drivers/scsi/qlogicfc.c

   1 /*
   2  * QLogic ISP2x00 SCSI-FCP
   3  * Written by Erik H. Moe, ehm@cris.com
   4  * Copyright 1995, Erik H. Moe
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2, or (at your option) any
   9  * later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  */
  16
  17 /* Renamed and updated to 1.3.x by Michael Griffith <grif@cs.ucr.edu> */
  18
  19 /* This is a version of the isp1020 driver which was modified by
  20  * Chris Loveland <cwl@iol.unh.edu> to support the isp2100 and isp2200
  21  *
  22  * Big endian support and dynamic DMA mapping added
  23  * by Jakub Jelinek <jakub@redhat.com>.
  24  *
  25  * Conversion to final pci64 DMA interfaces
  26  * by David S. Miller <davem@redhat.com>.
  27  */
  28
  29 /*
  30  * $Date: 1995/09/22 02:23:15 $
  31  * $Revision: 0.5 $
  32  *
  33  * $Log: isp1020.c,v $
  34  * Revision 0.5  1995/09/22  02:23:15  root
  35  * do auto request sense
  36  *
  37  * Revision 0.4  1995/08/07  04:44:33  root
  38  * supply firmware with driver.
  39  * numerous bug fixes/general cleanup of code.
  40  *
  41  * Revision 0.3  1995/07/16  16:15:39  root
  42  * added reset/abort code.
  43  *
  44  * Revision 0.2  1995/06/29  03:14:19  root
  45  * fixed biosparam.
  46  * added queue protocol.
  47  *
  48  * Revision 0.1  1995/06/25  01:55:45  root
  49  * Initial release.
  50  *
  51  */
  52
  53 #include <linux/blkdev.h>
  54 #include <linux/kernel.h>
  55 #include <linux/string.h>
  56 #include <linux/ioport.h>
  57 #include <linux/sched.h>
  58 #include <linux/types.h>
  59 #include <linux/pci.h>
  60 #include <linux/delay.h>
  61 #include <linux/unistd.h>
  62 #include <linux/spinlock.h>
  63 #include <linux/interrupt.h>
  64 #include <asm/io.h>
  65 #include <asm/irq.h>
  66 #include "scsi.h"
  67 #include "hosts.h"
  68
  69 #define pci64_dma_hi32(a) ((u32) (0xffffffff & (((u64)(a))>>32)))
  70 #define pci64_dma_lo32(a) ((u32) (0xffffffff & (((u64)(a)))))
  71 #define pci64_dma_build(hi,lo) \
  72         ((dma_addr_t)(((u64)(lo))|(((u64)(hi))<<32)))
  73
  74 #include "qlogicfc.h"
  75
  76 /* Configuration section **************************************************** */
  77
  78 /* Set the following macro to 1 to reload the ISP2x00's firmware.  This is
  79    version 1.17.30 of the isp2100's firmware and version 2.00.40 of the
  80    isp2200's firmware.
  81 */
  82
  83 #define USE_NVRAM_DEFAULTS      1
  84
  85 #define ISP2x00_PORTDB          1
  86
  87 /* Set the following to 1 to include fabric support, fabric support is
  88  * currently not as well tested as the other aspects of the driver */
  89
  90 #define ISP2x00_FABRIC          1
  91
  92 /*  Macros used for debugging */
  93 #define DEBUG_ISP2x00           0
  94 #define DEBUG_ISP2x00_INT       0
  95 #define DEBUG_ISP2x00_INTR      0
  96 #define DEBUG_ISP2x00_SETUP     0
  97 #define DEBUG_ISP2x00_FABRIC    0
  98 #define TRACE_ISP               0
  99
 100
 101 #define DEFAULT_LOOP_COUNT      1000000000
 102
 103 /* End Configuration section ************************************************ */
 104
 105 #include <linux/module.h>
 106
 107 #if TRACE_ISP
 108
 109 #define TRACE_BUF_LEN   (32*1024)
 110
 111 struct {
 112         u_long next;
 113         struct {
 114                 u_long time;
 115                 u_int index;
 116                 u_int addr;
 117                 u_char *name;
 118         } buf[TRACE_BUF_LEN];
 119 } trace;
 120
 121 #define TRACE(w, i, a)                                          \
 122 {                                                               \
 123         unsigned long flags;                                    \
 124                                                                 \
 125         save_flags(flags);                                      \
 126         cli();                                                  \
 127         trace.buf[trace.next].name  = (w);                      \
 128         trace.buf[trace.next].time  = jiffies;                  \
 129         trace.buf[trace.next].index = (i);                      \
 130         trace.buf[trace.next].addr  = (long) (a);               \
 131         trace.next = (trace.next + 1) & (TRACE_BUF_LEN - 1);    \
 132         restore_flags(flags);                                   \
 133 }
 134
 135 #else
 136 #define TRACE(w, i, a)
 137 #endif
 138
 139 #if DEBUG_ISP2x00_FABRIC
 140 #define DEBUG_FABRIC(x) x
 141 #else
 142 #define DEBUG_FABRIC(x)
 143 #endif                          /* DEBUG_ISP2x00_FABRIC */
 144
 145
 146 #if DEBUG_ISP2x00
 147 #define ENTER(x)        printk("isp2x00 : entering %s()\n", x);
 148 #define LEAVE(x)        printk("isp2x00 : leaving %s()\n", x);
 149 #define DEBUG(x)        x
 150 #else
 151 #define ENTER(x)
 152 #define LEAVE(x)
 153 #define DEBUG(x)
 154 #endif                          /* DEBUG_ISP2x00 */
 155
 156 #if DEBUG_ISP2x00_INTR
 157 #define ENTER_INTR(x)   printk("isp2x00 : entering %s()\n", x);
 158 #define LEAVE_INTR(x)   printk("isp2x00 : leaving %s()\n", x);
 159 #define DEBUG_INTR(x)   x
 160 #else
 161 #define ENTER_INTR(x)
 162 #define LEAVE_INTR(x)
 163 #define DEBUG_INTR(x)
 164 #endif                          /* DEBUG ISP2x00_INTR */
 165
 166
 167 #define ISP2100_REV_ID1        1
 168 #define ISP2100_REV_ID3        3
 169 #define ISP2200_REV_ID5        5
 170
 171 /* host configuration and control registers */
 172 #define HOST_HCCR       0xc0    /* host command and control */
 173
 174 /* pci bus interface registers */
 175 #define FLASH_BIOS_ADDR 0x00
 176 #define FLASH_BIOS_DATA 0x02
 177 #define ISP_CTRL_STATUS 0x06    /* configuration register #1 */
 178 #define PCI_INTER_CTL   0x08    /* pci interrupt control */
 179 #define PCI_INTER_STS   0x0a    /* pci interrupt status */
 180 #define PCI_SEMAPHORE   0x0c    /* pci semaphore */
 181 #define PCI_NVRAM       0x0e    /* pci nvram interface */
 182
 183 /* mailbox registers */
 184 #define MBOX0           0x10    /* mailbox 0 */
 185 #define MBOX1           0x12    /* mailbox 1 */
 186 #define MBOX2           0x14    /* mailbox 2 */
 187 #define MBOX3           0x16    /* mailbox 3 */
 188 #define MBOX4           0x18    /* mailbox 4 */
 189 #define MBOX5           0x1a    /* mailbox 5 */
 190 #define MBOX6           0x1c    /* mailbox 6 */
 191 #define MBOX7           0x1e    /* mailbox 7 */
 192
 193 /* mailbox command complete status codes */
 194 #define MBOX_COMMAND_COMPLETE           0x4000
 195 #define INVALID_COMMAND                 0x4001
 196 #define HOST_INTERFACE_ERROR            0x4002
 197 #define TEST_FAILED                     0x4003
 198 #define COMMAND_ERROR                   0x4005
 199 #define COMMAND_PARAM_ERROR             0x4006
 200 #define PORT_ID_USED                    0x4007
 201 #define LOOP_ID_USED                    0x4008
 202 #define ALL_IDS_USED                    0x4009
 203
 204 /* async event status codes */
 205 #define RESET_DETECTED                  0x8001
 206 #define SYSTEM_ERROR                    0x8002
 207 #define REQUEST_TRANSFER_ERROR          0x8003
 208 #define RESPONSE_TRANSFER_ERROR         0x8004
 209 #define REQUEST_QUEUE_WAKEUP            0x8005
 210 #define LIP_OCCURRED                     0x8010
 211 #define LOOP_UP                         0x8011
 212 #define LOOP_DOWN                       0x8012
 213 #define LIP_RECEIVED                    0x8013
 214 #define PORT_DB_CHANGED                 0x8014
 215 #define CHANGE_NOTIFICATION             0x8015
 216 #define SCSI_COMMAND_COMPLETE           0x8020
 217 #define POINT_TO_POINT_UP               0x8030
 218 #define CONNECTION_MODE                 0x8036
 219
 220 struct Entry_header {
 221         u_char entry_type;
 222         u_char entry_cnt;
 223         u_char sys_def_1;
 224         u_char flags;
 225 };
 226
 227 /* entry header type commands */
 228 #define ENTRY_COMMAND           0x19
 229 #define ENTRY_CONTINUATION      0x0a
 230
 231 #define ENTRY_STATUS            0x03
 232 #define ENTRY_MARKER            0x04
 233
 234
 235 /* entry header flag definitions */
 236 #define EFLAG_BUSY              2
 237 #define EFLAG_BAD_HEADER        4
 238 #define EFLAG_BAD_PAYLOAD       8
 239
 240 struct dataseg {
 241         u_int d_base;
 242         u_int d_base_hi;
 243         u_int d_count;
 244 };
 245
 246 struct Command_Entry {
 247         struct Entry_header hdr;
 248         u_int handle;
 249         u_char target_lun;
 250         u_char target_id;
 251         u_short expanded_lun;
 252         u_short control_flags;
 253         u_short rsvd2;
 254         u_short time_out;
 255         u_short segment_cnt;
 256         u_char cdb[16];
 257         u_int total_byte_cnt;
 258         struct dataseg dataseg[DATASEGS_PER_COMMAND];
 259 };
 260
 261 /* command entry control flag definitions */
 262 #define CFLAG_NODISC            0x01
 263 #define CFLAG_HEAD_TAG          0x02
 264 #define CFLAG_ORDERED_TAG       0x04
 265 #define CFLAG_SIMPLE_TAG        0x08
 266 #define CFLAG_TAR_RTN           0x10
 267 #define CFLAG_READ              0x20
 268 #define CFLAG_WRITE             0x40
 269
 270 struct Continuation_Entry {
 271         struct Entry_header hdr;
 272         struct dataseg dataseg[DATASEGS_PER_CONT];
 273 };
 274
 275 struct Marker_Entry {
 276         struct Entry_header hdr;
 277         u_int reserved;
 278         u_char target_lun;
 279         u_char target_id;
 280         u_char modifier;
 281         u_char expanded_lun;
 282         u_char rsvds[52];
 283 };
 284
 285 /* marker entry modifier definitions */
 286 #define SYNC_DEVICE     0
 287 #define SYNC_TARGET     1
 288 #define SYNC_ALL        2
 289
 290 struct Status_Entry {
 291         struct Entry_header hdr;
 292         u_int handle;
 293         u_short scsi_status;
 294         u_short completion_status;
 295         u_short state_flags;
 296         u_short status_flags;
 297         u_short res_info_len;
 298         u_short req_sense_len;
 299         u_int residual;
 300         u_char res_info[8];
 301         u_char req_sense_data[32];
 302 };
 303
 304 /* status entry completion status definitions */
 305 #define CS_COMPLETE                     0x0000
 306 #define CS_DMA_ERROR                    0x0002
 307 #define CS_RESET_OCCURRED               0x0004
 308 #define CS_ABORTED                      0x0005
 309 #define CS_TIMEOUT                      0x0006
 310 #define CS_DATA_OVERRUN                 0x0007
 311 #define CS_DATA_UNDERRUN                0x0015
 312 #define CS_QUEUE_FULL                   0x001c
 313 #define CS_PORT_UNAVAILABLE             0x0028
 314 #define CS_PORT_LOGGED_OUT              0x0029
 315 #define CS_PORT_CONFIG_CHANGED          0x002a
 316
 317 /* status entry state flag definitions */
 318 #define SF_SENT_CDB                     0x0400
 319 #define SF_TRANSFERRED_DATA             0x0800
 320 #define SF_GOT_STATUS                   0x1000
 321
 322 /* status entry status flag definitions */
 323 #define STF_BUS_RESET                   0x0008
 324 #define STF_DEVICE_RESET                0x0010
 325 #define STF_ABORTED                     0x0020
 326 #define STF_TIMEOUT                     0x0040
 327
 328 /* interrupt control commands */
 329 #define ISP_EN_INT                      0x8000
 330 #define ISP_EN_RISC                     0x0008
 331
 332 /* host control commands */
 333 #define HCCR_NOP                        0x0000
 334 #define HCCR_RESET                      0x1000
 335 #define HCCR_PAUSE                      0x2000
 336 #define HCCR_RELEASE                    0x3000
 337 #define HCCR_SINGLE_STEP                0x4000
 338 #define HCCR_SET_HOST_INTR              0x5000
 339 #define HCCR_CLEAR_HOST_INTR            0x6000
 340 #define HCCR_CLEAR_RISC_INTR            0x7000
 341 #define HCCR_BP_ENABLE                  0x8000
 342 #define HCCR_BIOS_DISABLE               0x9000
 343 #define HCCR_TEST_MODE                  0xf000
 344
 345 #define RISC_BUSY                       0x0004
 346
 347 /* mailbox commands */
 348 #define MBOX_NO_OP                      0x0000
 349 #define MBOX_LOAD_RAM                   0x0001
 350 #define MBOX_EXEC_FIRMWARE              0x0002
 351 #define MBOX_DUMP_RAM                   0x0003
 352 #define MBOX_WRITE_RAM_WORD             0x0004
 353 #define MBOX_READ_RAM_WORD              0x0005
 354 #define MBOX_MAILBOX_REG_TEST           0x0006
 355 #define MBOX_VERIFY_CHECKSUM            0x0007
 356 #define MBOX_ABOUT_FIRMWARE             0x0008
 357 #define MBOX_LOAD_RISC_RAM              0x0009
 358 #define MBOX_DUMP_RISC_RAM              0x000a
 359 #define MBOX_CHECK_FIRMWARE             0x000e
 360 #define MBOX_INIT_REQ_QUEUE             0x0010
 361 #define MBOX_INIT_RES_QUEUE             0x0011
 362 #define MBOX_EXECUTE_IOCB               0x0012
 363 #define MBOX_WAKE_UP                    0x0013
 364 #define MBOX_STOP_FIRMWARE              0x0014
 365 #define MBOX_ABORT_IOCB                 0x0015
 366 #define MBOX_ABORT_DEVICE               0x0016
 367 #define MBOX_ABORT_TARGET               0x0017
 368 #define MBOX_BUS_RESET                  0x0018
 369 #define MBOX_STOP_QUEUE                 0x0019
 370 #define MBOX_START_QUEUE                0x001a
 371 #define MBOX_SINGLE_STEP_QUEUE          0x001b
 372 #define MBOX_ABORT_QUEUE                0x001c
 373 #define MBOX_GET_DEV_QUEUE_STATUS       0x001d
 374 #define MBOX_GET_FIRMWARE_STATUS        0x001f
 375 #define MBOX_GET_INIT_SCSI_ID           0x0020
 376 #define MBOX_GET_RETRY_COUNT            0x0022
 377 #define MBOX_GET_TARGET_PARAMS          0x0028
 378 #define MBOX_GET_DEV_QUEUE_PARAMS       0x0029
 379 #define MBOX_SET_RETRY_COUNT            0x0032
 380 #define MBOX_SET_TARGET_PARAMS          0x0038
 381 #define MBOX_SET_DEV_QUEUE_PARAMS       0x0039
 382 #define MBOX_EXECUTE_IOCB64             0x0054
 383 #define MBOX_INIT_FIRMWARE              0x0060
 384 #define MBOX_GET_INIT_CB                0x0061
 385 #define MBOX_INIT_LIP                   0x0062
 386 #define MBOX_GET_POS_MAP                0x0063
 387 #define MBOX_GET_PORT_DB                0x0064
 388 #define MBOX_CLEAR_ACA                  0x0065
 389 #define MBOX_TARGET_RESET               0x0066
 390 #define MBOX_CLEAR_TASK_SET             0x0067
 391 #define MBOX_ABORT_TASK_SET             0x0068
 392 #define MBOX_GET_FIRMWARE_STATE         0x0069
 393 #define MBOX_GET_PORT_NAME              0x006a
 394 #define MBOX_SEND_SNS                   0x006e
 395 #define MBOX_PORT_LOGIN                 0x006f
 396 #define MBOX_SEND_CHANGE_REQUEST        0x0070
 397 #define MBOX_PORT_LOGOUT                0x0071
 398
 399 /*
 400  *      Firmware if needed (note this is a hack, it belongs in a separate
 401  *      module.
 402  */
 403
 404 #ifdef CONFIG_SCSI_QLOGIC_FC_FIRMWARE
 405 #include "qlogicfc_asm.c"
 406 #else
 407 static unsigned short risc_code_addr01 = 0x1000 ;
 408 #endif
 409
 410 /* Each element in mbox_param is an 8 bit bitmap where each bit indicates
 411    if that mbox should be copied as input.  For example 0x2 would mean
 412    only copy mbox1. */
 413
 414 static const u_char mbox_param[] =
 415 {
 416         0x01,                   /* MBOX_NO_OP */
 417         0x1f,                   /* MBOX_LOAD_RAM */
 418         0x03,                   /* MBOX_EXEC_FIRMWARE */
 419         0x1f,                   /* MBOX_DUMP_RAM */
 420         0x07,                   /* MBOX_WRITE_RAM_WORD */
 421         0x03,                   /* MBOX_READ_RAM_WORD */
 422         0xff,                   /* MBOX_MAILBOX_REG_TEST */
 423         0x03,                   /* MBOX_VERIFY_CHECKSUM */
 424         0x01,                   /* MBOX_ABOUT_FIRMWARE */
 425         0xff,                   /* MBOX_LOAD_RISC_RAM */
 426         0xff,                   /* MBOX_DUMP_RISC_RAM */
 427         0x00,                   /* 0x000b */
 428         0x00,                   /* 0x000c */
 429         0x00,                   /* 0x000d */
 430         0x01,                   /* MBOX_CHECK_FIRMWARE */
 431         0x00,                   /* 0x000f */
 432         0x1f,                   /* MBOX_INIT_REQ_QUEUE */
 433         0x2f,                   /* MBOX_INIT_RES_QUEUE */
 434         0x0f,                   /* MBOX_EXECUTE_IOCB */
 435         0x03,                   /* MBOX_WAKE_UP */
 436         0x01,                   /* MBOX_STOP_FIRMWARE */
 437         0x0f,                   /* MBOX_ABORT_IOCB */
 438         0x03,                   /* MBOX_ABORT_DEVICE */
 439         0x07,                   /* MBOX_ABORT_TARGET */
 440         0x03,                   /* MBOX_BUS_RESET */
 441         0x03,                   /* MBOX_STOP_QUEUE */
 442         0x03,                   /* MBOX_START_QUEUE */
 443         0x03,                   /* MBOX_SINGLE_STEP_QUEUE */
 444         0x03,                   /* MBOX_ABORT_QUEUE */
 445         0x03,                   /* MBOX_GET_DEV_QUEUE_STATUS */
 446         0x00,                   /* 0x001e */
 447         0x01,                   /* MBOX_GET_FIRMWARE_STATUS */
 448         0x01,                   /* MBOX_GET_INIT_SCSI_ID */
 449         0x00,                   /* 0x0021 */
 450         0x01,                   /* MBOX_GET_RETRY_COUNT */
 451         0x00,                   /* 0x0023 */
 452         0x00,                   /* 0x0024 */
 453         0x00,                   /* 0x0025 */
 454         0x00,                   /* 0x0026 */
 455         0x00,                   /* 0x0027 */
 456         0x03,                   /* MBOX_GET_TARGET_PARAMS */
 457         0x03,                   /* MBOX_GET_DEV_QUEUE_PARAMS */
 458         0x00,                   /* 0x002a */
 459         0x00,                   /* 0x002b */
 460         0x00,                   /* 0x002c */
 461         0x00,                   /* 0x002d */
 462         0x00,                   /* 0x002e */
 463         0x00,                   /* 0x002f */
 464         0x00,                   /* 0x0030 */
 465         0x00,                   /* 0x0031 */
 466         0x07,                   /* MBOX_SET_RETRY_COUNT */
 467         0x00,                   /* 0x0033 */
 468         0x00,                   /* 0x0034 */
 469         0x00,                   /* 0x0035 */
 470         0x00,                   /* 0x0036 */
 471         0x00,                   /* 0x0037 */
 472         0x0f,                   /* MBOX_SET_TARGET_PARAMS */
 473         0x0f,                   /* MBOX_SET_DEV_QUEUE_PARAMS */
 474         0x00,                   /* 0x003a */
 475         0x00,                   /* 0x003b */
 476         0x00,                   /* 0x003c */
 477         0x00,                   /* 0x003d */
 478         0x00,                   /* 0x003e */
 479         0x00,                   /* 0x003f */
 480         0x00,                   /* 0x0040 */
 481         0x00,                   /* 0x0041 */
 482         0x00,                   /* 0x0042 */
 483         0x00,                   /* 0x0043 */
 484         0x00,                   /* 0x0044 */
 485         0x00,                   /* 0x0045 */
 486         0x00,                   /* 0x0046 */
 487         0x00,                   /* 0x0047 */
 488         0x00,                   /* 0x0048 */
 489         0x00,                   /* 0x0049 */
 490         0x00,                   /* 0x004a */
 491         0x00,                   /* 0x004b */
 492         0x00,                   /* 0x004c */
 493         0x00,                   /* 0x004d */
 494         0x00,                   /* 0x004e */
 495         0x00,                   /* 0x004f */
 496         0x00,                   /* 0x0050 */
 497         0x00,                   /* 0x0051 */
 498         0x00,                   /* 0x0052 */
 499         0x00,                   /* 0x0053 */
 500         0xcf,                   /* MBOX_EXECUTE_IOCB64 */
 501         0x00,                   /* 0x0055 */
 502         0x00,                   /* 0x0056 */
 503         0x00,                   /* 0x0057 */
 504         0x00,                   /* 0x0058 */
 505         0x00,                   /* 0x0059 */
 506         0x00,                   /* 0x005a */
 507         0x00,                   /* 0x005b */
 508         0x00,                   /* 0x005c */
 509         0x00,                   /* 0x005d */
 510         0x00,                   /* 0x005e */
 511         0x00,                   /* 0x005f */
 512         0xff,                   /* MBOX_INIT_FIRMWARE */
 513         0xcd,                   /* MBOX_GET_INIT_CB */
 514         0x01,                   /* MBOX_INIT_LIP */
 515         0xcd,                   /* MBOX_GET_POS_MAP */
 516         0xcf,                   /* MBOX_GET_PORT_DB */
 517         0x03,                   /* MBOX_CLEAR_ACA */
 518         0x03,                   /* MBOX_TARGET_RESET */
 519         0x03,                   /* MBOX_CLEAR_TASK_SET */
 520         0x03,                   /* MBOX_ABORT_TASK_SET */
 521         0x01,                   /* MBOX_GET_FIRMWARE_STATE */
 522         0x03,                   /* MBOX_GET_PORT_NAME */
 523         0x00,                   /* 0x006b */
 524         0x00,                   /* 0x006c */
 525         0x00,                   /* 0x006d */
 526         0xcf,                   /* MBOX_SEND_SNS */
 527         0x0f,                   /* MBOX_PORT_LOGIN */
 528         0x03,                   /* MBOX_SEND_CHANGE_REQUEST */
 529         0x03,                   /* MBOX_PORT_LOGOUT */
 530 };
 531
 532 #define MAX_MBOX_COMMAND        (sizeof(mbox_param)/sizeof(u_short))
 533
 534
 535 struct id_name_map {
 536         u64 wwn;
 537         u_char loop_id;
 538 };
 539
 540 struct sns_cb {
 541         u_short len;
 542         u_short res1;
 543         u_int response_low;
 544         u_int response_high;
 545         u_short sub_len;
 546         u_short res2;
 547         u_char data[44];
 548 };
 549
 550 /* address of instance of this struct is passed to adapter to initialize things
 551  */
 552 struct init_cb {
 553         u_char version;
 554         u_char reseverd1[1];
 555         u_short firm_opts;
 556         u_short max_frame_len;
 557         u_short max_iocb;
 558         u_short exec_throttle;
 559         u_char retry_cnt;
 560         u_char retry_delay;
 561         u_short node_name[4];
 562         u_short hard_addr;
 563         u_char reserved2[10];
 564         u_short req_queue_out;
 565         u_short res_queue_in;
 566         u_short req_queue_len;
 567         u_short res_queue_len;
 568         u_int req_queue_addr_lo;
 569         u_int req_queue_addr_high;
 570         u_int res_queue_addr_lo;
 571         u_int res_queue_addr_high;
 572         /* the rest of this structure only applies to the isp2200 */
 573         u_short lun_enables;
 574         u_char cmd_resource_cnt;
 575         u_char notify_resource_cnt;
 576         u_short timeout;
 577         u_short reserved3;
 578         u_short add_firm_opts;
 579         u_char res_accum_timer;
 580         u_char irq_delay_timer;
 581         u_short special_options;
 582         u_short reserved4[13];
 583 };
 584
 585 /*
 586  * The result queue can be quite a bit smaller since continuation entries
 587  * do not show up there:
 588  */
 589 #define RES_QUEUE_LEN           ((QLOGICFC_REQ_QUEUE_LEN + 1) / 8 - 1)
 590 #define QUEUE_ENTRY_LEN         64
 591
 592 #if ISP2x00_FABRIC
 593 #define QLOGICFC_MAX_ID    0xff
 594 #else
 595 #define QLOGICFC_MAX_ID    0x7d
 596 #endif
 597
 598 #define QLOGICFC_MAX_LUN        128
 599 #define QLOGICFC_MAX_LOOP_ID    0x7d
 600
 601 /* the following connection options only apply to the 2200.  i have only
 602  * had success with LOOP_ONLY and P2P_ONLY.
 603  */
 604
 605 #define LOOP_ONLY              0
 606 #define P2P_ONLY               1
 607 #define LOOP_PREFERED          2
 608 #define P2P_PREFERED           3
 609
 610 #define CONNECTION_PREFERENCE  LOOP_ONLY
 611
 612 /* adapter_state values */
 613 #define AS_FIRMWARE_DEAD      -1
 614 #define AS_LOOP_DOWN           0
 615 #define AS_LOOP_GOOD           1
 616 #define AS_REDO_FABRIC_PORTDB  2
 617 #define AS_REDO_LOOP_PORTDB    4
 618
 619 #define RES_SIZE        ((RES_QUEUE_LEN + 1)*QUEUE_ENTRY_LEN)
 620 #define REQ_SIZE        ((QLOGICFC_REQ_QUEUE_LEN + 1)*QUEUE_ENTRY_LEN)
 621
 622 struct isp2x00_hostdata {
 623         u_char revision;
 624         struct pci_dev *pci_dev;
 625         /* result and request queues (shared with isp2x00): */
 626         u_int req_in_ptr;       /* index of next request slot */
 627         u_int res_out_ptr;      /* index of next result slot */
 628
 629         /* this is here so the queues are nicely aligned */
 630         long send_marker;       /* do we need to send a marker? */
 631
 632         char * res;
 633         char * req;
 634         struct init_cb control_block;
 635         int adapter_state;
 636         unsigned long int tag_ages[QLOGICFC_MAX_ID + 1];
 637         Scsi_Cmnd *handle_ptrs[QLOGICFC_REQ_QUEUE_LEN + 1];
 638         unsigned long handle_serials[QLOGICFC_REQ_QUEUE_LEN + 1];
 639         struct id_name_map port_db[QLOGICFC_MAX_ID + 1];
 640         u_char mbox_done;
 641         u64 wwn;
 642         u_int port_id;
 643         u_char queued;
 644         u_char host_id;
 645         struct timer_list explore_timer;
 646         struct id_name_map tempmap[QLOGICFC_MAX_ID + 1];
 647 };
 648
 649
 650 /* queue length's _must_ be power of two: */
 651 #define QUEUE_DEPTH(in, out, ql)        ((in - out) & (ql))
 652 #define REQ_QUEUE_DEPTH(in, out)        QUEUE_DEPTH(in, out,                 \
 653                                                     QLOGICFC_REQ_QUEUE_LEN)
 654 #define RES_QUEUE_DEPTH(in, out)        QUEUE_DEPTH(in, out, RES_QUEUE_LEN)
 655
 656 static void isp2x00_enable_irqs(struct Scsi_Host *);
 657 static void isp2x00_disable_irqs(struct Scsi_Host *);
 658 static int isp2x00_init(struct Scsi_Host *);
 659 static int isp2x00_reset_hardware(struct Scsi_Host *);
 660 static int isp2x00_mbox_command(struct Scsi_Host *, u_short[]);
 661 static int isp2x00_return_status(Scsi_Cmnd *, struct Status_Entry *);
 662 static void isp2x00_intr_handler(int, void *, struct pt_regs *);
 663 static irqreturn_t do_isp2x00_intr_handler(int, void *, struct pt_regs *);
 664 static int isp2x00_make_portdb(struct Scsi_Host *);
 665
 666 #if ISP2x00_FABRIC
 667 static int isp2x00_init_fabric(struct Scsi_Host *, struct id_name_map *, int);
 668 #endif
 669
 670 #if USE_NVRAM_DEFAULTS
 671 static int isp2x00_get_nvram_defaults(struct Scsi_Host *, struct init_cb *);
 672 static u_short isp2x00_read_nvram_word(struct Scsi_Host *, u_short);
 673 #endif
 674
 675 #if DEBUG_ISP2x00
 676 static void isp2x00_print_scsi_cmd(Scsi_Cmnd *);
 677 #endif
 678
 679 #if DEBUG_ISP2x00_INTR
 680 static void isp2x00_print_status_entry(struct Status_Entry *);
 681 #endif
 682
 683 static inline void isp2x00_enable_irqs(struct Scsi_Host *host)
 684 {
 685         outw(ISP_EN_INT | ISP_EN_RISC, host->io_port + PCI_INTER_CTL);
 686 }
 687
 688
 689 static inline void isp2x00_disable_irqs(struct Scsi_Host *host)
 690 {
 691         outw(0x0, host->io_port + PCI_INTER_CTL);
 692 }
 693
 694
 695 int isp2x00_detect(Scsi_Host_Template * tmpt)
 696 {
 697         int hosts = 0;
 698         unsigned long wait_time;
 699         struct Scsi_Host *host = NULL;
 700         struct isp2x00_hostdata *hostdata;
 701         struct pci_dev *pdev;
 702         unsigned short device_ids[2];
 703         dma_addr_t busaddr;
 704         int i;
 705
 706
 707         ENTER("isp2x00_detect");
 708
 709         device_ids[0] = PCI_DEVICE_ID_QLOGIC_ISP2100;
 710         device_ids[1] = PCI_DEVICE_ID_QLOGIC_ISP2200;
 711
 712         tmpt->proc_name = "isp2x00";
 713
 714         for (i=0; i<2; i++){
 715                 pdev = NULL;
 716                 while ((pdev = pci_find_device(PCI_VENDOR_ID_QLOGIC, device_ids[i], pdev))) {
 717                         if (pci_enable_device(pdev))
 718                                 continue;
 719
 720                         /* Try to configure DMA attributes. */
 721                         if (pci_set_dma_mask(pdev, 0xffffffffffffffffULL) &&
 722                             pci_set_dma_mask(pdev, 0xffffffffULL))
 723                                         continue;
 724
 725                         host = scsi_register(tmpt, sizeof(struct isp2x00_hostdata));
 726                         if (!host) {
 727                                 printk("qlogicfc%d : could not register host.\n", hosts);
 728                                 continue;
 729                         }
 730                         scsi_set_device(host, &pdev->dev);
 731                         host->max_id = QLOGICFC_MAX_ID + 1;
 732                         host->max_lun = QLOGICFC_MAX_LUN;
 733                         hostdata = (struct isp2x00_hostdata *) host->hostdata;
 734
 735                         memset(hostdata, 0, sizeof(struct isp2x00_hostdata));
 736                         hostdata->pci_dev = pdev;
 737                         hostdata->res = pci_alloc_consistent(pdev, RES_SIZE + REQ_SIZE, &busaddr);
 738
 739                         if (!hostdata->res){
 740                                 printk("qlogicfc%d : could not allocate memory for request and response queue.\n", hosts);
 741                                 scsi_unregister(host);
 742                                 continue;
 743                         }
 744                         hostdata->req = hostdata->res + (RES_QUEUE_LEN + 1)*QUEUE_ENTRY_LEN;
 745                         hostdata->queued = 0;
 746                         /* set up the control block */
 747                         hostdata->control_block.version = 0x1;
 748                         hostdata->control_block.firm_opts = cpu_to_le16(0x800e);
 749                         hostdata->control_block.max_frame_len = cpu_to_le16(2048);
 750                         hostdata->control_block.max_iocb = cpu_to_le16(QLOGICFC_REQ_QUEUE_LEN);
 751                         hostdata->control_block.exec_throttle = cpu_to_le16(QLOGICFC_CMD_PER_LUN);
 752                         hostdata->control_block.retry_delay = 5;
 753                         hostdata->control_block.retry_cnt = 1;
 754                         hostdata->control_block.node_name[0] = cpu_to_le16(0x0020);
 755                         hostdata->control_block.node_name[1] = cpu_to_le16(0xE000);
 756                         hostdata->control_block.node_name[2] = cpu_to_le16(0x008B);
 757                         hostdata->control_block.node_name[3] = cpu_to_le16(0x0000);
 758                         hostdata->control_block.hard_addr = cpu_to_le16(0x0003);
 759                         hostdata->control_block.req_queue_len = cpu_to_le16(QLOGICFC_REQ_QUEUE_LEN + 1);
 760                         hostdata->control_block.res_queue_len = cpu_to_le16(RES_QUEUE_LEN + 1);
 761                         hostdata->control_block.res_queue_addr_lo = cpu_to_le32(pci64_dma_lo32(busaddr));
 762                         hostdata->control_block.res_queue_addr_high = cpu_to_le32(pci64_dma_hi32(busaddr));
 763                         hostdata->control_block.req_queue_addr_lo = cpu_to_le32(pci64_dma_lo32(busaddr + RES_SIZE));
 764                         hostdata->control_block.req_queue_addr_high = cpu_to_le32(pci64_dma_hi32(busaddr + RES_SIZE));
 765
 766
 767                         hostdata->control_block.add_firm_opts |= cpu_to_le16(CONNECTION_PREFERENCE<<4);
 768                         hostdata->adapter_state = AS_LOOP_DOWN;
 769                         hostdata->explore_timer.data = 1;
 770                         hostdata->host_id = hosts;
 771
 772                         if (isp2x00_init(host) || isp2x00_reset_hardware(host)) {
 773                                 pci_free_consistent (pdev, RES_SIZE + REQ_SIZE, hostdata->res, busaddr);
 774                                 scsi_unregister(host);
 775                                 continue;
 776                         }
 777                         host->this_id = 0;
 778
 779                         if (request_irq(host->irq, do_isp2x00_intr_handler, SA_INTERRUPT | SA_SHIRQ, "qlogicfc", host)) {
 780                                 printk("qlogicfc%d : interrupt %d already in use\n",
 781                                        hostdata->host_id, host->irq);
 782                                 pci_free_consistent (pdev, RES_SIZE + REQ_SIZE, hostdata->res, busaddr);
 783                                 scsi_unregister(host);
 784                                 continue;
 785                         }
 786                         if (!request_region(host->io_port, 0xff, "qlogicfc")) {
 787                                 printk("qlogicfc%d : i/o region 0x%lx-0x%lx already "
 788                                        "in use\n",
 789                                        hostdata->host_id, host->io_port, host->io_port + 0xff);
 790                                 free_irq(host->irq, host);
 791                                 pci_free_consistent (pdev, RES_SIZE + REQ_SIZE, hostdata->res, busaddr);
 792                                 scsi_unregister(host);
 793                                 continue;
 794                         }
 795
 796                         outw(0x0, host->io_port + PCI_SEMAPHORE);
 797                         outw(HCCR_CLEAR_RISC_INTR, host->io_port + HOST_HCCR);
 798                         isp2x00_enable_irqs(host);
 799                         /* wait for the loop to come up */
 800                         for (wait_time = jiffies + 10 * HZ; time_before(jiffies, wait_time) && hostdata->adapter_state == AS_LOOP_DOWN;) {
 801                                 barrier();
 802                                 cpu_relax();
 803                         }
 804                         if (hostdata->adapter_state == AS_LOOP_DOWN) {
 805                                 printk("qlogicfc%d : link is not up\n", hostdata->host_id);
 806                         }
 807                         hosts++;
 808                         hostdata->explore_timer.data = 0;
 809                 }
 810         }
 811
 812
 813         /* this busy loop should not be needed but the isp2x00 seems to need
 814            some time before recognizing it is attached to a fabric */
 815
 816 #if ISP2x00_FABRIC
 817         for (wait_time = jiffies + 5 * HZ; time_before(jiffies, wait_time);) {
 818                 barrier();
 819                 cpu_relax();
 820         }
 821 #endif
 822
 823         LEAVE("isp2x00_detect");
 824
 825         return hosts;
 826 }
 827
 828
 829 static int isp2x00_make_portdb(struct Scsi_Host *host)
 830 {
 831
 832         short param[8];
 833         int i, j;
 834         struct isp2x00_hostdata *hostdata;
 835
 836         isp2x00_disable_irqs(host);
 837
 838         hostdata = (struct isp2x00_hostdata *) host->hostdata;
 839         memset(hostdata->tempmap, 0, sizeof(hostdata->tempmap));
 840
 841 #if ISP2x00_FABRIC
 842         for (i = 0x81; i < QLOGICFC_MAX_ID; i++) {
 843                 param[0] = MBOX_PORT_LOGOUT;
 844                 param[1] = i << 8;
 845                 param[2] = 0;
 846                 param[3] = 0;
 847
 848                 isp2x00_mbox_command(host, param);
 849
 850                 if (param[0] != MBOX_COMMAND_COMPLETE) {
 851
 852                         DEBUG_FABRIC(printk("qlogicfc%d : logout failed %x  %x\n", hostdata->host_id, i, param[0]));
 853                 }
 854         }
 855 #endif
 856
 857
 858         param[0] = MBOX_GET_INIT_SCSI_ID;
 859
 860         isp2x00_mbox_command(host, param);
 861
 862         if (param[0] == MBOX_COMMAND_COMPLETE) {
 863                 hostdata->port_id = ((u_int) param[3]) << 16;
 864                 hostdata->port_id |= param[2];
 865                 hostdata->tempmap[0].loop_id = param[1];
 866                 hostdata->tempmap[0].wwn = hostdata->wwn;
 867         }
 868         else {
 869                 printk("qlogicfc%d : error getting scsi id.\n", hostdata->host_id);
 870         }
 871
 872         for (i = 0; i <=QLOGICFC_MAX_ID; i++)
 873                 hostdata->tempmap[i].loop_id = hostdata->tempmap[0].loop_id;
 874
 875         for (i = 0, j = 1; i <= QLOGICFC_MAX_LOOP_ID; i++) {
 876                 param[0] = MBOX_GET_PORT_NAME;
 877                 param[1] = (i << 8) & 0xff00;
 878
 879                 isp2x00_mbox_command(host, param);
 880
 881                 if (param[0] == MBOX_COMMAND_COMPLETE) {
 882                         hostdata->tempmap[j].loop_id = i;
 883                         hostdata->tempmap[j].wwn = ((u64) (param[2] & 0xff)) << 56;
 884                         hostdata->tempmap[j].wwn |= ((u64) ((param[2] >> 8) & 0xff)) << 48;
 885                         hostdata->tempmap[j].wwn |= ((u64) (param[3] & 0xff)) << 40;
 886                         hostdata->tempmap[j].wwn |= ((u64) ((param[3] >> 8) & 0xff)) << 32;
 887                         hostdata->tempmap[j].wwn |= ((u64) (param[6] & 0xff)) << 24;
 888                         hostdata->tempmap[j].wwn |= ((u64) ((param[6] >> 8) & 0xff)) << 16;
 889                         hostdata->tempmap[j].wwn |= ((u64) (param[7] & 0xff)) << 8;
 890                         hostdata->tempmap[j].wwn |= ((u64) ((param[7] >> 8) & 0xff));
 891
 892                         j++;
 893
 894                 }
 895         }
 896
 897
 898 #if ISP2x00_FABRIC
 899         isp2x00_init_fabric(host, hostdata->tempmap, j);
 900 #endif
 901
 902         for (i = 0; i <= QLOGICFC_MAX_ID; i++) {
 903                 if (hostdata->tempmap[i].wwn != hostdata->port_db[i].wwn) {
 904                         for (j = 0; j <= QLOGICFC_MAX_ID; j++) {
 905                                 if (hostdata->tempmap[j].wwn == hostdata->port_db[i].wwn) {
 906                                         hostdata->port_db[i].loop_id = hostdata->tempmap[j].loop_id;
 907                                         break;
 908                                 }
 909                         }
 910                         if (j == QLOGICFC_MAX_ID + 1)
 911                                 hostdata->port_db[i].loop_id = hostdata->tempmap[0].loop_id;
 912
 913                         for (j = 0; j <= QLOGICFC_MAX_ID; j++) {
 914                                 if (hostdata->port_db[j].wwn == hostdata->tempmap[i].wwn || !hostdata->port_db[j].wwn) {
 915                                         break;
 916                                 }
 917                         }
 918                         if (j == QLOGICFC_MAX_ID + 1)
 919                                 printk("qlogicfc%d : Too many scsi devices, no more room in port map.\n", hostdata->host_id);
 920                         if (!hostdata->port_db[j].wwn) {
 921                                 hostdata->port_db[j].loop_id = hostdata->tempmap[i].loop_id;
 922                                 hostdata->port_db[j].wwn = hostdata->tempmap[i].wwn;
 923                         }
 924                 } else
 925                         hostdata->port_db[i].loop_id = hostdata->tempmap[i].loop_id;
 926
 927         }
 928
 929         isp2x00_enable_irqs(host);
 930
 931         return 0;
 932 }
 933
 934
 935 #if ISP2x00_FABRIC
 936
 937 #define FABRIC_PORT          0x7e
 938 #define FABRIC_CONTROLLER    0x7f
 939 #define FABRIC_SNS           0x80
 940
 941 int isp2x00_init_fabric(struct Scsi_Host *host, struct id_name_map *port_db, int cur_scsi_id)
 942 {
 943
 944         u_short param[8];
 945         u64 wwn;
 946         int done = 0;
 947         u_short loop_id = 0x81;
 948         u_short scsi_id = cur_scsi_id;
 949         u_int port_id;
 950         struct sns_cb *req;
 951         u_char *sns_response;
 952         dma_addr_t busaddr;
 953         struct isp2x00_hostdata *hostdata;
 954
 955         hostdata = (struct isp2x00_hostdata *) host->hostdata;
 956
 957         DEBUG_FABRIC(printk("qlogicfc%d : Checking for a fabric.\n", hostdata->host_id));
 958         param[0] = MBOX_GET_PORT_NAME;
 959         param[1] = (u16)FABRIC_PORT << 8;
 960
 961         isp2x00_mbox_command(host, param);
 962
 963         if (param[0] != MBOX_COMMAND_COMPLETE) {
 964                 DEBUG_FABRIC(printk("qlogicfc%d : fabric check result %x\n", hostdata->host_id, param[0]));
 965                 return 0;
 966         }
 967         printk("qlogicfc%d : Fabric found.\n", hostdata->host_id);
 968
 969         req = (struct sns_cb *)pci_alloc_consistent(hostdata->pci_dev, sizeof(*req) + 608, &busaddr);
 970
 971         if (!req){
 972                 printk("qlogicfc%d : Could not allocate DMA resources for fabric initialization\n", hostdata->host_id);
 973                 return 0;
 974         }
 975         sns_response = (u_char *)(req + 1);
 976
 977         if (hostdata->adapter_state & AS_REDO_LOOP_PORTDB){
 978                 memset(req, 0, sizeof(*req));
 979
 980                 req->len = cpu_to_le16(8);
 981                 req->response_low = cpu_to_le32(pci64_dma_lo32(busaddr + sizeof(*req)));
 982                 req->response_high = cpu_to_le32(pci64_dma_hi32(busaddr + sizeof(*req)));
 983                 req->sub_len = cpu_to_le16(22);
 984                 req->data[0] = 0x17;
 985                 req->data[1] = 0x02;
 986                 req->data[8] = (u_char) (hostdata->port_id & 0xff);
 987                 req->data[9] = (u_char) (hostdata->port_id >> 8 & 0xff);
 988                 req->data[10] = (u_char) (hostdata->port_id >> 16 & 0xff);
 989                 req->data[13] = 0x01;
 990                 param[0] = MBOX_SEND_SNS;
 991                 param[1] = 30;
 992                 param[2] = pci64_dma_lo32(busaddr) >> 16;
 993                 param[3] = pci64_dma_lo32(busaddr);
 994                 param[6] = pci64_dma_hi32(busaddr) >> 16;
 995                 param[7] = pci64_dma_hi32(busaddr);
 996
 997                 isp2x00_mbox_command(host, param);
 998
 999                 if (param[0] != MBOX_COMMAND_COMPLETE)
1000                         printk("qlogicfc%d : error sending RFC-4\n", hostdata->host_id);
1001         }
1002
1003         port_id = hostdata->port_id;
1004         while (!done) {
1005                 memset(req, 0, sizeof(*req));
1006
1007                 req->len = cpu_to_le16(304);
1008                 req->response_low = cpu_to_le32(pci64_dma_lo32(busaddr + sizeof(*req)));
1009                 req->response_high = cpu_to_le32(pci64_dma_hi32(busaddr + sizeof(*req)));
1010                 req->sub_len = cpu_to_le16(6);
1011                 req->data[0] = 0x00;
1012                 req->data[1] = 0x01;
1013                 req->data[8] = (u_char) (port_id & 0xff);
1014                 req->data[9] = (u_char) (port_id >> 8 & 0xff);
1015                 req->data[10] = (u_char) (port_id >> 16 & 0xff);
1016
1017                 param[0] = MBOX_SEND_SNS;
1018                 param[1] = 14;
1019                 param[2] = pci64_dma_lo32(busaddr) >> 16;
1020                 param[3] = pci64_dma_lo32(busaddr);
1021                 param[6] = pci64_dma_hi32(busaddr) >> 16;
1022                 param[7] = pci64_dma_hi32(busaddr);
1023
1024                 isp2x00_mbox_command(host, param);
1025
1026                 if (param[0] == MBOX_COMMAND_COMPLETE) {
1027                         DEBUG_FABRIC(printk("qlogicfc%d : found node %02x%02x%02x%02x%02x%02x%02x%02x ", hostdata->host_id, sns_response[20], sns_response[21], sns_response[22], sns_response[23], sns_response[24], sns_response[25], sns_response[26], sns_response[27]));
1028                         DEBUG_FABRIC(printk("  port id: %02x%02x%02x\n", sns_response[17], sns_response[18], sns_response[19]));
1029                         port_id = ((u_int) sns_response[17]) << 16;
1030                         port_id |= ((u_int) sns_response[18]) << 8;
1031                         port_id |= ((u_int) sns_response[19]);
1032                         wwn = ((u64) sns_response[20]) << 56;
1033                         wwn |= ((u64) sns_response[21]) << 48;
1034                         wwn |= ((u64) sns_response[22]) << 40;
1035                         wwn |= ((u64) sns_response[23]) << 32;
1036                         wwn |= ((u64) sns_response[24]) << 24;
1037                         wwn |= ((u64) sns_response[25]) << 16;
1038                         wwn |= ((u64) sns_response[26]) << 8;
1039                         wwn |= ((u64) sns_response[27]);
1040                         if (hostdata->port_id >> 8 != port_id >> 8) {
1041                                 DEBUG_FABRIC(printk("qlogicfc%d : adding a fabric port: %x\n", hostdata->host_id, port_id));
1042                                 param[0] = MBOX_PORT_LOGIN;
1043                                 param[1] = loop_id << 8;
1044                                 param[2] = (u_short) (port_id >> 16);
1045                                 param[3] = (u_short) (port_id);
1046
1047                                 isp2x00_mbox_command(host, param);
1048
1049                                 if (param[0] == MBOX_COMMAND_COMPLETE) {
1050                                         port_db[scsi_id].wwn = wwn;
1051                                         port_db[scsi_id].loop_id = loop_id;
1052                                         loop_id++;
1053                                         scsi_id++;
1054                                 } else {
1055                                         printk("qlogicfc%d : Error performing port login %x\n", hostdata->host_id, param[0]);
1056                                         DEBUG_FABRIC(printk("qlogicfc%d : loop_id: %x\n", hostdata->host_id, loop_id));
1057                                         param[0] = MBOX_PORT_LOGOUT;
1058                                         param[1] = loop_id << 8;
1059                                         param[2] = 0;
1060                                         param[3] = 0;
1061
1062                                         isp2x00_mbox_command(host, param);
1063
1064                                 }
1065
1066                         }
1067                         if (hostdata->port_id == port_id)
1068                                 done = 1;
1069                 } else {
1070                         printk("qlogicfc%d : Get All Next failed %x.\n", hostdata->host_id, param[0]);
1071                         pci_free_consistent(hostdata->pci_dev, sizeof(*req) + 608, req, busaddr);
1072                         return 0;
1073                 }
1074         }
1075
1076         pci_free_consistent(hostdata->pci_dev, sizeof(*req) + 608, req, busaddr);
1077         return 1;
1078 }
1079
1080 #endif                          /* ISP2x00_FABRIC */
1081
1082
1083 int isp2x00_release(struct Scsi_Host *host)
1084 {
1085         struct isp2x00_hostdata *hostdata;
1086         dma_addr_t busaddr;
1087
1088         ENTER("isp2x00_release");
1089
1090         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1091
1092         outw(0x0, host->io_port + PCI_INTER_CTL);
1093         free_irq(host->irq, host);
1094
1095         release_region(host->io_port, 0xff);
1096
1097         busaddr = pci64_dma_build(le32_to_cpu(hostdata->control_block.res_queue_addr_high),
1098                                   le32_to_cpu(hostdata->control_block.res_queue_addr_lo));
1099         pci_free_consistent(hostdata->pci_dev, RES_SIZE + REQ_SIZE, hostdata->res, busaddr);
1100
1101         LEAVE("isp2x00_release");
1102
1103         return 0;
1104 }
1105
1106
1107 const char *isp2x00_info(struct Scsi_Host *host)
1108 {
1109         static char buf[80];
1110         struct isp2x00_hostdata *hostdata;
1111         ENTER("isp2x00_info");
1112
1113         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1114         sprintf(buf,
1115                 "QLogic ISP%04x SCSI on PCI bus %02x device %02x irq %d base 0x%lx",
1116                 hostdata->pci_dev->device, hostdata->pci_dev->bus->number, hostdata->pci_dev->devfn, host->irq,
1117                 host->io_port);
1118
1119
1120         LEAVE("isp2x00_info");
1121
1122         return buf;
1123 }
1124
1125
1126 /*
1127  * The middle SCSI layer ensures that queuecommand never gets invoked
1128  * concurrently with itself or the interrupt handler (though the
1129  * interrupt handler may call this routine as part of
1130  * request-completion handling).
1131  */
1132 int isp2x00_queuecommand(Scsi_Cmnd * Cmnd, void (*done) (Scsi_Cmnd *))
1133 {
1134         int i, sg_count, n, num_free;
1135         u_int in_ptr, out_ptr;
1136         struct dataseg *ds;
1137         struct scatterlist *sg;
1138         struct Command_Entry *cmd;
1139         struct Continuation_Entry *cont;
1140         struct Scsi_Host *host;
1141         struct isp2x00_hostdata *hostdata;
1142
1143         ENTER("isp2x00_queuecommand");
1144
1145         host = Cmnd->device->host;
1146         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1147         Cmnd->scsi_done = done;
1148
1149         DEBUG(isp2x00_print_scsi_cmd(Cmnd));
1150
1151         if (hostdata->adapter_state & AS_REDO_FABRIC_PORTDB || hostdata->adapter_state & AS_REDO_LOOP_PORTDB) {
1152                 isp2x00_make_portdb(host);
1153                 hostdata->adapter_state = AS_LOOP_GOOD;
1154                 printk("qlogicfc%d : Port Database\n", hostdata->host_id);
1155                 for (i = 0; hostdata->port_db[i].wwn != 0; i++) {
1156                         printk("wwn: %08x%08x  scsi_id: %x  loop_id: ", (u_int) (hostdata->port_db[i].wwn >> 32), (u_int) hostdata->port_db[i].wwn, i);
1157                         if (hostdata->port_db[i].loop_id != hostdata->port_db[0].loop_id || i == 0)
1158                                 printk("%x", hostdata->port_db[i].loop_id);
1159                         else
1160                                 printk("Not Available");
1161                         printk("\n");
1162                 }
1163         }
1164         if (hostdata->adapter_state == AS_FIRMWARE_DEAD) {
1165                 printk("qlogicfc%d : The firmware is dead, just return.\n", hostdata->host_id);
1166                 host->max_id = 0;
1167                 return 0;
1168         }
1169
1170         out_ptr = inw(host->io_port + MBOX4);
1171         in_ptr = hostdata->req_in_ptr;
1172
1173         DEBUG(printk("qlogicfc%d : request queue depth %d\n", hostdata->host_id,
1174                      REQ_QUEUE_DEPTH(in_ptr, out_ptr)));
1175
1176         cmd = (struct Command_Entry *) &hostdata->req[in_ptr*QUEUE_ENTRY_LEN];
1177         in_ptr = (in_ptr + 1) & QLOGICFC_REQ_QUEUE_LEN;
1178         if (in_ptr == out_ptr) {
1179                 DEBUG(printk("qlogicfc%d : request queue overflow\n", hostdata->host_id));
1180                 return 1;
1181         }
1182         if (hostdata->send_marker) {
1183                 struct Marker_Entry *marker;
1184
1185                 TRACE("queue marker", in_ptr, 0);
1186
1187                 DEBUG(printk("qlogicfc%d : adding marker entry\n", hostdata->host_id));
1188                 marker = (struct Marker_Entry *) cmd;
1189                 memset(marker, 0, sizeof(struct Marker_Entry));
1190
1191                 marker->hdr.entry_type = ENTRY_MARKER;
1192                 marker->hdr.entry_cnt = 1;
1193                 marker->modifier = SYNC_ALL;
1194
1195                 hostdata->send_marker = 0;
1196
1197                 if (((in_ptr + 1) & QLOGICFC_REQ_QUEUE_LEN) == out_ptr) {
1198                         outw(in_ptr, host->io_port + MBOX4);
1199                         hostdata->req_in_ptr = in_ptr;
1200                         DEBUG(printk("qlogicfc%d : request queue overflow\n", hostdata->host_id));
1201                         return 1;
1202                 }
1203                 cmd = (struct Command_Entry *) &hostdata->req[in_ptr*QUEUE_ENTRY_LEN];
1204                 in_ptr = (in_ptr + 1) & QLOGICFC_REQ_QUEUE_LEN;
1205         }
1206         TRACE("queue command", in_ptr, Cmnd);
1207
1208         memset(cmd, 0, sizeof(struct Command_Entry));
1209
1210         /* find a free handle mapping slot */
1211         for (i = in_ptr; i != (in_ptr - 1) && hostdata->handle_ptrs[i]; i = ((i + 1) % (QLOGICFC_REQ_QUEUE_LEN + 1)));
1212
1213         if (!hostdata->handle_ptrs[i]) {
1214                 cmd->handle = cpu_to_le32(i);
1215                 hostdata->handle_ptrs[i] = Cmnd;
1216                 hostdata->handle_serials[i] = Cmnd->serial_number;
1217         } else {
1218                 printk("qlogicfc%d : no handle slots, this should not happen.\n", hostdata->host_id);
1219                 printk("hostdata->queued is %x, in_ptr: %x\n", hostdata->queued, in_ptr);
1220                 for (i = 0; i <= QLOGICFC_REQ_QUEUE_LEN; i++){
1221                         if (!hostdata->handle_ptrs[i]){
1222                                 printk("slot %d has %p\n", i, hostdata->handle_ptrs[i]);
1223                         }
1224                 }
1225                 return 1;
1226         }
1227
1228         cmd->hdr.entry_type = ENTRY_COMMAND;
1229         cmd->hdr.entry_cnt = 1;
1230         cmd->target_lun = Cmnd->device->lun;
1231         cmd->expanded_lun = cpu_to_le16(Cmnd->device->lun);
1232 #if ISP2x00_PORTDB
1233         cmd->target_id = hostdata->port_db[Cmnd->device->id].loop_id;
1234 #else
1235         cmd->target_id = Cmnd->target;
1236 #endif
1237         cmd->total_byte_cnt = cpu_to_le32(Cmnd->request_bufflen);
1238         cmd->time_out = 0;
1239         memcpy(cmd->cdb, Cmnd->cmnd, Cmnd->cmd_len);
1240
1241         if (Cmnd->use_sg) {
1242                 sg = (struct scatterlist *) Cmnd->request_buffer;
1243                 sg_count = pci_map_sg(hostdata->pci_dev, sg, Cmnd->use_sg, scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1244                 cmd->segment_cnt = cpu_to_le16(sg_count);
1245                 ds = cmd->dataseg;
1246                 /* fill in first two sg entries: */
1247                 n = sg_count;
1248                 if (n > DATASEGS_PER_COMMAND)
1249                         n = DATASEGS_PER_COMMAND;
1250
1251                 for (i = 0; i < n; i++) {
1252                         ds[i].d_base = cpu_to_le32(pci64_dma_lo32(sg_dma_address(sg)));
1253                         ds[i].d_base_hi = cpu_to_le32(pci64_dma_hi32(sg_dma_address(sg)));
1254                         ds[i].d_count = cpu_to_le32(sg_dma_len(sg));
1255                         ++sg;
1256                 }
1257                 sg_count -= DATASEGS_PER_COMMAND;
1258
1259                 while (sg_count > 0) {
1260                         ++cmd->hdr.entry_cnt;
1261                         cont = (struct Continuation_Entry *)
1262                             &hostdata->req[in_ptr*QUEUE_ENTRY_LEN];
1263                         memset(cont, 0, sizeof(struct Continuation_Entry));
1264                         in_ptr = (in_ptr + 1) & QLOGICFC_REQ_QUEUE_LEN;
1265                         if (in_ptr == out_ptr) {
1266                                 DEBUG(printk("qlogicfc%d : unexpected request queue overflow\n", hostdata->host_id));
1267                                 return 1;
1268                         }
1269                         TRACE("queue continuation", in_ptr, 0);
1270                         cont->hdr.entry_type = ENTRY_CONTINUATION;
1271                         ds = cont->dataseg;
1272                         n = sg_count;
1273                         if (n > DATASEGS_PER_CONT)
1274                                 n = DATASEGS_PER_CONT;
1275                         for (i = 0; i < n; ++i) {
1276                                 ds[i].d_base = cpu_to_le32(pci64_dma_lo32(sg_dma_address(sg)));
1277                                 ds[i].d_base_hi = cpu_to_le32(pci64_dma_hi32(sg_dma_address(sg)));
1278                                 ds[i].d_count = cpu_to_le32(sg_dma_len(sg));
1279                                 ++sg;
1280                         }
1281                         sg_count -= n;
1282                 }
1283         } else if (Cmnd->request_bufflen && Cmnd->sc_data_direction != PCI_DMA_NONE) {
1284                 struct page *page = virt_to_page(Cmnd->request_buffer);
1285                 unsigned long offset = offset_in_page(Cmnd->request_buffer);
1286                 dma_addr_t busaddr = pci_map_page(hostdata->pci_dev,
1287                                                   page, offset,
1288                                                   Cmnd->request_bufflen,
1289                                                   scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1290                 Cmnd->SCp.dma_handle = busaddr;
1291
1292                 cmd->dataseg[0].d_base = cpu_to_le32(pci64_dma_lo32(busaddr));
1293                 cmd->dataseg[0].d_base_hi = cpu_to_le32(pci64_dma_hi32(busaddr));
1294                 cmd->dataseg[0].d_count = cpu_to_le32(Cmnd->request_bufflen);
1295                 cmd->segment_cnt = cpu_to_le16(1);
1296         } else {
1297                 cmd->dataseg[0].d_base = 0;
1298                 cmd->dataseg[0].d_base_hi = 0;
1299                 cmd->segment_cnt = cpu_to_le16(1); /* Shouldn't this be 0? */
1300         }
1301
1302         if (Cmnd->sc_data_direction == SCSI_DATA_WRITE)
1303                 cmd->control_flags = cpu_to_le16(CFLAG_WRITE);
1304         else
1305                 cmd->control_flags = cpu_to_le16(CFLAG_READ);
1306
1307         if (Cmnd->device->tagged_supported) {
1308                 if ((jiffies - hostdata->tag_ages[Cmnd->device->id]) > (2 * SCSI_TIMEOUT)) {
1309                         cmd->control_flags |= cpu_to_le16(CFLAG_ORDERED_TAG);
1310                         hostdata->tag_ages[Cmnd->device->id] = jiffies;
1311                 } else
1312                         switch (Cmnd->tag) {
1313                         case HEAD_OF_QUEUE_TAG:
1314                                 cmd->control_flags |= cpu_to_le16(CFLAG_HEAD_TAG);
1315                                 break;
1316                         case ORDERED_QUEUE_TAG:
1317                                 cmd->control_flags |= cpu_to_le16(CFLAG_ORDERED_TAG);
1318                                 break;
1319                         default:
1320                                 cmd->control_flags |= cpu_to_le16(CFLAG_SIMPLE_TAG);
1321                                 break;
1322                 }
1323         }
1324         /*
1325          * TEST_UNIT_READY commands from scsi_scan will fail due to "overlapped
1326          * commands attempted" unless we setup at least a simple queue (midlayer
1327          * will embelish this once it can do an INQUIRY command to the device)
1328          */
1329         else
1330                 cmd->control_flags |= cpu_to_le16(CFLAG_SIMPLE_TAG);
1331         outw(in_ptr, host->io_port + MBOX4);
1332         hostdata->req_in_ptr = in_ptr;
1333
1334         hostdata->queued++;
1335
1336         num_free = QLOGICFC_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr);
1337         num_free = (num_free > 2) ? num_free - 2 : 0;
1338        host->can_queue = host->host_busy + num_free;
1339         if (host->can_queue > QLOGICFC_REQ_QUEUE_LEN)
1340                 host->can_queue = QLOGICFC_REQ_QUEUE_LEN;
1341         host->sg_tablesize = QLOGICFC_MAX_SG(num_free);
1342
1343         LEAVE("isp2x00_queuecommand");
1344
1345         return 0;
1346 }
1347
1348
1349 /* we have received an event, such as a lip or an RSCN, which may mean that
1350  * our port database is incorrect so the port database must be recreated.
1351  */
1352 static void redo_port_db(unsigned long arg)
1353 {
1354
1355         struct Scsi_Host * host = (struct Scsi_Host *) arg;
1356         struct isp2x00_hostdata * hostdata;
1357         unsigned long flags;
1358         int i;
1359
1360         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1361         hostdata->explore_timer.data = 0;
1362         del_timer(&hostdata->explore_timer);
1363
1364         spin_lock_irqsave(host->host_lock, flags);
1365
1366         if (hostdata->adapter_state & AS_REDO_FABRIC_PORTDB || hostdata->adapter_state & AS_REDO_LOOP_PORTDB) {
1367                 isp2x00_make_portdb(host);
1368                 printk("qlogicfc%d : Port Database\n", hostdata->host_id);
1369                 for (i = 0; hostdata->port_db[i].wwn != 0; i++) {
1370                         printk("wwn: %08x%08x  scsi_id: %x  loop_id: ", (u_int) (hostdata->port_db[i].wwn >> 32), (u_int) hostdata->port_db[i].wwn, i);
1371                         if (hostdata->port_db[i].loop_id != hostdata->port_db[0].loop_id || i == 0)
1372                                 printk("%x", hostdata->port_db[i].loop_id);
1373                         else
1374                                 printk("Not Available");
1375                         printk("\n");
1376                 }
1377
1378                 for (i = 0; i < QLOGICFC_REQ_QUEUE_LEN; i++){
1379                         if (hostdata->handle_ptrs[i] && (hostdata->port_db[hostdata->handle_ptrs[i]->device->id].loop_id > QLOGICFC_MAX_LOOP_ID || hostdata->adapter_state & AS_REDO_LOOP_PORTDB)){
1380                                 if (hostdata->port_db[hostdata->handle_ptrs[i]->device->id].loop_id != hostdata->port_db[0].loop_id){
1381                                         Scsi_Cmnd *Cmnd = hostdata->handle_ptrs[i];
1382
1383                                          if (Cmnd->use_sg)
1384                                                  pci_unmap_sg(hostdata->pci_dev,
1385                                                               (struct scatterlist *)Cmnd->buffer,
1386                                                               Cmnd->use_sg,
1387                                                               scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1388                                          else if (Cmnd->request_bufflen &&
1389                                                   Cmnd->sc_data_direction != PCI_DMA_NONE) {
1390                                                  pci_unmap_page(hostdata->pci_dev,
1391                                                                 Cmnd->SCp.dma_handle,
1392                                                                 Cmnd->request_bufflen,
1393                                                                 scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1394                                          }
1395
1396                                          hostdata->handle_ptrs[i]->result = DID_SOFT_ERROR << 16;
1397
1398                                          if (hostdata->handle_ptrs[i]->scsi_done){
1399                                            (*hostdata->handle_ptrs[i]->scsi_done) (hostdata->handle_ptrs[i]);
1400                                          }
1401                                          else printk("qlogicfc%d : done is null?\n", hostdata->host_id);
1402                                          hostdata->handle_ptrs[i] = NULL;
1403                                          hostdata->handle_serials[i] = 0;
1404                                 }
1405                         }
1406                 }
1407
1408                 hostdata->adapter_state = AS_LOOP_GOOD;
1409         }
1410
1411         spin_unlock_irqrestore(host->host_lock, flags);
1412
1413 }
1414
1415 #define ASYNC_EVENT_INTERRUPT   0x01
1416
1417 irqreturn_t do_isp2x00_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
1418 {
1419         struct Scsi_Host *host = dev_id;
1420         unsigned long flags;
1421
1422         spin_lock_irqsave(host->host_lock, flags);
1423         isp2x00_intr_handler(irq, dev_id, regs);
1424         spin_unlock_irqrestore(host->host_lock, flags);
1425
1426         return IRQ_HANDLED;
1427 }
1428
1429 void isp2x00_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
1430 {
1431         Scsi_Cmnd *Cmnd;
1432         struct Status_Entry *sts;
1433         struct Scsi_Host *host = dev_id;
1434         struct isp2x00_hostdata *hostdata;
1435         u_int in_ptr, out_ptr, handle, num_free;
1436         u_short status;
1437
1438         ENTER_INTR("isp2x00_intr_handler");
1439
1440         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1441
1442         DEBUG_INTR(printk("qlogicfc%d : interrupt on line %d\n", hostdata->host_id, irq));
1443
1444         if (!(inw(host->io_port + PCI_INTER_STS) & 0x08)) {
1445                 /* spurious interrupts can happen legally */
1446                 DEBUG_INTR(printk("qlogicfc%d : got spurious interrupt\n", hostdata->host_id));
1447                 return;
1448         }
1449         in_ptr = inw(host->io_port + MBOX5);
1450         out_ptr = hostdata->res_out_ptr;
1451
1452         if ((inw(host->io_port + PCI_SEMAPHORE) & ASYNC_EVENT_INTERRUPT)) {
1453                 status = inw(host->io_port + MBOX0);
1454
1455                 DEBUG_INTR(printk("qlogicfc%d : mbox completion status: %x\n",
1456                                   hostdata->host_id, status));
1457
1458                 switch (status) {
1459                 case LOOP_UP:
1460                 case POINT_TO_POINT_UP:
1461                         printk("qlogicfc%d : Link is Up\n", hostdata->host_id);
1462                         hostdata->adapter_state = AS_REDO_FABRIC_PORTDB | AS_REDO_LOOP_PORTDB;
1463                         break;
1464                 case LOOP_DOWN:
1465                         printk("qlogicfc%d : Link is Down\n", hostdata->host_id);
1466                         hostdata->adapter_state = AS_LOOP_DOWN;
1467                         break;
1468                 case CONNECTION_MODE:
1469                         printk("received CONNECTION_MODE irq %x\n", inw(host->io_port + MBOX1));
1470                         break;
1471                 case CHANGE_NOTIFICATION:
1472                         printk("qlogicfc%d : RSCN Received\n", hostdata->host_id);
1473                         if (hostdata->adapter_state == AS_LOOP_GOOD)
1474                                 hostdata->adapter_state = AS_REDO_FABRIC_PORTDB;
1475                         break;
1476                 case LIP_OCCURRED:
1477                 case LIP_RECEIVED:
1478                         printk("qlogicfc%d : Loop Reinitialized\n", hostdata->host_id);
1479                         if (hostdata->adapter_state == AS_LOOP_GOOD)
1480                                 hostdata->adapter_state = AS_REDO_LOOP_PORTDB;
1481                         break;
1482                 case SYSTEM_ERROR:
1483                         printk("qlogicfc%d : The firmware just choked.\n", hostdata->host_id);
1484                         hostdata->adapter_state = AS_FIRMWARE_DEAD;
1485                         break;
1486                 case SCSI_COMMAND_COMPLETE:
1487                         handle = inw(host->io_port + MBOX1) | (inw(host->io_port + MBOX2) << 16);
1488                         Cmnd = hostdata->handle_ptrs[handle];
1489                         hostdata->handle_ptrs[handle] = NULL;
1490                         hostdata->handle_serials[handle] = 0;
1491                         hostdata->queued--;
1492                         if (Cmnd != NULL) {
1493                                 if (Cmnd->use_sg)
1494                                         pci_unmap_sg(hostdata->pci_dev,
1495                                                      (struct scatterlist *)Cmnd->buffer,
1496                                                      Cmnd->use_sg,
1497                                                      scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1498                                 else if (Cmnd->request_bufflen &&
1499                                          Cmnd->sc_data_direction != PCI_DMA_NONE)
1500                                         pci_unmap_page(hostdata->pci_dev,
1501                                                        Cmnd->SCp.dma_handle,
1502                                                        Cmnd->request_bufflen,
1503                                                        scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1504                                 Cmnd->result = 0x0;
1505                                 (*Cmnd->scsi_done) (Cmnd);
1506                         } else
1507                                 printk("qlogicfc%d.c : got a null value out of handle_ptrs, this sucks\n", hostdata->host_id);
1508                         break;
1509                 case MBOX_COMMAND_COMPLETE:
1510                 case INVALID_COMMAND:
1511                 case HOST_INTERFACE_ERROR:
1512                 case TEST_FAILED:
1513                 case COMMAND_ERROR:
1514                 case COMMAND_PARAM_ERROR:
1515                 case PORT_ID_USED:
1516                 case LOOP_ID_USED:
1517                 case ALL_IDS_USED:
1518                         hostdata->mbox_done = 1;
1519                         outw(HCCR_CLEAR_RISC_INTR, host->io_port + HOST_HCCR);
1520                         return;
1521                 default:
1522                         printk("qlogicfc%d : got an unknown status? %x\n", hostdata->host_id, status);
1523                 }
1524                 if ((hostdata->adapter_state & AS_REDO_LOOP_PORTDB || hostdata->adapter_state & AS_REDO_FABRIC_PORTDB) && hostdata->explore_timer.data == 0){
1525                         hostdata->explore_timer.function = redo_port_db;
1526                         hostdata->explore_timer.data = (unsigned long)host;
1527                         hostdata->explore_timer.expires = jiffies + (HZ/4);
1528                         init_timer(&hostdata->explore_timer);
1529                         add_timer(&hostdata->explore_timer);
1530                 }
1531                 outw(0x0, host->io_port + PCI_SEMAPHORE);
1532         } else {
1533                 DEBUG_INTR(printk("qlogicfc%d : response queue update\n", hostdata->host_id));
1534                 DEBUG_INTR(printk("qlogicfc%d : response queue depth %d\n", hostdata->host_id, RES_QUEUE_DEPTH(in_ptr, out_ptr)));
1535
1536                 while (out_ptr != in_ptr) {
1537                         unsigned le_hand;
1538                         sts = (struct Status_Entry *) &hostdata->res[out_ptr*QUEUE_ENTRY_LEN];
1539                         out_ptr = (out_ptr + 1) & RES_QUEUE_LEN;
1540
1541                         TRACE("done", out_ptr, Cmnd);
1542                         DEBUG_INTR(isp2x00_print_status_entry(sts));
1543                         le_hand = le32_to_cpu(sts->handle);
1544                         if (sts->hdr.entry_type == ENTRY_STATUS && (Cmnd = hostdata->handle_ptrs[le_hand])) {
1545                                 Cmnd->result = isp2x00_return_status(Cmnd, sts);
1546                                 hostdata->queued--;
1547
1548                                 if (Cmnd->use_sg)
1549                                         pci_unmap_sg(hostdata->pci_dev,
1550                                                      (struct scatterlist *)Cmnd->buffer, Cmnd->use_sg,
1551                                                      scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1552                                 else if (Cmnd->request_bufflen && Cmnd->sc_data_direction != PCI_DMA_NONE)
1553                                         pci_unmap_page(hostdata->pci_dev,
1554                                                        Cmnd->SCp.dma_handle,
1555                                                        Cmnd->request_bufflen,
1556                                                        scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1557
1558                                 /*
1559                                  * if any of the following are true we do not
1560                                  * call scsi_done.  if the status is CS_ABORTED
1561                                  * we don't have to call done because the upper
1562                                  * level should already know its aborted.
1563                                  */
1564                                 if (hostdata->handle_serials[le_hand] != Cmnd->serial_number
1565                                     || le16_to_cpu(sts->completion_status) == CS_ABORTED){
1566                                         hostdata->handle_serials[le_hand] = 0;
1567                                         hostdata->handle_ptrs[le_hand] = NULL;
1568                                         outw(out_ptr, host->io_port + MBOX5);
1569                                         continue;
1570                                 }
1571                                 /*
1572                                  * if we get back an error indicating the port
1573                                  * is not there or if the link is down and
1574                                  * this is a device that used to be there
1575                                  * allow the command to timeout.
1576                                  * the device may well be back in a couple of
1577                                  * seconds.
1578                                  */
1579                                 if ((hostdata->adapter_state == AS_LOOP_DOWN || sts->completion_status == cpu_to_le16(CS_PORT_UNAVAILABLE) || sts->completion_status == cpu_to_le16(CS_PORT_LOGGED_OUT) || sts->completion_status == cpu_to_le16(CS_PORT_CONFIG_CHANGED)) && hostdata->port_db[Cmnd->device->id].wwn){
1580                                         outw(out_ptr, host->io_port + MBOX5);
1581                                         continue;
1582                                 }
1583                         } else {
1584                                 outw(out_ptr, host->io_port + MBOX5);
1585                                 continue;
1586                         }
1587
1588                         hostdata->handle_ptrs[le_hand] = NULL;
1589
1590                         if (sts->completion_status == cpu_to_le16(CS_RESET_OCCURRED)
1591                             || (sts->status_flags & cpu_to_le16(STF_BUS_RESET)))
1592                                 hostdata->send_marker = 1;
1593
1594                         if (le16_to_cpu(sts->scsi_status) & 0x0200)
1595                                 memcpy(Cmnd->sense_buffer, sts->req_sense_data,
1596                                        sizeof(Cmnd->sense_buffer));
1597
1598                         outw(out_ptr, host->io_port + MBOX5);
1599
1600                         if (Cmnd->scsi_done != NULL) {
1601                                 (*Cmnd->scsi_done) (Cmnd);
1602                         } else
1603                                 printk("qlogicfc%d : Ouch, scsi done is NULL\n", hostdata->host_id);
1604                 }
1605                 hostdata->res_out_ptr = out_ptr;
1606         }
1607
1608
1609         out_ptr = inw(host->io_port + MBOX4);
1610         in_ptr = hostdata->req_in_ptr;
1611
1612         num_free = QLOGICFC_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr);
1613         num_free = (num_free > 2) ? num_free - 2 : 0;
1614        host->can_queue = host->host_busy + num_free;
1615         if (host->can_queue > QLOGICFC_REQ_QUEUE_LEN)
1616                 host->can_queue = QLOGICFC_REQ_QUEUE_LEN;
1617         host->sg_tablesize = QLOGICFC_MAX_SG(num_free);
1618
1619         outw(HCCR_CLEAR_RISC_INTR, host->io_port + HOST_HCCR);
1620         LEAVE_INTR("isp2x00_intr_handler");
1621 }
1622
1623
1624 static int isp2x00_return_status(Scsi_Cmnd *Cmnd, struct Status_Entry *sts)
1625 {
1626         int host_status = DID_ERROR;
1627 #if DEBUG_ISP2x00_INTR
1628         static char *reason[] =
1629         {
1630                 "DID_OK",
1631                 "DID_NO_CONNECT",
1632                 "DID_BUS_BUSY",
1633                 "DID_TIME_OUT",
1634                 "DID_BAD_TARGET",
1635                 "DID_ABORT",
1636                 "DID_PARITY",
1637                 "DID_ERROR",
1638                 "DID_RESET",
1639                 "DID_BAD_INTR"
1640         };
1641 #endif                          /* DEBUG_ISP2x00_INTR */
1642
1643         ENTER("isp2x00_return_status");
1644
1645         DEBUG(printk("qlogicfc : completion status = 0x%04x\n",
1646                      le16_to_cpu(sts->completion_status)));
1647
1648         switch (le16_to_cpu(sts->completion_status)) {
1649         case CS_COMPLETE:
1650                 host_status = DID_OK;
1651                 break;
1652         case CS_DMA_ERROR:
1653                 host_status = DID_ERROR;
1654                 break;
1655         case CS_RESET_OCCURRED:
1656                 host_status = DID_RESET;
1657                 break;
1658         case CS_ABORTED:
1659                 host_status = DID_ABORT;
1660                 break;
1661         case CS_TIMEOUT:
1662                 host_status = DID_TIME_OUT;
1663                 break;
1664         case CS_DATA_OVERRUN:
1665                 host_status = DID_ERROR;
1666                 break;
1667         case CS_DATA_UNDERRUN:
1668                 if (Cmnd->underflow <= (Cmnd->request_bufflen - le32_to_cpu(sts->residual)))
1669                         host_status = DID_OK;
1670                 else
1671                         host_status = DID_ERROR;
1672                 break;
1673         case CS_PORT_UNAVAILABLE:
1674         case CS_PORT_LOGGED_OUT:
1675         case CS_PORT_CONFIG_CHANGED:
1676                 host_status = DID_BAD_TARGET;
1677                 break;
1678         case CS_QUEUE_FULL:
1679                 host_status = DID_ERROR;
1680                 break;
1681         default:
1682                 printk("qlogicfc : unknown completion status 0x%04x\n",
1683                        le16_to_cpu(sts->completion_status));
1684                 host_status = DID_ERROR;
1685                 break;
1686         }
1687
1688         DEBUG_INTR(printk("qlogicfc : host status (%s) scsi status %x\n",
1689                           reason[host_status], le16_to_cpu(sts->scsi_status)));
1690
1691         LEAVE("isp2x00_return_status");
1692
1693         return (le16_to_cpu(sts->scsi_status) & STATUS_MASK) | (host_status << 16);
1694 }
1695
1696
1697 int isp2x00_abort(Scsi_Cmnd * Cmnd)
1698 {
1699         u_short param[8];
1700         int i;
1701         struct Scsi_Host *host;
1702         struct isp2x00_hostdata *hostdata;
1703         int return_status = SUCCESS;
1704
1705         ENTER("isp2x00_abort");
1706
1707         host = Cmnd->device->host;
1708         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1709
1710         for (i = 0; i < QLOGICFC_REQ_QUEUE_LEN; i++)
1711                 if (hostdata->handle_ptrs[i] == Cmnd)
1712                         break;
1713
1714         if (i == QLOGICFC_REQ_QUEUE_LEN){
1715                 return SUCCESS;
1716         }
1717
1718         isp2x00_disable_irqs(host);
1719
1720         param[0] = MBOX_ABORT_IOCB;
1721 #if ISP2x00_PORTDB
1722         param[1] = (((u_short) hostdata->port_db[Cmnd->device->id].loop_id) << 8) | Cmnd->device->lun;
1723 #else
1724         param[1] = (((u_short) Cmnd->target) << 8) | Cmnd->lun;
1725 #endif
1726         param[2] = i & 0xffff;
1727         param[3] = i >> 16;
1728
1729         isp2x00_mbox_command(host, param);
1730
1731         if (param[0] != MBOX_COMMAND_COMPLETE) {
1732                 printk("qlogicfc%d : scsi abort failure: %x\n", hostdata->host_id, param[0]);
1733                 if (param[0] == 0x4005)
1734                         Cmnd->result = DID_ERROR << 16;
1735                 if (param[0] == 0x4006)
1736                         Cmnd->result = DID_BAD_TARGET << 16;
1737                 return_status = FAILED;
1738         }
1739
1740         if (return_status != SUCCESS){
1741                 param[0] = MBOX_GET_FIRMWARE_STATE;
1742                 isp2x00_mbox_command(host, param);
1743                 printk("qlogicfc%d : abort failed\n", hostdata->host_id);
1744                 printk("qlogicfc%d : firmware status is %x %x\n", hostdata->host_id, param[0], param[1]);
1745         }
1746
1747         isp2x00_enable_irqs(host);
1748
1749         LEAVE("isp2x00_abort");
1750
1751         return return_status;
1752 }
1753
1754
1755 int isp2x00_reset(Scsi_Cmnd * Cmnd, unsigned int reset_flags)
1756 {
1757         u_short param[8];
1758         struct Scsi_Host *host;
1759         struct isp2x00_hostdata *hostdata;
1760         int return_status = SCSI_RESET_SUCCESS;
1761
1762         ENTER("isp2x00_reset");
1763
1764         host = Cmnd->device->host;
1765         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1766         param[0] = MBOX_BUS_RESET;
1767         param[1] = 3;
1768
1769         isp2x00_disable_irqs(host);
1770
1771         isp2x00_mbox_command(host, param);
1772
1773         if (param[0] != MBOX_COMMAND_COMPLETE) {
1774                 printk("qlogicfc%d : scsi bus reset failure: %x\n", hostdata->host_id, param[0]);
1775                 return_status = SCSI_RESET_ERROR;
1776         }
1777         isp2x00_enable_irqs(host);
1778
1779         LEAVE("isp2x00_reset");
1780
1781         return return_status;
1782 }
1783
1784
1785 int isp2x00_biosparam(struct scsi_device *sdev, struct block_device *n,
1786                 sector_t capacity, int ip[])
1787 {
1788         int size = capacity;
1789
1790         ENTER("isp2x00_biosparam");
1791
1792         ip[0] = 64;
1793         ip[1] = 32;
1794         ip[2] = size >> 11;
1795         if (ip[2] > 1024) {
1796                 ip[0] = 255;
1797                 ip[1] = 63;
1798                 ip[2] = size / (ip[0] * ip[1]);
1799         }
1800         LEAVE("isp2x00_biosparam");
1801
1802         return 0;
1803 }
1804
1805 static int isp2x00_reset_hardware(struct Scsi_Host *host)
1806 {
1807         u_short param[8];
1808         struct isp2x00_hostdata *hostdata;
1809         int loop_count;
1810         dma_addr_t busaddr;
1811
1812         ENTER("isp2x00_reset_hardware");
1813
1814         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1815
1816         /*
1817          *      This cannot be right - PCI writes are posted
1818          *      (apparently this is hardware design flaw not software ?)
1819          */
1820
1821         outw(0x01, host->io_port + ISP_CTRL_STATUS);
1822         udelay(100);
1823         outw(HCCR_RESET, host->io_port + HOST_HCCR);
1824         udelay(100);
1825         outw(HCCR_RELEASE, host->io_port + HOST_HCCR);
1826         outw(HCCR_BIOS_DISABLE, host->io_port + HOST_HCCR);
1827
1828         loop_count = DEFAULT_LOOP_COUNT;
1829         while (--loop_count && inw(host->io_port + HOST_HCCR) == RISC_BUSY) {
1830                 barrier();
1831                 cpu_relax();
1832         }
1833         if (!loop_count)
1834                 printk("qlogicfc%d : reset_hardware loop timeout\n", hostdata->host_id);
1835
1836
1837
1838 #if DEBUG_ISP2x00
1839         printk("qlogicfc%d : mbox 0 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX0));
1840         printk("qlogicfc%d : mbox 1 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX1));
1841         printk("qlogicfc%d : mbox 2 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX2));
1842         printk("qlogicfc%d : mbox 3 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX3));
1843         printk("qlogicfc%d : mbox 4 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX4));
1844         printk("qlogicfc%d : mbox 5 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX5));
1845         printk("qlogicfc%d : mbox 6 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX6));
1846         printk("qlogicfc%d : mbox 7 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX7));
1847 #endif                          /* DEBUG_ISP2x00 */
1848
1849         DEBUG(printk("qlogicfc%d : verifying checksum\n", hostdata->host_id));
1850
1851 #if defined(CONFIG_SCSI_QLOGIC_FC_FIRMWARE)
1852         {
1853                 int i;
1854                 unsigned short * risc_code = NULL;
1855                 unsigned short risc_code_len = 0;
1856                 if (hostdata->pci_dev->device == PCI_DEVICE_ID_QLOGIC_ISP2100){
1857                         risc_code = risc_code2100;
1858                         risc_code_len = risc_code_length2100;
1859                 }
1860                 else if (hostdata->pci_dev->device == PCI_DEVICE_ID_QLOGIC_ISP2200){
1861                         risc_code = risc_code2200;
1862                         risc_code_len = risc_code_length2200;
1863                 }
1864
1865                 for (i = 0; i < risc_code_len; i++) {
1866                         param[0] = MBOX_WRITE_RAM_WORD;
1867                         param[1] = risc_code_addr01 + i;
1868                         param[2] = risc_code[i];
1869
1870                         isp2x00_mbox_command(host, param);
1871
1872                         if (param[0] != MBOX_COMMAND_COMPLETE) {
1873                                 printk("qlogicfc%d : firmware load failure\n", hostdata->host_id);
1874                                 return 1;
1875                         }
1876                 }
1877         }
1878 #endif                          /* RELOAD_FIRMWARE */
1879
1880         param[0] = MBOX_VERIFY_CHECKSUM;
1881         param[1] = risc_code_addr01;
1882
1883         isp2x00_mbox_command(host, param);
1884
1885         if (param[0] != MBOX_COMMAND_COMPLETE) {
1886                 printk("qlogicfc%d : ram checksum failure\n", hostdata->host_id);
1887                 return 1;
1888         }
1889         DEBUG(printk("qlogicfc%d : executing firmware\n", hostdata->host_id));
1890
1891         param[0] = MBOX_EXEC_FIRMWARE;
1892         param[1] = risc_code_addr01;
1893
1894         isp2x00_mbox_command(host, param);
1895
1896         param[0] = MBOX_ABOUT_FIRMWARE;
1897
1898         isp2x00_mbox_command(host, param);
1899
1900         if (param[0] != MBOX_COMMAND_COMPLETE) {
1901                 printk("qlogicfc%d : about firmware failure\n", hostdata->host_id);
1902                 return 1;
1903         }
1904         DEBUG(printk("qlogicfc%d : firmware major revision %d\n", hostdata->host_id,  param[1]));
1905         DEBUG(printk("qlogicfc%d : firmware minor revision %d\n", hostdata->host_id,  param[2]));
1906
1907 #ifdef USE_NVRAM_DEFAULTS
1908
1909         if (isp2x00_get_nvram_defaults(host, &hostdata->control_block) != 0) {
1910                 printk("qlogicfc%d : Could not read from NVRAM\n", hostdata->host_id);
1911         }
1912 #endif
1913
1914         hostdata->wwn = (u64) (cpu_to_le16(hostdata->control_block.node_name[0])) << 56;
1915         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[0]) & 0xff00) << 48;
1916         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[1]) & 0xff00) << 24;
1917         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[1]) & 0x00ff) << 48;
1918         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[2]) & 0x00ff) << 24;
1919         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[2]) & 0xff00) << 8;
1920         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[3]) & 0x00ff) << 8;
1921         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[3]) & 0xff00) >> 8;
1922
1923         /* FIXME: If the DMA transfer goes one way only, this should use
1924          *        PCI_DMA_TODEVICE and below as well.
1925          */
1926         busaddr = pci_map_page(hostdata->pci_dev,
1927                                virt_to_page(&hostdata->control_block),
1928                                offset_in_page(&hostdata->control_block),
1929                                sizeof(hostdata->control_block),
1930                                PCI_DMA_BIDIRECTIONAL);
1931
1932         param[0] = MBOX_INIT_FIRMWARE;
1933         param[2] = (u_short) (pci64_dma_lo32(busaddr) >> 16);
1934         param[3] = (u_short) (pci64_dma_lo32(busaddr) & 0xffff);
1935         param[4] = 0;
1936         param[5] = 0;
1937         param[6] = (u_short) (pci64_dma_hi32(busaddr) >> 16);
1938         param[7] = (u_short) (pci64_dma_hi32(busaddr) & 0xffff);
1939         isp2x00_mbox_command(host, param);
1940         if (param[0] != MBOX_COMMAND_COMPLETE) {
1941                 printk("qlogicfc%d.c: Ouch 0x%04x\n", hostdata->host_id,  param[0]);
1942                 pci_unmap_page(hostdata->pci_dev, busaddr,
1943                                sizeof(hostdata->control_block),
1944                                PCI_DMA_BIDIRECTIONAL);
1945                 return 1;
1946         }
1947         param[0] = MBOX_GET_FIRMWARE_STATE;
1948         isp2x00_mbox_command(host, param);
1949         if (param[0] != MBOX_COMMAND_COMPLETE) {
1950                 printk("qlogicfc%d.c: 0x%04x\n", hostdata->host_id,  param[0]);
1951                 pci_unmap_page(hostdata->pci_dev, busaddr,
1952                                sizeof(hostdata->control_block),
1953                                PCI_DMA_BIDIRECTIONAL);
1954                 return 1;
1955         }
1956
1957         pci_unmap_page(hostdata->pci_dev, busaddr,
1958                        sizeof(hostdata->control_block),
1959                        PCI_DMA_BIDIRECTIONAL);
1960         LEAVE("isp2x00_reset_hardware");
1961
1962         return 0;
1963 }
1964
1965 #ifdef USE_NVRAM_DEFAULTS
1966
1967 static int isp2x00_get_nvram_defaults(struct Scsi_Host *host, struct init_cb *control_block)
1968 {
1969
1970         u_short value;
1971         if (isp2x00_read_nvram_word(host, 0) != 0x5349)
1972                 return 1;
1973
1974         value = isp2x00_read_nvram_word(host, 8);
1975         control_block->node_name[0] = cpu_to_le16(isp2x00_read_nvram_word(host, 9));
1976         control_block->node_name[1] = cpu_to_le16(isp2x00_read_nvram_word(host, 10));
1977         control_block->node_name[2] = cpu_to_le16(isp2x00_read_nvram_word(host, 11));
1978         control_block->node_name[3] = cpu_to_le16(isp2x00_read_nvram_word(host, 12));
1979         control_block->hard_addr = cpu_to_le16(isp2x00_read_nvram_word(host, 13));
1980
1981         return 0;
1982
1983 }
1984
1985 #endif
1986
1987 static int isp2x00_init(struct Scsi_Host *sh)
1988 {
1989         u_long io_base;
1990         struct isp2x00_hostdata *hostdata;
1991         u_char revision;
1992         u_int irq;
1993         u_short command;
1994         struct pci_dev *pdev;
1995
1996
1997         ENTER("isp2x00_init");
1998
1999         hostdata = (struct isp2x00_hostdata *) sh->hostdata;
2000         pdev = hostdata->pci_dev;
2001
2002         if (pci_read_config_word(pdev, PCI_COMMAND, &command)
2003           || pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision)) {
2004                 printk("qlogicfc%d : error reading PCI configuration\n", hostdata->host_id);
2005                 return 1;
2006         }
2007         io_base = pci_resource_start(pdev, 0);
2008         irq = pdev->irq;
2009
2010
2011         if (pdev->vendor != PCI_VENDOR_ID_QLOGIC) {
2012                 printk("qlogicfc%d : 0x%04x is not QLogic vendor ID\n", hostdata->host_id,
2013                        pdev->vendor);
2014                 return 1;
2015         }
2016         if (pdev->device != PCI_DEVICE_ID_QLOGIC_ISP2100 && pdev->device != PCI_DEVICE_ID_QLOGIC_ISP2200) {
2017                 printk("qlogicfc%d : 0x%04x does not match ISP2100 or ISP2200 device id\n", hostdata->host_id,
2018                        pdev->device);
2019                 return 1;
2020         }
2021         if (!(command & PCI_COMMAND_IO) ||
2022             !(pdev->resource[0].flags & IORESOURCE_IO)) {
2023                 printk("qlogicfc%d : i/o mapping is disabled\n", hostdata->host_id);
2024                 return 1;
2025         }
2026
2027         pci_set_master(pdev);
2028         if (revision != ISP2100_REV_ID1 && revision != ISP2100_REV_ID3 && revision != ISP2200_REV_ID5)
2029                 printk("qlogicfc%d : new isp2x00 revision ID (%d)\n", hostdata->host_id,  revision);
2030
2031
2032         hostdata->revision = revision;
2033
2034         sh->irq = irq;
2035         sh->io_port = io_base;
2036
2037         LEAVE("isp2x00_init");
2038
2039         return 0;
2040 }
2041
2042 #if USE_NVRAM_DEFAULTS
2043
2044 #define NVRAM_DELAY() udelay(10)        /* 10 microsecond delay */
2045
2046
2047 u_short isp2x00_read_nvram_word(struct Scsi_Host * host, u_short byte)
2048 {
2049         int i;
2050         u_short value, output, input;
2051
2052         outw(0x2, host->io_port + PCI_NVRAM);
2053         NVRAM_DELAY();
2054         outw(0x3, host->io_port + PCI_NVRAM);
2055         NVRAM_DELAY();
2056
2057         byte &= 0xff;
2058         byte |= 0x0600;
2059         for (i = 10; i >= 0; i--) {
2060                 output = ((byte >> i) & 0x1) ? 0x4 : 0x0;
2061                 outw(output | 0x2, host->io_port + PCI_NVRAM);
2062                 NVRAM_DELAY();
2063                 outw(output | 0x3, host->io_port + PCI_NVRAM);
2064                 NVRAM_DELAY();
2065                 outw(output | 0x2, host->io_port + PCI_NVRAM);
2066                 NVRAM_DELAY();
2067         }
2068
2069         for (i = 0xf, value = 0; i >= 0; i--) {
2070                 value <<= 1;
2071                 outw(0x3, host->io_port + PCI_NVRAM);
2072                 NVRAM_DELAY();
2073                 input = inw(host->io_port + PCI_NVRAM);
2074                 NVRAM_DELAY();
2075                 outw(0x2, host->io_port + PCI_NVRAM);
2076                 NVRAM_DELAY();
2077                 if (input & 0x8)
2078                         value |= 1;
2079         }
2080
2081         outw(0x0, host->io_port + PCI_NVRAM);
2082         NVRAM_DELAY();
2083
2084         return value;
2085 }
2086
2087
2088 #endif                          /* USE_NVRAM_DEFAULTS */
2089
2090
2091
2092 /*
2093  * currently, this is only called during initialization or abort/reset,
2094  * at which times interrupts are disabled, so polling is OK, I guess...
2095  */
2096 static int isp2x00_mbox_command(struct Scsi_Host *host, u_short param[])
2097 {
2098         int loop_count;
2099         struct isp2x00_hostdata *hostdata = (struct isp2x00_hostdata *) host->hostdata;
2100
2101         if (mbox_param[param[0]] == 0 || hostdata->adapter_state == AS_FIRMWARE_DEAD)
2102                 return 1;
2103
2104         loop_count = DEFAULT_LOOP_COUNT;
2105         while (--loop_count && inw(host->io_port + HOST_HCCR) & 0x0080) {
2106                 barrier();
2107                 cpu_relax();
2108         }
2109         if (!loop_count) {
2110                 printk("qlogicfc%d : mbox_command loop timeout #1\n", hostdata->host_id);
2111                 param[0] = 0x4006;
2112                 hostdata->adapter_state = AS_FIRMWARE_DEAD;
2113                 return 1;
2114         }
2115         hostdata->mbox_done = 0;
2116
2117         if (mbox_param[param[0]] == 0)
2118                 printk("qlogicfc%d : invalid mbox command\n", hostdata->host_id);
2119
2120         if (mbox_param[param[0]] & 0x80)
2121                 outw(param[7], host->io_port + MBOX7);
2122         if (mbox_param[param[0]] & 0x40)
2123                 outw(param[6], host->io_port + MBOX6);
2124         if (mbox_param[param[0]] & 0x20)
2125                 outw(param[5], host->io_port + MBOX5);
2126         if (mbox_param[param[0]] & 0x10)
2127                 outw(param[4], host->io_port + MBOX4);
2128         if (mbox_param[param[0]] & 0x08)
2129                 outw(param[3], host->io_port + MBOX3);
2130         if (mbox_param[param[0]] & 0x04)
2131                 outw(param[2], host->io_port + MBOX2);
2132         if (mbox_param[param[0]] & 0x02)
2133                 outw(param[1], host->io_port + MBOX1);
2134         if (mbox_param[param[0]] & 0x01)
2135                 outw(param[0], host->io_port + MBOX0);
2136
2137
2138         outw(HCCR_SET_HOST_INTR, host->io_port + HOST_HCCR);
2139
2140         while (1) {
2141                 loop_count = DEFAULT_LOOP_COUNT;
2142                 while (--loop_count && !(inw(host->io_port + PCI_INTER_STS) & 0x08)) {
2143                         barrier();
2144                         cpu_relax();
2145                 }
2146
2147                 if (!loop_count) {
2148                         hostdata->adapter_state = AS_FIRMWARE_DEAD;
2149                         printk("qlogicfc%d : mbox_command loop timeout #2\n", hostdata->host_id);
2150                         break;
2151                 }
2152                 isp2x00_intr_handler(host->irq, host, NULL);
2153
2154                 if (hostdata->mbox_done == 1)
2155                         break;
2156
2157         }
2158
2159         loop_count = DEFAULT_LOOP_COUNT;
2160         while (--loop_count && inw(host->io_port + MBOX0) == 0x04) {
2161                 barrier();
2162                 cpu_relax();
2163         }
2164         if (!loop_count)
2165                 printk("qlogicfc%d : mbox_command loop timeout #3\n", hostdata->host_id);
2166
2167         param[7] = inw(host->io_port + MBOX7);
2168         param[6] = inw(host->io_port + MBOX6);
2169         param[5] = inw(host->io_port + MBOX5);
2170         param[4] = inw(host->io_port + MBOX4);
2171         param[3] = inw(host->io_port + MBOX3);
2172         param[2] = inw(host->io_port + MBOX2);
2173         param[1] = inw(host->io_port + MBOX1);
2174         param[0] = inw(host->io_port + MBOX0);
2175
2176
2177         outw(0x0, host->io_port + PCI_SEMAPHORE);
2178
2179         if (inw(host->io_port + HOST_HCCR) & 0x0080) {
2180                 hostdata->adapter_state = AS_FIRMWARE_DEAD;
2181                 printk("qlogicfc%d : mbox op is still pending\n", hostdata->host_id);
2182         }
2183         return 0;
2184 }
2185
2186 #if DEBUG_ISP2x00_INTR
2187
2188 void isp2x00_print_status_entry(struct Status_Entry *status)
2189 {
2190         printk("qlogicfc : entry count = 0x%02x, type = 0x%02x, flags = 0x%02x\n",
2191         status->hdr.entry_cnt, status->hdr.entry_type, status->hdr.flags);
2192         printk("qlogicfc : scsi status = 0x%04x, completion status = 0x%04x\n",
2193                le16_to_cpu(status->scsi_status), le16_to_cpu(status->completion_status));
2194         printk("qlogicfc : state flags = 0x%04x, status flags = 0x%04x\n",
2195                le16_to_cpu(status->state_flags), le16_to_cpu(status->status_flags));
2196         printk("qlogicfc : response info length = 0x%04x, request sense length = 0x%04x\n",
2197                le16_to_cpu(status->res_info_len), le16_to_cpu(status->req_sense_len));
2198         printk("qlogicfc : residual transfer length = 0x%08x, response = 0x%02x\n", le32_to_cpu(status->residual), status->res_info[3]);
2199
2200 }
2201
2202 #endif                         /* DEBUG_ISP2x00_INTR */
2203
2204
2205 #if DEBUG_ISP2x00
2206
2207 void isp2x00_print_scsi_cmd(Scsi_Cmnd * cmd)
2208 {
2209         int i;
2210
2211         printk("qlogicfc : target = 0x%02x, lun = 0x%02x, cmd_len = 0x%02x\n",
2212                cmd->target, cmd->lun, cmd->cmd_len);
2213         printk("qlogicfc : command = ");
2214         for (i = 0; i < cmd->cmd_len; i++)
2215                 printk("0x%02x ", cmd->cmnd[i]);
2216         printk("\n");
2217 }
2218
2219 #endif                          /* DEBUG_ISP2x00 */
2220
2221 MODULE_LICENSE("GPL");
2222
2223 static Scsi_Host_Template driver_template = {
2224         .detect                 = isp2x00_detect,
2225         .release                = isp2x00_release,
2226         .info                   = isp2x00_info,
2227         .queuecommand           = isp2x00_queuecommand,
2228         .eh_abort_handler       = isp2x00_abort,
2229         .bios_param             = isp2x00_biosparam,
2230         .can_queue              = QLOGICFC_REQ_QUEUE_LEN,
2231         .this_id                = -1,
2232         .sg_tablesize           = QLOGICFC_MAX_SG(QLOGICFC_REQ_QUEUE_LEN),
2233         .cmd_per_lun            = QLOGICFC_CMD_PER_LUN,
2234         .use_clustering         = ENABLE_CLUSTERING,
2235 };
2236 #include "scsi_module.c"