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 <scsi/scsi_host.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 #define ISP_TIMEOUT (2*HZ)
 104 /* End Configuration section ************************************************ */
 105
 106 #include <linux/module.h>
 107
 108 #if TRACE_ISP
 109
 110 #define TRACE_BUF_LEN   (32*1024)
 111
 112 struct {
 113         u_long next;
 114         struct {
 115                 u_long time;
 116                 u_int index;
 117                 u_int addr;
 118                 u_char *name;
 119         } buf[TRACE_BUF_LEN];
 120 } trace;
 121
 122 #define TRACE(w, i, a)                                          \
 123 {                                                               \
 124         unsigned long flags;                                    \
 125                                                                 \
 126         save_flags(flags);                                      \
 127         cli();                                                  \
 128         trace.buf[trace.next].name  = (w);                      \
 129         trace.buf[trace.next].time  = jiffies;                  \
 130         trace.buf[trace.next].index = (i);                      \
 131         trace.buf[trace.next].addr  = (long) (a);               \
 132         trace.next = (trace.next + 1) & (TRACE_BUF_LEN - 1);    \
 133         restore_flags(flags);                                   \
 134 }
 135
 136 #else
 137 #define TRACE(w, i, a)
 138 #endif
 139
 140 #if DEBUG_ISP2x00_FABRIC
 141 #define DEBUG_FABRIC(x) x
 142 #else
 143 #define DEBUG_FABRIC(x)
 144 #endif                          /* DEBUG_ISP2x00_FABRIC */
 145
 146
 147 #if DEBUG_ISP2x00
 148 #define ENTER(x)        printk("isp2x00 : entering %s()\n", x);
 149 #define LEAVE(x)        printk("isp2x00 : leaving %s()\n", x);
 150 #define DEBUG(x)        x
 151 #else
 152 #define ENTER(x)
 153 #define LEAVE(x)
 154 #define DEBUG(x)
 155 #endif                          /* DEBUG_ISP2x00 */
 156
 157 #if DEBUG_ISP2x00_INTR
 158 #define ENTER_INTR(x)   printk("isp2x00 : entering %s()\n", x);
 159 #define LEAVE_INTR(x)   printk("isp2x00 : leaving %s()\n", x);
 160 #define DEBUG_INTR(x)   x
 161 #else
 162 #define ENTER_INTR(x)
 163 #define LEAVE_INTR(x)
 164 #define DEBUG_INTR(x)
 165 #endif                          /* DEBUG ISP2x00_INTR */
 166
 167
 168 #define ISP2100_REV_ID1        1
 169 #define ISP2100_REV_ID3        3
 170 #define ISP2200_REV_ID5        5
 171
 172 /* host configuration and control registers */
 173 #define HOST_HCCR       0xc0    /* host command and control */
 174
 175 /* pci bus interface registers */
 176 #define FLASH_BIOS_ADDR 0x00
 177 #define FLASH_BIOS_DATA 0x02
 178 #define ISP_CTRL_STATUS 0x06    /* configuration register #1 */
 179 #define PCI_INTER_CTL   0x08    /* pci interrupt control */
 180 #define PCI_INTER_STS   0x0a    /* pci interrupt status */
 181 #define PCI_SEMAPHORE   0x0c    /* pci semaphore */
 182 #define PCI_NVRAM       0x0e    /* pci nvram interface */
 183
 184 /* mailbox registers */
 185 #define MBOX0           0x10    /* mailbox 0 */
 186 #define MBOX1           0x12    /* mailbox 1 */
 187 #define MBOX2           0x14    /* mailbox 2 */
 188 #define MBOX3           0x16    /* mailbox 3 */
 189 #define MBOX4           0x18    /* mailbox 4 */
 190 #define MBOX5           0x1a    /* mailbox 5 */
 191 #define MBOX6           0x1c    /* mailbox 6 */
 192 #define MBOX7           0x1e    /* mailbox 7 */
 193
 194 /* mailbox command complete status codes */
 195 #define MBOX_COMMAND_COMPLETE           0x4000
 196 #define INVALID_COMMAND                 0x4001
 197 #define HOST_INTERFACE_ERROR            0x4002
 198 #define TEST_FAILED                     0x4003
 199 #define COMMAND_ERROR                   0x4005
 200 #define COMMAND_PARAM_ERROR             0x4006
 201 #define PORT_ID_USED                    0x4007
 202 #define LOOP_ID_USED                    0x4008
 203 #define ALL_IDS_USED                    0x4009
 204
 205 /* async event status codes */
 206 #define RESET_DETECTED                  0x8001
 207 #define SYSTEM_ERROR                    0x8002
 208 #define REQUEST_TRANSFER_ERROR          0x8003
 209 #define RESPONSE_TRANSFER_ERROR         0x8004
 210 #define REQUEST_QUEUE_WAKEUP            0x8005
 211 #define LIP_OCCURRED                     0x8010
 212 #define LOOP_UP                         0x8011
 213 #define LOOP_DOWN                       0x8012
 214 #define LIP_RECEIVED                    0x8013
 215 #define PORT_DB_CHANGED                 0x8014
 216 #define CHANGE_NOTIFICATION             0x8015
 217 #define SCSI_COMMAND_COMPLETE           0x8020
 218 #define POINT_TO_POINT_UP               0x8030
 219 #define CONNECTION_MODE                 0x8036
 220
 221 struct Entry_header {
 222         u_char entry_type;
 223         u_char entry_cnt;
 224         u_char sys_def_1;
 225         u_char flags;
 226 };
 227
 228 /* entry header type commands */
 229 #define ENTRY_COMMAND           0x19
 230 #define ENTRY_CONTINUATION      0x0a
 231
 232 #define ENTRY_STATUS            0x03
 233 #define ENTRY_MARKER            0x04
 234
 235
 236 /* entry header flag definitions */
 237 #define EFLAG_BUSY              2
 238 #define EFLAG_BAD_HEADER        4
 239 #define EFLAG_BAD_PAYLOAD       8
 240
 241 struct dataseg {
 242         u_int d_base;
 243         u_int d_base_hi;
 244         u_int d_count;
 245 };
 246
 247 struct Command_Entry {
 248         struct Entry_header hdr;
 249         u_int handle;
 250         u_char target_lun;
 251         u_char target_id;
 252         u_short expanded_lun;
 253         u_short control_flags;
 254         u_short rsvd2;
 255         u_short time_out;
 256         u_short segment_cnt;
 257         u_char cdb[16];
 258         u_int total_byte_cnt;
 259         struct dataseg dataseg[DATASEGS_PER_COMMAND];
 260 };
 261
 262 /* command entry control flag definitions */
 263 #define CFLAG_NODISC            0x01
 264 #define CFLAG_HEAD_TAG          0x02
 265 #define CFLAG_ORDERED_TAG       0x04
 266 #define CFLAG_SIMPLE_TAG        0x08
 267 #define CFLAG_TAR_RTN           0x10
 268 #define CFLAG_READ              0x20
 269 #define CFLAG_WRITE             0x40
 270
 271 struct Continuation_Entry {
 272         struct Entry_header hdr;
 273         struct dataseg dataseg[DATASEGS_PER_CONT];
 274 };
 275
 276 struct Marker_Entry {
 277         struct Entry_header hdr;
 278         u_int reserved;
 279         u_char target_lun;
 280         u_char target_id;
 281         u_char modifier;
 282         u_char expanded_lun;
 283         u_char rsvds[52];
 284 };
 285
 286 /* marker entry modifier definitions */
 287 #define SYNC_DEVICE     0
 288 #define SYNC_TARGET     1
 289 #define SYNC_ALL        2
 290
 291 struct Status_Entry {
 292         struct Entry_header hdr;
 293         u_int handle;
 294         u_short scsi_status;
 295         u_short completion_status;
 296         u_short state_flags;
 297         u_short status_flags;
 298         u_short res_info_len;
 299         u_short req_sense_len;
 300         u_int residual;
 301         u_char res_info[8];
 302         u_char req_sense_data[32];
 303 };
 304
 305 /* status entry completion status definitions */
 306 #define CS_COMPLETE                     0x0000
 307 #define CS_DMA_ERROR                    0x0002
 308 #define CS_RESET_OCCURRED               0x0004
 309 #define CS_ABORTED                      0x0005
 310 #define CS_TIMEOUT                      0x0006
 311 #define CS_DATA_OVERRUN                 0x0007
 312 #define CS_DATA_UNDERRUN                0x0015
 313 #define CS_QUEUE_FULL                   0x001c
 314 #define CS_PORT_UNAVAILABLE             0x0028
 315 #define CS_PORT_LOGGED_OUT              0x0029
 316 #define CS_PORT_CONFIG_CHANGED          0x002a
 317
 318 /* status entry state flag definitions */
 319 #define SF_SENT_CDB                     0x0400
 320 #define SF_TRANSFERRED_DATA             0x0800
 321 #define SF_GOT_STATUS                   0x1000
 322
 323 /* status entry status flag definitions */
 324 #define STF_BUS_RESET                   0x0008
 325 #define STF_DEVICE_RESET                0x0010
 326 #define STF_ABORTED                     0x0020
 327 #define STF_TIMEOUT                     0x0040
 328
 329 /* interrupt control commands */
 330 #define ISP_EN_INT                      0x8000
 331 #define ISP_EN_RISC                     0x0008
 332
 333 /* host control commands */
 334 #define HCCR_NOP                        0x0000
 335 #define HCCR_RESET                      0x1000
 336 #define HCCR_PAUSE                      0x2000
 337 #define HCCR_RELEASE                    0x3000
 338 #define HCCR_SINGLE_STEP                0x4000
 339 #define HCCR_SET_HOST_INTR              0x5000
 340 #define HCCR_CLEAR_HOST_INTR            0x6000
 341 #define HCCR_CLEAR_RISC_INTR            0x7000
 342 #define HCCR_BP_ENABLE                  0x8000
 343 #define HCCR_BIOS_DISABLE               0x9000
 344 #define HCCR_TEST_MODE                  0xf000
 345
 346 #define RISC_BUSY                       0x0004
 347
 348 /* mailbox commands */
 349 #define MBOX_NO_OP                      0x0000
 350 #define MBOX_LOAD_RAM                   0x0001
 351 #define MBOX_EXEC_FIRMWARE              0x0002
 352 #define MBOX_DUMP_RAM                   0x0003
 353 #define MBOX_WRITE_RAM_WORD             0x0004
 354 #define MBOX_READ_RAM_WORD              0x0005
 355 #define MBOX_MAILBOX_REG_TEST           0x0006
 356 #define MBOX_VERIFY_CHECKSUM            0x0007
 357 #define MBOX_ABOUT_FIRMWARE             0x0008
 358 #define MBOX_LOAD_RISC_RAM              0x0009
 359 #define MBOX_DUMP_RISC_RAM              0x000a
 360 #define MBOX_CHECK_FIRMWARE             0x000e
 361 #define MBOX_INIT_REQ_QUEUE             0x0010
 362 #define MBOX_INIT_RES_QUEUE             0x0011
 363 #define MBOX_EXECUTE_IOCB               0x0012
 364 #define MBOX_WAKE_UP                    0x0013
 365 #define MBOX_STOP_FIRMWARE              0x0014
 366 #define MBOX_ABORT_IOCB                 0x0015
 367 #define MBOX_ABORT_DEVICE               0x0016
 368 #define MBOX_ABORT_TARGET               0x0017
 369 #define MBOX_BUS_RESET                  0x0018
 370 #define MBOX_STOP_QUEUE                 0x0019
 371 #define MBOX_START_QUEUE                0x001a
 372 #define MBOX_SINGLE_STEP_QUEUE          0x001b
 373 #define MBOX_ABORT_QUEUE                0x001c
 374 #define MBOX_GET_DEV_QUEUE_STATUS       0x001d
 375 #define MBOX_GET_FIRMWARE_STATUS        0x001f
 376 #define MBOX_GET_INIT_SCSI_ID           0x0020
 377 #define MBOX_GET_RETRY_COUNT            0x0022
 378 #define MBOX_GET_TARGET_PARAMS          0x0028
 379 #define MBOX_GET_DEV_QUEUE_PARAMS       0x0029
 380 #define MBOX_SET_RETRY_COUNT            0x0032
 381 #define MBOX_SET_TARGET_PARAMS          0x0038
 382 #define MBOX_SET_DEV_QUEUE_PARAMS       0x0039
 383 #define MBOX_EXECUTE_IOCB64             0x0054
 384 #define MBOX_INIT_FIRMWARE              0x0060
 385 #define MBOX_GET_INIT_CB                0x0061
 386 #define MBOX_INIT_LIP                   0x0062
 387 #define MBOX_GET_POS_MAP                0x0063
 388 #define MBOX_GET_PORT_DB                0x0064
 389 #define MBOX_CLEAR_ACA                  0x0065
 390 #define MBOX_TARGET_RESET               0x0066
 391 #define MBOX_CLEAR_TASK_SET             0x0067
 392 #define MBOX_ABORT_TASK_SET             0x0068
 393 #define MBOX_GET_FIRMWARE_STATE         0x0069
 394 #define MBOX_GET_PORT_NAME              0x006a
 395 #define MBOX_SEND_SNS                   0x006e
 396 #define MBOX_PORT_LOGIN                 0x006f
 397 #define MBOX_SEND_CHANGE_REQUEST        0x0070
 398 #define MBOX_PORT_LOGOUT                0x0071
 399
 400 /*
 401  *      Firmware if needed (note this is a hack, it belongs in a separate
 402  *      module.
 403  */
 404
 405 #ifdef CONFIG_SCSI_QLOGIC_FC_FIRMWARE
 406 #include "qlogicfc_asm.c"
 407 #else
 408 static unsigned short risc_code_addr01 = 0x1000 ;
 409 #endif
 410
 411 /* Each element in mbox_param is an 8 bit bitmap where each bit indicates
 412    if that mbox should be copied as input.  For example 0x2 would mean
 413    only copy mbox1. */
 414
 415 static const u_char mbox_param[] =
 416 {
 417         0x01,                   /* MBOX_NO_OP */
 418         0x1f,                   /* MBOX_LOAD_RAM */
 419         0x03,                   /* MBOX_EXEC_FIRMWARE */
 420         0x1f,                   /* MBOX_DUMP_RAM */
 421         0x07,                   /* MBOX_WRITE_RAM_WORD */
 422         0x03,                   /* MBOX_READ_RAM_WORD */
 423         0xff,                   /* MBOX_MAILBOX_REG_TEST */
 424         0x03,                   /* MBOX_VERIFY_CHECKSUM */
 425         0x01,                   /* MBOX_ABOUT_FIRMWARE */
 426         0xff,                   /* MBOX_LOAD_RISC_RAM */
 427         0xff,                   /* MBOX_DUMP_RISC_RAM */
 428         0x00,                   /* 0x000b */
 429         0x00,                   /* 0x000c */
 430         0x00,                   /* 0x000d */
 431         0x01,                   /* MBOX_CHECK_FIRMWARE */
 432         0x00,                   /* 0x000f */
 433         0x1f,                   /* MBOX_INIT_REQ_QUEUE */
 434         0x2f,                   /* MBOX_INIT_RES_QUEUE */
 435         0x0f,                   /* MBOX_EXECUTE_IOCB */
 436         0x03,                   /* MBOX_WAKE_UP */
 437         0x01,                   /* MBOX_STOP_FIRMWARE */
 438         0x0f,                   /* MBOX_ABORT_IOCB */
 439         0x03,                   /* MBOX_ABORT_DEVICE */
 440         0x07,                   /* MBOX_ABORT_TARGET */
 441         0x03,                   /* MBOX_BUS_RESET */
 442         0x03,                   /* MBOX_STOP_QUEUE */
 443         0x03,                   /* MBOX_START_QUEUE */
 444         0x03,                   /* MBOX_SINGLE_STEP_QUEUE */
 445         0x03,                   /* MBOX_ABORT_QUEUE */
 446         0x03,                   /* MBOX_GET_DEV_QUEUE_STATUS */
 447         0x00,                   /* 0x001e */
 448         0x01,                   /* MBOX_GET_FIRMWARE_STATUS */
 449         0x01,                   /* MBOX_GET_INIT_SCSI_ID */
 450         0x00,                   /* 0x0021 */
 451         0x01,                   /* MBOX_GET_RETRY_COUNT */
 452         0x00,                   /* 0x0023 */
 453         0x00,                   /* 0x0024 */
 454         0x00,                   /* 0x0025 */
 455         0x00,                   /* 0x0026 */
 456         0x00,                   /* 0x0027 */
 457         0x03,                   /* MBOX_GET_TARGET_PARAMS */
 458         0x03,                   /* MBOX_GET_DEV_QUEUE_PARAMS */
 459         0x00,                   /* 0x002a */
 460         0x00,                   /* 0x002b */
 461         0x00,                   /* 0x002c */
 462         0x00,                   /* 0x002d */
 463         0x00,                   /* 0x002e */
 464         0x00,                   /* 0x002f */
 465         0x00,                   /* 0x0030 */
 466         0x00,                   /* 0x0031 */
 467         0x07,                   /* MBOX_SET_RETRY_COUNT */
 468         0x00,                   /* 0x0033 */
 469         0x00,                   /* 0x0034 */
 470         0x00,                   /* 0x0035 */
 471         0x00,                   /* 0x0036 */
 472         0x00,                   /* 0x0037 */
 473         0x0f,                   /* MBOX_SET_TARGET_PARAMS */
 474         0x0f,                   /* MBOX_SET_DEV_QUEUE_PARAMS */
 475         0x00,                   /* 0x003a */
 476         0x00,                   /* 0x003b */
 477         0x00,                   /* 0x003c */
 478         0x00,                   /* 0x003d */
 479         0x00,                   /* 0x003e */
 480         0x00,                   /* 0x003f */
 481         0x00,                   /* 0x0040 */
 482         0x00,                   /* 0x0041 */
 483         0x00,                   /* 0x0042 */
 484         0x00,                   /* 0x0043 */
 485         0x00,                   /* 0x0044 */
 486         0x00,                   /* 0x0045 */
 487         0x00,                   /* 0x0046 */
 488         0x00,                   /* 0x0047 */
 489         0x00,                   /* 0x0048 */
 490         0x00,                   /* 0x0049 */
 491         0x00,                   /* 0x004a */
 492         0x00,                   /* 0x004b */
 493         0x00,                   /* 0x004c */
 494         0x00,                   /* 0x004d */
 495         0x00,                   /* 0x004e */
 496         0x00,                   /* 0x004f */
 497         0x00,                   /* 0x0050 */
 498         0x00,                   /* 0x0051 */
 499         0x00,                   /* 0x0052 */
 500         0x00,                   /* 0x0053 */
 501         0xcf,                   /* MBOX_EXECUTE_IOCB64 */
 502         0x00,                   /* 0x0055 */
 503         0x00,                   /* 0x0056 */
 504         0x00,                   /* 0x0057 */
 505         0x00,                   /* 0x0058 */
 506         0x00,                   /* 0x0059 */
 507         0x00,                   /* 0x005a */
 508         0x00,                   /* 0x005b */
 509         0x00,                   /* 0x005c */
 510         0x00,                   /* 0x005d */
 511         0x00,                   /* 0x005e */
 512         0x00,                   /* 0x005f */
 513         0xff,                   /* MBOX_INIT_FIRMWARE */
 514         0xcd,                   /* MBOX_GET_INIT_CB */
 515         0x01,                   /* MBOX_INIT_LIP */
 516         0xcd,                   /* MBOX_GET_POS_MAP */
 517         0xcf,                   /* MBOX_GET_PORT_DB */
 518         0x03,                   /* MBOX_CLEAR_ACA */
 519         0x03,                   /* MBOX_TARGET_RESET */
 520         0x03,                   /* MBOX_CLEAR_TASK_SET */
 521         0x03,                   /* MBOX_ABORT_TASK_SET */
 522         0x01,                   /* MBOX_GET_FIRMWARE_STATE */
 523         0x03,                   /* MBOX_GET_PORT_NAME */
 524         0x00,                   /* 0x006b */
 525         0x00,                   /* 0x006c */
 526         0x00,                   /* 0x006d */
 527         0xcf,                   /* MBOX_SEND_SNS */
 528         0x0f,                   /* MBOX_PORT_LOGIN */
 529         0x03,                   /* MBOX_SEND_CHANGE_REQUEST */
 530         0x03,                   /* MBOX_PORT_LOGOUT */
 531 };
 532
 533 #define MAX_MBOX_COMMAND        (sizeof(mbox_param)/sizeof(u_short))
 534
 535
 536 struct id_name_map {
 537         u64 wwn;
 538         u_char loop_id;
 539 };
 540
 541 struct sns_cb {
 542         u_short len;
 543         u_short res1;
 544         u_int response_low;
 545         u_int response_high;
 546         u_short sub_len;
 547         u_short res2;
 548         u_char data[44];
 549 };
 550
 551 /* address of instance of this struct is passed to adapter to initialize things
 552  */
 553 struct init_cb {
 554         u_char version;
 555         u_char reseverd1[1];
 556         u_short firm_opts;
 557         u_short max_frame_len;
 558         u_short max_iocb;
 559         u_short exec_throttle;
 560         u_char retry_cnt;
 561         u_char retry_delay;
 562         u_short node_name[4];
 563         u_short hard_addr;
 564         u_char reserved2[10];
 565         u_short req_queue_out;
 566         u_short res_queue_in;
 567         u_short req_queue_len;
 568         u_short res_queue_len;
 569         u_int req_queue_addr_lo;
 570         u_int req_queue_addr_high;
 571         u_int res_queue_addr_lo;
 572         u_int res_queue_addr_high;
 573         /* the rest of this structure only applies to the isp2200 */
 574         u_short lun_enables;
 575         u_char cmd_resource_cnt;
 576         u_char notify_resource_cnt;
 577         u_short timeout;
 578         u_short reserved3;
 579         u_short add_firm_opts;
 580         u_char res_accum_timer;
 581         u_char irq_delay_timer;
 582         u_short special_options;
 583         u_short reserved4[13];
 584 };
 585
 586 /*
 587  * The result queue can be quite a bit smaller since continuation entries
 588  * do not show up there:
 589  */
 590 #define RES_QUEUE_LEN           ((QLOGICFC_REQ_QUEUE_LEN + 1) / 8 - 1)
 591 #define QUEUE_ENTRY_LEN         64
 592
 593 #if ISP2x00_FABRIC
 594 #define QLOGICFC_MAX_ID    0xff
 595 #else
 596 #define QLOGICFC_MAX_ID    0x7d
 597 #endif
 598
 599 #define QLOGICFC_MAX_LUN        128
 600 #define QLOGICFC_MAX_LOOP_ID    0x7d
 601
 602 /* the following connection options only apply to the 2200.  i have only
 603  * had success with LOOP_ONLY and P2P_ONLY.
 604  */
 605
 606 #define LOOP_ONLY              0
 607 #define P2P_ONLY               1
 608 #define LOOP_PREFERED          2
 609 #define P2P_PREFERED           3
 610
 611 #define CONNECTION_PREFERENCE  LOOP_ONLY
 612
 613 /* adapter_state values */
 614 #define AS_FIRMWARE_DEAD      -1
 615 #define AS_LOOP_DOWN           0
 616 #define AS_LOOP_GOOD           1
 617 #define AS_REDO_FABRIC_PORTDB  2
 618 #define AS_REDO_LOOP_PORTDB    4
 619
 620 #define RES_SIZE        ((RES_QUEUE_LEN + 1)*QUEUE_ENTRY_LEN)
 621 #define REQ_SIZE        ((QLOGICFC_REQ_QUEUE_LEN + 1)*QUEUE_ENTRY_LEN)
 622
 623 struct isp2x00_hostdata {
 624         u_char revision;
 625         struct pci_dev *pci_dev;
 626         /* result and request queues (shared with isp2x00): */
 627         u_int req_in_ptr;       /* index of next request slot */
 628         u_int res_out_ptr;      /* index of next result slot */
 629
 630         /* this is here so the queues are nicely aligned */
 631         long send_marker;       /* do we need to send a marker? */
 632
 633         char * res;
 634         char * req;
 635         struct init_cb control_block;
 636         int adapter_state;
 637         unsigned long int tag_ages[QLOGICFC_MAX_ID + 1];
 638         Scsi_Cmnd *handle_ptrs[QLOGICFC_REQ_QUEUE_LEN + 1];
 639         unsigned long handle_serials[QLOGICFC_REQ_QUEUE_LEN + 1];
 640         struct id_name_map port_db[QLOGICFC_MAX_ID + 1];
 641         u_char mbox_done;
 642         u64 wwn;
 643         u_int port_id;
 644         u_char queued;
 645         u_char host_id;
 646         struct timer_list explore_timer;
 647         struct id_name_map tempmap[QLOGICFC_MAX_ID + 1];
 648 };
 649
 650
 651 /* queue length's _must_ be power of two: */
 652 #define QUEUE_DEPTH(in, out, ql)        ((in - out) & (ql))
 653 #define REQ_QUEUE_DEPTH(in, out)        QUEUE_DEPTH(in, out,                 \
 654                                                     QLOGICFC_REQ_QUEUE_LEN)
 655 #define RES_QUEUE_DEPTH(in, out)        QUEUE_DEPTH(in, out, RES_QUEUE_LEN)
 656
 657 static void isp2x00_enable_irqs(struct Scsi_Host *);
 658 static void isp2x00_disable_irqs(struct Scsi_Host *);
 659 static int isp2x00_init(struct Scsi_Host *);
 660 static int isp2x00_reset_hardware(struct Scsi_Host *);
 661 static int isp2x00_mbox_command(struct Scsi_Host *, u_short[]);
 662 static int isp2x00_return_status(Scsi_Cmnd *, struct Status_Entry *);
 663 static void isp2x00_intr_handler(int, void *, struct pt_regs *);
 664 static irqreturn_t do_isp2x00_intr_handler(int, void *, struct pt_regs *);
 665 static int isp2x00_make_portdb(struct Scsi_Host *);
 666
 667 #if ISP2x00_FABRIC
 668 static int isp2x00_init_fabric(struct Scsi_Host *, struct id_name_map *, int);
 669 #endif
 670
 671 #if USE_NVRAM_DEFAULTS
 672 static int isp2x00_get_nvram_defaults(struct Scsi_Host *, struct init_cb *);
 673 static u_short isp2x00_read_nvram_word(struct Scsi_Host *, u_short);
 674 #endif
 675
 676 #if DEBUG_ISP2x00
 677 static void isp2x00_print_scsi_cmd(Scsi_Cmnd *);
 678 #endif
 679
 680 #if DEBUG_ISP2x00_INTR
 681 static void isp2x00_print_status_entry(struct Status_Entry *);
 682 #endif
 683
 684 static inline void isp2x00_enable_irqs(struct Scsi_Host *host)
 685 {
 686         outw(ISP_EN_INT | ISP_EN_RISC, host->io_port + PCI_INTER_CTL);
 687 }
 688
 689
 690 static inline void isp2x00_disable_irqs(struct Scsi_Host *host)
 691 {
 692         outw(0x0, host->io_port + PCI_INTER_CTL);
 693 }
 694
 695
 696 int isp2x00_detect(Scsi_Host_Template * tmpt)
 697 {
 698         int hosts = 0;
 699         unsigned long wait_time;
 700         struct Scsi_Host *host = NULL;
 701         struct isp2x00_hostdata *hostdata;
 702         struct pci_dev *pdev;
 703         unsigned short device_ids[2];
 704         dma_addr_t busaddr;
 705         int i;
 706
 707
 708         ENTER("isp2x00_detect");
 709
 710         device_ids[0] = PCI_DEVICE_ID_QLOGIC_ISP2100;
 711         device_ids[1] = PCI_DEVICE_ID_QLOGIC_ISP2200;
 712
 713         tmpt->proc_name = "isp2x00";
 714
 715         for (i=0; i<2; i++){
 716                 pdev = NULL;
 717                 while ((pdev = pci_find_device(PCI_VENDOR_ID_QLOGIC, device_ids[i], pdev))) {
 718                         if (pci_enable_device(pdev))
 719                                 continue;
 720
 721                         /* Try to configure DMA attributes. */
 722                         if (pci_set_dma_mask(pdev, 0xffffffffffffffffULL) &&
 723                             pci_set_dma_mask(pdev, 0xffffffffULL))
 724                                         continue;
 725
 726                         host = scsi_register(tmpt, sizeof(struct isp2x00_hostdata));
 727                         if (!host) {
 728                                 printk("qlogicfc%d : could not register host.\n", hosts);
 729                                 continue;
 730                         }
 731                         scsi_set_device(host, &pdev->dev);
 732                         host->max_id = QLOGICFC_MAX_ID + 1;
 733                         host->max_lun = QLOGICFC_MAX_LUN;
 734                         hostdata = (struct isp2x00_hostdata *) host->hostdata;
 735
 736                         memset(hostdata, 0, sizeof(struct isp2x00_hostdata));
 737                         hostdata->pci_dev = pdev;
 738                         hostdata->res = pci_alloc_consistent(pdev, RES_SIZE + REQ_SIZE, &busaddr);
 739
 740                         if (!hostdata->res){
 741                                 printk("qlogicfc%d : could not allocate memory for request and response queue.\n", hosts);
 742                                 scsi_unregister(host);
 743                                 continue;
 744                         }
 745                         hostdata->req = hostdata->res + (RES_QUEUE_LEN + 1)*QUEUE_ENTRY_LEN;
 746                         hostdata->queued = 0;
 747                         /* set up the control block */
 748                         hostdata->control_block.version = 0x1;
 749                         hostdata->control_block.firm_opts = cpu_to_le16(0x800e);
 750                         hostdata->control_block.max_frame_len = cpu_to_le16(2048);
 751                         hostdata->control_block.max_iocb = cpu_to_le16(QLOGICFC_REQ_QUEUE_LEN);
 752                         hostdata->control_block.exec_throttle = cpu_to_le16(QLOGICFC_CMD_PER_LUN);
 753                         hostdata->control_block.retry_delay = 5;
 754                         hostdata->control_block.retry_cnt = 1;
 755                         hostdata->control_block.node_name[0] = cpu_to_le16(0x0020);
 756                         hostdata->control_block.node_name[1] = cpu_to_le16(0xE000);
 757                         hostdata->control_block.node_name[2] = cpu_to_le16(0x008B);
 758                         hostdata->control_block.node_name[3] = cpu_to_le16(0x0000);
 759                         hostdata->control_block.hard_addr = cpu_to_le16(0x0003);
 760                         hostdata->control_block.req_queue_len = cpu_to_le16(QLOGICFC_REQ_QUEUE_LEN + 1);
 761                         hostdata->control_block.res_queue_len = cpu_to_le16(RES_QUEUE_LEN + 1);
 762                         hostdata->control_block.res_queue_addr_lo = cpu_to_le32(pci64_dma_lo32(busaddr));
 763                         hostdata->control_block.res_queue_addr_high = cpu_to_le32(pci64_dma_hi32(busaddr));
 764                         hostdata->control_block.req_queue_addr_lo = cpu_to_le32(pci64_dma_lo32(busaddr + RES_SIZE));
 765                         hostdata->control_block.req_queue_addr_high = cpu_to_le32(pci64_dma_hi32(busaddr + RES_SIZE));
 766
 767
 768                         hostdata->control_block.add_firm_opts |= cpu_to_le16(CONNECTION_PREFERENCE<<4);
 769                         hostdata->adapter_state = AS_LOOP_DOWN;
 770                         hostdata->explore_timer.data = 1;
 771                         hostdata->host_id = hosts;
 772
 773                         if (isp2x00_init(host) || isp2x00_reset_hardware(host)) {
 774                                 pci_free_consistent (pdev, RES_SIZE + REQ_SIZE, hostdata->res, busaddr);
 775                                 scsi_unregister(host);
 776                                 continue;
 777                         }
 778                         host->this_id = 0;
 779
 780                         if (request_irq(host->irq, do_isp2x00_intr_handler, SA_INTERRUPT | SA_SHIRQ, "qlogicfc", host)) {
 781                                 printk("qlogicfc%d : interrupt %d already in use\n",
 782                                        hostdata->host_id, host->irq);
 783                                 pci_free_consistent (pdev, RES_SIZE + REQ_SIZE, hostdata->res, busaddr);
 784                                 scsi_unregister(host);
 785                                 continue;
 786                         }
 787                         if (!request_region(host->io_port, 0xff, "qlogicfc")) {
 788                                 printk("qlogicfc%d : i/o region 0x%lx-0x%lx already "
 789                                        "in use\n",
 790                                        hostdata->host_id, host->io_port, host->io_port + 0xff);
 791                                 free_irq(host->irq, host);
 792                                 pci_free_consistent (pdev, RES_SIZE + REQ_SIZE, hostdata->res, busaddr);
 793                                 scsi_unregister(host);
 794                                 continue;
 795                         }
 796
 797                         outw(0x0, host->io_port + PCI_SEMAPHORE);
 798                         outw(HCCR_CLEAR_RISC_INTR, host->io_port + HOST_HCCR);
 799                         isp2x00_enable_irqs(host);
 800                         /* wait for the loop to come up */
 801                         for (wait_time = jiffies + 10 * HZ; time_before(jiffies, wait_time) && hostdata->adapter_state == AS_LOOP_DOWN;) {
 802                                 barrier();
 803                                 cpu_relax();
 804                         }
 805                         if (hostdata->adapter_state == AS_LOOP_DOWN) {
 806                                 printk("qlogicfc%d : link is not up\n", hostdata->host_id);
 807                         }
 808                         hosts++;
 809                         hostdata->explore_timer.data = 0;
 810                 }
 811         }
 812
 813
 814         /* this busy loop should not be needed but the isp2x00 seems to need
 815            some time before recognizing it is attached to a fabric */
 816
 817 #if ISP2x00_FABRIC
 818         if (hosts) {
 819                 for (wait_time = jiffies + 5 * HZ; time_before(jiffies, wait_time);) {
 820                         barrier();
 821                         cpu_relax();
 822                 }
 823         }
 824 #endif
 825
 826         LEAVE("isp2x00_detect");
 827
 828         return hosts;
 829 }
 830
 831
 832 static int isp2x00_make_portdb(struct Scsi_Host *host)
 833 {
 834
 835         short param[8];
 836         int i, j;
 837         struct isp2x00_hostdata *hostdata;
 838
 839         isp2x00_disable_irqs(host);
 840
 841         hostdata = (struct isp2x00_hostdata *) host->hostdata;
 842         memset(hostdata->tempmap, 0, sizeof(hostdata->tempmap));
 843
 844 #if ISP2x00_FABRIC
 845         for (i = 0x81; i < QLOGICFC_MAX_ID; i++) {
 846                 param[0] = MBOX_PORT_LOGOUT;
 847                 param[1] = i << 8;
 848                 param[2] = 0;
 849                 param[3] = 0;
 850
 851                 isp2x00_mbox_command(host, param);
 852
 853                 if (param[0] != MBOX_COMMAND_COMPLETE) {
 854
 855                         DEBUG_FABRIC(printk("qlogicfc%d : logout failed %x  %x\n", hostdata->host_id, i, param[0]));
 856                 }
 857         }
 858 #endif
 859
 860
 861         param[0] = MBOX_GET_INIT_SCSI_ID;
 862
 863         isp2x00_mbox_command(host, param);
 864
 865         if (param[0] == MBOX_COMMAND_COMPLETE) {
 866                 hostdata->port_id = ((u_int) param[3]) << 16;
 867                 hostdata->port_id |= param[2];
 868                 hostdata->tempmap[0].loop_id = param[1];
 869                 hostdata->tempmap[0].wwn = hostdata->wwn;
 870         }
 871         else {
 872                 printk("qlogicfc%d : error getting scsi id.\n", hostdata->host_id);
 873         }
 874
 875         for (i = 0; i <=QLOGICFC_MAX_ID; i++)
 876                 hostdata->tempmap[i].loop_id = hostdata->tempmap[0].loop_id;
 877
 878         for (i = 0, j = 1; i <= QLOGICFC_MAX_LOOP_ID; i++) {
 879                 param[0] = MBOX_GET_PORT_NAME;
 880                 param[1] = (i << 8) & 0xff00;
 881
 882                 isp2x00_mbox_command(host, param);
 883
 884                 if (param[0] == MBOX_COMMAND_COMPLETE) {
 885                         hostdata->tempmap[j].loop_id = i;
 886                         hostdata->tempmap[j].wwn = ((u64) (param[2] & 0xff)) << 56;
 887                         hostdata->tempmap[j].wwn |= ((u64) ((param[2] >> 8) & 0xff)) << 48;
 888                         hostdata->tempmap[j].wwn |= ((u64) (param[3] & 0xff)) << 40;
 889                         hostdata->tempmap[j].wwn |= ((u64) ((param[3] >> 8) & 0xff)) << 32;
 890                         hostdata->tempmap[j].wwn |= ((u64) (param[6] & 0xff)) << 24;
 891                         hostdata->tempmap[j].wwn |= ((u64) ((param[6] >> 8) & 0xff)) << 16;
 892                         hostdata->tempmap[j].wwn |= ((u64) (param[7] & 0xff)) << 8;
 893                         hostdata->tempmap[j].wwn |= ((u64) ((param[7] >> 8) & 0xff));
 894
 895                         j++;
 896
 897                 }
 898         }
 899
 900
 901 #if ISP2x00_FABRIC
 902         isp2x00_init_fabric(host, hostdata->tempmap, j);
 903 #endif
 904
 905         for (i = 0; i <= QLOGICFC_MAX_ID; i++) {
 906                 if (hostdata->tempmap[i].wwn != hostdata->port_db[i].wwn) {
 907                         for (j = 0; j <= QLOGICFC_MAX_ID; j++) {
 908                                 if (hostdata->tempmap[j].wwn == hostdata->port_db[i].wwn) {
 909                                         hostdata->port_db[i].loop_id = hostdata->tempmap[j].loop_id;
 910                                         break;
 911                                 }
 912                         }
 913                         if (j == QLOGICFC_MAX_ID + 1)
 914                                 hostdata->port_db[i].loop_id = hostdata->tempmap[0].loop_id;
 915
 916                         for (j = 0; j <= QLOGICFC_MAX_ID; j++) {
 917                                 if (hostdata->port_db[j].wwn == hostdata->tempmap[i].wwn || !hostdata->port_db[j].wwn) {
 918                                         break;
 919                                 }
 920                         }
 921                         if (j == QLOGICFC_MAX_ID + 1)
 922                                 printk("qlogicfc%d : Too many scsi devices, no more room in port map.\n", hostdata->host_id);
 923                         if (!hostdata->port_db[j].wwn) {
 924                                 hostdata->port_db[j].loop_id = hostdata->tempmap[i].loop_id;
 925                                 hostdata->port_db[j].wwn = hostdata->tempmap[i].wwn;
 926                         }
 927                 } else
 928                         hostdata->port_db[i].loop_id = hostdata->tempmap[i].loop_id;
 929
 930         }
 931
 932         isp2x00_enable_irqs(host);
 933
 934         return 0;
 935 }
 936
 937
 938 #if ISP2x00_FABRIC
 939
 940 #define FABRIC_PORT          0x7e
 941 #define FABRIC_CONTROLLER    0x7f
 942 #define FABRIC_SNS           0x80
 943
 944 int isp2x00_init_fabric(struct Scsi_Host *host, struct id_name_map *port_db, int cur_scsi_id)
 945 {
 946
 947         u_short param[8];
 948         u64 wwn;
 949         int done = 0;
 950         u_short loop_id = 0x81;
 951         u_short scsi_id = cur_scsi_id;
 952         u_int port_id;
 953         struct sns_cb *req;
 954         u_char *sns_response;
 955         dma_addr_t busaddr;
 956         struct isp2x00_hostdata *hostdata;
 957
 958         hostdata = (struct isp2x00_hostdata *) host->hostdata;
 959
 960         DEBUG_FABRIC(printk("qlogicfc%d : Checking for a fabric.\n", hostdata->host_id));
 961         param[0] = MBOX_GET_PORT_NAME;
 962         param[1] = (u16)FABRIC_PORT << 8;
 963
 964         isp2x00_mbox_command(host, param);
 965
 966         if (param[0] != MBOX_COMMAND_COMPLETE) {
 967                 DEBUG_FABRIC(printk("qlogicfc%d : fabric check result %x\n", hostdata->host_id, param[0]));
 968                 return 0;
 969         }
 970         printk("qlogicfc%d : Fabric found.\n", hostdata->host_id);
 971
 972         req = (struct sns_cb *)pci_alloc_consistent(hostdata->pci_dev, sizeof(*req) + 608, &busaddr);
 973
 974         if (!req){
 975                 printk("qlogicfc%d : Could not allocate DMA resources for fabric initialization\n", hostdata->host_id);
 976                 return 0;
 977         }
 978         sns_response = (u_char *)(req + 1);
 979
 980         if (hostdata->adapter_state & AS_REDO_LOOP_PORTDB){
 981                 memset(req, 0, sizeof(*req));
 982
 983                 req->len = cpu_to_le16(8);
 984                 req->response_low = cpu_to_le32(pci64_dma_lo32(busaddr + sizeof(*req)));
 985                 req->response_high = cpu_to_le32(pci64_dma_hi32(busaddr + sizeof(*req)));
 986                 req->sub_len = cpu_to_le16(22);
 987                 req->data[0] = 0x17;
 988                 req->data[1] = 0x02;
 989                 req->data[8] = (u_char) (hostdata->port_id & 0xff);
 990                 req->data[9] = (u_char) (hostdata->port_id >> 8 & 0xff);
 991                 req->data[10] = (u_char) (hostdata->port_id >> 16 & 0xff);
 992                 req->data[13] = 0x01;
 993                 param[0] = MBOX_SEND_SNS;
 994                 param[1] = 30;
 995                 param[2] = pci64_dma_lo32(busaddr) >> 16;
 996                 param[3] = pci64_dma_lo32(busaddr);
 997                 param[6] = pci64_dma_hi32(busaddr) >> 16;
 998                 param[7] = pci64_dma_hi32(busaddr);
 999
1000                 isp2x00_mbox_command(host, param);
1001
1002                 if (param[0] != MBOX_COMMAND_COMPLETE)
1003                         printk("qlogicfc%d : error sending RFC-4\n", hostdata->host_id);
1004         }
1005
1006         port_id = hostdata->port_id;
1007         while (!done) {
1008                 memset(req, 0, sizeof(*req));
1009
1010                 req->len = cpu_to_le16(304);
1011                 req->response_low = cpu_to_le32(pci64_dma_lo32(busaddr + sizeof(*req)));
1012                 req->response_high = cpu_to_le32(pci64_dma_hi32(busaddr + sizeof(*req)));
1013                 req->sub_len = cpu_to_le16(6);
1014                 req->data[0] = 0x00;
1015                 req->data[1] = 0x01;
1016                 req->data[8] = (u_char) (port_id & 0xff);
1017                 req->data[9] = (u_char) (port_id >> 8 & 0xff);
1018                 req->data[10] = (u_char) (port_id >> 16 & 0xff);
1019
1020                 param[0] = MBOX_SEND_SNS;
1021                 param[1] = 14;
1022                 param[2] = pci64_dma_lo32(busaddr) >> 16;
1023                 param[3] = pci64_dma_lo32(busaddr);
1024                 param[6] = pci64_dma_hi32(busaddr) >> 16;
1025                 param[7] = pci64_dma_hi32(busaddr);
1026
1027                 isp2x00_mbox_command(host, param);
1028
1029                 if (param[0] == MBOX_COMMAND_COMPLETE) {
1030                         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]));
1031                         DEBUG_FABRIC(printk("  port id: %02x%02x%02x\n", sns_response[17], sns_response[18], sns_response[19]));
1032                         port_id = ((u_int) sns_response[17]) << 16;
1033                         port_id |= ((u_int) sns_response[18]) << 8;
1034                         port_id |= ((u_int) sns_response[19]);
1035                         wwn = ((u64) sns_response[20]) << 56;
1036                         wwn |= ((u64) sns_response[21]) << 48;
1037                         wwn |= ((u64) sns_response[22]) << 40;
1038                         wwn |= ((u64) sns_response[23]) << 32;
1039                         wwn |= ((u64) sns_response[24]) << 24;
1040                         wwn |= ((u64) sns_response[25]) << 16;
1041                         wwn |= ((u64) sns_response[26]) << 8;
1042                         wwn |= ((u64) sns_response[27]);
1043                         if (hostdata->port_id >> 8 != port_id >> 8) {
1044                                 DEBUG_FABRIC(printk("qlogicfc%d : adding a fabric port: %x\n", hostdata->host_id, port_id));
1045                                 param[0] = MBOX_PORT_LOGIN;
1046                                 param[1] = loop_id << 8;
1047                                 param[2] = (u_short) (port_id >> 16);
1048                                 param[3] = (u_short) (port_id);
1049
1050                                 isp2x00_mbox_command(host, param);
1051
1052                                 if (param[0] == MBOX_COMMAND_COMPLETE) {
1053                                         port_db[scsi_id].wwn = wwn;
1054                                         port_db[scsi_id].loop_id = loop_id;
1055                                         loop_id++;
1056                                         scsi_id++;
1057                                 } else {
1058                                         printk("qlogicfc%d : Error performing port login %x\n", hostdata->host_id, param[0]);
1059                                         DEBUG_FABRIC(printk("qlogicfc%d : loop_id: %x\n", hostdata->host_id, loop_id));
1060                                         param[0] = MBOX_PORT_LOGOUT;
1061                                         param[1] = loop_id << 8;
1062                                         param[2] = 0;
1063                                         param[3] = 0;
1064
1065                                         isp2x00_mbox_command(host, param);
1066
1067                                 }
1068
1069                         }
1070                         if (hostdata->port_id == port_id)
1071                                 done = 1;
1072                 } else {
1073                         printk("qlogicfc%d : Get All Next failed %x.\n", hostdata->host_id, param[0]);
1074                         pci_free_consistent(hostdata->pci_dev, sizeof(*req) + 608, req, busaddr);
1075                         return 0;
1076                 }
1077         }
1078
1079         pci_free_consistent(hostdata->pci_dev, sizeof(*req) + 608, req, busaddr);
1080         return 1;
1081 }
1082
1083 #endif                          /* ISP2x00_FABRIC */
1084
1085
1086 int isp2x00_release(struct Scsi_Host *host)
1087 {
1088         struct isp2x00_hostdata *hostdata;
1089         dma_addr_t busaddr;
1090
1091         ENTER("isp2x00_release");
1092
1093         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1094
1095         outw(0x0, host->io_port + PCI_INTER_CTL);
1096         free_irq(host->irq, host);
1097
1098         release_region(host->io_port, 0xff);
1099
1100         busaddr = pci64_dma_build(le32_to_cpu(hostdata->control_block.res_queue_addr_high),
1101                                   le32_to_cpu(hostdata->control_block.res_queue_addr_lo));
1102         pci_free_consistent(hostdata->pci_dev, RES_SIZE + REQ_SIZE, hostdata->res, busaddr);
1103
1104         LEAVE("isp2x00_release");
1105
1106         return 0;
1107 }
1108
1109
1110 const char *isp2x00_info(struct Scsi_Host *host)
1111 {
1112         static char buf[80];
1113         struct isp2x00_hostdata *hostdata;
1114         ENTER("isp2x00_info");
1115
1116         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1117         sprintf(buf,
1118                 "QLogic ISP%04x SCSI on PCI bus %02x device %02x irq %d base 0x%lx",
1119                 hostdata->pci_dev->device, hostdata->pci_dev->bus->number, hostdata->pci_dev->devfn, host->irq,
1120                 host->io_port);
1121
1122
1123         LEAVE("isp2x00_info");
1124
1125         return buf;
1126 }
1127
1128
1129 /*
1130  * The middle SCSI layer ensures that queuecommand never gets invoked
1131  * concurrently with itself or the interrupt handler (though the
1132  * interrupt handler may call this routine as part of
1133  * request-completion handling).
1134  */
1135 int isp2x00_queuecommand(Scsi_Cmnd * Cmnd, void (*done) (Scsi_Cmnd *))
1136 {
1137         int i, sg_count, n, num_free;
1138         u_int in_ptr, out_ptr;
1139         struct dataseg *ds;
1140         struct scatterlist *sg;
1141         struct Command_Entry *cmd;
1142         struct Continuation_Entry *cont;
1143         struct Scsi_Host *host;
1144         struct isp2x00_hostdata *hostdata;
1145
1146         ENTER("isp2x00_queuecommand");
1147
1148         host = Cmnd->device->host;
1149         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1150         Cmnd->scsi_done = done;
1151
1152         DEBUG(isp2x00_print_scsi_cmd(Cmnd));
1153
1154         if (hostdata->adapter_state & AS_REDO_FABRIC_PORTDB || hostdata->adapter_state & AS_REDO_LOOP_PORTDB) {
1155                 isp2x00_make_portdb(host);
1156                 hostdata->adapter_state = AS_LOOP_GOOD;
1157                 printk("qlogicfc%d : Port Database\n", hostdata->host_id);
1158                 for (i = 0; hostdata->port_db[i].wwn != 0; i++) {
1159                         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);
1160                         if (hostdata->port_db[i].loop_id != hostdata->port_db[0].loop_id || i == 0)
1161                                 printk("%x", hostdata->port_db[i].loop_id);
1162                         else
1163                                 printk("Not Available");
1164                         printk("\n");
1165                 }
1166         }
1167         if (hostdata->adapter_state == AS_FIRMWARE_DEAD) {
1168                 printk("qlogicfc%d : The firmware is dead, just return.\n", hostdata->host_id);
1169                 host->max_id = 0;
1170                 return 0;
1171         }
1172
1173         out_ptr = inw(host->io_port + MBOX4);
1174         in_ptr = hostdata->req_in_ptr;
1175
1176         DEBUG(printk("qlogicfc%d : request queue depth %d\n", hostdata->host_id,
1177                      REQ_QUEUE_DEPTH(in_ptr, out_ptr)));
1178
1179         cmd = (struct Command_Entry *) &hostdata->req[in_ptr*QUEUE_ENTRY_LEN];
1180         in_ptr = (in_ptr + 1) & QLOGICFC_REQ_QUEUE_LEN;
1181         if (in_ptr == out_ptr) {
1182                 DEBUG(printk("qlogicfc%d : request queue overflow\n", hostdata->host_id));
1183                 return 1;
1184         }
1185         if (hostdata->send_marker) {
1186                 struct Marker_Entry *marker;
1187
1188                 TRACE("queue marker", in_ptr, 0);
1189
1190                 DEBUG(printk("qlogicfc%d : adding marker entry\n", hostdata->host_id));
1191                 marker = (struct Marker_Entry *) cmd;
1192                 memset(marker, 0, sizeof(struct Marker_Entry));
1193
1194                 marker->hdr.entry_type = ENTRY_MARKER;
1195                 marker->hdr.entry_cnt = 1;
1196                 marker->modifier = SYNC_ALL;
1197
1198                 hostdata->send_marker = 0;
1199
1200                 if (((in_ptr + 1) & QLOGICFC_REQ_QUEUE_LEN) == out_ptr) {
1201                         outw(in_ptr, host->io_port + MBOX4);
1202                         hostdata->req_in_ptr = in_ptr;
1203                         DEBUG(printk("qlogicfc%d : request queue overflow\n", hostdata->host_id));
1204                         return 1;
1205                 }
1206                 cmd = (struct Command_Entry *) &hostdata->req[in_ptr*QUEUE_ENTRY_LEN];
1207                 in_ptr = (in_ptr + 1) & QLOGICFC_REQ_QUEUE_LEN;
1208         }
1209         TRACE("queue command", in_ptr, Cmnd);
1210
1211         memset(cmd, 0, sizeof(struct Command_Entry));
1212
1213         /* find a free handle mapping slot */
1214         for (i = in_ptr; i != (in_ptr - 1) && hostdata->handle_ptrs[i]; i = ((i + 1) % (QLOGICFC_REQ_QUEUE_LEN + 1)));
1215
1216         if (!hostdata->handle_ptrs[i]) {
1217                 cmd->handle = cpu_to_le32(i);
1218                 hostdata->handle_ptrs[i] = Cmnd;
1219                 hostdata->handle_serials[i] = Cmnd->serial_number;
1220         } else {
1221                 printk("qlogicfc%d : no handle slots, this should not happen.\n", hostdata->host_id);
1222                 printk("hostdata->queued is %x, in_ptr: %x\n", hostdata->queued, in_ptr);
1223                 for (i = 0; i <= QLOGICFC_REQ_QUEUE_LEN; i++){
1224                         if (!hostdata->handle_ptrs[i]){
1225                                 printk("slot %d has %p\n", i, hostdata->handle_ptrs[i]);
1226                         }
1227                 }
1228                 return 1;
1229         }
1230
1231         cmd->hdr.entry_type = ENTRY_COMMAND;
1232         cmd->hdr.entry_cnt = 1;
1233         cmd->target_lun = Cmnd->device->lun;
1234         cmd->expanded_lun = cpu_to_le16(Cmnd->device->lun);
1235 #if ISP2x00_PORTDB
1236         cmd->target_id = hostdata->port_db[Cmnd->device->id].loop_id;
1237 #else
1238         cmd->target_id = Cmnd->target;
1239 #endif
1240         cmd->total_byte_cnt = cpu_to_le32(Cmnd->request_bufflen);
1241         cmd->time_out = 0;
1242         memcpy(cmd->cdb, Cmnd->cmnd, Cmnd->cmd_len);
1243
1244         if (Cmnd->use_sg) {
1245                 sg = (struct scatterlist *) Cmnd->request_buffer;
1246                 sg_count = pci_map_sg(hostdata->pci_dev, sg, Cmnd->use_sg, scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1247                 cmd->segment_cnt = cpu_to_le16(sg_count);
1248                 ds = cmd->dataseg;
1249                 /* fill in first two sg entries: */
1250                 n = sg_count;
1251                 if (n > DATASEGS_PER_COMMAND)
1252                         n = DATASEGS_PER_COMMAND;
1253
1254                 for (i = 0; i < n; i++) {
1255                         ds[i].d_base = cpu_to_le32(pci64_dma_lo32(sg_dma_address(sg)));
1256                         ds[i].d_base_hi = cpu_to_le32(pci64_dma_hi32(sg_dma_address(sg)));
1257                         ds[i].d_count = cpu_to_le32(sg_dma_len(sg));
1258                         ++sg;
1259                 }
1260                 sg_count -= DATASEGS_PER_COMMAND;
1261
1262                 while (sg_count > 0) {
1263                         ++cmd->hdr.entry_cnt;
1264                         cont = (struct Continuation_Entry *)
1265                             &hostdata->req[in_ptr*QUEUE_ENTRY_LEN];
1266                         memset(cont, 0, sizeof(struct Continuation_Entry));
1267                         in_ptr = (in_ptr + 1) & QLOGICFC_REQ_QUEUE_LEN;
1268                         if (in_ptr == out_ptr) {
1269                                 DEBUG(printk("qlogicfc%d : unexpected request queue overflow\n", hostdata->host_id));
1270                                 return 1;
1271                         }
1272                         TRACE("queue continuation", in_ptr, 0);
1273                         cont->hdr.entry_type = ENTRY_CONTINUATION;
1274                         ds = cont->dataseg;
1275                         n = sg_count;
1276                         if (n > DATASEGS_PER_CONT)
1277                                 n = DATASEGS_PER_CONT;
1278                         for (i = 0; i < n; ++i) {
1279                                 ds[i].d_base = cpu_to_le32(pci64_dma_lo32(sg_dma_address(sg)));
1280                                 ds[i].d_base_hi = cpu_to_le32(pci64_dma_hi32(sg_dma_address(sg)));
1281                                 ds[i].d_count = cpu_to_le32(sg_dma_len(sg));
1282                                 ++sg;
1283                         }
1284                         sg_count -= n;
1285                 }
1286         } else if (Cmnd->request_bufflen && Cmnd->sc_data_direction != PCI_DMA_NONE) {
1287                 struct page *page = virt_to_page(Cmnd->request_buffer);
1288                 unsigned long offset = offset_in_page(Cmnd->request_buffer);
1289                 dma_addr_t busaddr = pci_map_page(hostdata->pci_dev,
1290                                                   page, offset,
1291                                                   Cmnd->request_bufflen,
1292                                                   scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1293                 Cmnd->SCp.dma_handle = busaddr;
1294
1295                 cmd->dataseg[0].d_base = cpu_to_le32(pci64_dma_lo32(busaddr));
1296                 cmd->dataseg[0].d_base_hi = cpu_to_le32(pci64_dma_hi32(busaddr));
1297                 cmd->dataseg[0].d_count = cpu_to_le32(Cmnd->request_bufflen);
1298                 cmd->segment_cnt = cpu_to_le16(1);
1299         } else {
1300                 cmd->dataseg[0].d_base = 0;
1301                 cmd->dataseg[0].d_base_hi = 0;
1302                 cmd->segment_cnt = cpu_to_le16(1); /* Shouldn't this be 0? */
1303         }
1304
1305         if (Cmnd->sc_data_direction == SCSI_DATA_WRITE)
1306                 cmd->control_flags = cpu_to_le16(CFLAG_WRITE);
1307         else
1308                 cmd->control_flags = cpu_to_le16(CFLAG_READ);
1309
1310         if (Cmnd->device->tagged_supported) {
1311                 if ((jiffies - hostdata->tag_ages[Cmnd->device->id]) > (2 * ISP_TIMEOUT)) {
1312                         cmd->control_flags |= cpu_to_le16(CFLAG_ORDERED_TAG);
1313                         hostdata->tag_ages[Cmnd->device->id] = jiffies;
1314                 } else
1315                         switch (Cmnd->tag) {
1316                         case HEAD_OF_QUEUE_TAG:
1317                                 cmd->control_flags |= cpu_to_le16(CFLAG_HEAD_TAG);
1318                                 break;
1319                         case ORDERED_QUEUE_TAG:
1320                                 cmd->control_flags |= cpu_to_le16(CFLAG_ORDERED_TAG);
1321                                 break;
1322                         default:
1323                                 cmd->control_flags |= cpu_to_le16(CFLAG_SIMPLE_TAG);
1324                                 break;
1325                 }
1326         }
1327         /*
1328          * TEST_UNIT_READY commands from scsi_scan will fail due to "overlapped
1329          * commands attempted" unless we setup at least a simple queue (midlayer
1330          * will embelish this once it can do an INQUIRY command to the device)
1331          */
1332         else
1333                 cmd->control_flags |= cpu_to_le16(CFLAG_SIMPLE_TAG);
1334         outw(in_ptr, host->io_port + MBOX4);
1335         hostdata->req_in_ptr = in_ptr;
1336
1337         hostdata->queued++;
1338
1339         num_free = QLOGICFC_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr);
1340         num_free = (num_free > 2) ? num_free - 2 : 0;
1341        host->can_queue = host->host_busy + num_free;
1342         if (host->can_queue > QLOGICFC_REQ_QUEUE_LEN)
1343                 host->can_queue = QLOGICFC_REQ_QUEUE_LEN;
1344         host->sg_tablesize = QLOGICFC_MAX_SG(num_free);
1345
1346         LEAVE("isp2x00_queuecommand");
1347
1348         return 0;
1349 }
1350
1351
1352 /* we have received an event, such as a lip or an RSCN, which may mean that
1353  * our port database is incorrect so the port database must be recreated.
1354  */
1355 static void redo_port_db(unsigned long arg)
1356 {
1357
1358         struct Scsi_Host * host = (struct Scsi_Host *) arg;
1359         struct isp2x00_hostdata * hostdata;
1360         unsigned long flags;
1361         int i;
1362
1363         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1364         hostdata->explore_timer.data = 0;
1365         del_timer(&hostdata->explore_timer);
1366
1367         spin_lock_irqsave(host->host_lock, flags);
1368
1369         if (hostdata->adapter_state & AS_REDO_FABRIC_PORTDB || hostdata->adapter_state & AS_REDO_LOOP_PORTDB) {
1370                 isp2x00_make_portdb(host);
1371                 printk("qlogicfc%d : Port Database\n", hostdata->host_id);
1372                 for (i = 0; hostdata->port_db[i].wwn != 0; i++) {
1373                         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);
1374                         if (hostdata->port_db[i].loop_id != hostdata->port_db[0].loop_id || i == 0)
1375                                 printk("%x", hostdata->port_db[i].loop_id);
1376                         else
1377                                 printk("Not Available");
1378                         printk("\n");
1379                 }
1380
1381                 for (i = 0; i < QLOGICFC_REQ_QUEUE_LEN; i++){
1382                         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)){
1383                                 if (hostdata->port_db[hostdata->handle_ptrs[i]->device->id].loop_id != hostdata->port_db[0].loop_id){
1384                                         Scsi_Cmnd *Cmnd = hostdata->handle_ptrs[i];
1385
1386                                          if (Cmnd->use_sg)
1387                                                  pci_unmap_sg(hostdata->pci_dev,
1388                                                               (struct scatterlist *)Cmnd->buffer,
1389                                                               Cmnd->use_sg,
1390                                                               scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1391                                          else if (Cmnd->request_bufflen &&
1392                                                   Cmnd->sc_data_direction != PCI_DMA_NONE) {
1393                                                  pci_unmap_page(hostdata->pci_dev,
1394                                                                 Cmnd->SCp.dma_handle,
1395                                                                 Cmnd->request_bufflen,
1396                                                                 scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1397                                          }
1398
1399                                          hostdata->handle_ptrs[i]->result = DID_SOFT_ERROR << 16;
1400
1401                                          if (hostdata->handle_ptrs[i]->scsi_done){
1402                                            (*hostdata->handle_ptrs[i]->scsi_done) (hostdata->handle_ptrs[i]);
1403                                          }
1404                                          else printk("qlogicfc%d : done is null?\n", hostdata->host_id);
1405                                          hostdata->handle_ptrs[i] = NULL;
1406                                          hostdata->handle_serials[i] = 0;
1407                                 }
1408                         }
1409                 }
1410
1411                 hostdata->adapter_state = AS_LOOP_GOOD;
1412         }
1413
1414         spin_unlock_irqrestore(host->host_lock, flags);
1415
1416 }
1417
1418 #define ASYNC_EVENT_INTERRUPT   0x01
1419
1420 irqreturn_t do_isp2x00_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
1421 {
1422         struct Scsi_Host *host = dev_id;
1423         unsigned long flags;
1424
1425         spin_lock_irqsave(host->host_lock, flags);
1426         isp2x00_intr_handler(irq, dev_id, regs);
1427         spin_unlock_irqrestore(host->host_lock, flags);
1428
1429         return IRQ_HANDLED;
1430 }
1431
1432 void isp2x00_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
1433 {
1434         Scsi_Cmnd *Cmnd;
1435         struct Status_Entry *sts;
1436         struct Scsi_Host *host = dev_id;
1437         struct isp2x00_hostdata *hostdata;
1438         u_int in_ptr, out_ptr, handle, num_free;
1439         u_short status;
1440
1441         ENTER_INTR("isp2x00_intr_handler");
1442
1443         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1444
1445         DEBUG_INTR(printk("qlogicfc%d : interrupt on line %d\n", hostdata->host_id, irq));
1446
1447         if (!(inw(host->io_port + PCI_INTER_STS) & 0x08)) {
1448                 /* spurious interrupts can happen legally */
1449                 DEBUG_INTR(printk("qlogicfc%d : got spurious interrupt\n", hostdata->host_id));
1450                 return;
1451         }
1452         in_ptr = inw(host->io_port + MBOX5);
1453         out_ptr = hostdata->res_out_ptr;
1454
1455         if ((inw(host->io_port + PCI_SEMAPHORE) & ASYNC_EVENT_INTERRUPT)) {
1456                 status = inw(host->io_port + MBOX0);
1457
1458                 DEBUG_INTR(printk("qlogicfc%d : mbox completion status: %x\n",
1459                                   hostdata->host_id, status));
1460
1461                 switch (status) {
1462                 case LOOP_UP:
1463                 case POINT_TO_POINT_UP:
1464                         printk("qlogicfc%d : Link is Up\n", hostdata->host_id);
1465                         hostdata->adapter_state = AS_REDO_FABRIC_PORTDB | AS_REDO_LOOP_PORTDB;
1466                         break;
1467                 case LOOP_DOWN:
1468                         printk("qlogicfc%d : Link is Down\n", hostdata->host_id);
1469                         hostdata->adapter_state = AS_LOOP_DOWN;
1470                         break;
1471                 case CONNECTION_MODE:
1472                         printk("received CONNECTION_MODE irq %x\n", inw(host->io_port + MBOX1));
1473                         break;
1474                 case CHANGE_NOTIFICATION:
1475                         printk("qlogicfc%d : RSCN Received\n", hostdata->host_id);
1476                         if (hostdata->adapter_state == AS_LOOP_GOOD)
1477                                 hostdata->adapter_state = AS_REDO_FABRIC_PORTDB;
1478                         break;
1479                 case LIP_OCCURRED:
1480                 case LIP_RECEIVED:
1481                         printk("qlogicfc%d : Loop Reinitialized\n", hostdata->host_id);
1482                         if (hostdata->adapter_state == AS_LOOP_GOOD)
1483                                 hostdata->adapter_state = AS_REDO_LOOP_PORTDB;
1484                         break;
1485                 case SYSTEM_ERROR:
1486                         printk("qlogicfc%d : The firmware just choked.\n", hostdata->host_id);
1487                         hostdata->adapter_state = AS_FIRMWARE_DEAD;
1488                         break;
1489                 case SCSI_COMMAND_COMPLETE:
1490                         handle = inw(host->io_port + MBOX1) | (inw(host->io_port + MBOX2) << 16);
1491                         Cmnd = hostdata->handle_ptrs[handle];
1492                         hostdata->handle_ptrs[handle] = NULL;
1493                         hostdata->handle_serials[handle] = 0;
1494                         hostdata->queued--;
1495                         if (Cmnd != NULL) {
1496                                 if (Cmnd->use_sg)
1497                                         pci_unmap_sg(hostdata->pci_dev,
1498                                                      (struct scatterlist *)Cmnd->buffer,
1499                                                      Cmnd->use_sg,
1500                                                      scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1501                                 else if (Cmnd->request_bufflen &&
1502                                          Cmnd->sc_data_direction != PCI_DMA_NONE)
1503                                         pci_unmap_page(hostdata->pci_dev,
1504                                                        Cmnd->SCp.dma_handle,
1505                                                        Cmnd->request_bufflen,
1506                                                        scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1507                                 Cmnd->result = 0x0;
1508                                 (*Cmnd->scsi_done) (Cmnd);
1509                         } else
1510                                 printk("qlogicfc%d.c : got a null value out of handle_ptrs, this sucks\n", hostdata->host_id);
1511                         break;
1512                 case MBOX_COMMAND_COMPLETE:
1513                 case INVALID_COMMAND:
1514                 case HOST_INTERFACE_ERROR:
1515                 case TEST_FAILED:
1516                 case COMMAND_ERROR:
1517                 case COMMAND_PARAM_ERROR:
1518                 case PORT_ID_USED:
1519                 case LOOP_ID_USED:
1520                 case ALL_IDS_USED:
1521                         hostdata->mbox_done = 1;
1522                         outw(HCCR_CLEAR_RISC_INTR, host->io_port + HOST_HCCR);
1523                         return;
1524                 default:
1525                         printk("qlogicfc%d : got an unknown status? %x\n", hostdata->host_id, status);
1526                 }
1527                 if ((hostdata->adapter_state & AS_REDO_LOOP_PORTDB || hostdata->adapter_state & AS_REDO_FABRIC_PORTDB) && hostdata->explore_timer.data == 0){
1528                         hostdata->explore_timer.function = redo_port_db;
1529                         hostdata->explore_timer.data = (unsigned long)host;
1530                         hostdata->explore_timer.expires = jiffies + (HZ/4);
1531                         init_timer(&hostdata->explore_timer);
1532                         add_timer(&hostdata->explore_timer);
1533                 }
1534                 outw(0x0, host->io_port + PCI_SEMAPHORE);
1535         } else {
1536                 DEBUG_INTR(printk("qlogicfc%d : response queue update\n", hostdata->host_id));
1537                 DEBUG_INTR(printk("qlogicfc%d : response queue depth %d\n", hostdata->host_id, RES_QUEUE_DEPTH(in_ptr, out_ptr)));
1538
1539                 while (out_ptr != in_ptr) {
1540                         unsigned le_hand;
1541                         sts = (struct Status_Entry *) &hostdata->res[out_ptr*QUEUE_ENTRY_LEN];
1542                         out_ptr = (out_ptr + 1) & RES_QUEUE_LEN;
1543
1544                         TRACE("done", out_ptr, Cmnd);
1545                         DEBUG_INTR(isp2x00_print_status_entry(sts));
1546                         le_hand = le32_to_cpu(sts->handle);
1547                         if (sts->hdr.entry_type == ENTRY_STATUS && (Cmnd = hostdata->handle_ptrs[le_hand])) {
1548                                 Cmnd->result = isp2x00_return_status(Cmnd, sts);
1549                                 hostdata->queued--;
1550
1551                                 if (Cmnd->use_sg)
1552                                         pci_unmap_sg(hostdata->pci_dev,
1553                                                      (struct scatterlist *)Cmnd->buffer, Cmnd->use_sg,
1554                                                      scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1555                                 else if (Cmnd->request_bufflen && Cmnd->sc_data_direction != PCI_DMA_NONE)
1556                                         pci_unmap_page(hostdata->pci_dev,
1557                                                        Cmnd->SCp.dma_handle,
1558                                                        Cmnd->request_bufflen,
1559                                                        scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1560
1561                                 /*
1562                                  * if any of the following are true we do not
1563                                  * call scsi_done.  if the status is CS_ABORTED
1564                                  * we don't have to call done because the upper
1565                                  * level should already know its aborted.
1566                                  */
1567                                 if (hostdata->handle_serials[le_hand] != Cmnd->serial_number
1568                                     || le16_to_cpu(sts->completion_status) == CS_ABORTED){
1569                                         hostdata->handle_serials[le_hand] = 0;
1570                                         hostdata->handle_ptrs[le_hand] = NULL;
1571                                         outw(out_ptr, host->io_port + MBOX5);
1572                                         continue;
1573                                 }
1574                                 /*
1575                                  * if we get back an error indicating the port
1576                                  * is not there or if the link is down and
1577                                  * this is a device that used to be there
1578                                  * allow the command to timeout.
1579                                  * the device may well be back in a couple of
1580                                  * seconds.
1581                                  */
1582                                 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){
1583                                         outw(out_ptr, host->io_port + MBOX5);
1584                                         continue;
1585                                 }
1586                         } else {
1587                                 outw(out_ptr, host->io_port + MBOX5);
1588                                 continue;
1589                         }
1590
1591                         hostdata->handle_ptrs[le_hand] = NULL;
1592
1593                         if (sts->completion_status == cpu_to_le16(CS_RESET_OCCURRED)
1594                             || (sts->status_flags & cpu_to_le16(STF_BUS_RESET)))
1595                                 hostdata->send_marker = 1;
1596
1597                         if (le16_to_cpu(sts->scsi_status) & 0x0200)
1598                                 memcpy(Cmnd->sense_buffer, sts->req_sense_data,
1599                                        sizeof(Cmnd->sense_buffer));
1600
1601                         outw(out_ptr, host->io_port + MBOX5);
1602
1603                         if (Cmnd->scsi_done != NULL) {
1604                                 (*Cmnd->scsi_done) (Cmnd);
1605                         } else
1606                                 printk("qlogicfc%d : Ouch, scsi done is NULL\n", hostdata->host_id);
1607                 }
1608                 hostdata->res_out_ptr = out_ptr;
1609         }
1610
1611
1612         out_ptr = inw(host->io_port + MBOX4);
1613         in_ptr = hostdata->req_in_ptr;
1614
1615         num_free = QLOGICFC_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr);
1616         num_free = (num_free > 2) ? num_free - 2 : 0;
1617        host->can_queue = host->host_busy + num_free;
1618         if (host->can_queue > QLOGICFC_REQ_QUEUE_LEN)
1619                 host->can_queue = QLOGICFC_REQ_QUEUE_LEN;
1620         host->sg_tablesize = QLOGICFC_MAX_SG(num_free);
1621
1622         outw(HCCR_CLEAR_RISC_INTR, host->io_port + HOST_HCCR);
1623         LEAVE_INTR("isp2x00_intr_handler");
1624 }
1625
1626
1627 static int isp2x00_return_status(Scsi_Cmnd *Cmnd, struct Status_Entry *sts)
1628 {
1629         int host_status = DID_ERROR;
1630 #if DEBUG_ISP2x00_INTR
1631         static char *reason[] =
1632         {
1633                 "DID_OK",
1634                 "DID_NO_CONNECT",
1635                 "DID_BUS_BUSY",
1636                 "DID_TIME_OUT",
1637                 "DID_BAD_TARGET",
1638                 "DID_ABORT",
1639                 "DID_PARITY",
1640                 "DID_ERROR",
1641                 "DID_RESET",
1642                 "DID_BAD_INTR"
1643         };
1644 #endif                          /* DEBUG_ISP2x00_INTR */
1645
1646         ENTER("isp2x00_return_status");
1647
1648         DEBUG(printk("qlogicfc : completion status = 0x%04x\n",
1649                      le16_to_cpu(sts->completion_status)));
1650
1651         switch (le16_to_cpu(sts->completion_status)) {
1652         case CS_COMPLETE:
1653                 host_status = DID_OK;
1654                 break;
1655         case CS_DMA_ERROR:
1656                 host_status = DID_ERROR;
1657                 break;
1658         case CS_RESET_OCCURRED:
1659                 host_status = DID_RESET;
1660                 break;
1661         case CS_ABORTED:
1662                 host_status = DID_ABORT;
1663                 break;
1664         case CS_TIMEOUT:
1665                 host_status = DID_TIME_OUT;
1666                 break;
1667         case CS_DATA_OVERRUN:
1668                 host_status = DID_ERROR;
1669                 break;
1670         case CS_DATA_UNDERRUN:
1671                 if (Cmnd->underflow <= (Cmnd->request_bufflen - le32_to_cpu(sts->residual)))
1672                         host_status = DID_OK;
1673                 else
1674                         host_status = DID_ERROR;
1675                 break;
1676         case CS_PORT_UNAVAILABLE:
1677         case CS_PORT_LOGGED_OUT:
1678         case CS_PORT_CONFIG_CHANGED:
1679                 host_status = DID_BAD_TARGET;
1680                 break;
1681         case CS_QUEUE_FULL:
1682                 host_status = DID_ERROR;
1683                 break;
1684         default:
1685                 printk("qlogicfc : unknown completion status 0x%04x\n",
1686                        le16_to_cpu(sts->completion_status));
1687                 host_status = DID_ERROR;
1688                 break;
1689         }
1690
1691         DEBUG_INTR(printk("qlogicfc : host status (%s) scsi status %x\n",
1692                           reason[host_status], le16_to_cpu(sts->scsi_status)));
1693
1694         LEAVE("isp2x00_return_status");
1695
1696         return (le16_to_cpu(sts->scsi_status) & STATUS_MASK) | (host_status << 16);
1697 }
1698
1699
1700 int isp2x00_abort(Scsi_Cmnd * Cmnd)
1701 {
1702         u_short param[8];
1703         int i;
1704         struct Scsi_Host *host;
1705         struct isp2x00_hostdata *hostdata;
1706         int return_status = SUCCESS;
1707
1708         ENTER("isp2x00_abort");
1709
1710         host = Cmnd->device->host;
1711         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1712
1713         for (i = 0; i < QLOGICFC_REQ_QUEUE_LEN; i++)
1714                 if (hostdata->handle_ptrs[i] == Cmnd)
1715                         break;
1716
1717         if (i == QLOGICFC_REQ_QUEUE_LEN){
1718                 return SUCCESS;
1719         }
1720
1721         isp2x00_disable_irqs(host);
1722
1723         param[0] = MBOX_ABORT_IOCB;
1724 #if ISP2x00_PORTDB
1725         param[1] = (((u_short) hostdata->port_db[Cmnd->device->id].loop_id) << 8) | Cmnd->device->lun;
1726 #else
1727         param[1] = (((u_short) Cmnd->target) << 8) | Cmnd->lun;
1728 #endif
1729         param[2] = i & 0xffff;
1730         param[3] = i >> 16;
1731
1732         isp2x00_mbox_command(host, param);
1733
1734         if (param[0] != MBOX_COMMAND_COMPLETE) {
1735                 printk("qlogicfc%d : scsi abort failure: %x\n", hostdata->host_id, param[0]);
1736                 if (param[0] == 0x4005)
1737                         Cmnd->result = DID_ERROR << 16;
1738                 if (param[0] == 0x4006)
1739                         Cmnd->result = DID_BAD_TARGET << 16;
1740                 return_status = FAILED;
1741         }
1742
1743         if (return_status != SUCCESS){
1744                 param[0] = MBOX_GET_FIRMWARE_STATE;
1745                 isp2x00_mbox_command(host, param);
1746                 printk("qlogicfc%d : abort failed\n", hostdata->host_id);
1747                 printk("qlogicfc%d : firmware status is %x %x\n", hostdata->host_id, param[0], param[1]);
1748         }
1749
1750         isp2x00_enable_irqs(host);
1751
1752         LEAVE("isp2x00_abort");
1753
1754         return return_status;
1755 }
1756
1757
1758 int isp2x00_reset(Scsi_Cmnd * Cmnd, unsigned int reset_flags)
1759 {
1760         u_short param[8];
1761         struct Scsi_Host *host;
1762         struct isp2x00_hostdata *hostdata;
1763         int return_status = SCSI_RESET_SUCCESS;
1764
1765         ENTER("isp2x00_reset");
1766
1767         host = Cmnd->device->host;
1768         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1769         param[0] = MBOX_BUS_RESET;
1770         param[1] = 3;
1771
1772         isp2x00_disable_irqs(host);
1773
1774         isp2x00_mbox_command(host, param);
1775
1776         if (param[0] != MBOX_COMMAND_COMPLETE) {
1777                 printk("qlogicfc%d : scsi bus reset failure: %x\n", hostdata->host_id, param[0]);
1778                 return_status = SCSI_RESET_ERROR;
1779         }
1780         isp2x00_enable_irqs(host);
1781
1782         LEAVE("isp2x00_reset");
1783
1784         return return_status;
1785 }
1786
1787
1788 int isp2x00_biosparam(struct scsi_device *sdev, struct block_device *n,
1789                 sector_t capacity, int ip[])
1790 {
1791         int size = capacity;
1792
1793         ENTER("isp2x00_biosparam");
1794
1795         ip[0] = 64;
1796         ip[1] = 32;
1797         ip[2] = size >> 11;
1798         if (ip[2] > 1024) {
1799                 ip[0] = 255;
1800                 ip[1] = 63;
1801                 ip[2] = size / (ip[0] * ip[1]);
1802         }
1803         LEAVE("isp2x00_biosparam");
1804
1805         return 0;
1806 }
1807
1808 static int isp2x00_reset_hardware(struct Scsi_Host *host)
1809 {
1810         u_short param[8];
1811         struct isp2x00_hostdata *hostdata;
1812         int loop_count;
1813         dma_addr_t busaddr;
1814
1815         ENTER("isp2x00_reset_hardware");
1816
1817         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1818
1819         /*
1820          *      This cannot be right - PCI writes are posted
1821          *      (apparently this is hardware design flaw not software ?)
1822          */
1823
1824         outw(0x01, host->io_port + ISP_CTRL_STATUS);
1825         udelay(100);
1826         outw(HCCR_RESET, host->io_port + HOST_HCCR);
1827         udelay(100);
1828         outw(HCCR_RELEASE, host->io_port + HOST_HCCR);
1829         outw(HCCR_BIOS_DISABLE, host->io_port + HOST_HCCR);
1830
1831         loop_count = DEFAULT_LOOP_COUNT;
1832         while (--loop_count && inw(host->io_port + HOST_HCCR) == RISC_BUSY) {
1833                 barrier();
1834                 cpu_relax();
1835         }
1836         if (!loop_count)
1837                 printk("qlogicfc%d : reset_hardware loop timeout\n", hostdata->host_id);
1838
1839
1840
1841 #if DEBUG_ISP2x00
1842         printk("qlogicfc%d : mbox 0 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX0));
1843         printk("qlogicfc%d : mbox 1 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX1));
1844         printk("qlogicfc%d : mbox 2 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX2));
1845         printk("qlogicfc%d : mbox 3 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX3));
1846         printk("qlogicfc%d : mbox 4 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX4));
1847         printk("qlogicfc%d : mbox 5 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX5));
1848         printk("qlogicfc%d : mbox 6 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX6));
1849         printk("qlogicfc%d : mbox 7 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX7));
1850 #endif                          /* DEBUG_ISP2x00 */
1851
1852         DEBUG(printk("qlogicfc%d : verifying checksum\n", hostdata->host_id));
1853
1854 #if defined(CONFIG_SCSI_QLOGIC_FC_FIRMWARE)
1855         {
1856                 int i;
1857                 unsigned short * risc_code = NULL;
1858                 unsigned short risc_code_len = 0;
1859                 if (hostdata->pci_dev->device == PCI_DEVICE_ID_QLOGIC_ISP2100){
1860                         risc_code = risc_code2100;
1861                         risc_code_len = risc_code_length2100;
1862                 }
1863                 else if (hostdata->pci_dev->device == PCI_DEVICE_ID_QLOGIC_ISP2200){
1864                         risc_code = risc_code2200;
1865                         risc_code_len = risc_code_length2200;
1866                 }
1867
1868                 for (i = 0; i < risc_code_len; i++) {
1869                         param[0] = MBOX_WRITE_RAM_WORD;
1870                         param[1] = risc_code_addr01 + i;
1871                         param[2] = risc_code[i];
1872
1873                         isp2x00_mbox_command(host, param);
1874
1875                         if (param[0] != MBOX_COMMAND_COMPLETE) {
1876                                 printk("qlogicfc%d : firmware load failure\n", hostdata->host_id);
1877                                 return 1;
1878                         }
1879                 }
1880         }
1881 #endif                          /* RELOAD_FIRMWARE */
1882
1883         param[0] = MBOX_VERIFY_CHECKSUM;
1884         param[1] = risc_code_addr01;
1885
1886         isp2x00_mbox_command(host, param);
1887
1888         if (param[0] != MBOX_COMMAND_COMPLETE) {
1889                 printk("qlogicfc%d : ram checksum failure\n", hostdata->host_id);
1890                 return 1;
1891         }
1892         DEBUG(printk("qlogicfc%d : executing firmware\n", hostdata->host_id));
1893
1894         param[0] = MBOX_EXEC_FIRMWARE;
1895         param[1] = risc_code_addr01;
1896
1897         isp2x00_mbox_command(host, param);
1898
1899         param[0] = MBOX_ABOUT_FIRMWARE;
1900
1901         isp2x00_mbox_command(host, param);
1902
1903         if (param[0] != MBOX_COMMAND_COMPLETE) {
1904                 printk("qlogicfc%d : about firmware failure\n", hostdata->host_id);
1905                 return 1;
1906         }
1907         DEBUG(printk("qlogicfc%d : firmware major revision %d\n", hostdata->host_id,  param[1]));
1908         DEBUG(printk("qlogicfc%d : firmware minor revision %d\n", hostdata->host_id,  param[2]));
1909
1910 #ifdef USE_NVRAM_DEFAULTS
1911
1912         if (isp2x00_get_nvram_defaults(host, &hostdata->control_block) != 0) {
1913                 printk("qlogicfc%d : Could not read from NVRAM\n", hostdata->host_id);
1914         }
1915 #endif
1916
1917         hostdata->wwn = (u64) (cpu_to_le16(hostdata->control_block.node_name[0])) << 56;
1918         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[0]) & 0xff00) << 48;
1919         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[1]) & 0xff00) << 24;
1920         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[1]) & 0x00ff) << 48;
1921         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[2]) & 0x00ff) << 24;
1922         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[2]) & 0xff00) << 8;
1923         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[3]) & 0x00ff) << 8;
1924         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[3]) & 0xff00) >> 8;
1925
1926         /* FIXME: If the DMA transfer goes one way only, this should use
1927          *        PCI_DMA_TODEVICE and below as well.
1928          */
1929         busaddr = pci_map_page(hostdata->pci_dev,
1930                                virt_to_page(&hostdata->control_block),
1931                                offset_in_page(&hostdata->control_block),
1932                                sizeof(hostdata->control_block),
1933                                PCI_DMA_BIDIRECTIONAL);
1934
1935         param[0] = MBOX_INIT_FIRMWARE;
1936         param[2] = (u_short) (pci64_dma_lo32(busaddr) >> 16);
1937         param[3] = (u_short) (pci64_dma_lo32(busaddr) & 0xffff);
1938         param[4] = 0;
1939         param[5] = 0;
1940         param[6] = (u_short) (pci64_dma_hi32(busaddr) >> 16);
1941         param[7] = (u_short) (pci64_dma_hi32(busaddr) & 0xffff);
1942         isp2x00_mbox_command(host, param);
1943         if (param[0] != MBOX_COMMAND_COMPLETE) {
1944                 printk("qlogicfc%d.c: Ouch 0x%04x\n", hostdata->host_id,  param[0]);
1945                 pci_unmap_page(hostdata->pci_dev, busaddr,
1946                                sizeof(hostdata->control_block),
1947                                PCI_DMA_BIDIRECTIONAL);
1948                 return 1;
1949         }
1950         param[0] = MBOX_GET_FIRMWARE_STATE;
1951         isp2x00_mbox_command(host, param);
1952         if (param[0] != MBOX_COMMAND_COMPLETE) {
1953                 printk("qlogicfc%d.c: 0x%04x\n", hostdata->host_id,  param[0]);
1954                 pci_unmap_page(hostdata->pci_dev, busaddr,
1955                                sizeof(hostdata->control_block),
1956                                PCI_DMA_BIDIRECTIONAL);
1957                 return 1;
1958         }
1959
1960         pci_unmap_page(hostdata->pci_dev, busaddr,
1961                        sizeof(hostdata->control_block),
1962                        PCI_DMA_BIDIRECTIONAL);
1963         LEAVE("isp2x00_reset_hardware");
1964
1965         return 0;
1966 }
1967
1968 #ifdef USE_NVRAM_DEFAULTS
1969
1970 static int isp2x00_get_nvram_defaults(struct Scsi_Host *host, struct init_cb *control_block)
1971 {
1972
1973         u_short value;
1974         if (isp2x00_read_nvram_word(host, 0) != 0x5349)
1975                 return 1;
1976
1977         value = isp2x00_read_nvram_word(host, 8);
1978         control_block->node_name[0] = cpu_to_le16(isp2x00_read_nvram_word(host, 9));
1979         control_block->node_name[1] = cpu_to_le16(isp2x00_read_nvram_word(host, 10));
1980         control_block->node_name[2] = cpu_to_le16(isp2x00_read_nvram_word(host, 11));
1981         control_block->node_name[3] = cpu_to_le16(isp2x00_read_nvram_word(host, 12));
1982         control_block->hard_addr = cpu_to_le16(isp2x00_read_nvram_word(host, 13));
1983
1984         return 0;
1985
1986 }
1987
1988 #endif
1989
1990 static int isp2x00_init(struct Scsi_Host *sh)
1991 {
1992         u_long io_base;
1993         struct isp2x00_hostdata *hostdata;
1994         u_char revision;
1995         u_int irq;
1996         u_short command;
1997         struct pci_dev *pdev;
1998
1999
2000         ENTER("isp2x00_init");
2001
2002         hostdata = (struct isp2x00_hostdata *) sh->hostdata;
2003         pdev = hostdata->pci_dev;
2004
2005         if (pci_read_config_word(pdev, PCI_COMMAND, &command)
2006           || pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision)) {
2007                 printk("qlogicfc%d : error reading PCI configuration\n", hostdata->host_id);
2008                 return 1;
2009         }
2010         io_base = pci_resource_start(pdev, 0);
2011         irq = pdev->irq;
2012
2013
2014         if (pdev->vendor != PCI_VENDOR_ID_QLOGIC) {
2015                 printk("qlogicfc%d : 0x%04x is not QLogic vendor ID\n", hostdata->host_id,
2016                        pdev->vendor);
2017                 return 1;
2018         }
2019         if (pdev->device != PCI_DEVICE_ID_QLOGIC_ISP2100 && pdev->device != PCI_DEVICE_ID_QLOGIC_ISP2200) {
2020                 printk("qlogicfc%d : 0x%04x does not match ISP2100 or ISP2200 device id\n", hostdata->host_id,
2021                        pdev->device);
2022                 return 1;
2023         }
2024         if (!(command & PCI_COMMAND_IO) ||
2025             !(pdev->resource[0].flags & IORESOURCE_IO)) {
2026                 printk("qlogicfc%d : i/o mapping is disabled\n", hostdata->host_id);
2027                 return 1;
2028         }
2029
2030         pci_set_master(pdev);
2031         if (revision != ISP2100_REV_ID1 && revision != ISP2100_REV_ID3 && revision != ISP2200_REV_ID5)
2032                 printk("qlogicfc%d : new isp2x00 revision ID (%d)\n", hostdata->host_id,  revision);
2033
2034
2035         hostdata->revision = revision;
2036
2037         sh->irq = irq;
2038         sh->io_port = io_base;
2039
2040         LEAVE("isp2x00_init");
2041
2042         return 0;
2043 }
2044
2045 #if USE_NVRAM_DEFAULTS
2046
2047 #define NVRAM_DELAY() udelay(10)        /* 10 microsecond delay */
2048
2049
2050 u_short isp2x00_read_nvram_word(struct Scsi_Host * host, u_short byte)
2051 {
2052         int i;
2053         u_short value, output, input;
2054
2055         outw(0x2, host->io_port + PCI_NVRAM);
2056         NVRAM_DELAY();
2057         outw(0x3, host->io_port + PCI_NVRAM);
2058         NVRAM_DELAY();
2059
2060         byte &= 0xff;
2061         byte |= 0x0600;
2062         for (i = 10; i >= 0; i--) {
2063                 output = ((byte >> i) & 0x1) ? 0x4 : 0x0;
2064                 outw(output | 0x2, host->io_port + PCI_NVRAM);
2065                 NVRAM_DELAY();
2066                 outw(output | 0x3, host->io_port + PCI_NVRAM);
2067                 NVRAM_DELAY();
2068                 outw(output | 0x2, host->io_port + PCI_NVRAM);
2069                 NVRAM_DELAY();
2070         }
2071
2072         for (i = 0xf, value = 0; i >= 0; i--) {
2073                 value <<= 1;
2074                 outw(0x3, host->io_port + PCI_NVRAM);
2075                 NVRAM_DELAY();
2076                 input = inw(host->io_port + PCI_NVRAM);
2077                 NVRAM_DELAY();
2078                 outw(0x2, host->io_port + PCI_NVRAM);
2079                 NVRAM_DELAY();
2080                 if (input & 0x8)
2081                         value |= 1;
2082         }
2083
2084         outw(0x0, host->io_port + PCI_NVRAM);
2085         NVRAM_DELAY();
2086
2087         return value;
2088 }
2089
2090
2091 #endif                          /* USE_NVRAM_DEFAULTS */
2092
2093
2094
2095 /*
2096  * currently, this is only called during initialization or abort/reset,
2097  * at which times interrupts are disabled, so polling is OK, I guess...
2098  */
2099 static int isp2x00_mbox_command(struct Scsi_Host *host, u_short param[])
2100 {
2101         int loop_count;
2102         struct isp2x00_hostdata *hostdata = (struct isp2x00_hostdata *) host->hostdata;
2103
2104         if (mbox_param[param[0]] == 0 || hostdata->adapter_state == AS_FIRMWARE_DEAD)
2105                 return 1;
2106
2107         loop_count = DEFAULT_LOOP_COUNT;
2108         while (--loop_count && inw(host->io_port + HOST_HCCR) & 0x0080) {
2109                 barrier();
2110                 cpu_relax();
2111         }
2112         if (!loop_count) {
2113                 printk("qlogicfc%d : mbox_command loop timeout #1\n", hostdata->host_id);
2114                 param[0] = 0x4006;
2115                 hostdata->adapter_state = AS_FIRMWARE_DEAD;
2116                 return 1;
2117         }
2118         hostdata->mbox_done = 0;
2119
2120         if (mbox_param[param[0]] == 0)
2121                 printk("qlogicfc%d : invalid mbox command\n", hostdata->host_id);
2122
2123         if (mbox_param[param[0]] & 0x80)
2124                 outw(param[7], host->io_port + MBOX7);
2125         if (mbox_param[param[0]] & 0x40)
2126                 outw(param[6], host->io_port + MBOX6);
2127         if (mbox_param[param[0]] & 0x20)
2128                 outw(param[5], host->io_port + MBOX5);
2129         if (mbox_param[param[0]] & 0x10)
2130                 outw(param[4], host->io_port + MBOX4);
2131         if (mbox_param[param[0]] & 0x08)
2132                 outw(param[3], host->io_port + MBOX3);
2133         if (mbox_param[param[0]] & 0x04)
2134                 outw(param[2], host->io_port + MBOX2);
2135         if (mbox_param[param[0]] & 0x02)
2136                 outw(param[1], host->io_port + MBOX1);
2137         if (mbox_param[param[0]] & 0x01)
2138                 outw(param[0], host->io_port + MBOX0);
2139
2140
2141         outw(HCCR_SET_HOST_INTR, host->io_port + HOST_HCCR);
2142
2143         while (1) {
2144                 loop_count = DEFAULT_LOOP_COUNT;
2145                 while (--loop_count && !(inw(host->io_port + PCI_INTER_STS) & 0x08)) {
2146                         barrier();
2147                         cpu_relax();
2148                 }
2149
2150                 if (!loop_count) {
2151                         hostdata->adapter_state = AS_FIRMWARE_DEAD;
2152                         printk("qlogicfc%d : mbox_command loop timeout #2\n", hostdata->host_id);
2153                         break;
2154                 }
2155                 isp2x00_intr_handler(host->irq, host, NULL);
2156
2157                 if (hostdata->mbox_done == 1)
2158                         break;
2159
2160         }
2161
2162         loop_count = DEFAULT_LOOP_COUNT;
2163         while (--loop_count && inw(host->io_port + MBOX0) == 0x04) {
2164                 barrier();
2165                 cpu_relax();
2166         }
2167         if (!loop_count)
2168                 printk("qlogicfc%d : mbox_command loop timeout #3\n", hostdata->host_id);
2169
2170         param[7] = inw(host->io_port + MBOX7);
2171         param[6] = inw(host->io_port + MBOX6);
2172         param[5] = inw(host->io_port + MBOX5);
2173         param[4] = inw(host->io_port + MBOX4);
2174         param[3] = inw(host->io_port + MBOX3);
2175         param[2] = inw(host->io_port + MBOX2);
2176         param[1] = inw(host->io_port + MBOX1);
2177         param[0] = inw(host->io_port + MBOX0);
2178
2179
2180         outw(0x0, host->io_port + PCI_SEMAPHORE);
2181
2182         if (inw(host->io_port + HOST_HCCR) & 0x0080) {
2183                 hostdata->adapter_state = AS_FIRMWARE_DEAD;
2184                 printk("qlogicfc%d : mbox op is still pending\n", hostdata->host_id);
2185         }
2186         return 0;
2187 }
2188
2189 #if DEBUG_ISP2x00_INTR
2190
2191 void isp2x00_print_status_entry(struct Status_Entry *status)
2192 {
2193         printk("qlogicfc : entry count = 0x%02x, type = 0x%02x, flags = 0x%02x\n",
2194         status->hdr.entry_cnt, status->hdr.entry_type, status->hdr.flags);
2195         printk("qlogicfc : scsi status = 0x%04x, completion status = 0x%04x\n",
2196                le16_to_cpu(status->scsi_status), le16_to_cpu(status->completion_status));
2197         printk("qlogicfc : state flags = 0x%04x, status flags = 0x%04x\n",
2198                le16_to_cpu(status->state_flags), le16_to_cpu(status->status_flags));
2199         printk("qlogicfc : response info length = 0x%04x, request sense length = 0x%04x\n",
2200                le16_to_cpu(status->res_info_len), le16_to_cpu(status->req_sense_len));
2201         printk("qlogicfc : residual transfer length = 0x%08x, response = 0x%02x\n", le32_to_cpu(status->residual), status->res_info[3]);
2202
2203 }
2204
2205 #endif                         /* DEBUG_ISP2x00_INTR */
2206
2207
2208 #if DEBUG_ISP2x00
2209
2210 void isp2x00_print_scsi_cmd(Scsi_Cmnd * cmd)
2211 {
2212         int i;
2213
2214         printk("qlogicfc : target = 0x%02x, lun = 0x%02x, cmd_len = 0x%02x\n",
2215                cmd->target, cmd->lun, cmd->cmd_len);
2216         printk("qlogicfc : command = ");
2217         for (i = 0; i < cmd->cmd_len; i++)
2218                 printk("0x%02x ", cmd->cmnd[i]);
2219         printk("\n");
2220 }
2221
2222 #endif                          /* DEBUG_ISP2x00 */
2223
2224 MODULE_LICENSE("GPL");
2225
2226 static Scsi_Host_Template driver_template = {
2227         .detect                 = isp2x00_detect,
2228         .release                = isp2x00_release,
2229         .info                   = isp2x00_info,
2230         .queuecommand           = isp2x00_queuecommand,
2231         .eh_abort_handler       = isp2x00_abort,
2232         .bios_param             = isp2x00_biosparam,
2233         .can_queue              = QLOGICFC_REQ_QUEUE_LEN,
2234         .this_id                = -1,
2235         .sg_tablesize           = QLOGICFC_MAX_SG(QLOGICFC_REQ_QUEUE_LEN),
2236         .cmd_per_lun            = QLOGICFC_CMD_PER_LUN,
2237         .use_clustering         = ENABLE_CLUSTERING,
2238 };
2239 #include "scsi_module.c"