 if (pTmpScb == pCurHcb->HCS_LastPend)
1097                                         pCurHcb->HCS_LastPend = pPrevScb;
1098                         }
1099                         pTmpScb->SCB_HaStat = HOST_ABORTED;
1100                         pTmpScb->SCB_Flags |= SCF_DONE;
1101                         if (pTmpScb->SCB_Flags & SCF_POST)
1102                                 (*pTmpScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pTmpScb);
1103                         spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1104                         return SCSI_ABORT_SUCCESS;
1105                 }
1106                 pPrevScb = pTmpScb;
1107                 pTmpScb = pTmpScb->SCB_NxtScb;
1108         }
1109
1110         pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy;    /* Check Busy queue */
1111         while (pTmpScb != NULL) {
1112
1113                 if (pTmpScb->SCB_Srb == srbp) {
1114
1115                         if (pTmpScb == pCurHcb->HCS_ActScb) {
1116                                 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1117                                 return SCSI_ABORT_BUSY;
1118                         } else if (pTmpScb->SCB_TagMsg == 0) {
1119                                 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1120                                 return SCSI_ABORT_BUSY;
1121                         } else {
1122                                 pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--;
1123                                 if (pTmpScb == pCurHcb->HCS_FirstBusy) {
1124                                         if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
1125                                                 pCurHcb->HCS_LastBusy = NULL;
1126                                 } else {
1127                                         pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
1128                                         if (pTmpScb == pCurHcb->HCS_LastBusy)
1129                                                 pCurHcb->HCS_LastBusy = pPrevScb;
1130                                 }
1131                                 pTmpScb->SCB_NxtScb = NULL;
1132
1133
1134                                 pTmpScb->SCB_HaStat = HOST_ABORTED;
1135                                 pTmpScb->SCB_Flags |= SCF_DONE;
1136                                 if (pTmpScb->SCB_Flags & SCF_POST)
1137                                         (*pTmpScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pTmpScb);
1138                                 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1139                                 return SCSI_ABORT_SUCCESS;
1140                         }
1141                 }
1142                 pPrevScb = pTmpScb;
1143                 pTmpScb = pTmpScb->SCB_NxtScb;
1144         }
1145         spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1146         return (SCSI_ABORT_NOT_RUNNING);
1147 }
1148
1149 /***************************************************************************/
1150 static int tul_bad_seq(HCS * pCurHcb)
1151 {
1152         SCB *pCurScb;
1153
1154         printk("tul_bad_seg c=%d\n", pCurHcb->HCS_Index);
1155
1156         if ((pCurScb = pCurHcb->HCS_ActScb) != NULL) {
1157                 tul_unlink_busy_scb(pCurHcb, pCurScb);
1158                 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
1159                 pCurScb->SCB_TaStat = 0;
1160                 tul_append_done_scb(pCurHcb, pCurScb);
1161         }
1162         tul_stop_bm(pCurHcb);
1163
1164         tul_reset_scsi(pCurHcb, 8);     /* 7/29/98 */
1165
1166         return (tul_post_scsi_rst(pCurHcb));
1167 }
1168
1169 #if 0
1170
1171 /************************************************************************/
1172 static int tul_device_reset(HCS * pCurHcb, struct scsi_cmnd *pSrb,
1173                             unsigned int target, unsigned int ResetFlags)
1174 {
1175         ULONG flags;
1176         SCB *pScb;
1177         spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1178
1179         if (ResetFlags & SCSI_RESET_ASYNCHRONOUS) {
1180
1181                 if ((pCurHcb->HCS_Semaph == 0) && (pCurHcb->HCS_ActScb == NULL)) {
1182                         TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1183                         /* disable Jasmin SCSI Int        */
1184
1185                         spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1186
1187                         tulip_main(pCurHcb);
1188
1189                         spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1190
1191                         pCurHcb->HCS_Semaph = 1;
1192                         TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1193
1194                         spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1195
1196                         return SCSI_RESET_SNOOZE;
1197                 }
1198                 pScb = pCurHcb->HCS_FirstBusy;  /* Check Busy queue */
1199                 while (pScb != NULL) {
1200                         if (pScb->SCB_Srb == pSrb)
1201                                 break;
1202                         pScb = pScb->SCB_NxtScb;
1203                 }
1204                 if (pScb == NULL) {
1205                         printk("Unable to Reset - No SCB Found\n");
1206
1207                         spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1208                         return SCSI_RESET_NOT_RUNNING;
1209                 }
1210         }
1211         if ((pScb = tul_alloc_scb(pCurHcb)) == NULL) {
1212                 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1213                 return SCSI_RESET_NOT_RUNNING;
1214         }
1215         pScb->SCB_Opcode = BusDevRst;
1216         pScb->SCB_Flags = SCF_POST;
1217         pScb->SCB_Target = target;
1218         pScb->SCB_Mode = 0;
1219
1220         pScb->SCB_Srb = NULL;
1221         if (ResetFlags & SCSI_RESET_SYNCHRONOUS) {
1222                 pScb->SCB_Srb = pSrb;
1223         }
1224         tul_push_pend_scb(pCurHcb, pScb);       /* push this SCB to Pending queue */
1225
1226         if (pCurHcb->HCS_Semaph == 1) {
1227                 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1228                 /* disable Jasmin SCSI Int        */
1229                 pCurHcb->HCS_Semaph = 0;
1230
1231                 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1232
1233                 tulip_main(pCurHcb);
1234
1235                 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1236
1237                 pCurHcb->HCS_Semaph = 1;
1238                 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1239         }
1240         spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1241         return SCSI_RESET_PENDING;
1242 }
1243
1244 static int tul_reset_scsi_bus(HCS * pCurHcb)
1245 {
1246         ULONG flags;
1247
1248         spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1249         TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1250         pCurHcb->HCS_Semaph = 0;
1251
1252         spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1253
1254         tul_stop_bm(pCurHcb);
1255
1256         tul_reset_scsi(pCurHcb, 2);     /* 7/29/98 */
1257
1258         spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1259         tul_post_scsi_rst(pCurHcb);
1260
1261         spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1262
1263         tulip_main(pCurHcb);
1264
1265         spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1266
1267         pCurHcb->HCS_Semaph = 1;
1268         TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1269         spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1270         return (SCSI_RESET_SUCCESS | SCSI_RESET_HOST_RESET);
1271 }
1272
1273 #endif  /*  0  */
1274
1275 /************************************************************************/
1276 static void tul_exec_scb(HCS * pCurHcb, SCB * pCurScb)
1277 {
1278         ULONG flags;
1279
1280         pCurScb->SCB_Mode = 0;
1281
1282         pCurScb->SCB_SGIdx = 0;
1283         pCurScb->SCB_SGMax = pCurScb->SCB_SGLen;
1284
1285         spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1286
1287         tul_append_pend_scb(pCurHcb, pCurScb);  /* Append this SCB to Pending queue */
1288
1289 /* VVVVV 07/21/98 */
1290         if (pCurHcb->HCS_Semaph == 1) {
1291                 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1292                 /* disable Jasmin SCSI Int        */
1293                 pCurHcb->HCS_Semaph = 0;
1294
1295                 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1296
1297                 tulip_main(pCurHcb);
1298
1299                 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1300
1301                 pCurHcb->HCS_Semaph = 1;
1302                 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1303         }
1304         spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1305         return;
1306 }
1307
1308 /***************************************************************************/
1309 static int tul_isr(HCS * pCurHcb)
1310 {
1311         /* Enter critical section       */
1312
1313         if (TUL_RD(pCurHcb->HCS_Base, TUL_Int) & TSS_INT_PENDING) {
1314                 if (pCurHcb->HCS_Semaph == 1) {
1315                         TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1316                         /* Disable Tulip SCSI Int */
1317                         pCurHcb->HCS_Semaph = 0;
1318
1319                         tulip_main(pCurHcb);
1320
1321                         pCurHcb->HCS_Semaph = 1;
1322                         TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1323                         return (1);
1324                 }
1325         }
1326         return (0);
1327 }
1328
1329 /***************************************************************************/
1330 int tulip_main(HCS * pCurHcb)
1331 {
1332         SCB *pCurScb;
1333
1334         for (;;) {
1335
1336                 tulip_scsi(pCurHcb);    /* Call tulip_scsi              */
1337
1338                 while ((pCurScb = tul_find_done_scb(pCurHcb)) != NULL) {        /* find done entry */
1339                         if (pCurScb->SCB_TaStat == INI_QUEUE_FULL) {
1340                                 pCurHcb->HCS_MaxTags[pCurScb->SCB_Target] =
1341                                     pCurHcb->HCS_ActTags[pCurScb->SCB_Target] - 1;
1342                                 pCurScb->SCB_TaStat = 0;
1343                                 tul_append_pend_scb(pCurHcb, pCurScb);
1344                                 continue;
1345                         }
1346                         if (!(pCurScb->SCB_Mode & SCM_RSENS)) {         /* not in auto req. sense mode */
1347                                 if (pCurScb->SCB_TaStat == 2) {
1348
1349                                         /* clr sync. nego flag */
1350
1351                                         if (pCurScb->SCB_Flags & SCF_SENSE) {
1352                                                 BYTE len;
1353                                                 len = pCurScb->SCB_SenseLen;
1354                                                 if (len == 0)
1355                                                         len = 1;
1356                                                 pCurScb->SCB_BufLen = pCurScb->SCB_SenseLen;
1357                                                 pCurScb->SCB_BufPtr = pCurScb->SCB_SensePtr;
1358                                                 pCurScb->SCB_Flags &= ~(SCF_SG | SCF_DIR);      /* for xfer_data_in */
1359 /*                      pCurScb->SCB_Flags |= SCF_NO_DCHK;      */
1360                                                 /* so, we won't report worng direction in xfer_data_in,
1361                                                    and won't report HOST_DO_DU in state_6 */
1362                                                 pCurScb->SCB_Mode = SCM_RSENS;
1363                                                 pCurScb->SCB_Ident &= 0xBF;     /* Disable Disconnect */
1364                                                 pCurScb->SCB_TagMsg = 0;
1365                                                 pCurScb->SCB_TaStat = 0;
1366                                                 pCurScb->SCB_CDBLen = 6;
1367                                                 pCurScb->SCB_CDB[0] = SCSICMD_RequestSense;
1368                                                 pCurScb->SCB_CDB[1] = 0;
1369                                                 pCurScb->SCB_CDB[2] = 0;
1370                                                 pCurScb->SCB_CDB[3] = 0;
1371                                                 pCurScb->SCB_CDB[4] = len;
1372                                                 pCurScb->SCB_CDB[5] = 0;
1373                                                 tul_push_pend_scb(pCurHcb, pCurScb);
1374                                                 break;
1375                                         }
1376                                 }
1377                         } else {        /* in request sense mode */
1378
1379                                 if (pCurScb->SCB_TaStat == 2) {         /* check contition status again after sending
1380                                                                            requset sense cmd 0x3 */
1381                                         pCurScb->SCB_HaStat = HOST_BAD_PHAS;
1382                                 }
1383                                 pCurScb->SCB_TaStat = 2;
1384                         }
1385                         pCurScb->SCB_Flags |= SCF_DONE;
1386                         if (pCurScb->SCB_Flags & SCF_POST) {
1387                                 (*pCurScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pCurScb);
1388                         }
1389                 }               /* while */
1390
1391                 /* find_active: */
1392                 if (TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0) & TSS_INT_PENDING)
1393                         continue;
1394
1395                 if (pCurHcb->HCS_ActScb) {      /* return to OS and wait for xfer_done_ISR/Selected_ISR */
1396                         return 1;       /* return to OS, enable interrupt */
1397                 }
1398                 /* Check pending SCB            */
1399                 if (tul_find_first_pend_scb(pCurHcb) == NULL) {
1400                         return 1;       /* return to OS, enable interrupt */
1401                 }
1402         }                       /* End of for loop */
1403         /* statement won't reach here */
1404 }
1405
1406
1407
1408
1409 /*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
1410 /***************************************************************************/
1411 /***************************************************************************/
1412 /***************************************************************************/
1413 /***************************************************************************/
1414
1415 /***************************************************************************/
1416 void tulip_scsi(HCS * pCurHcb)
1417 {
1418         SCB *pCurScb;
1419         TCS *pCurTcb;
1420
1421         /* make sure to service interrupt asap */
1422
1423         if ((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0)) & TSS_INT_PENDING) {
1424
1425                 pCurHcb->HCS_Phase = pCurHcb->HCS_JSStatus0 & TSS_PH_MASK;
1426                 pCurHcb->HCS_JSStatus1 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1);
1427                 pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
1428                 if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) {     /* SCSI bus reset detected      */
1429                         int_tul_scsi_rst(pCurHcb);
1430                         return;
1431                 }
1432                 if (pCurHcb->HCS_JSInt & TSS_RESEL_INT) {       /* if selected/reselected interrupt */
1433                         if (int_tul_resel(pCurHcb) == 0)
1434                                 tul_next_state(pCurHcb);
1435                         return;
1436                 }
1437                 if (pCurHcb->HCS_JSInt & TSS_SEL_TIMEOUT) {
1438                         int_tul_busfree(pCurHcb);
1439                         return;
1440                 }
1441                 if (pCurHcb->HCS_JSInt & TSS_DISC_INT) {        /* BUS disconnection            */
1442                         int_tul_busfree(pCurHcb);       /* unexpected bus free or sel timeout */
1443                         return;
1444                 }
1445                 if (pCurHcb->HCS_JSInt & (TSS_FUNC_COMP | TSS_BUS_SERV)) {      /* func complete or Bus service */
1446                         if ((pCurScb = pCurHcb->HCS_ActScb) != NULL)
1447                                 tul_next_state(pCurHcb);
1448                         return;
1449                 }
1450         }
1451         if (pCurHcb->HCS_ActScb != NULL)
1452                 return;
1453
1454         if ((pCurScb = tul_find_first_pend_scb(pCurHcb)) == NULL)
1455                 return;
1456
1457         /* program HBA's SCSI ID & target SCSI ID */
1458         TUL_WR(pCurHcb->HCS_Base + TUL_SScsiId,
1459              (pCurHcb->HCS_SCSI_ID << 4) | (pCurScb->SCB_Target & 0x0F));
1460         if (pCurScb->SCB_Opcode == ExecSCSI) {
1461                 pCurTcb = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
1462
1463                 if (pCurScb->SCB_TagMsg)
1464                         pCurTcb->TCS_DrvFlags |= TCF_DRV_EN_TAG;
1465                 else
1466                         pCurTcb->TCS_DrvFlags &= ~TCF_DRV_EN_TAG;
1467
1468                 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurTcb->TCS_JS_Period);
1469                 if ((pCurTcb->TCS_Flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) {        /* do wdtr negotiation          */
1470                         tul_select_atn_stop(pCurHcb, pCurScb);
1471                 } else {
1472                         if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) {   /* do sync negotiation          */
1473                                 tul_select_atn_stop(pCurHcb, pCurScb);
1474                         } else {
1475                                 if (pCurScb->SCB_TagMsg)
1476                                         tul_select_atn3(pCurHcb, pCurScb);
1477                                 else
1478                                         tul_select_atn(pCurHcb, pCurScb);
1479                         }
1480                 }
1481                 if (pCurScb->SCB_Flags & SCF_POLL) {
1482                         while (wait_tulip(pCurHcb) != -1) {
1483                                 if (tul_next_state(pCurHcb) == -1)
1484                                         break;
1485                         }
1486                 }
1487         } else if (pCurScb->SCB_Opcode == BusDevRst) {
1488                 tul_select_atn_stop(pCurHcb, pCurScb);
1489                 pCurScb->SCB_NxtStat = 8;
1490                 if (pCurScb->SCB_Flags & SCF_POLL) {
1491                         while (wait_tulip(pCurHcb) != -1) {
1492                                 if (tul_next_state(pCurHcb) == -1)
1493                                         break;
1494                         }
1495                 }
1496         } else if (pCurScb->SCB_Opcode == AbortCmd) {
1497                 if (tul_abort_srb(pCurHcb, pCurScb->SCB_Srb) != 0) {
1498
1499
1500                         tul_unlink_pend_scb(pCurHcb, pCurScb);
1501
1502                         tul_release_scb(pCurHcb, pCurScb);
1503                 } else {
1504                         pCurScb->SCB_Opcode = BusDevRst;
1505                         tul_select_atn_stop(pCurHcb, pCurScb);
1506                         pCurScb->SCB_NxtStat = 8;
1507                 }
1508
1509 /* 08/03/98 */
1510         } else {
1511                 tul_unlink_pend_scb(pCurHcb, pCurScb);
1512                 pCurScb->SCB_HaStat = 0x16;     /* bad command */
1513                 tul_append_done_scb(pCurHcb, pCurScb);
1514         }
1515         return;
1516 }
1517
1518
1519 /***************************************************************************/
1520 int tul_next_state(HCS * pCurHcb)
1521 {
1522         int next;
1523
1524         next = pCurHcb->HCS_ActScb->SCB_NxtStat;
1525         for (;;) {
1526                 switch (next) {
1527                 case 1:
1528                         next = tul_state_1(pCurHcb);
1529                         break;
1530                 case 2:
1531                         next = tul_state_2(pCurHcb);
1532                         break;
1533                 case 3:
1534                         next = tul_state_3(pCurHcb);
1535                         break;
1536                 case 4:
1537                         next = tul_state_4(pCurHcb);
1538                         break;
1539                 case 5:
1540                         next = tul_state_5(pCurHcb);
1541                         break;
1542                 case 6:
1543                         next = tul_state_6(pCurHcb);
1544                         break;
1545                 case 7:
1546                         next = tul_state_7(pCurHcb);
1547                         break;
1548                 case 8:
1549                         return (tul_bus_device_reset(pCurHcb));
1550                 default:
1551                         return (tul_bad_seq(pCurHcb));
1552                 }
1553                 if (next <= 0)
1554                         return next;
1555         }
1556 }
1557
1558
1559 /***************************************************************************/
1560 /* sTate after selection with attention & stop */
1561 int tul_state_1(HCS * pCurHcb)
1562 {
1563         SCB *pCurScb = pCurHcb->HCS_ActScb;
1564         TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1565 #if DEBUG_STATE
1566         printk("-s1-");
1567 #endif
1568
1569         tul_unlink_pend_scb(pCurHcb, pCurScb);
1570         tul_append_busy_scb(pCurHcb, pCurScb);
1571
1572         TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0);
1573         /* ATN on */
1574         if (pCurHcb->HCS_Phase == MSG_OUT) {
1575
1576                 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, (TSC_EN_BUS_IN | TSC_HW_RESELECT));
1577
1578                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident);
1579
1580                 if (pCurScb->SCB_TagMsg) {
1581                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagMsg);
1582                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagId);
1583                 }
1584                 if ((pCurTcb->TCS_Flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) {
1585
1586                         pCurTcb->TCS_Flags |= TCF_WDTR_DONE;
1587
1588                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
1589                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 2);       /* Extended msg length */
1590                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3);       /* Sync request */
1591                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1);       /* Start from 16 bits */
1592                 } else if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) {
1593
1594                         pCurTcb->TCS_Flags |= TCF_SYNC_DONE;
1595
1596                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
1597                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3);       /* extended msg length */
1598                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1);       /* sync request */
1599                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, tul_rate_tbl[pCurTcb->TCS_Flags & TCF_SCSI_RATE]);
1600                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MAX_OFFSET);      /* REQ/ACK offset */
1601                 }
1602                 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1603                 if (wait_tulip(pCurHcb) == -1)
1604                         return (-1);
1605         }
1606         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1607         TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)));
1608         return (3);
1609 }
1610
1611
1612 /***************************************************************************/
1613 /* state after selection with attention */
1614 /* state after selection with attention3 */
1615 int tul_state_2(HCS * pCurHcb)
1616 {
1617         SCB *pCurScb = pCurHcb->HCS_ActScb;
1618         TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1619 #if DEBUG_STATE
1620         printk("-s2-");
1621 #endif
1622
1623         tul_unlink_pend_scb(pCurHcb, pCurScb);
1624         tul_append_busy_scb(pCurHcb, pCurScb);
1625
1626         TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0);
1627
1628         if (pCurHcb->HCS_JSStatus1 & TSS_CMD_PH_CMP) {
1629                 return (4);
1630         }
1631         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1632         TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)));
1633         return (3);
1634 }
1635
1636 /***************************************************************************/
1637 /* state before CDB xfer is done */
1638 int tul_state_3(HCS * pCurHcb)
1639 {
1640         SCB *pCurScb = pCurHcb->HCS_ActScb;
1641         TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1642         int i;
1643
1644 #if DEBUG_STATE
1645         printk("-s3-");
1646 #endif
1647         for (;;) {
1648                 switch (pCurHcb->HCS_Phase) {
1649                 case CMD_OUT:   /* Command out phase            */
1650                         for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++)
1651                                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]);
1652                         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1653                         if (wait_tulip(pCurHcb) == -1)
1654                                 return (-1);
1655                         if (pCurHcb->HCS_Phase == CMD_OUT) {
1656                                 return (tul_bad_seq(pCurHcb));
1657                         }
1658                         return (4);
1659
1660                 case MSG_IN:    /* Message in phase             */
1661                         pCurScb->SCB_NxtStat = 3;
1662                         if (tul_msgin(pCurHcb) == -1)
1663                                 return (-1);
1664                         break;
1665
1666                 case STATUS_IN: /* Status phase                 */
1667                         if (tul_status_msg(pCurHcb) == -1)
1668                                 return (-1);
1669                         break;
1670
1671                 case MSG_OUT:   /* Message out phase            */
1672                         if (pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) {
1673
1674                                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP);         /* msg nop */
1675                                 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1676                                 if (wait_tulip(pCurHcb) == -1)
1677                                         return (-1);
1678
1679                         } else {
1680                                 pCurTcb->TCS_Flags |= TCF_SYNC_DONE;
1681
1682                                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
1683                                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3);       /* ext. msg len */
1684                                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1);       /* sync request */
1685                                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, tul_rate_tbl[pCurTcb->TCS_Flags & TCF_SCSI_RATE]);
1686                                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MAX_OFFSET);      /* REQ/ACK offset */
1687                                 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1688                                 if (wait_tulip(pCurHcb) == -1)
1689                                         return (-1);
1690                                 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1691                                 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7));
1692
1693                         }
1694                         break;
1695
1696                 default:
1697                         return (tul_bad_seq(pCurHcb));
1698                 }
1699         }
1700 }
1701
1702
1703 /***************************************************************************/
1704 int tul_state_4(HCS * pCurHcb)
1705 {
1706         SCB *pCurScb = pCurHcb->HCS_ActScb;
1707
1708 #if DEBUG_STATE
1709         printk("-s4-");
1710 #endif
1711         if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_NO_XF) {
1712                 return (6);     /* Go to state 6                */
1713         }
1714         for (;;) {
1715                 if (pCurScb->SCB_BufLen == 0)
1716                         return (6);     /* Go to state 6                */
1717
1718                 switch (pCurHcb->HCS_Phase) {
1719
1720                 case STATUS_IN: /* Status phase                 */
1721                         if ((pCurScb->SCB_Flags & SCF_DIR) != 0) {      /* if direction bit set then report data underrun */
1722                                 pCurScb->SCB_HaStat = HOST_DO_DU;
1723                         }
1724                         if ((tul_status_msg(pCurHcb)) == -1)
1725                                 return (-1);
1726                         break;
1727
1728                 case MSG_IN:    /* Message in phase             */
1729                         pCurScb->SCB_NxtStat = 0x4;
1730                         if (tul_msgin(pCurHcb) == -1)
1731                                 return (-1);
1732                         break;
1733
1734                 case MSG_OUT:   /* Message out phase            */
1735                         if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) {
1736                                 pCurScb->SCB_BufLen = 0;
1737                                 pCurScb->SCB_HaStat = HOST_DO_DU;
1738                                 if (tul_msgout_ide(pCurHcb) == -1)
1739                                         return (-1);
1740                                 return (6);     /* Go to state 6                */
1741                         } else {
1742                                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP);         /* msg nop */
1743                                 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1744                                 if (wait_tulip(pCurHcb) == -1)
1745                                         return (-1);
1746                         }
1747                         break;
1748
1749                 case DATA_IN:   /* Data in phase                */
1750                         return (tul_xfer_data_in(pCurHcb));
1751
1752                 case DATA_OUT:  /* Data out phase               */
1753                         return (tul_xfer_data_out(pCurHcb));
1754
1755                 default:
1756                         return (tul_bad_seq(pCurHcb));
1757                 }
1758         }
1759 }
1760
1761
1762 /***************************************************************************/
1763 /* state after dma xfer done or phase change before xfer done */
1764 int tul_state_5(HCS * pCurHcb)
1765 {
1766         SCB *pCurScb = pCurHcb->HCS_ActScb;
1767         long cnt, xcnt;         /* cannot use unsigned !! code: if (xcnt < 0) */
1768
1769 #if DEBUG_STATE
1770         printk("-s5-");
1771 #endif
1772 /*------ get remaining count -------*/
1773
1774         cnt = TUL_RDLONG(pCurHcb->HCS_Base, TUL_SCnt0) & 0x0FFFFFF;
1775
1776         if (TUL_RD(pCurHcb->HCS_Base, TUL_XCmd) & 0x20) {
1777                 /* ----------------------- DATA_IN ----------------------------- */
1778                 /* check scsi parity error */
1779                 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) {
1780                         pCurScb->SCB_HaStat = HOST_DO_DU;
1781                 }
1782                 if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) {   /* DMA xfer pending, Send STOP  */
1783                         /* tell Hardware  scsi xfer has been terminated */
1784                         TUL_WR(pCurHcb->HCS_Base + TUL_XCtrl, TUL_RD(pCurHcb->HCS_Base, TUL_XCtrl) | 0x80);
1785                         /* wait until DMA xfer not pending */
1786                         while (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND);
1787                 }
1788         } else {
1789 /*-------- DATA OUT -----------*/
1790                 if ((TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1) & TSS_XFER_CMP) == 0) {
1791                         if (pCurHcb->HCS_ActTcs->TCS_JS_Period & TSC_WIDE_SCSI)
1792                                 cnt += (TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F) << 1;
1793                         else
1794                                 cnt += (TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F);
1795                 }
1796                 if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) {   /* if DMA xfer is pending, abort DMA xfer */
1797                         TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT);
1798                         /* wait Abort DMA xfer done */
1799                         while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & XABT) == 0);
1800                 }
1801                 if ((cnt == 1) && (pCurHcb->HCS_Phase == DATA_OUT)) {
1802                         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1803                         if (wait_tulip(pCurHcb) == -1) {
1804                                 return (-1);
1805                         }
1806                         cnt = 0;
1807                 } else {
1808                         if ((TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1) & TSS_XFER_CMP) == 0)
1809                                 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1810                 }
1811         }
1812
1813         if (cnt == 0) {
1814                 pCurScb->SCB_BufLen = 0;
1815                 return (6);     /* Go to state 6                */
1816         }
1817         /* Update active data pointer */
1818         xcnt = (long) pCurScb->SCB_BufLen - cnt;        /* xcnt== bytes already xferred */
1819         pCurScb->SCB_BufLen = (U32) cnt;        /* cnt == bytes left to be xferred */
1820         if (pCurScb->SCB_Flags & SCF_SG) {
1821                 register SG *sgp;
1822                 ULONG i;
1823
1824                 sgp = &pCurScb->SCB_SGList[pCurScb->SCB_SGIdx];
1825                 for (i = pCurScb->SCB_SGIdx; i < pCurScb->SCB_SGMax; sgp++, i++) {
1826                         xcnt -= (long) sgp->SG_Len;
1827                         if (xcnt < 0) {         /* this sgp xfer half done */
1828                                 xcnt += (long) sgp->SG_Len;     /* xcnt == bytes xferred in this sgp */
1829                                 sgp->SG_Ptr += (U32) xcnt;      /* new ptr to be xfer */
1830                                 sgp->SG_Len -= (U32) xcnt;      /* new len to be xfer */
1831                                 pCurScb->SCB_BufPtr += ((U32) (i - pCurScb->SCB_SGIdx) << 3);
1832                                 /* new SG table ptr */
1833                                 pCurScb->SCB_SGLen = (BYTE) (pCurScb->SCB_SGMax - i);
1834                                 /* new SG table len */
1835                                 pCurScb->SCB_SGIdx = (WORD) i;
1836                                 /* for next disc and come in this loop */
1837                                 return (4);     /* Go to state 4                */
1838                         }
1839                         /* else (xcnt >= 0 , i.e. this sgp already xferred */
1840                 }               /* for */
1841                 return (6);     /* Go to state 6                */
1842         } else {
1843                 pCurScb->SCB_BufPtr += (U32) xcnt;
1844         }
1845         return (4);             /* Go to state 4                */
1846 }
1847
1848 /***************************************************************************/
1849 /* state after Data phase */
1850 int tul_state_6(HCS * pCurHcb)
1851 {
1852         SCB *pCurScb = pCurHcb->HCS_ActScb;
1853
1854 #if DEBUG_STATE
1855         printk("-s6-");
1856 #endif
1857         for (;;) {
1858                 switch (pCurHcb->HCS_Phase) {
1859                 case STATUS_IN: /* Status phase                 */
1860                         if ((tul_status_msg(pCurHcb)) == -1)
1861                                 return (-1);
1862                         break;
1863
1864                 case MSG_IN:    /* Message in phase             */
1865                         pCurScb->SCB_NxtStat = 6;
1866                         if ((tul_msgin(pCurHcb)) == -1)
1867                                 return (-1);
1868                         break;
1869
1870                 case MSG_OUT:   /* Message out phase            */
1871                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP);         /* msg nop */
1872                         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1873                         if (wait_tulip(pCurHcb) == -1)
1874                                 return (-1);
1875                         break;
1876
1877                 case DATA_IN:   /* Data in phase                */
1878                         return (tul_xpad_in(pCurHcb));
1879
1880                 case DATA_OUT:  /* Data out phase               */
1881                         return (tul_xpad_out(pCurHcb));
1882
1883                 default:
1884                         return (tul_bad_seq(pCurHcb));
1885                 }
1886         }
1887 }
1888
1889 /***************************************************************************/
1890 int tul_state_7(HCS * pCurHcb)
1891 {
1892         int cnt, i;
1893
1894 #if DEBUG_STATE
1895         printk("-s7-");
1896 #endif
1897         /* flush SCSI FIFO */
1898         cnt = TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F;
1899         if (cnt) {
1900                 for (i = 0; i < cnt; i++)
1901                         TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
1902         }
1903         switch (pCurHcb->HCS_Phase) {
1904         case DATA_IN:           /* Data in phase                */
1905         case DATA_OUT:          /* Data out phase               */
1906                 return (tul_bad_seq(pCurHcb));
1907         default:
1908                 return (6);     /* Go to state 6                */
1909         }
1910 }
1911
1912 /***************************************************************************/
1913 int tul_xfer_data_in(HCS * pCurHcb)
1914 {
1915         SCB *pCurScb = pCurHcb->HCS_ActScb;
1916
1917         if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_DOUT) {
1918                 return (6);     /* wrong direction */
1919         }
1920         TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, pCurScb->SCB_BufLen);
1921
1922         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_DMA_IN);    /* 7/25/95 */
1923
1924         if (pCurScb->SCB_Flags & SCF_SG) {      /* S/G xfer */
1925                 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, ((ULONG) pCurScb->SCB_SGLen) << 3);
1926                 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1927                 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_SG_IN);
1928         } else {
1929                 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, pCurScb->SCB_BufLen);
1930                 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1931                 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_IN);
1932         }
1933         pCurScb->SCB_NxtStat = 0x5;
1934         return (0);             /* return to OS, wait xfer done , let jas_isr come in */
1935 }
1936
1937
1938 /***************************************************************************/
1939 int tul_xfer_data_out(HCS * pCurHcb)
1940 {
1941         SCB *pCurScb = pCurHcb->HCS_ActScb;
1942
1943         if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_DIN) {
1944                 return (6);     /* wrong direction */
1945         }
1946         TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, pCurScb->SCB_BufLen);
1947         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_DMA_OUT);
1948
1949         if (pCurScb->SCB_Flags & SCF_SG) {      /* S/G xfer */
1950                 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, ((ULONG) pCurScb->SCB_SGLen) << 3);
1951                 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1952                 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_SG_OUT);
1953         } else {
1954                 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, pCurScb->SCB_BufLen);
1955                 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1956                 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_OUT);
1957         }
1958
1959         pCurScb->SCB_NxtStat = 0x5;
1960         return (0);             /* return to OS, wait xfer done , let jas_isr come in */
1961 }
1962
1963
1964 /***************************************************************************/
1965 int tul_xpad_in(HCS * pCurHcb)
1966 {
1967         SCB *pCurScb = pCurHcb->HCS_ActScb;
1968         TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1969
1970         if ((pCurScb->SCB_Flags & SCF_DIR) != SCF_NO_DCHK) {
1971                 pCurScb->SCB_HaStat = HOST_DO_DU;       /* over run             */
1972         }
1973         for (;;) {
1974                 if (pCurTcb->TCS_JS_Period & TSC_WIDE_SCSI)
1975                         TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 2);
1976                 else
1977                         TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
1978
1979                 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
1980                 if ((wait_tulip(pCurHcb)) == -1) {
1981                         return (-1);
1982                 }
1983                 if (pCurHcb->HCS_Phase != DATA_IN) {
1984                         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1985                         return (6);
1986                 }
1987                 TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
1988         }
1989 }
1990
1991 int tul_xpad_out(HCS * pCurHcb)
1992 {
1993         SCB *pCurScb = pCurHcb->HCS_ActScb;
1994         TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1995
1996         if ((pCurScb->SCB_Flags & SCF_DIR) != SCF_NO_DCHK) {
1997                 pCurScb->SCB_HaStat = HOST_DO_DU;       /* over run             */
1998         }
1999         for (;;) {
2000                 if (pCurTcb->TCS_JS_Period & TSC_WIDE_SCSI)
2001                         TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 2);
2002                 else
2003                         TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2004
2005                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 0);
2006                 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2007                 if ((wait_tulip(pCurHcb)) == -1) {
2008                         return (-1);
2009                 }
2010                 if (pCurHcb->HCS_Phase != DATA_OUT) {   /* Disable wide CPU to allow read 16 bits */
2011                         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT);
2012                         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2013                         return (6);
2014                 }
2015         }
2016 }
2017
2018
2019 /***************************************************************************/
2020 int tul_status_msg(HCS * pCurHcb)
2021 {                               /* status & MSG_IN */
2022         SCB *pCurScb = pCurHcb->HCS_ActScb;
2023         BYTE msg;
2024
2025         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_CMD_COMP);
2026         if ((wait_tulip(pCurHcb)) == -1) {
2027                 return (-1);
2028         }
2029         /* get status */
2030         pCurScb->SCB_TaStat = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2031
2032         if (pCurHcb->HCS_Phase == MSG_OUT) {
2033                 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) {
2034                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_PARITY);
2035                 } else {
2036                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP);
2037                 }
2038                 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2039                 return (wait_tulip(pCurHcb));
2040         }
2041         if (pCurHcb->HCS_Phase == MSG_IN) {
2042                 msg = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2043                 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) {   /* Parity error                 */
2044                         if ((tul_msgin_accept(pCurHcb)) == -1)
2045                                 return (-1);
2046                         if (pCurHcb->HCS_Phase != MSG_OUT)
2047                                 return (tul_bad_seq(pCurHcb));
2048                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_PARITY);
2049                         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2050                         return (wait_tulip(pCurHcb));
2051                 }
2052                 if (msg == 0) { /* Command complete             */
2053
2054                         if ((pCurScb->SCB_TaStat & 0x18) == 0x10) {     /* No link support              */
2055                                 return (tul_bad_seq(pCurHcb));
2056                         }
2057                         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2058                         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2059                         return tul_wait_done_disc(pCurHcb);
2060
2061                 }
2062                 if ((msg == MSG_LINK_COMP) || (msg == MSG_LINK_FLAG)) {
2063                         if ((pCurScb->SCB_TaStat & 0x18) == 0x10)
2064                                 return (tul_msgin_accept(pCurHcb));
2065                 }
2066         }
2067         return (tul_bad_seq(pCurHcb));
2068 }
2069
2070
2071 /***************************************************************************/
2072 /* scsi bus free */
2073 int int_tul_busfree(HCS * pCurHcb)
2074 {
2075         SCB *pCurScb = pCurHcb->HCS_ActScb;
2076
2077         if (pCurScb != NULL) {
2078                 if (pCurScb->SCB_Status & SCB_SELECT) {         /* selection timeout */
2079                         tul_unlink_pend_scb(pCurHcb, pCurScb);
2080                         pCurScb->SCB_HaStat = HOST_SEL_TOUT;
2081                         tul_append_done_scb(pCurHcb, pCurScb);
2082                 } else {        /* Unexpected bus free          */
2083                         tul_unlink_busy_scb(pCurHcb, pCurScb);
2084                         pCurScb->SCB_HaStat = HOST_BUS_FREE;
2085                         tul_append_done_scb(pCurHcb, pCurScb);
2086                 }
2087                 pCurHcb->HCS_ActScb = NULL;
2088                 pCurHcb->HCS_ActTcs = NULL;
2089         }
2090         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);         /* Flush SCSI FIFO  */
2091         TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2092         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT);        /* Enable HW reselect       */
2093         return (-1);
2094 }
2095
2096
2097 /***************************************************************************/
2098 /* scsi bus reset */
2099 static int int_tul_scsi_rst(HCS * pCurHcb)
2100 {
2101         SCB *pCurScb;
2102         int i;
2103
2104         /* if DMA xfer is pending, abort DMA xfer */
2105         if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & 0x01) {
2106                 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT | TAX_X_CLR_FIFO);
2107                 /* wait Abort DMA xfer done */
2108                 while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & 0x04) == 0);
2109                 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2110         }
2111         /* Abort all active & disconnected scb */
2112         while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) {
2113                 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
2114                 tul_append_done_scb(pCurHcb, pCurScb);
2115         }
2116         pCurHcb->HCS_ActScb = NULL;
2117         pCurHcb->HCS_ActTcs = NULL;
2118
2119         /* clr sync nego. done flag */
2120         for (i = 0; i < pCurHcb->HCS_MaxTar; i++) {
2121                 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
2122         }
2123         return (-1);
2124 }
2125
2126
2127 /***************************************************************************/
2128 /* scsi reselection */
2129 int int_tul_resel(HCS * pCurHcb)
2130 {
2131         SCB *pCurScb;
2132         TCS *pCurTcb;
2133         BYTE tag, msg = 0;
2134         BYTE tar, lun;
2135
2136         if ((pCurScb = pCurHcb->HCS_ActScb) != NULL) {
2137                 if (pCurScb->SCB_Status & SCB_SELECT) {         /* if waiting for selection complete */
2138                         pCurScb->SCB_Status &= ~SCB_SELECT;
2139                 }
2140                 pCurHcb->HCS_ActScb = NULL;
2141         }
2142         /* --------- get target id---------------------- */
2143         tar = TUL_RD(pCurHcb->HCS_Base, TUL_SBusId);
2144         /* ------ get LUN from Identify message----------- */
2145         lun = TUL_RD(pCurHcb->HCS_Base, TUL_SIdent) & 0x0F;
2146         /* 07/22/98 from 0x1F -> 0x0F */
2147         pCurTcb = &pCurHcb->HCS_Tcs[tar];
2148         pCurHcb->HCS_ActTcs = pCurTcb;
2149         TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0);
2150         TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurTcb->TCS_JS_Period);
2151
2152
2153         /* ------------- tag queueing ? ------------------- */
2154         if (pCurTcb->TCS_DrvFlags & TCF_DRV_EN_TAG) {
2155                 if ((tul_msgin_accept(pCurHcb)) == -1)
2156                         return (-1);
2157                 if (pCurHcb->HCS_Phase != MSG_IN)
2158                         goto no_tag;
2159                 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2160                 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2161                 if ((wait_tulip(pCurHcb)) == -1)
2162                         return (-1);
2163                 msg = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);     /* Read Tag Message    */
2164
2165                 if ((msg < MSG_STAG) || (msg > MSG_OTAG))       /* Is simple Tag      */
2166                         goto no_tag;
2167
2168                 if ((tul_msgin_accept(pCurHcb)) == -1)
2169                         return (-1);
2170
2171                 if (pCurHcb->HCS_Phase != MSG_IN)
2172                         goto no_tag;
2173
2174                 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2175                 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2176                 if ((wait_tulip(pCurHcb)) == -1)
2177                         return (-1);
2178                 tag = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);     /* Read Tag ID       */
2179                 pCurScb = pCurHcb->HCS_Scb + tag;
2180                 if ((pCurScb->SCB_Target != tar) || (pCurScb->SCB_Lun != lun)) {
2181                         return tul_msgout_abort_tag(pCurHcb);
2182                 }
2183                 if (pCurScb->SCB_Status != SCB_BUSY) {  /* 03/24/95             */
2184                         return tul_msgout_abort_tag(pCurHcb);
2185                 }
2186                 pCurHcb->HCS_ActScb = pCurScb;
2187                 if ((tul_msgin_accept(pCurHcb)) == -1)
2188                         return (-1);
2189         } else {                /* No tag               */
2190               no_tag:
2191                 if ((pCurScb = tul_find_busy_scb(pCurHcb, tar | (lun << 8))) == NULL) {
2192                         return tul_msgout_abort_targ(pCurHcb);
2193                 }
2194                 pCurHcb->HCS_ActScb = pCurScb;
2195                 if (!(pCurTcb->TCS_DrvFlags & TCF_DRV_EN_TAG)) {
2196                         if ((tul_msgin_accept(pCurHcb)) == -1)
2197                                 return (-1);
2198                 }
2199         }
2200         return 0;
2201 }
2202
2203
2204 /***************************************************************************/
2205 static int int_tul_bad_seq(HCS * pCurHcb)
2206 {                               /* target wrong phase           */
2207         SCB *pCurScb;
2208         int i;
2209
2210         tul_reset_scsi(pCurHcb, 10);
2211
2212         while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) {
2213                 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
2214                 tul_append_done_scb(pCurHcb, pCurScb);
2215         }
2216         for (i = 0; i < pCurHcb->HCS_MaxTar; i++) {
2217                 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
2218         }
2219         return (-1);
2220 }
2221
2222
2223 /***************************************************************************/
2224 int tul_msgout_abort_targ(HCS * pCurHcb)
2225 {
2226
2227         TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2228         if (tul_msgin_accept(pCurHcb) == -1)
2229                 return (-1);
2230         if (pCurHcb->HCS_Phase != MSG_OUT)
2231                 return (tul_bad_seq(pCurHcb));
2232
2233         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_ABORT);
2234         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2235
2236         return tul_wait_disc(pCurHcb);
2237 }
2238
2239 /***************************************************************************/
2240 int tul_msgout_abort_tag(HCS * pCurHcb)
2241 {
2242
2243         TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2244         if (tul_msgin_accept(pCurHcb) == -1)
2245                 return (-1);
2246         if (pCurHcb->HCS_Phase != MSG_OUT)
2247                 return (tul_bad_seq(pCurHcb));
2248
2249         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_ABORT_TAG);
2250         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2251
2252         return tul_wait_disc(pCurHcb);
2253
2254 }
2255
2256 /***************************************************************************/
2257 int tul_msgin(HCS * pCurHcb)
2258 {
2259         TCS *pCurTcb;
2260
2261         for (;;) {
2262
2263                 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2264
2265                 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2266                 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2267                 if ((wait_tulip(pCurHcb)) == -1)
2268                         return (-1);
2269
2270                 switch (TUL_RD(pCurHcb->HCS_Base, TUL_SFifo)) {
2271                 case MSG_DISC:  /* Disconnect msg */
2272                         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2273
2274                         return tul_wait_disc(pCurHcb);
2275
2276                 case MSG_SDP:
2277                 case MSG_RESTORE:
2278                 case MSG_NOP:
2279                         tul_msgin_accept(pCurHcb);
2280                         break;
2281
2282                 case MSG_REJ:   /* Clear ATN first              */
2283                         TUL_WR(pCurHcb->HCS_Base + TUL_SSignal,
2284                                (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)));
2285                         pCurTcb = pCurHcb->HCS_ActTcs;
2286                         if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) {   /* do sync nego */
2287                                 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2288                         }
2289                         tul_msgin_accept(pCurHcb);
2290                         break;
2291
2292                 case MSG_EXTEND:        /* extended msg */
2293                         tul_msgin_extend(pCurHcb);
2294                         break;
2295
2296                 case MSG_IGNOREWIDE:
2297                         tul_msgin_accept(pCurHcb);
2298                         break;
2299
2300                         /* get */
2301                         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2302                         if (wait_tulip(pCurHcb) == -1)
2303                                 return -1;
2304
2305                         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 0);       /* put pad  */
2306                         TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);   /* get IGNORE field */
2307                         TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);   /* get pad */
2308
2309                         tul_msgin_accept(pCurHcb);
2310                         break;
2311
2312                 case MSG_COMP:
2313                         {
2314                                 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2315                                 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2316                                 return tul_wait_done_disc(pCurHcb);
2317                         }
2318                 default:
2319                         tul_msgout_reject(pCurHcb);
2320                         break;
2321                 }
2322                 if (pCurHcb->HCS_Phase != MSG_IN)
2323                         return (pCurHcb->HCS_Phase);
2324         }
2325         /* statement won't reach here */
2326 }
2327
2328
2329
2330
2331 /***************************************************************************/
2332 int tul_msgout_reject(HCS * pCurHcb)
2333 {
2334
2335         TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2336
2337         if ((tul_msgin_accept(pCurHcb)) == -1)
2338                 return (-1);
2339
2340         if (pCurHcb->HCS_Phase == MSG_OUT) {
2341                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_REJ);         /* Msg reject           */
2342                 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2343                 return (wait_tulip(pCurHcb));
2344         }
2345         return (pCurHcb->HCS_Phase);
2346 }
2347
2348
2349
2350 /***************************************************************************/
2351 int tul_msgout_ide(HCS * pCurHcb)
2352 {
2353         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_IDE);         /* Initiator Detected Error */
2354         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2355         return (wait_tulip(pCurHcb));
2356 }
2357
2358
2359 /***************************************************************************/
2360 int tul_msgin_extend(HCS * pCurHcb)
2361 {
2362         BYTE len, idx;
2363
2364         if (tul_msgin_accept(pCurHcb) != MSG_IN)
2365                 return (pCurHcb->HCS_Phase);
2366
2367         /* Get extended msg length      */
2368         TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2369         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2370         if (wait_tulip(pCurHcb) == -1)
2371                 return (-1);
2372
2373         len = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2374         pCurHcb->HCS_Msg[0] = len;
2375         for (idx = 1; len != 0; len--) {
2376
2377                 if ((tul_msgin_accept(pCurHcb)) != MSG_IN)
2378                         return (pCurHcb->HCS_Phase);
2379                 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2380                 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2381                 if (wait_tulip(pCurHcb) == -1)
2382                         return (-1);
2383                 pCurHcb->HCS_Msg[idx++] = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2384         }
2385         if (pCurHcb->HCS_Msg[1] == 1) {         /* if it's synchronous data transfer request */
2386                 if (pCurHcb->HCS_Msg[0] != 3)   /* if length is not right */
2387                         return (tul_msgout_reject(pCurHcb));
2388                 if (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_SYNC_NEGO) {        /* Set OFFSET=0 to do async, nego back */
2389                         pCurHcb->HCS_Msg[3] = 0;
2390                 } else {
2391                         if ((tul_msgin_sync(pCurHcb) == 0) &&
2392                             (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_SYNC_DONE)) {
2393                                 tul_sync_done(pCurHcb);
2394                                 return (tul_msgin_accept(pCurHcb));
2395                         }
2396                 }
2397
2398                 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2399                 if ((tul_msgin_accept(pCurHcb)) != MSG_OUT)
2400                         return (pCurHcb->HCS_Phase);
2401                 /* sync msg out */
2402                 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2403
2404                 tul_sync_done(pCurHcb);
2405
2406                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
2407                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3);
2408                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1);
2409                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[2]);
2410                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[3]);
2411
2412                 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2413                 return (wait_tulip(pCurHcb));
2414         }
2415         if ((pCurHcb->HCS_Msg[0] != 2) || (pCurHcb->HCS_Msg[1] != 3))
2416                 return (tul_msgout_reject(pCurHcb));
2417         /* if it's WIDE DATA XFER REQ   */
2418         if (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_WDTR) {
2419                 pCurHcb->HCS_Msg[2] = 0;
2420         } else {
2421                 if (pCurHcb->HCS_Msg[2] > 2)    /* > 32 bits            */
2422                         return (tul_msgout_reject(pCurHcb));
2423                 if (pCurHcb->HCS_Msg[2] == 2) {         /* == 32                */
2424                         pCurHcb->HCS_Msg[2] = 1;
2425                 } else {
2426                         if ((pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_WDTR) == 0) {
2427                                 wdtr_done(pCurHcb);
2428                                 if ((pCurHcb->HCS_ActTcs->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0)
2429                                         TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2430                                 return (tul_msgin_accept(pCurHcb));
2431                         }
2432                 }
2433         }
2434         TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2435
2436         if (tul_msgin_accept(pCurHcb) != MSG_OUT)
2437                 return (pCurHcb->HCS_Phase);
2438         /* WDTR msg out                 */
2439         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
2440         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 2);
2441         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3);
2442         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[2]);
2443         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2444         return (wait_tulip(pCurHcb));
2445 }
2446
2447 /***************************************************************************/
2448 int tul_msgin_sync(HCS * pCurHcb)
2449 {
2450         char default_period;
2451
2452         default_period = tul_rate_tbl[pCurHcb->HCS_ActTcs->TCS_Flags & TCF_SCSI_RATE];
2453         if (pCurHcb->HCS_Msg[3] > MAX_OFFSET) {
2454                 pCurHcb->HCS_Msg[3] = MAX_OFFSET;
2455                 if (pCurHcb->HCS_Msg[2] < default_period) {
2456                         pCurHcb->HCS_Msg[2] = default_period;
2457                         return 1;
2458                 }
2459                 if (pCurHcb->HCS_Msg[2] >= 59) {        /* Change to async              */
2460                         pCurHcb->HCS_Msg[3] = 0;
2461                 }
2462                 return 1;
2463         }
2464         /* offset requests asynchronous transfers ? */
2465         if (pCurHcb->HCS_Msg[3] == 0) {
2466                 return 0;
2467         }
2468         if (pCurHcb->HCS_Msg[2] < default_period) {
2469                 pCurHcb->HCS_Msg[2] = default_period;
2470                 return 1;
2471         }
2472         if (pCurHcb->HCS_Msg[2] >= 59) {
2473                 pCurHcb->HCS_Msg[3] = 0;
2474                 return 1;
2475         }
2476         return 0;
2477 }
2478
2479
2480 /***************************************************************************/
2481 int wdtr_done(HCS * pCurHcb)
2482 {
2483         pCurHcb->HCS_ActTcs->TCS_Flags &= ~TCF_SYNC_DONE;
2484         pCurHcb->HCS_ActTcs->TCS_Flags |= TCF_WDTR_DONE;
2485
2486         pCurHcb->HCS_ActTcs->TCS_JS_Period = 0;
2487         if (pCurHcb->HCS_Msg[2]) {      /* if 16 bit */
2488                 pCurHcb->HCS_ActTcs->TCS_JS_Period |= TSC_WIDE_SCSI;
2489         }
2490         pCurHcb->HCS_ActTcs->TCS_SConfig0 &= ~TSC_ALT_PERIOD;
2491         TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_ActTcs->TCS_SConfig0);
2492         TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurHcb->HCS_ActTcs->TCS_JS_Period);
2493
2494         return 1;
2495 }
2496
2497 /***************************************************************************/
2498 int tul_sync_done(HCS * pCurHcb)
2499 {
2500         int i;
2501
2502         pCurHcb->HCS_ActTcs->TCS_Flags |= TCF_SYNC_DONE;
2503
2504         if (pCurHcb->HCS_Msg[3]) {
2505                 pCurHcb->HCS_ActTcs->TCS_JS_Period |= pCurHcb->HCS_Msg[3];
2506                 for (i = 0; i < 8; i++) {
2507                         if (tul_rate_tbl[i] >= pCurHcb->HCS_Msg[2])     /* pick the big one */
2508                                 break;
2509                 }
2510                 pCurHcb->HCS_ActTcs->TCS_JS_Period |= (i << 4);
2511                 pCurHcb->HCS_ActTcs->TCS_SConfig0 |= TSC_ALT_PERIOD;
2512         }
2513         TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_ActTcs->TCS_SConfig0);
2514         TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurHcb->HCS_ActTcs->TCS_JS_Period);
2515
2516         return (-1);
2517 }
2518
2519
2520 int tul_post_scsi_rst(HCS * pCurHcb)
2521 {
2522         SCB *pCurScb;
2523         TCS *pCurTcb;
2524         int i;
2525
2526         pCurHcb->HCS_ActScb = NULL;
2527         pCurHcb->HCS_ActTcs = NULL;
2528         pCurHcb->HCS_Flags = 0;
2529
2530         while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) {
2531                 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
2532                 tul_append_done_scb(pCurHcb, pCurScb);
2533         }
2534         /* clear sync done flag         */
2535         pCurTcb = &pCurHcb->HCS_Tcs[0];
2536         for (i = 0; i < pCurHcb->HCS_MaxTar; pCurTcb++, i++) {
2537                 pCurTcb->TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
2538                 /* Initialize the sync. xfer register values to an asyn xfer */
2539                 pCurTcb->TCS_JS_Period = 0;
2540                 pCurTcb->TCS_SConfig0 = pCurHcb->HCS_SConf1;
2541                 pCurHcb->HCS_ActTags[0] = 0;    /* 07/22/98 */
2542                 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~TCF_BUSY;     /* 07/22/98 */
2543         }                       /* for */
2544
2545         return (-1);
2546 }
2547
2548 /***************************************************************************/
2549 void tul_select_atn_stop(HCS * pCurHcb, SCB * pCurScb)
2550 {
2551         pCurScb->SCB_Status |= SCB_SELECT;
2552         pCurScb->SCB_NxtStat = 0x1;
2553         pCurHcb->HCS_ActScb = pCurScb;
2554         pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
2555         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SELATNSTOP);
2556         return;
2557 }
2558
2559
2560 /***************************************************************************/
2561 void tul_select_atn(HCS * pCurHcb, SCB * pCurScb)
2562 {
2563         int i;
2564
2565         pCurScb->SCB_Status |= SCB_SELECT;
2566         pCurScb->SCB_NxtStat = 0x2;
2567
2568         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident);
2569         for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++)
2570                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]);
2571         pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
2572         pCurHcb->HCS_ActScb = pCurScb;
2573         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SEL_ATN);
2574         return;
2575 }
2576
2577 /***************************************************************************/
2578 void tul_select_atn3(HCS * pCurHcb, SCB * pCurScb)
2579 {
2580         int i;
2581
2582         pCurScb->SCB_Status |= SCB_SELECT;
2583         pCurScb->SCB_NxtStat = 0x2;
2584
2585         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident);
2586         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagMsg);
2587         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagId);
2588         for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++)
2589                 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]);
2590         pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
2591         pCurHcb->HCS_ActScb = pCurScb;
2592         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SEL_ATN3);
2593         return;
2594 }
2595
2596 /***************************************************************************/
2597 /* SCSI Bus Device Reset */
2598 int tul_bus_device_reset(HCS * pCurHcb)
2599 {
2600         SCB *pCurScb = pCurHcb->HCS_ActScb;
2601         TCS *pCurTcb = pCurHcb->HCS_ActTcs;
2602         SCB *pTmpScb, *pPrevScb;
2603         BYTE tar;
2604
2605         if (pCurHcb->HCS_Phase != MSG_OUT) {
2606                 return (int_tul_bad_seq(pCurHcb));      /* Unexpected phase             */
2607         }
2608         tul_unlink_pend_scb(pCurHcb, pCurScb);
2609         tul_release_scb(pCurHcb, pCurScb);
2610
2611
2612         tar = pCurScb->SCB_Target;      /* target                       */
2613         pCurTcb->TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE | TCF_BUSY);
2614         /* clr sync. nego & WDTR flags  07/22/98 */
2615
2616         /* abort all SCB with same target */
2617         pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy;    /* Check Busy queue */
2618         while (pTmpScb != NULL) {
2619
2620                 if (pTmpScb->SCB_Target == tar) {
2621                         /* unlink it */
2622                         if (pTmpScb == pCurHcb->HCS_FirstBusy) {
2623                                 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
2624                                         pCurHcb->HCS_LastBusy = NULL;
2625                         } else {
2626                                 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
2627                                 if (pTmpScb == pCurHcb->HCS_LastBusy)
2628                                         pCurHcb->HCS_LastBusy = pPrevScb;
2629                         }
2630                         pTmpScb->SCB_HaStat = HOST_ABORTED;
2631                         tul_append_done_scb(pCurHcb, pTmpScb);
2632                 }
2633                 /* Previous haven't change      */
2634                 else {
2635                         pPrevScb = pTmpScb;
2636                 }
2637                 pTmpScb = pTmpScb->SCB_NxtScb;
2638         }
2639
2640         TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_DEVRST);
2641         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2642
2643         return tul_wait_disc(pCurHcb);
2644
2645 }
2646
2647 /***************************************************************************/
2648 int tul_msgin_accept(HCS * pCurHcb)
2649 {
2650         TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2651         return (wait_tulip(pCurHcb));
2652 }
2653
2654 /***************************************************************************/
2655 int wait_tulip(HCS * pCurHcb)
2656 {
2657
2658         while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0))
2659                  & TSS_INT_PENDING));
2660
2661         pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
2662         pCurHcb->HCS_Phase = pCurHcb->HCS_JSStatus0 & TSS_PH_MASK;
2663         pCurHcb->HCS_JSStatus1 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1);
2664
2665         if (pCurHcb->HCS_JSInt & TSS_RESEL_INT) {       /* if SCSI bus reset detected   */
2666                 return (int_tul_resel(pCurHcb));
2667         }
2668         if (pCurHcb->HCS_JSInt & TSS_SEL_TIMEOUT) {     /* if selected/reselected timeout interrupt */
2669                 return (int_tul_busfree(pCurHcb));
2670         }
2671         if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) {     /* if SCSI bus reset detected   */
2672                 return (int_tul_scsi_rst(pCurHcb));
2673         }
2674         if (pCurHcb->HCS_JSInt & TSS_DISC_INT) {        /* BUS disconnection            */
2675                 if (pCurHcb->HCS_Flags & HCF_EXPECT_DONE_DISC) {
2676                         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);         /* Flush SCSI FIFO  */
2677                         tul_unlink_busy_scb(pCurHcb, pCurHcb->HCS_ActScb);
2678                         pCurHcb->HCS_ActScb->SCB_HaStat = 0;
2679                         tul_append_done_scb(pCurHcb, pCurHcb->HCS_ActScb);
2680                         pCurHcb->HCS_ActScb = NULL;
2681                         pCurHcb->HCS_ActTcs = NULL;
2682                         pCurHcb->HCS_Flags &= ~HCF_EXPECT_DONE_DISC;
2683                         TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2684                         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT);        /* Enable HW reselect       */
2685                         return (-1);
2686                 }
2687                 if (pCurHcb->HCS_Flags & HCF_EXPECT_DISC) {
2688                         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);         /* Flush SCSI FIFO  */
2689                         pCurHcb->HCS_ActScb = NULL;
2690                         pCurHcb->HCS_ActTcs = NULL;
2691                         pCurHcb->HCS_Flags &= ~HCF_EXPECT_DISC;
2692                         TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2693                         TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT);        /* Enable HW reselect       */
2694                         return (-1);
2695                 }
2696                 return (int_tul_busfree(pCurHcb));
2697         }
2698         if (pCurHcb->HCS_JSInt & (TSS_FUNC_COMP | TSS_BUS_SERV)) {
2699                 return (pCurHcb->HCS_Phase);
2700         }
2701         return (pCurHcb->HCS_Phase);
2702 }
2703 /***************************************************************************/
2704 int tul_wait_disc(HCS * pCurHcb)
2705 {
2706
2707         while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0))
2708                  & TSS_INT_PENDING));
2709
2710
2711         pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
2712
2713         if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) {     /* if SCSI bus reset detected   */
2714                 return (int_tul_scsi_rst(pCurHcb));
2715         }
2716         if (pCurHcb->HCS_JSInt & TSS_DISC_INT) {        /* BUS disconnection            */
2717                 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);         /* Flush SCSI FIFO  */
2718                 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2719                 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT);        /* Enable HW reselect       */
2720                 pCurHcb->HCS_ActScb = NULL;
2721                 return (-1);
2722         }
2723         return (tul_bad_seq(pCurHcb));
2724 }
2725
2726 /***************************************************************************/
2727 int tul_wait_done_disc(HCS * pCurHcb)
2728 {
2729
2730
2731         while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0))
2732                  & TSS_INT_PENDING));
2733
2734         pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
2735
2736
2737         if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) {     /* if SCSI bus reset detected   */
2738                 return (int_tul_scsi_rst(pCurHcb));
2739         }
2740         if (pCurHcb->HCS_JSInt & TSS_DISC_INT) {        /* BUS disconnection            */
2741                 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);         /* Flush SCSI FIFO  */
2742                 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2743                 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT);        /* Enable HW reselect       */
2744                 tul_unlink_busy_scb(pCurHcb, pCurHcb->HCS_ActScb);
2745
2746                 tul_append_done_scb(pCurHcb, pCurHcb->HCS_ActScb);
2747                 pCurHcb->HCS_ActScb = NULL;
2748                 return (-1);
2749         }
2750         return (tul_bad_seq(pCurHcb));
2751 }
2752
2753 static irqreturn_t i91u_intr(int irqno, void *dev_id, struct pt_regs *regs)
2754 {
2755         struct Scsi_Host *dev = dev_id;
2756         unsigned long flags;
2757
2758         spin_lock_irqsave(dev->host_lock, flags);
2759         tul_isr((HCS *)dev->base);
2760         spin_unlock_irqrestore(dev->host_lock, flags);
2761         return IRQ_HANDLED;
2762 }
2763
2764 static int tul_NewReturnNumberOfAdapters(void)
2765 {
2766         struct pci_dev *pDev = NULL;    /* Start from none              */
2767         int iAdapters = 0;
2768         long dRegValue;
2769         WORD wBIOS;
2770         int i = 0;
2771
2772         init_i91uAdapter_table();
2773
2774         for (i = 0; i < TULSZ(i91u_pci_devices); i++)
2775         {
2776                 while ((pDev = pci_find_device(i91u_pci_devices[i].vendor_id, i91u_pci_devices[i].device_id, pDev)) != NULL) {
2777                         if (pci_enable_device(pDev))
2778                                 continue;
2779                         pci_read_config_dword(pDev, 0x44, (u32 *) & dRegValue);
2780                         wBIOS = (UWORD) (dRegValue & 0xFF);
2781                         if (((dRegValue & 0xFF00) >> 8) == 0xFF)
2782                                 dRegValue = 0;
2783                         wBIOS = (wBIOS << 8) + ((UWORD) ((dRegValue & 0xFF00) >> 8));
2784                         if (pci_set_dma_mask(pDev, DMA_32BIT_MASK)) {
2785                                 printk(KERN_WARNING
2786                                        "i91u: Could not set 32 bit DMA mask\n");
2787                                 continue;
2788                         }
2789
2790                         if (Addi91u_into_Adapter_table(wBIOS,
2791                                                         (pDev->resource[0].start),
2792                                                         pDev->irq,
2793                                                         pDev->bus->number,
2794                                                         (pDev->devfn >> 3)
2795                                 ) == 0)
2796                                 iAdapters++;
2797                 }
2798         }
2799
2800         return (iAdapters);
2801 }
2802
2803 static int i91u_detect(struct scsi_host_template * tpnt)
2804 {
2805         HCS *pHCB;
2806         struct Scsi_Host *hreg;
2807         unsigned long i;        /* 01/14/98                     */
2808         int ok = 0, iAdapters;
2809         ULONG dBiosAdr;
2810         BYTE *pbBiosAdr;
2811
2812         /* Get total number of adapters in the motherboard */
2813         iAdapters = tul_NewReturnNumberOfAdapters();
2814         if (iAdapters == 0)     /* If no tulip founded, return */
2815                 return (0);
2816
2817         tul_num_ch = (iAdapters > tul_num_ch) ? tul_num_ch : iAdapters;
2818         /* Update actually channel number */
2819         if (tul_tag_enable) {   /* 1.01i                  */
2820                 tul_num_scb = MAX_TARGETS * i91u_MAXQUEUE;
2821         } else {
2822                 tul_num_scb = MAX_TARGETS + 3;  /* 1-tape, 1-CD_ROM, 1- extra */
2823         }                       /* Update actually SCBs per adapter */
2824
2825         /* Get total memory needed for HCS */
2826         i = tul_num_ch * sizeof(HCS);
2827         memset((unsigned char *) &tul_hcs[0], 0, i);    /* Initialize tul_hcs 0 */
2828         /* Get total memory needed for SCB */
2829
2830         for (; tul_num_scb >= MAX_TARGETS + 3; tul_num_scb--) {
2831                 i = tul_num_ch * tul_num_scb * sizeof(SCB);
2832                 if ((tul_scb = (SCB *) kmalloc(i, GFP_ATOMIC | GFP_DMA)) != NULL)
2833                         break;
2834         }
2835         if (tul_scb == NULL) {
2836                 printk("i91u: SCB memory allocation error\n");
2837                 return (0);
2838         }
2839         memset((unsigned char *) tul_scb, 0, i);
2840
2841         for (i = 0, pHCB = &tul_hcs[0];         /* Get pointer for control block */
2842              i < tul_num_ch;
2843              i++, pHCB++) {
2844                 get_tulipPCIConfig(pHCB, i);
2845
2846                 dBiosAdr = pHCB->HCS_BIOS;
2847                 dBiosAdr = (dBiosAdr << 4);
2848
2849                 pbBiosAdr = phys_to_virt(dBiosAdr);
2850
2851                 init_tulip(pHCB, tul_scb + (i * tul_num_scb), tul_num_scb, pbBiosAdr, 10);
2852                 request_region(pHCB->HCS_Base, 256, "i91u"); /* Register */
2853
2854                 pHCB->HCS_Index = i;    /* 7/29/98 */
2855                 hreg = scsi_register(tpnt, sizeof(HCS));
2856                 if(hreg == NULL) {
2857                         release_region(pHCB->HCS_Base, 256);
2858                         return 0;
2859                 }
2860                 hreg->io_port = pHCB->HCS_Base;
2861                 hreg->n_io_port = 0xff;
2862                 hreg->can_queue = tul_num_scb;  /* 03/05/98                      */
2863                 hreg->unique_id = pHCB->HCS_Base;
2864                 hreg->max_id = pHCB->HCS_MaxTar;
2865                 hreg->max_lun = 32;     /* 10/21/97                     */
2866                 hreg->irq = pHCB->HCS_Intr;
2867                 hreg->this_id = pHCB->HCS_SCSI_ID;      /* Assign HCS index           */
2868                 hreg->base = (unsigned long)pHCB;
2869                 hreg->sg_tablesize = TOTAL_SG_ENTRY;    /* Maximun support is 32 */
2870
2871                 /* Initial tulip chip           */
2872                 ok = request_irq(pHCB->HCS_Intr, i91u_intr, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg);
2873                 if (ok < 0) {
2874                         printk(KERN_WARNING "i91u: unable to request IRQ %d\n\n", pHCB->HCS_Intr);
2875                         return 0;
2876                 }
2877         }
2878
2879         tpnt->this_id = -1;
2880         tpnt->can_queue = 1;
2881
2882         return 1;
2883 }
2884
2885 static void i91uBuildSCB(HCS * pHCB, SCB * pSCB, struct scsi_cmnd * SCpnt)
2886 {                               /* Create corresponding SCB     */
2887         struct scatterlist *pSrbSG;
2888         SG *pSG;                /* Pointer to SG list           */
2889         int i;
2890         long TotalLen;
2891         dma_addr_t dma_addr;
2892
2893         pSCB->SCB_Post = i91uSCBPost;   /* i91u's callback routine      */
2894         pSCB->SCB_Srb = SCpnt;
2895         pSCB->SCB_Opcode = ExecSCSI;
2896         pSCB->SCB_Flags = SCF_POST;     /* After SCSI done, call post routine */
2897         pSCB->SCB_Target = SCpnt->device->id;
2898         pSCB->SCB_Lun = SCpnt->device->lun;
2899         pSCB->SCB_Ident = SCpnt->device->lun | DISC_ALLOW;
2900
2901         pSCB->SCB_Flags |= SCF_SENSE;   /* Turn on auto request sense   */
2902         dma_addr = dma_map_single(&pHCB->pci_dev->dev, SCpnt->sense_buffer,
2903                                   SENSE_SIZE, DMA_FROM_DEVICE);
2904         pSCB->SCB_SensePtr = cpu_to_le32((u32)dma_addr);
2905         pSCB->SCB_SenseLen = cpu_to_le32(SENSE_SIZE);
2906         SCpnt->SCp.ptr = (char *)(unsigned long)dma_addr;
2907
2908         pSCB->SCB_CDBLen = SCpnt->cmd_len;
2909         pSCB->SCB_HaStat = 0;
2910         pSCB->SCB_TaStat = 0;
2911         memcpy(&pSCB->SCB_CDB[0], &SCpnt->cmnd, SCpnt->cmd_len);
2912
2913         if (SCpnt->device->tagged_supported) {  /* Tag Support                  */
2914                 pSCB->SCB_TagMsg = SIMPLE_QUEUE_TAG;    /* Do simple tag only   */
2915         } else {
2916                 pSCB->SCB_TagMsg = 0;   /* No tag support               */
2917         }
2918         /* todo handle map_sg error */
2919         if (SCpnt->use_sg) {
2920                 dma_addr = dma_map_single(&pHCB->pci_dev->dev, &pSCB->SCB_SGList[0],
2921                                           sizeof(struct SG_Struc) * TOTAL_SG_ENTRY,
2922                                           DMA_BIDIRECTIONAL);
2923                 pSCB->SCB_BufPtr = cpu_to_le32((u32)dma_addr);
2924                 SCpnt->SCp.dma_handle = dma_addr;
2925
2926                 pSrbSG = (struct scatterlist *) SCpnt->request_buffer;
2927                 pSCB->SCB_SGLen = dma_map_sg(&pHCB->pci_dev->dev, pSrbSG,
2928                                              SCpnt->use_sg, SCpnt->sc_data_direction);
2929
2930                 pSCB->SCB_Flags |= SCF_SG;      /* Turn on SG list flag       */
2931                 for (i = 0, TotalLen = 0, pSG = &pSCB->SCB_SGList[0];   /* 1.01g */
2932                      i < pSCB->SCB_SGLen; i++, pSG++, pSrbSG++) {
2933                         pSG->SG_Ptr = cpu_to_le32((u32)sg_dma_address(pSrbSG));
2934                         TotalLen += pSG->SG_Len = cpu_to_le32((u32)sg_dma_len(pSrbSG));
2935                 }
2936
2937                 pSCB->SCB_BufLen = (SCpnt->request_bufflen > TotalLen) ?
2938                     TotalLen : SCpnt->request_bufflen;
2939         } else if (SCpnt->request_bufflen) {            /* Non SG */
2940                 dma_addr = dma_map_single(&pHCB->pci_dev->dev, SCpnt->request_buffer,
2941                                           SCpnt->request_bufflen,
2942                                           SCpnt->sc_data_direction);
2943                 SCpnt->SCp.dma_handle = dma_addr;
2944                 pSCB->SCB_BufPtr = cpu_to_le32((u32)dma_addr);
2945                 pSCB->SCB_BufLen = cpu_to_le32((u32)SCpnt->request_bufflen);
2946                 pSCB->SCB_SGLen = 0;
2947         } else {
2948                 pSCB->SCB_BufLen = 0;
2949                 pSCB->SCB_SGLen = 0;
2950         }
2951 }
2952
2953 static int i91u_queuecommand(struct scsi_cmnd *cmd,
2954                 void (*done)(struct scsi_cmnd *))
2955 {
2956         HCS *pHCB = (HCS *) cmd->device->host->base;
2957         register SCB *pSCB;
2958
2959         cmd->scsi_done = done;
2960
2961         pSCB = tul_alloc_scb(pHCB);
2962         if (!pSCB)
2963                 return SCSI_MLQUEUE_HOST_BUSY;
2964
2965         i91uBuildSCB(pHCB, pSCB, cmd);
2966         tul_exec_scb(pHCB, pSCB);
2967         return 0;
2968 }
2969
2970 #if 0 /* no new EH yet */
2971 /*
2972  *  Abort a queued command
2973  *  (commands that are on the bus can't be aborted easily)
2974  */
2975 static int i91u_abort(struct scsi_cmnd * SCpnt)
2976 {
2977         HCS *pHCB;
2978
2979         pHCB = (HCS *) SCpnt->device->host->base;
2980         return tul_abort_srb(pHCB, SCpnt);
2981 }
2982
2983 /*
2984  *  Reset registers, reset a hanging bus and
2985  *  kill active and disconnected commands for target w/o soft reset
2986  */
2987 static int i91u_reset(struct scsi_cmnd * SCpnt, unsigned int reset_flags)
2988 {                               /* I need Host Control Block Information */
2989         HCS *pHCB;
2990
2991         pHCB = (HCS *) SCpnt->device->host->base;
2992
2993         if (reset_flags & (SCSI_RESET_SUGGEST_BUS_RESET | SCSI_RESET_SUGGEST_HOST_RESET))
2994                 return tul_reset_scsi_bus(pHCB);
2995         else
2996                 return tul_device_reset(pHCB, SCpnt, SCpnt->device->id, reset_flags);
2997 }
2998 #endif
2999
3000 static int i91u_bus_reset(struct scsi_cmnd * SCpnt)
3001 {
3002         HCS *pHCB;
3003
3004         pHCB = (HCS *) SCpnt->device->host->base;
3005
3006         spin_lock_irq(SCpnt->device->host->host_lock);
3007         tul_reset_scsi(pHCB, 0);
3008         spin_unlock_irq(SCpnt->device->host->host_lock);
3009
3010         return SUCCESS;
3011 }
3012
3013 /*
3014  * Return the "logical geometry"
3015  */
3016 static int i91u_biosparam(struct scsi_device *sdev, struct block_device *dev,
3017                 sector_t capacity, int *info_array)
3018 {
3019         HCS *pHcb;              /* Point to Host adapter control block */
3020         TCS *pTcb;
3021
3022         pHcb = (HCS *) sdev->host->base;
3023         pTcb = &pHcb->HCS_Tcs[sdev->id];
3024
3025         if (pTcb->TCS_DrvHead) {
3026                 info_array[0] = pTcb->TCS_DrvHead;
3027                 info_array[1] = pTcb->TCS_DrvSector;
3028                 info_array[2] = (unsigned long)capacity / pTcb->TCS_DrvHead / pTcb->TCS_DrvSector;
3029         } else {
3030                 if (pTcb->TCS_DrvFlags & TCF_DRV_255_63) {
3031                         info_array[0] = 255;
3032                         info_array[1] = 63;
3033                         info_array[2] = (unsigned long)capacity / 255 / 63;
3034                 } else {
3035                         info_array[0] = 64;
3036                         info_array[1] = 32;
3037                         info_array[2] = (unsigned long)capacity >> 11;
3038                 }
3039         }
3040
3041 #if defined(DEBUG_BIOSPARAM)
3042         if (i91u_debug & debug_biosparam) {
3043                 printk("bios geometry: head=%d, sec=%d, cyl=%d\n",
3044                        info_array[0], info_array[1], info_array[2]);
3045                 printk("WARNING: check, if the bios geometry is correct.\n");
3046         }
3047 #endif
3048
3049         return 0;
3050 }
3051
3052 static void i91u_unmap_cmnd(struct pci_dev *pci_dev, struct scsi_cmnd *cmnd)
3053 {
3054         /* auto sense buffer */
3055         if (cmnd->SCp.ptr) {
3056                 dma_unmap_single(&pci_dev->dev,
3057                                  (dma_addr_t)((unsigned long)cmnd->SCp.ptr),
3058                                  SENSE_SIZE, DMA_FROM_DEVICE);
3059                 cmnd->SCp.ptr = NULL;
3060         }
3061
3062         /* request buffer */
3063         if (cmnd->use_sg) {
3064                 dma_unmap_single(&pci_dev->dev, cmnd->SCp.dma_handle,
3065                                  sizeof(struct SG_Struc) * TOTAL_SG_ENTRY,
3066                                  DMA_BIDIRECTIONAL);
3067
3068                 dma_unmap_sg(&pci_dev->dev, cmnd->request_buffer,
3069                              cmnd->use_sg,
3070                              cmnd->sc_data_direction);
3071         } else if (cmnd->request_bufflen) {
3072                 dma_unmap_single(&pci_dev->dev, cmnd->SCp.dma_handle,
3073                                  cmnd->request_bufflen,
3074                                  cmnd->sc_data_direction);
3075         }
3076 }
3077
3078 /*****************************************************************************
3079  Function name  : i91uSCBPost
3080  Description    : This is callback routine be called when tulip finish one
3081                         SCSI command.
3082  Input          : pHCB  -       Pointer to host adapter control block.
3083                   pSCB  -       Pointer to SCSI control block.
3084  Output         : None.
3085  Return         : None.
3086 *****************************************************************************/
3087 static void i91uSCBPost(BYTE * pHcb, BYTE * pScb)
3088 {
3089         struct scsi_cmnd *pSRB; /* Pointer to SCSI request block */
3090         HCS *pHCB;
3091         SCB *pSCB;
3092
3093         pHCB = (HCS *) pHcb;
3094         pSCB = (SCB *) pScb;
3095         if ((pSRB = pSCB->SCB_Srb) == 0) {
3096                 printk("i91uSCBPost: SRB pointer is empty\n");
3097
3098                 tul_release_scb(pHCB, pSCB);    /* Release SCB for current channel */
3099                 return;
3100         }
3101         switch (pSCB->SCB_HaStat) {
3102         case 0x0:
3103         case 0xa:               /* Linked command complete without error and linked normally */
3104         case 0xb:               /* Linked command complete without error interrupt generated */
3105                 pSCB->SCB_HaStat = 0;
3106                 break;
3107
3108         case 0x11:              /* Selection time out-The initiator selection or target
3109                                    reselection was not complete within the SCSI Time out period */
3110                 pSCB->SCB_HaStat = DID_TIME_OUT;
3111                 break;
3112
3113         case 0x14:              /* Target bus phase sequence failure-An invalid bus phase or bus
3114                                    phase sequence was requested by the target. The host adapter
3115                                    will generate a SCSI Reset Condition, notifying the host with
3116                                    a SCRD interrupt */
3117                 pSCB->SCB_HaStat = DID_RESET;
3118                 break;
3119
3120         case 0x1a:              /* SCB Aborted. 07/21/98 */
3121                 pSCB->SCB_HaStat = DID_ABORT;
3122                 break;
3123
3124         case 0x12:              /* Data overrun/underrun-The target attempted to transfer more data
3125                                    than was allocated by the Data Length field or the sum of the
3126                                    Scatter / Gather Data Length fields. */
3127         case 0x13:              /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */
3128         case 0x16:              /* Invalid SCB Operation Code. */
3129
3130         default:
3131                 printk("ini9100u: %x %x\n", pSCB->SCB_HaStat, pSCB->SCB_TaStat);
3132                 pSCB->SCB_HaStat = DID_ERROR;   /* Couldn't find any better */
3133                 break;
3134         }
3135
3136         pSRB->result = pSCB->SCB_TaStat | (pSCB->SCB_HaStat << 16);
3137
3138         if (pSRB == NULL) {
3139                 printk("pSRB is NULL\n");
3140         }
3141
3142         i91u_unmap_cmnd(pHCB->pci_dev, pSRB);
3143         pSRB->scsi_done(pSRB);  /* Notify system DONE           */
3144
3145         tul_release_scb(pHCB, pSCB);    /* Release SCB for current channel */
3146 }
3147
3148 /*
3149  * Release ressources
3150  */
3151 static int i91u_release(struct Scsi_Host *hreg)
3152 {
3153         free_irq(hreg->irq, hreg);
3154         release_region(hreg->io_port, 256);
3155         return 0;
3156 }
3157 MODULE_LICENSE("Dual BSD/GPL");
3158
3159 static struct scsi_host_template driver_template = {
3160         .proc_name      = "INI9100U",
3161         .name           = i91u_REVID,
3162         .detect         = i91u_detect,
3163         .release        = i91u_release,
3164         .queuecommand   = i91u_queuecommand,
3165 //      .abort          = i91u_abort,
3166 //      .reset          = i91u_reset,
3167         .eh_bus_reset_handler = i91u_bus_reset,
3168         .bios_param     = i91u_biosparam,
3169         .can_queue      = 1,
3170         .this_id        = 1,
3171         .sg_tablesize   = SG_ALL,
3172         .cmd_per_lun    = 1,
3173         .use_clustering = ENABLE_CLUSTERING,
3174 };
3175 #include "scsi_module.c"
3176