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         for (wait_time = jiffies + 5 * HZ; time_before(jiffies, wait_time);) {
 819                 barrier();
 820                 cpu_relax();
 821         }
 822 #endif
 823
 824         LEAVE("isp2x00_detect");
 825
 826         return hosts;
 827 }
 828
 829
 830 static int isp2x00_make_portdb(struct Scsi_Host *host)
 831 {
 832
 833         short param[8];
 834         int i, j;
 835         struct isp2x00_hostdata *hostdata;
 836
 837         isp2x00_disable_irqs(host);
 838
 839         hostdata = (struct isp2x00_hostdata *) host->hostdata;
 840         memset(hostdata->tempmap, 0, sizeof(hostdata->tempmap));
 841
 842 #if ISP2x00_FABRIC
 843         for (i = 0x81; i < QLOGICFC_MAX_ID; i++) {
 844                 param[0] = MBOX_PORT_LOGOUT;
 845                 param[1] = i << 8;
 846                 param[2] = 0;
 847                 param[3] = 0;
 848
 849                 isp2x00_mbox_command(host, param);
 850
 851                 if (param[0] != MBOX_COMMAND_COMPLETE) {
 852
 853                         DEBUG_FABRIC(printk("qlogicfc%d : logout failed %x  %x\n", hostdata->host_id, i, param[0]));
 854                 }
 855         }
 856 #endif
 857
 858
 859         param[0] = MBOX_GET_INIT_SCSI_ID;
 860
 861         isp2x00_mbox_command(host, param);
 862
 863         if (param[0] == MBOX_COMMAND_COMPLETE) {
 864                 hostdata->port_id = ((u_int) param[3]) << 16;
 865                 hostdata->port_id |= param[2];
 866                 hostdata->tempmap[0].loop_id = param[1];
 867                 hostdata->tempmap[0].wwn = hostdata->wwn;
 868         }
 869         else {
 870                 printk("qlogicfc%d : error getting scsi id.\n", hostdata->host_id);
 871         }
 872
 873         for (i = 0; i <=QLOGICFC_MAX_ID; i++)
 874                 hostdata->tempmap[i].loop_id = hostdata->tempmap[0].loop_id;
 875
 876         for (i = 0, j = 1; i <= QLOGICFC_MAX_LOOP_ID; i++) {
 877                 param[0] = MBOX_GET_PORT_NAME;
 878                 param[1] = (i << 8) & 0xff00;
 879
 880                 isp2x00_mbox_command(host, param);
 881
 882                 if (param[0] == MBOX_COMMAND_COMPLETE) {
 883                         hostdata->tempmap[j].loop_id = i;
 884                         hostdata->tempmap[j].wwn = ((u64) (param[2] & 0xff)) << 56;
 885                         hostdata->tempmap[j].wwn |= ((u64) ((param[2] >> 8) & 0xff)) << 48;
 886                         hostdata->tempmap[j].wwn |= ((u64) (param[3] & 0xff)) << 40;
 887                         hostdata->tempmap[j].wwn |= ((u64) ((param[3] >> 8) & 0xff)) << 32;
 888                         hostdata->tempmap[j].wwn |= ((u64) (param[6] & 0xff)) << 24;
 889                         hostdata->tempmap[j].wwn |= ((u64) ((param[6] >> 8) & 0xff)) << 16;
 890                         hostdata->tempmap[j].wwn |= ((u64) (param[7] & 0xff)) << 8;
 891                         hostdata->tempmap[j].wwn |= ((u64) ((param[7] >> 8) & 0xff));
 892
 893                         j++;
 894
 895                 }
 896         }
 897
 898
 899 #if ISP2x00_FABRIC
 900         isp2x00_init_fabric(host, hostdata->tempmap, j);
 901 #endif
 902
 903         for (i = 0; i <= QLOGICFC_MAX_ID; i++) {
 904                 if (hostdata->tempmap[i].wwn != hostdata->port_db[i].wwn) {
 905                         for (j = 0; j <= QLOGICFC_MAX_ID; j++) {
 906                                 if (hostdata->tempmap[j].wwn == hostdata->port_db[i].wwn) {
 907                                         hostdata->port_db[i].loop_id = hostdata->tempmap[j].loop_id;
 908                                         break;
 909                                 }
 910                         }
 911                         if (j == QLOGICFC_MAX_ID + 1)
 912                                 hostdata->port_db[i].loop_id = hostdata->tempmap[0].loop_id;
 913
 914                         for (j = 0; j <= QLOGICFC_MAX_ID; j++) {
 915                                 if (hostdata->port_db[j].wwn == hostdata->tempmap[i].wwn || !hostdata->port_db[j].wwn) {
 916                                         break;
 917                                 }
 918                         }
 919                         if (j == QLOGICFC_MAX_ID + 1)
 920                                 printk("qlogicfc%d : Too many scsi devices, no more room in port map.\n", hostdata->host_id);
 921                         if (!hostdata->port_db[j].wwn) {
 922                                 hostdata->port_db[j].loop_id = hostdata->tempmap[i].loop_id;
 923                                 hostdata->port_db[j].wwn = hostdata->tempmap[i].wwn;
 924                         }
 925                 } else
 926                         hostdata->port_db[i].loop_id = hostdata->tempmap[i].loop_id;
 927
 928         }
 929
 930         isp2x00_enable_irqs(host);
 931
 932         return 0;
 933 }
 934
 935
 936 #if ISP2x00_FABRIC
 937
 938 #define FABRIC_PORT          0x7e
 939 #define FABRIC_CONTROLLER    0x7f
 940 #define FABRIC_SNS           0x80
 941
 942 int isp2x00_init_fabric(struct Scsi_Host *host, struct id_name_map *port_db, int cur_scsi_id)
 943 {
 944
 945         u_short param[8];
 946         u64 wwn;
 947         int done = 0;
 948         u_short loop_id = 0x81;
 949         u_short scsi_id = cur_scsi_id;
 950         u_int port_id;
 951         struct sns_cb *req;
 952         u_char *sns_response;
 953         dma_addr_t busaddr;
 954         struct isp2x00_hostdata *hostdata;
 955
 956         hostdata = (struct isp2x00_hostdata *) host->hostdata;
 957
 958         DEBUG_FABRIC(printk("qlogicfc%d : Checking for a fabric.\n", hostdata->host_id));
 959         param[0] = MBOX_GET_PORT_NAME;
 960         param[1] = (u16)FABRIC_PORT << 8;
 961
 962         isp2x00_mbox_command(host, param);
 963
 964         if (param[0] != MBOX_COMMAND_COMPLETE) {
 965                 DEBUG_FABRIC(printk("qlogicfc%d : fabric check result %x\n", hostdata->host_id, param[0]));
 966                 return 0;
 967         }
 968         printk("qlogicfc%d : Fabric found.\n", hostdata->host_id);
 969
 970         req = (struct sns_cb *)pci_alloc_consistent(hostdata->pci_dev, sizeof(*req) + 608, &busaddr);
 971
 972         if (!req){
 973                 printk("qlogicfc%d : Could not allocate DMA resources for fabric initialization\n", hostdata->host_id);
 974                 return 0;
 975         }
 976         sns_response = (u_char *)(req + 1);
 977
 978         if (hostdata->adapter_state & AS_REDO_LOOP_PORTDB){
 979                 memset(req, 0, sizeof(*req));
 980
 981                 req->len = cpu_to_le16(8);
 982                 req->response_low = cpu_to_le32(pci64_dma_lo32(busaddr + sizeof(*req)));
 983                 req->response_high = cpu_to_le32(pci64_dma_hi32(busaddr + sizeof(*req)));
 984                 req->sub_len = cpu_to_le16(22);
 985                 req->data[0] = 0x17;
 986                 req->data[1] = 0x02;
 987                 req->data[8] = (u_char) (hostdata->port_id & 0xff);
 988                 req->data[9] = (u_char) (hostdata->port_id >> 8 & 0xff);
 989                 req->data[10] = (u_char) (hostdata->port_id >> 16 & 0xff);
 990                 req->data[13] = 0x01;
 991                 param[0] = MBOX_SEND_SNS;
 992                 param[1] = 30;
 993                 param[2] = pci64_dma_lo32(busaddr) >> 16;
 994                 param[3] = pci64_dma_lo32(busaddr);
 995                 param[6] = pci64_dma_hi32(busaddr) >> 16;
 996                 param[7] = pci64_dma_hi32(busaddr);
 997
 998                 isp2x00_mbox_command(host, param);
 999
1000                 if (param[0] != MBOX_COMMAND_COMPLETE)
1001                         printk("qlogicfc%d : error sending RFC-4\n", hostdata->host_id);
1002         }
1003
1004         port_id = hostdata->port_id;
1005         while (!done) {
1006                 memset(req, 0, sizeof(*req));
1007
1008                 req->len = cpu_to_le16(304);
1009                 req->response_low = cpu_to_le32(pci64_dma_lo32(busaddr + sizeof(*req)));
1010                 req->response_high = cpu_to_le32(pci64_dma_hi32(busaddr + sizeof(*req)));
1011                 req->sub_len = cpu_to_le16(6);
1012                 req->data[0] = 0x00;
1013                 req->data[1] = 0x01;
1014                 req->data[8] = (u_char) (port_id & 0xff);
1015                 req->data[9] = (u_char) (port_id >> 8 & 0xff);
1016                 req->data[10] = (u_char) (port_id >> 16 & 0xff);
1017
1018                 param[0] = MBOX_SEND_SNS;
1019                 param[1] = 14;
1020                 param[2] = pci64_dma_lo32(busaddr) >> 16;
1021                 param[3] = pci64_dma_lo32(busaddr);
1022                 param[6] = pci64_dma_hi32(busaddr) >> 16;
1023                 param[7] = pci64_dma_hi32(busaddr);
1024
1025                 isp2x00_mbox_command(host, param);
1026
1027                 if (param[0] == MBOX_COMMAND_COMPLETE) {
1028                         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]));
1029                         DEBUG_FABRIC(printk("  port id: %02x%02x%02x\n", sns_response[17], sns_response[18], sns_response[19]));
1030                         port_id = ((u_int) sns_response[17]) << 16;
1031                         port_id |= ((u_int) sns_response[18]) << 8;
1032                         port_id |= ((u_int) sns_response[19]);
1033                         wwn = ((u64) sns_response[20]) << 56;
1034                         wwn |= ((u64) sns_response[21]) << 48;
1035                         wwn |= ((u64) sns_response[22]) << 40;
1036                         wwn |= ((u64) sns_response[23]) << 32;
1037                         wwn |= ((u64) sns_response[24]) << 24;
1038                         wwn |= ((u64) sns_response[25]) << 16;
1039                         wwn |= ((u64) sns_response[26]) << 8;
1040                         wwn |= ((u64) sns_response[27]);
1041                         if (hostdata->port_id >> 8 != port_id >> 8) {
1042                                 DEBUG_FABRIC(printk("qlogicfc%d : adding a fabric port: %x\n", hostdata->host_id, port_id));
1043                                 param[0] = MBOX_PORT_LOGIN;
1044                                 param[1] = loop_id << 8;
1045                                 param[2] = (u_short) (port_id >> 16);
1046                                 param[3] = (u_short) (port_id);
1047
1048                                 isp2x00_mbox_command(host, param);
1049
1050                                 if (param[0] == MBOX_COMMAND_COMPLETE) {
1051                                         port_db[scsi_id].wwn = wwn;
1052                                         port_db[scsi_id].loop_id = loop_id;
1053                                         loop_id++;
1054                                         scsi_id++;
1055                                 } else {
1056                                         printk("qlogicfc%d : Error performing port login %x\n", hostdata->host_id, param[0]);
1057                                         DEBUG_FABRIC(printk("qlogicfc%d : loop_id: %x\n", hostdata->host_id, loop_id));
1058                                         param[0] = MBOX_PORT_LOGOUT;
1059                                         param[1] = loop_id << 8;
1060                                         param[2] = 0;
1061                                         param[3] = 0;
1062
1063                                         isp2x00_mbox_command(host, param);
1064
1065                                 }
1066
1067                         }
1068                         if (hostdata->port_id == port_id)
1069                                 done = 1;
1070                 } else {
1071                         printk("qlogicfc%d : Get All Next failed %x.\n", hostdata->host_id, param[0]);
1072                         pci_free_consistent(hostdata->pci_dev, sizeof(*req) + 608, req, busaddr);
1073                         return 0;
1074                 }
1075         }
1076
1077         pci_free_consistent(hostdata->pci_dev, sizeof(*req) + 608, req, busaddr);
1078         return 1;
1079 }
1080
1081 #endif                          /* ISP2x00_FABRIC */
1082
1083
1084 int isp2x00_release(struct Scsi_Host *host)
1085 {
1086         struct isp2x00_hostdata *hostdata;
1087         dma_addr_t busaddr;
1088
1089         ENTER("isp2x00_release");
1090
1091         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1092
1093         outw(0x0, host->io_port + PCI_INTER_CTL);
1094         free_irq(host->irq, host);
1095
1096         release_region(host->io_port, 0xff);
1097
1098         busaddr = pci64_dma_build(le32_to_cpu(hostdata->control_block.res_queue_addr_high),
1099                                   le32_to_cpu(hostdata->control_block.res_queue_addr_lo));
1100         pci_free_consistent(hostdata->pci_dev, RES_SIZE + REQ_SIZE, hostdata->res, busaddr);
1101
1102         LEAVE("isp2x00_release");
1103
1104         return 0;
1105 }
1106
1107
1108 const char *isp2x00_info(struct Scsi_Host *host)
1109 {
1110         static char buf[80];
1111         struct isp2x00_hostdata *hostdata;
1112         ENTER("isp2x00_info");
1113
1114         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1115         sprintf(buf,
1116                 "QLogic ISP%04x SCSI on PCI bus %02x device %02x irq %d base 0x%lx",
1117                 hostdata->pci_dev->device, hostdata->pci_dev->bus->number, hostdata->pci_dev->devfn, host->irq,
1118                 host->io_port);
1119
1120
1121         LEAVE("isp2x00_info");
1122
1123         return buf;
1124 }
1125
1126
1127 /*
1128  * The middle SCSI layer ensures that queuecommand never gets invoked
1129  * concurrently with itself or the interrupt handler (though the
1130  * interrupt handler may call this routine as part of
1131  * request-completion handling).
1132  */
1133 int isp2x00_queuecommand(Scsi_Cmnd * Cmnd, void (*done) (Scsi_Cmnd *))
1134 {
1135         int i, sg_count, n, num_free;
1136         u_int in_ptr, out_ptr;
1137         struct dataseg *ds;
1138         struct scatterlist *sg;
1139         struct Command_Entry *cmd;
1140         struct Continuation_Entry *cont;
1141         struct Scsi_Host *host;
1142         struct isp2x00_hostdata *hostdata;
1143
1144         ENTER("isp2x00_queuecommand");
1145
1146         host = Cmnd->device->host;
1147         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1148         Cmnd->scsi_done = done;
1149
1150         DEBUG(isp2x00_print_scsi_cmd(Cmnd));
1151
1152         if (hostdata->adapter_state & AS_REDO_FABRIC_PORTDB || hostdata->adapter_state & AS_REDO_LOOP_PORTDB) {
1153                 isp2x00_make_portdb(host);
1154                 hostdata->adapter_state = AS_LOOP_GOOD;
1155                 printk("qlogicfc%d : Port Database\n", hostdata->host_id);
1156                 for (i = 0; hostdata->port_db[i].wwn != 0; i++) {
1157                         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);
1158                         if (hostdata->port_db[i].loop_id != hostdata->port_db[0].loop_id || i == 0)
1159                                 printk("%x", hostdata->port_db[i].loop_id);
1160                         else
1161                                 printk("Not Available");
1162                         printk("\n");
1163                 }
1164         }
1165         if (hostdata->adapter_state == AS_FIRMWARE_DEAD) {
1166                 printk("qlogicfc%d : The firmware is dead, just return.\n", hostdata->host_id);
1167                 host->max_id = 0;
1168                 return 0;
1169         }
1170
1171         out_ptr = inw(host->io_port + MBOX4);
1172         in_ptr = hostdata->req_in_ptr;
1173
1174         DEBUG(printk("qlogicfc%d : request queue depth %d\n", hostdata->host_id,
1175                      REQ_QUEUE_DEPTH(in_ptr, out_ptr)));
1176
1177         cmd = (struct Command_Entry *) &hostdata->req[in_ptr*QUEUE_ENTRY_LEN];
1178         in_ptr = (in_ptr + 1) & QLOGICFC_REQ_QUEUE_LEN;
1179         if (in_ptr == out_ptr) {
1180                 DEBUG(printk("qlogicfc%d : request queue overflow\n", hostdata->host_id));
1181                 return 1;
1182         }
1183         if (hostdata->send_marker) {
1184                 struct Marker_Entry *marker;
1185
1186                 TRACE("queue marker", in_ptr, 0);
1187
1188                 DEBUG(printk("qlogicfc%d : adding marker entry\n", hostdata->host_id));
1189                 marker = (struct Marker_Entry *) cmd;
1190                 memset(marker, 0, sizeof(struct Marker_Entry));
1191
1192                 marker->hdr.entry_type = ENTRY_MARKER;
1193                 marker->hdr.entry_cnt = 1;
1194                 marker->modifier = SYNC_ALL;
1195
1196                 hostdata->send_marker = 0;
1197
1198                 if (((in_ptr + 1) & QLOGICFC_REQ_QUEUE_LEN) == out_ptr) {
1199                         outw(in_ptr, host->io_port + MBOX4);
1200                         hostdata->req_in_ptr = in_ptr;
1201                         DEBUG(printk("qlogicfc%d : request queue overflow\n", hostdata->host_id));
1202                         return 1;
1203                 }
1204                 cmd = (struct Command_Entry *) &hostdata->req[in_ptr*QUEUE_ENTRY_LEN];
1205                 in_ptr = (in_ptr + 1) & QLOGICFC_REQ_QUEUE_LEN;
1206         }
1207         TRACE("queue command", in_ptr, Cmnd);
1208
1209         memset(cmd, 0, sizeof(struct Command_Entry));
1210
1211         /* find a free handle mapping slot */
1212         for (i = in_ptr; i != (in_ptr - 1) && hostdata->handle_ptrs[i]; i = ((i + 1) % (QLOGICFC_REQ_QUEUE_LEN + 1)));
1213
1214         if (!hostdata->handle_ptrs[i]) {
1215                 cmd->handle = cpu_to_le32(i);
1216                 hostdata->handle_ptrs[i] = Cmnd;
1217                 hostdata->handle_serials[i] = Cmnd->serial_number;
1218         } else {
1219                 printk("qlogicfc%d : no handle slots, this should not happen.\n", hostdata->host_id);
1220                 printk("hostdata->queued is %x, in_ptr: %x\n", hostdata->queued, in_ptr);
1221                 for (i = 0; i <= QLOGICFC_REQ_QUEUE_LEN; i++){
1222                         if (!hostdata->handle_ptrs[i]){
1223                                 printk("slot %d has %p\n", i, hostdata->handle_ptrs[i]);
1224                         }
1225                 }
1226                 return 1;
1227         }
1228
1229         cmd->hdr.entry_type = ENTRY_COMMAND;
1230         cmd->hdr.entry_cnt = 1;
1231         cmd->target_lun = Cmnd->device->lun;
1232         cmd->expanded_lun = cpu_to_le16(Cmnd->device->lun);
1233 #if ISP2x00_PORTDB
1234         cmd->target_id = hostdata->port_db[Cmnd->device->id].loop_id;
1235 #else
1236         cmd->target_id = Cmnd->target;
1237 #endif
1238         cmd->total_byte_cnt = cpu_to_le32(Cmnd->request_bufflen);
1239         cmd->time_out = 0;
1240         memcpy(cmd->cdb, Cmnd->cmnd, Cmnd->cmd_len);
1241
1242         if (Cmnd->use_sg) {
1243                 sg = (struct scatterlist *) Cmnd->request_buffer;
1244                 sg_count = pci_map_sg(hostdata->pci_dev, sg, Cmnd->use_sg, scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1245                 cmd->segment_cnt = cpu_to_le16(sg_count);
1246                 ds = cmd->dataseg;
1247                 /* fill in first two sg entries: */
1248                 n = sg_count;
1249                 if (n > DATASEGS_PER_COMMAND)
1250                         n = DATASEGS_PER_COMMAND;
1251
1252                 for (i = 0; i < n; i++) {
1253                         ds[i].d_base = cpu_to_le32(pci64_dma_lo32(sg_dma_address(sg)));
1254                         ds[i].d_base_hi = cpu_to_le32(pci64_dma_hi32(sg_dma_address(sg)));
1255                         ds[i].d_count = cpu_to_le32(sg_dma_len(sg));
1256                         ++sg;
1257                 }
1258                 sg_count -= DATASEGS_PER_COMMAND;
1259
1260                 while (sg_count > 0) {
1261                         ++cmd->hdr.entry_cnt;
1262                         cont = (struct Continuation_Entry *)
1263                             &hostdata->req[in_ptr*QUEUE_ENTRY_LEN];
1264                         memset(cont, 0, sizeof(struct Continuation_Entry));
1265                         in_ptr = (in_ptr + 1) & QLOGICFC_REQ_QUEUE_LEN;
1266                         if (in_ptr == out_ptr) {
1267                                 DEBUG(printk("qlogicfc%d : unexpected request queue overflow\n", hostdata->host_id));
1268                                 return 1;
1269                         }
1270                         TRACE("queue continuation", in_ptr, 0);
1271                         cont->hdr.entry_type = ENTRY_CONTINUATION;
1272                         ds = cont->dataseg;
1273                         n = sg_count;
1274                         if (n > DATASEGS_PER_CONT)
1275                                 n = DATASEGS_PER_CONT;
1276                         for (i = 0; i < n; ++i) {
1277                                 ds[i].d_base = cpu_to_le32(pci64_dma_lo32(sg_dma_address(sg)));
1278                                 ds[i].d_base_hi = cpu_to_le32(pci64_dma_hi32(sg_dma_address(sg)));
1279                                 ds[i].d_count = cpu_to_le32(sg_dma_len(sg));
1280                                 ++sg;
1281                         }
1282                         sg_count -= n;
1283                 }
1284         } else if (Cmnd->request_bufflen && Cmnd->sc_data_direction != PCI_DMA_NONE) {
1285                 struct page *page = virt_to_page(Cmnd->request_buffer);
1286                 unsigned long offset = offset_in_page(Cmnd->request_buffer);
1287                 dma_addr_t busaddr = pci_map_page(hostdata->pci_dev,
1288                                                   page, offset,
1289                                                   Cmnd->request_bufflen,
1290                                                   scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1291                 Cmnd->SCp.dma_handle = busaddr;
1292
1293                 cmd->dataseg[0].d_base = cpu_to_le32(pci64_dma_lo32(busaddr));
1294                 cmd->dataseg[0].d_base_hi = cpu_to_le32(pci64_dma_hi32(busaddr));
1295                 cmd->dataseg[0].d_count = cpu_to_le32(Cmnd->request_bufflen);
1296                 cmd->segment_cnt = cpu_to_le16(1);
1297         } else {
1298                 cmd->dataseg[0].d_base = 0;
1299                 cmd->dataseg[0].d_base_hi = 0;
1300                 cmd->segment_cnt = cpu_to_le16(1); /* Shouldn't this be 0? */
1301         }
1302
1303         if (Cmnd->sc_data_direction == SCSI_DATA_WRITE)
1304                 cmd->control_flags = cpu_to_le16(CFLAG_WRITE);
1305         else
1306                 cmd->control_flags = cpu_to_le16(CFLAG_READ);
1307
1308         if (Cmnd->device->tagged_supported) {
1309                 if ((jiffies - hostdata->tag_ages[Cmnd->device->id]) > (2 * ISP_TIMEOUT)) {
1310                         cmd->control_flags |= cpu_to_le16(CFLAG_ORDERED_TAG);
1311                         hostdata->tag_ages[Cmnd->device->id] = jiffies;
1312                 } else
1313                         switch (Cmnd->tag) {
1314                         case HEAD_OF_QUEUE_TAG:
1315                                 cmd->control_flags |= cpu_to_le16(CFLAG_HEAD_TAG);
1316                                 break;
1317                         case ORDERED_QUEUE_TAG:
1318                                 cmd->control_flags |= cpu_to_le16(CFLAG_ORDERED_TAG);
1319                                 break;
1320                         default:
1321                                 cmd->control_flags |= cpu_to_le16(CFLAG_SIMPLE_TAG);
1322                                 break;
1323                 }
1324         }
1325         /*
1326          * TEST_UNIT_READY commands from scsi_scan will fail due to "overlapped
1327          * commands attempted" unless we setup at least a simple queue (midlayer
1328          * will embelish this once it can do an INQUIRY command to the device)
1329          */
1330         else
1331                 cmd->control_flags |= cpu_to_le16(CFLAG_SIMPLE_TAG);
1332         outw(in_ptr, host->io_port + MBOX4);
1333         hostdata->req_in_ptr = in_ptr;
1334
1335         hostdata->queued++;
1336
1337         num_free = QLOGICFC_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr);
1338         num_free = (num_free > 2) ? num_free - 2 : 0;
1339        host->can_queue = host->host_busy + num_free;
1340         if (host->can_queue > QLOGICFC_REQ_QUEUE_LEN)
1341                 host->can_queue = QLOGICFC_REQ_QUEUE_LEN;
1342         host->sg_tablesize = QLOGICFC_MAX_SG(num_free);
1343
1344         LEAVE("isp2x00_queuecommand");
1345
1346         return 0;
1347 }
1348
1349
1350 /* we have received an event, such as a lip or an RSCN, which may mean that
1351  * our port database is incorrect so the port database must be recreated.
1352  */
1353 static void redo_port_db(unsigned long arg)
1354 {
1355
1356         struct Scsi_Host * host = (struct Scsi_Host *) arg;
1357         struct isp2x00_hostdata * hostdata;
1358         unsigned long flags;
1359         int i;
1360
1361         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1362         hostdata->explore_timer.data = 0;
1363         del_timer(&hostdata->explore_timer);
1364
1365         spin_lock_irqsave(host->host_lock, flags);
1366
1367         if (hostdata->adapter_state & AS_REDO_FABRIC_PORTDB || hostdata->adapter_state & AS_REDO_LOOP_PORTDB) {
1368                 isp2x00_make_portdb(host);
1369                 printk("qlogicfc%d : Port Database\n", hostdata->host_id);
1370                 for (i = 0; hostdata->port_db[i].wwn != 0; i++) {
1371                         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);
1372                         if (hostdata->port_db[i].loop_id != hostdata->port_db[0].loop_id || i == 0)
1373                                 printk("%x", hostdata->port_db[i].loop_id);
1374                         else
1375                                 printk("Not Available");
1376                         printk("\n");
1377                 }
1378
1379                 for (i = 0; i < QLOGICFC_REQ_QUEUE_LEN; i++){
1380                         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)){
1381                                 if (hostdata->port_db[hostdata->handle_ptrs[i]->device->id].loop_id != hostdata->port_db[0].loop_id){
1382                                         Scsi_Cmnd *Cmnd = hostdata->handle_ptrs[i];
1383
1384                                          if (Cmnd->use_sg)
1385                                                  pci_unmap_sg(hostdata->pci_dev,
1386                                                               (struct scatterlist *)Cmnd->buffer,
1387                                                               Cmnd->use_sg,
1388                                                               scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1389                                          else if (Cmnd->request_bufflen &&
1390                                                   Cmnd->sc_data_direction != PCI_DMA_NONE) {
1391                                                  pci_unmap_page(hostdata->pci_dev,
1392                                                                 Cmnd->SCp.dma_handle,
1393                                                                 Cmnd->request_bufflen,
1394                                                                 scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1395                                          }
1396
1397                                          hostdata->handle_ptrs[i]->result = DID_SOFT_ERROR << 16;
1398
1399                                          if (hostdata->handle_ptrs[i]->scsi_done){
1400                                            (*hostdata->handle_ptrs[i]->scsi_done) (hostdata->handle_ptrs[i]);
1401                                          }
1402                                          else printk("qlogicfc%d : done is null?\n", hostdata->host_id);
1403                                          hostdata->handle_ptrs[i] = NULL;
1404                                          hostdata->handle_serials[i] = 0;
1405                                 }
1406                         }
1407                 }
1408
1409                 hostdata->adapter_state = AS_LOOP_GOOD;
1410         }
1411
1412         spin_unlock_irqrestore(host->host_lock, flags);
1413
1414 }
1415
1416 #define ASYNC_EVENT_INTERRUPT   0x01
1417
1418 irqreturn_t do_isp2x00_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
1419 {
1420         struct Scsi_Host *host = dev_id;
1421         unsigned long flags;
1422
1423         spin_lock_irqsave(host->host_lock, flags);
1424         isp2x00_intr_handler(irq, dev_id, regs);
1425         spin_unlock_irqrestore(host->host_lock, flags);
1426
1427         return IRQ_HANDLED;
1428 }
1429
1430 void isp2x00_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
1431 {
1432         Scsi_Cmnd *Cmnd;
1433         struct Status_Entry *sts;
1434         struct Scsi_Host *host = dev_id;
1435         struct isp2x00_hostdata *hostdata;
1436         u_int in_ptr, out_ptr, handle, num_free;
1437         u_short status;
1438
1439         ENTER_INTR("isp2x00_intr_handler");
1440
1441         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1442
1443         DEBUG_INTR(printk("qlogicfc%d : interrupt on line %d\n", hostdata->host_id, irq));
1444
1445         if (!(inw(host->io_port + PCI_INTER_STS) & 0x08)) {
1446                 /* spurious interrupts can happen legally */
1447                 DEBUG_INTR(printk("qlogicfc%d : got spurious interrupt\n", hostdata->host_id));
1448                 return;
1449         }
1450         in_ptr = inw(host->io_port + MBOX5);
1451         out_ptr = hostdata->res_out_ptr;
1452
1453         if ((inw(host->io_port + PCI_SEMAPHORE) & ASYNC_EVENT_INTERRUPT)) {
1454                 status = inw(host->io_port + MBOX0);
1455
1456                 DEBUG_INTR(printk("qlogicfc%d : mbox completion status: %x\n",
1457                                   hostdata->host_id, status));
1458
1459                 switch (status) {
1460                 case LOOP_UP:
1461                 case POINT_TO_POINT_UP:
1462                         printk("qlogicfc%d : Link is Up\n", hostdata->host_id);
1463                         hostdata->adapter_state = AS_REDO_FABRIC_PORTDB | AS_REDO_LOOP_PORTDB;
1464                         break;
1465                 case LOOP_DOWN:
1466                         printk("qlogicfc%d : Link is Down\n", hostdata->host_id);
1467                         hostdata->adapter_state = AS_LOOP_DOWN;
1468                         break;
1469                 case CONNECTION_MODE:
1470                         printk("received CONNECTION_MODE irq %x\n", inw(host->io_port + MBOX1));
1471                         break;
1472                 case CHANGE_NOTIFICATION:
1473                         printk("qlogicfc%d : RSCN Received\n", hostdata->host_id);
1474                         if (hostdata->adapter_state == AS_LOOP_GOOD)
1475                                 hostdata->adapter_state = AS_REDO_FABRIC_PORTDB;
1476                         break;
1477                 case LIP_OCCURRED:
1478                 case LIP_RECEIVED:
1479                         printk("qlogicfc%d : Loop Reinitialized\n", hostdata->host_id);
1480                         if (hostdata->adapter_state == AS_LOOP_GOOD)
1481                                 hostdata->adapter_state = AS_REDO_LOOP_PORTDB;
1482                         break;
1483                 case SYSTEM_ERROR:
1484                         printk("qlogicfc%d : The firmware just choked.\n", hostdata->host_id);
1485                         hostdata->adapter_state = AS_FIRMWARE_DEAD;
1486                         break;
1487                 case SCSI_COMMAND_COMPLETE:
1488                         handle = inw(host->io_port + MBOX1) | (inw(host->io_port + MBOX2) << 16);
1489                         Cmnd = hostdata->handle_ptrs[handle];
1490                         hostdata->handle_ptrs[handle] = NULL;
1491                         hostdata->handle_serials[handle] = 0;
1492                         hostdata->queued--;
1493                         if (Cmnd != NULL) {
1494                                 if (Cmnd->use_sg)
1495                                         pci_unmap_sg(hostdata->pci_dev,
1496                                                      (struct scatterlist *)Cmnd->buffer,
1497                                                      Cmnd->use_sg,
1498                                                      scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1499                                 else if (Cmnd->request_bufflen &&
1500                                          Cmnd->sc_data_direction != PCI_DMA_NONE)
1501                                         pci_unmap_page(hostdata->pci_dev,
1502                                                        Cmnd->SCp.dma_handle,
1503                                                        Cmnd->request_bufflen,
1504                                                        scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1505                                 Cmnd->result = 0x0;
1506                                 (*Cmnd->scsi_done) (Cmnd);
1507                         } else
1508                                 printk("qlogicfc%d.c : got a null value out of handle_ptrs, this sucks\n", hostdata->host_id);
1509                         break;
1510                 case MBOX_COMMAND_COMPLETE:
1511                 case INVALID_COMMAND:
1512                 case HOST_INTERFACE_ERROR:
1513                 case TEST_FAILED:
1514                 case COMMAND_ERROR:
1515                 case COMMAND_PARAM_ERROR:
1516                 case PORT_ID_USED:
1517                 case LOOP_ID_USED:
1518                 case ALL_IDS_USED:
1519                         hostdata->mbox_done = 1;
1520                         outw(HCCR_CLEAR_RISC_INTR, host->io_port + HOST_HCCR);
1521                         return;
1522                 default:
1523                         printk("qlogicfc%d : got an unknown status? %x\n", hostdata->host_id, status);
1524                 }
1525                 if ((hostdata->adapter_state & AS_REDO_LOOP_PORTDB || hostdata->adapter_state & AS_REDO_FABRIC_PORTDB) && hostdata->explore_timer.data == 0){
1526                         hostdata->explore_timer.function = redo_port_db;
1527                         hostdata->explore_timer.data = (unsigned long)host;
1528                         hostdata->explore_timer.expires = jiffies + (HZ/4);
1529                         init_timer(&hostdata->explore_timer);
1530                         add_timer(&hostdata->explore_timer);
1531                 }
1532                 outw(0x0, host->io_port + PCI_SEMAPHORE);
1533         } else {
1534                 DEBUG_INTR(printk("qlogicfc%d : response queue update\n", hostdata->host_id));
1535                 DEBUG_INTR(printk("qlogicfc%d : response queue depth %d\n", hostdata->host_id, RES_QUEUE_DEPTH(in_ptr, out_ptr)));
1536
1537                 while (out_ptr != in_ptr) {
1538                         unsigned le_hand;
1539                         sts = (struct Status_Entry *) &hostdata->res[out_ptr*QUEUE_ENTRY_LEN];
1540                         out_ptr = (out_ptr + 1) & RES_QUEUE_LEN;
1541
1542                         TRACE("done", out_ptr, Cmnd);
1543                         DEBUG_INTR(isp2x00_print_status_entry(sts));
1544                         le_hand = le32_to_cpu(sts->handle);
1545                         if (sts->hdr.entry_type == ENTRY_STATUS && (Cmnd = hostdata->handle_ptrs[le_hand])) {
1546                                 Cmnd->result = isp2x00_return_status(Cmnd, sts);
1547                                 hostdata->queued--;
1548
1549                                 if (Cmnd->use_sg)
1550                                         pci_unmap_sg(hostdata->pci_dev,
1551                                                      (struct scatterlist *)Cmnd->buffer, Cmnd->use_sg,
1552                                                      scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1553                                 else if (Cmnd->request_bufflen && Cmnd->sc_data_direction != PCI_DMA_NONE)
1554                                         pci_unmap_page(hostdata->pci_dev,
1555                                                        Cmnd->SCp.dma_handle,
1556                                                        Cmnd->request_bufflen,
1557                                                        scsi_to_pci_dma_dir(Cmnd->sc_data_direction));
1558
1559                                 /*
1560                                  * if any of the following are true we do not
1561                                  * call scsi_done.  if the status is CS_ABORTED
1562                                  * we don't have to call done because the upper
1563                                  * level should already know its aborted.
1564                                  */
1565                                 if (hostdata->handle_serials[le_hand] != Cmnd->serial_number
1566                                     || le16_to_cpu(sts->completion_status) == CS_ABORTED){
1567                                         hostdata->handle_serials[le_hand] = 0;
1568                                         hostdata->handle_ptrs[le_hand] = NULL;
1569                                         outw(out_ptr, host->io_port + MBOX5);
1570                                         continue;
1571                                 }
1572                                 /*
1573                                  * if we get back an error indicating the port
1574                                  * is not there or if the link is down and
1575                                  * this is a device that used to be there
1576                                  * allow the command to timeout.
1577                                  * the device may well be back in a couple of
1578                                  * seconds.
1579                                  */
1580                                 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){
1581                                         outw(out_ptr, host->io_port + MBOX5);
1582                                         continue;
1583                                 }
1584                         } else {
1585                                 outw(out_ptr, host->io_port + MBOX5);
1586                                 continue;
1587                         }
1588
1589                         hostdata->handle_ptrs[le_hand] = NULL;
1590
1591                         if (sts->completion_status == cpu_to_le16(CS_RESET_OCCURRED)
1592                             || (sts->status_flags & cpu_to_le16(STF_BUS_RESET)))
1593                                 hostdata->send_marker = 1;
1594
1595                         if (le16_to_cpu(sts->scsi_status) & 0x0200)
1596                                 memcpy(Cmnd->sense_buffer, sts->req_sense_data,
1597                                        sizeof(Cmnd->sense_buffer));
1598
1599                         outw(out_ptr, host->io_port + MBOX5);
1600
1601                         if (Cmnd->scsi_done != NULL) {
1602                                 (*Cmnd->scsi_done) (Cmnd);
1603                         } else
1604                                 printk("qlogicfc%d : Ouch, scsi done is NULL\n", hostdata->host_id);
1605                 }
1606                 hostdata->res_out_ptr = out_ptr;
1607         }
1608
1609
1610         out_ptr = inw(host->io_port + MBOX4);
1611         in_ptr = hostdata->req_in_ptr;
1612
1613         num_free = QLOGICFC_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr);
1614         num_free = (num_free > 2) ? num_free - 2 : 0;
1615        host->can_queue = host->host_busy + num_free;
1616         if (host->can_queue > QLOGICFC_REQ_QUEUE_LEN)
1617                 host->can_queue = QLOGICFC_REQ_QUEUE_LEN;
1618         host->sg_tablesize = QLOGICFC_MAX_SG(num_free);
1619
1620         outw(HCCR_CLEAR_RISC_INTR, host->io_port + HOST_HCCR);
1621         LEAVE_INTR("isp2x00_intr_handler");
1622 }
1623
1624
1625 static int isp2x00_return_status(Scsi_Cmnd *Cmnd, struct Status_Entry *sts)
1626 {
1627         int host_status = DID_ERROR;
1628 #if DEBUG_ISP2x00_INTR
1629         static char *reason[] =
1630         {
1631                 "DID_OK",
1632                 "DID_NO_CONNECT",
1633                 "DID_BUS_BUSY",
1634                 "DID_TIME_OUT",
1635                 "DID_BAD_TARGET",
1636                 "DID_ABORT",
1637                 "DID_PARITY",
1638                 "DID_ERROR",
1639                 "DID_RESET",
1640                 "DID_BAD_INTR"
1641         };
1642 #endif                          /* DEBUG_ISP2x00_INTR */
1643
1644         ENTER("isp2x00_return_status");
1645
1646         DEBUG(printk("qlogicfc : completion status = 0x%04x\n",
1647                      le16_to_cpu(sts->completion_status)));
1648
1649         switch (le16_to_cpu(sts->completion_status)) {
1650         case CS_COMPLETE:
1651                 host_status = DID_OK;
1652                 break;
1653         case CS_DMA_ERROR:
1654                 host_status = DID_ERROR;
1655                 break;
1656         case CS_RESET_OCCURRED:
1657                 host_status = DID_RESET;
1658                 break;
1659         case CS_ABORTED:
1660                 host_status = DID_ABORT;
1661                 break;
1662         case CS_TIMEOUT:
1663                 host_status = DID_TIME_OUT;
1664                 break;
1665         case CS_DATA_OVERRUN:
1666                 host_status = DID_ERROR;
1667                 break;
1668         case CS_DATA_UNDERRUN:
1669                 if (Cmnd->underflow <= (Cmnd->request_bufflen - le32_to_cpu(sts->residual)))
1670                         host_status = DID_OK;
1671                 else
1672                         host_status = DID_ERROR;
1673                 break;
1674         case CS_PORT_UNAVAILABLE:
1675         case CS_PORT_LOGGED_OUT:
1676         case CS_PORT_CONFIG_CHANGED:
1677                 host_status = DID_BAD_TARGET;
1678                 break;
1679         case CS_QUEUE_FULL:
1680                 host_status = DID_ERROR;
1681                 break;
1682         default:
1683                 printk("qlogicfc : unknown completion status 0x%04x\n",
1684                        le16_to_cpu(sts->completion_status));
1685                 host_status = DID_ERROR;
1686                 break;
1687         }
1688
1689         DEBUG_INTR(printk("qlogicfc : host status (%s) scsi status %x\n",
1690                           reason[host_status], le16_to_cpu(sts->scsi_status)));
1691
1692         LEAVE("isp2x00_return_status");
1693
1694         return (le16_to_cpu(sts->scsi_status) & STATUS_MASK) | (host_status << 16);
1695 }
1696
1697
1698 int isp2x00_abort(Scsi_Cmnd * Cmnd)
1699 {
1700         u_short param[8];
1701         int i;
1702         struct Scsi_Host *host;
1703         struct isp2x00_hostdata *hostdata;
1704         int return_status = SUCCESS;
1705
1706         ENTER("isp2x00_abort");
1707
1708         host = Cmnd->device->host;
1709         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1710
1711         for (i = 0; i < QLOGICFC_REQ_QUEUE_LEN; i++)
1712                 if (hostdata->handle_ptrs[i] == Cmnd)
1713                         break;
1714
1715         if (i == QLOGICFC_REQ_QUEUE_LEN){
1716                 return SUCCESS;
1717         }
1718
1719         isp2x00_disable_irqs(host);
1720
1721         param[0] = MBOX_ABORT_IOCB;
1722 #if ISP2x00_PORTDB
1723         param[1] = (((u_short) hostdata->port_db[Cmnd->device->id].loop_id) << 8) | Cmnd->device->lun;
1724 #else
1725         param[1] = (((u_short) Cmnd->target) << 8) | Cmnd->lun;
1726 #endif
1727         param[2] = i & 0xffff;
1728         param[3] = i >> 16;
1729
1730         isp2x00_mbox_command(host, param);
1731
1732         if (param[0] != MBOX_COMMAND_COMPLETE) {
1733                 printk("qlogicfc%d : scsi abort failure: %x\n", hostdata->host_id, param[0]);
1734                 if (param[0] == 0x4005)
1735                         Cmnd->result = DID_ERROR << 16;
1736                 if (param[0] == 0x4006)
1737                         Cmnd->result = DID_BAD_TARGET << 16;
1738                 return_status = FAILED;
1739         }
1740
1741         if (return_status != SUCCESS){
1742                 param[0] = MBOX_GET_FIRMWARE_STATE;
1743                 isp2x00_mbox_command(host, param);
1744                 printk("qlogicfc%d : abort failed\n", hostdata->host_id);
1745                 printk("qlogicfc%d : firmware status is %x %x\n", hostdata->host_id, param[0], param[1]);
1746         }
1747
1748         isp2x00_enable_irqs(host);
1749
1750         LEAVE("isp2x00_abort");
1751
1752         return return_status;
1753 }
1754
1755
1756 int isp2x00_reset(Scsi_Cmnd * Cmnd, unsigned int reset_flags)
1757 {
1758         u_short param[8];
1759         struct Scsi_Host *host;
1760         struct isp2x00_hostdata *hostdata;
1761         int return_status = SCSI_RESET_SUCCESS;
1762
1763         ENTER("isp2x00_reset");
1764
1765         host = Cmnd->device->host;
1766         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1767         param[0] = MBOX_BUS_RESET;
1768         param[1] = 3;
1769
1770         isp2x00_disable_irqs(host);
1771
1772         isp2x00_mbox_command(host, param);
1773
1774         if (param[0] != MBOX_COMMAND_COMPLETE) {
1775                 printk("qlogicfc%d : scsi bus reset failure: %x\n", hostdata->host_id, param[0]);
1776                 return_status = SCSI_RESET_ERROR;
1777         }
1778         isp2x00_enable_irqs(host);
1779
1780         LEAVE("isp2x00_reset");
1781
1782         return return_status;
1783 }
1784
1785
1786 int isp2x00_biosparam(struct scsi_device *sdev, struct block_device *n,
1787                 sector_t capacity, int ip[])
1788 {
1789         int size = capacity;
1790
1791         ENTER("isp2x00_biosparam");
1792
1793         ip[0] = 64;
1794         ip[1] = 32;
1795         ip[2] = size >> 11;
1796         if (ip[2] > 1024) {
1797                 ip[0] = 255;
1798                 ip[1] = 63;
1799                 ip[2] = size / (ip[0] * ip[1]);
1800         }
1801         LEAVE("isp2x00_biosparam");
1802
1803         return 0;
1804 }
1805
1806 static int isp2x00_reset_hardware(struct Scsi_Host *host)
1807 {
1808         u_short param[8];
1809         struct isp2x00_hostdata *hostdata;
1810         int loop_count;
1811         dma_addr_t busaddr;
1812
1813         ENTER("isp2x00_reset_hardware");
1814
1815         hostdata = (struct isp2x00_hostdata *) host->hostdata;
1816
1817         /*
1818          *      This cannot be right - PCI writes are posted
1819          *      (apparently this is hardware design flaw not software ?)
1820          */
1821
1822         outw(0x01, host->io_port + ISP_CTRL_STATUS);
1823         udelay(100);
1824         outw(HCCR_RESET, host->io_port + HOST_HCCR);
1825         udelay(100);
1826         outw(HCCR_RELEASE, host->io_port + HOST_HCCR);
1827         outw(HCCR_BIOS_DISABLE, host->io_port + HOST_HCCR);
1828
1829         loop_count = DEFAULT_LOOP_COUNT;
1830         while (--loop_count && inw(host->io_port + HOST_HCCR) == RISC_BUSY) {
1831                 barrier();
1832                 cpu_relax();
1833         }
1834         if (!loop_count)
1835                 printk("qlogicfc%d : reset_hardware loop timeout\n", hostdata->host_id);
1836
1837
1838
1839 #if DEBUG_ISP2x00
1840         printk("qlogicfc%d : mbox 0 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX0));
1841         printk("qlogicfc%d : mbox 1 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX1));
1842         printk("qlogicfc%d : mbox 2 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX2));
1843         printk("qlogicfc%d : mbox 3 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX3));
1844         printk("qlogicfc%d : mbox 4 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX4));
1845         printk("qlogicfc%d : mbox 5 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX5));
1846         printk("qlogicfc%d : mbox 6 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX6));
1847         printk("qlogicfc%d : mbox 7 0x%04x \n", hostdata->host_id,  inw(host->io_port + MBOX7));
1848 #endif                          /* DEBUG_ISP2x00 */
1849
1850         DEBUG(printk("qlogicfc%d : verifying checksum\n", hostdata->host_id));
1851
1852 #if defined(CONFIG_SCSI_QLOGIC_FC_FIRMWARE)
1853         {
1854                 int i;
1855                 unsigned short * risc_code = NULL;
1856                 unsigned short risc_code_len = 0;
1857                 if (hostdata->pci_dev->device == PCI_DEVICE_ID_QLOGIC_ISP2100){
1858                         risc_code = risc_code2100;
1859                         risc_code_len = risc_code_length2100;
1860                 }
1861                 else if (hostdata->pci_dev->device == PCI_DEVICE_ID_QLOGIC_ISP2200){
1862                         risc_code = risc_code2200;
1863                         risc_code_len = risc_code_length2200;
1864                 }
1865
1866                 for (i = 0; i < risc_code_len; i++) {
1867                         param[0] = MBOX_WRITE_RAM_WORD;
1868                         param[1] = risc_code_addr01 + i;
1869                         param[2] = risc_code[i];
1870
1871                         isp2x00_mbox_command(host, param);
1872
1873                         if (param[0] != MBOX_COMMAND_COMPLETE) {
1874                                 printk("qlogicfc%d : firmware load failure\n", hostdata->host_id);
1875                                 return 1;
1876                         }
1877                 }
1878         }
1879 #endif                          /* RELOAD_FIRMWARE */
1880
1881         param[0] = MBOX_VERIFY_CHECKSUM;
1882         param[1] = risc_code_addr01;
1883
1884         isp2x00_mbox_command(host, param);
1885
1886         if (param[0] != MBOX_COMMAND_COMPLETE) {
1887                 printk("qlogicfc%d : ram checksum failure\n", hostdata->host_id);
1888                 return 1;
1889         }
1890         DEBUG(printk("qlogicfc%d : executing firmware\n", hostdata->host_id));
1891
1892         param[0] = MBOX_EXEC_FIRMWARE;
1893         param[1] = risc_code_addr01;
1894
1895         isp2x00_mbox_command(host, param);
1896
1897         param[0] = MBOX_ABOUT_FIRMWARE;
1898
1899         isp2x00_mbox_command(host, param);
1900
1901         if (param[0] != MBOX_COMMAND_COMPLETE) {
1902                 printk("qlogicfc%d : about firmware failure\n", hostdata->host_id);
1903                 return 1;
1904         }
1905         DEBUG(printk("qlogicfc%d : firmware major revision %d\n", hostdata->host_id,  param[1]));
1906         DEBUG(printk("qlogicfc%d : firmware minor revision %d\n", hostdata->host_id,  param[2]));
1907
1908 #ifdef USE_NVRAM_DEFAULTS
1909
1910         if (isp2x00_get_nvram_defaults(host, &hostdata->control_block) != 0) {
1911                 printk("qlogicfc%d : Could not read from NVRAM\n", hostdata->host_id);
1912         }
1913 #endif
1914
1915         hostdata->wwn = (u64) (cpu_to_le16(hostdata->control_block.node_name[0])) << 56;
1916         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[0]) & 0xff00) << 48;
1917         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[1]) & 0xff00) << 24;
1918         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[1]) & 0x00ff) << 48;
1919         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[2]) & 0x00ff) << 24;
1920         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[2]) & 0xff00) << 8;
1921         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[3]) & 0x00ff) << 8;
1922         hostdata->wwn |= (u64) (cpu_to_le16(hostdata->control_block.node_name[3]) & 0xff00) >> 8;
1923
1924         /* FIXME: If the DMA transfer goes one way only, this should use
1925          *        PCI_DMA_TODEVICE and below as well.
1926          */
1927         busaddr = pci_map_page(hostdata->pci_dev,
1928                                virt_to_page(&hostdata->control_block),
1929                                offset_in_page(&hostdata->control_block),
1930                                sizeof(hostdata->control_block),
1931                                PCI_DMA_BIDIRECTIONAL);
1932
1933         param[0] = MBOX_INIT_FIRMWARE;
1934         param[2] = (u_short) (pci64_dma_lo32(busaddr) >> 16);
1935         param[3] = (u_short) (pci64_dma_lo32(busaddr) & 0xffff);
1936         param[4] = 0;
1937         param[5] = 0;
1938         param[6] = (u_short) (pci64_dma_hi32(busaddr) >> 16);
1939         param[7] = (u_short) (pci64_dma_hi32(busaddr) & 0xffff);
1940         isp2x00_mbox_command(host, param);
1941         if (param[0] != MBOX_COMMAND_COMPLETE) {
1942                 printk("qlogicfc%d.c: Ouch 0x%04x\n", hostdata->host_id,  param[0]);
1943                 pci_unmap_page(hostdata->pci_dev, busaddr,
1944                                sizeof(hostdata->control_block),
1945                                PCI_DMA_BIDIRECTIONAL);
1946                 return 1;
1947         }
1948         param[0] = MBOX_GET_FIRMWARE_STATE;
1949         isp2x00_mbox_command(host, param);
1950         if (param[0] != MBOX_COMMAND_COMPLETE) {
1951                 printk("qlogicfc%d.c: 0x%04x\n", hostdata->host_id,  param[0]);
1952                 pci_unmap_page(hostdata->pci_dev, busaddr,
1953                                sizeof(hostdata->control_block),
1954                                PCI_DMA_BIDIRECTIONAL);
1955                 return 1;
1956         }
1957
1958         pci_unmap_page(hostdata->pci_dev, busaddr,
1959                        sizeof(hostdata->control_block),
1960                        PCI_DMA_BIDIRECTIONAL);
1961         LEAVE("isp2x00_reset_hardware");
1962
1963         return 0;
1964 }
1965
1966 #ifdef USE_NVRAM_DEFAULTS
1967
1968 static int isp2x00_get_nvram_defaults(struct Scsi_Host *host, struct init_cb *control_block)
1969 {
1970
1971         u_short value;
1972         if (isp2x00_read_nvram_word(host, 0) != 0x5349)
1973                 return 1;
1974
1975         value = isp2x00_read_nvram_word(host, 8);
1976         control_block->node_name[0] = cpu_to_le16(isp2x00_read_nvram_word(host, 9));
1977         control_block->node_name[1] = cpu_to_le16(isp2x00_read_nvram_word(host, 10));
1978         control_block->node_name[2] = cpu_to_le16(isp2x00_read_nvram_word(host, 11));
1979         control_block->node_name[3] = cpu_to_le16(isp2x00_read_nvram_word(host, 12));
1980         control_block->hard_addr = cpu_to_le16(isp2x00_read_nvram_word(host, 13));
1981
1982         return 0;
1983
1984 }
1985
1986 #endif
1987
1988 static int isp2x00_init(struct Scsi_Host *sh)
1989 {
1990         u_long io_base;
1991         struct isp2x00_hostdata *hostdata;
1992         u_char revision;
1993         u_int irq;
1994         u_short command;
1995         struct pci_dev *pdev;
1996
1997
1998         ENTER("isp2x00_init");
1999
2000         hostdata = (struct isp2x00_hostdata *) sh->hostdata;
2001         pdev = hostdata->pci_dev;
2002
2003         if (pci_read_config_word(pdev, PCI_COMMAND, &command)
2004           || pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision)) {
2005                 printk("qlogicfc%d : error reading PCI configuration\n", hostdata->host_id);
2006                 return 1;
2007         }
2008         io_base = pci_resource_start(pdev, 0);
2009         irq = pdev->irq;
2010
2011
2012         if (pdev->vendor != PCI_VENDOR_ID_QLOGIC) {
2013                 printk("qlogicfc%d : 0x%04x is not QLogic vendor ID\n", hostdata->host_id,
2014                        pdev->vendor);
2015                 return 1;
2016         }
2017         if (pdev->device != PCI_DEVICE_ID_QLOGIC_ISP2100 && pdev->device != PCI_DEVICE_ID_QLOGIC_ISP2200) {
2018                 printk("qlogicfc%d : 0x%04x does not match ISP2100 or ISP2200 device id\n", hostdata->host_id,
2019                        pdev->device);
2020                 return 1;
2021         }
2022         if (!(command & PCI_COMMAND_IO) ||
2023             !(pdev->resource[0].flags & IORESOURCE_IO)) {
2024                 printk("qlogicfc%d : i/o mapping is disabled\n", hostdata->host_id);
2025                 return 1;
2026         }
2027
2028         pci_set_master(pdev);
2029         if (revision != ISP2100_REV_ID1 && revision != ISP2100_REV_ID3 && revision != ISP2200_REV_ID5)
2030                 printk("qlogicfc%d : new isp2x00 revision ID (%d)\n", hostdata->host_id,  revision);
2031
2032
2033         hostdata->revision = revision;
2034
2035         sh->irq = irq;
2036         sh->io_port = io_base;
2037
2038         LEAVE("isp2x00_init");
2039
2040         return 0;
2041 }
2042
2043 #if USE_NVRAM_DEFAULTS
2044
2045 #define NVRAM_DELAY() udelay(10)        /* 10 microsecond delay */
2046
2047
2048 u_short isp2x00_read_nvram_word(struct Scsi_Host * host, u_short byte)
2049 {
2050         int i;
2051         u_short value, output, input;
2052
2053         outw(0x2, host->io_port + PCI_NVRAM);
2054         NVRAM_DELAY();
2055         outw(0x3, host->io_port + PCI_NVRAM);
2056         NVRAM_DELAY();
2057
2058         byte &= 0xff;
2059         byte |= 0x0600;
2060         for (i = 10; i >= 0; i--) {
2061                 output = ((byte >> i) & 0x1) ? 0x4 : 0x0;
2062                 outw(output | 0x2, host->io_port + PCI_NVRAM);
2063                 NVRAM_DELAY();
2064                 outw(output | 0x3, host->io_port + PCI_NVRAM);
2065                 NVRAM_DELAY();
2066                 outw(output | 0x2, host->io_port + PCI_NVRAM);
2067                 NVRAM_DELAY();
2068         }
2069
2070         for (i = 0xf, value = 0; i >= 0; i--) {
2071                 value <<= 1;
2072                 outw(0x3, host->io_port + PCI_NVRAM);
2073                 NVRAM_DELAY();
2074                 input = inw(host->io_port + PCI_NVRAM);
2075                 NVRAM_DELAY();
2076                 outw(0x2, host->io_port + PCI_NVRAM);
2077                 NVRAM_DELAY();
2078                 if (input & 0x8)
2079                         value |= 1;
2080         }
2081
2082         outw(0x0, host->io_port + PCI_NVRAM);
2083         NVRAM_DELAY();
2084
2085         return value;
2086 }
2087
2088
2089 #endif                          /* USE_NVRAM_DEFAULTS */
2090
2091
2092
2093 /*
2094  * currently, this is only called during initialization or abort/reset,
2095  * at which times interrupts are disabled, so polling is OK, I guess...
2096  */
2097 static int isp2x00_mbox_command(struct Scsi_Host *host, u_short param[])
2098 {
2099         int loop_count;
2100         struct isp2x00_hostdata *hostdata = (struct isp2x00_hostdata *) host->hostdata;
2101
2102         if (mbox_param[param[0]] == 0 || hostdata->adapter_state == AS_FIRMWARE_DEAD)
2103                 return 1;
2104
2105         loop_count = DEFAULT_LOOP_COUNT;
2106         while (--loop_count && inw(host->io_port + HOST_HCCR) & 0x0080) {
2107                 barrier();
2108                 cpu_relax();
2109         }
2110         if (!loop_count) {
2111                 printk("qlogicfc%d : mbox_command loop timeout #1\n", hostdata->host_id);
2112                 param[0] = 0x4006;
2113                 hostdata->adapter_state = AS_FIRMWARE_DEAD;
2114                 return 1;
2115         }
2116         hostdata->mbox_done = 0;
2117
2118         if (mbox_param[param[0]] == 0)
2119                 printk("qlogicfc%d : invalid mbox command\n", hostdata->host_id);
2120
2121         if (mbox_param[param[0]] & 0x80)
2122                 outw(param[7], host->io_port + MBOX7);
2123         if (mbox_param[param[0]] & 0x40)
2124                 outw(param[6], host->io_port + MBOX6);
2125         if (mbox_param[param[0]] & 0x20)
2126                 outw(param[5], host->io_port + MBOX5);
2127         if (mbox_param[param[0]] & 0x10)
2128                 outw(param[4], host->io_port + MBOX4);
2129         if (mbox_param[param[0]] & 0x08)
2130                 outw(param[3], host->io_port + MBOX3);
2131         if (mbox_param[param[0]] & 0x04)
2132                 outw(param[2], host->io_port + MBOX2);
2133         if (mbox_param[param[0]] & 0x02)
2134                 outw(param[1], host->io_port + MBOX1);
2135         if (mbox_param[param[0]] & 0x01)
2136                 outw(param[0], host->io_port + MBOX0);
2137
2138
2139         outw(HCCR_SET_HOST_INTR, host->io_port + HOST_HCCR);
2140
2141         while (1) {
2142                 loop_count = DEFAULT_LOOP_COUNT;
2143                 while (--loop_count && !(inw(host->io_port + PCI_INTER_STS) & 0x08)) {
2144                         barrier();
2145                         cpu_relax();
2146                 }
2147
2148                 if (!loop_count) {
2149                         hostdata->adapter_state = AS_FIRMWARE_DEAD;
2150                         printk("qlogicfc%d : mbox_command loop timeout #2\n", hostdata->host_id);
2151                         break;
2152                 }
2153                 isp2x00_intr_handler(host->irq, host, NULL);
2154
2155                 if (hostdata->mbox_done == 1)
2156                         break;
2157
2158         }
2159
2160         loop_count = DEFAULT_LOOP_COUNT;
2161         while (--loop_count && inw(host->io_port + MBOX0) == 0x04) {
2162                 barrier();
2163                 cpu_relax();
2164         }
2165         if (!loop_count)
2166                 printk("qlogicfc%d : mbox_command loop timeout #3\n", hostdata->host_id);
2167
2168         param[7] = inw(host->io_port + MBOX7);
2169         param[6] = inw(host->io_port + MBOX6);
2170         param[5] = inw(host->io_port + MBOX5);
2171         param[4] = inw(host->io_port + MBOX4);
2172         param[3] = inw(host->io_port + MBOX3);
2173         param[2] = inw(host->io_port + MBOX2);
2174         param[1] = inw(host->io_port + MBOX1);
2175         param[0] = inw(host->io_port + MBOX0);
2176
2177
2178         outw(0x0, host->io_port + PCI_SEMAPHORE);
2179
2180         if (inw(host->io_port + HOST_HCCR) & 0x0080) {
2181                 hostdata->adapter_state = AS_FIRMWARE_DEAD;
2182                 printk("qlogicfc%d : mbox op is still pending\n", hostdata->host_id);
2183         }
2184         return 0;
2185 }
2186
2187 #if DEBUG_ISP2x00_INTR
2188
2189 void isp2x00_print_status_entry(struct Status_Entry *status)
2190 {
2191         printk("qlogicfc : entry count = 0x%02x, type = 0x%02x, flags = 0x%02x\n",
2192         status->hdr.entry_cnt, status->hdr.entry_type, status->hdr.flags);
2193         printk("qlogicfc : scsi status = 0x%04x, completion status = 0x%04x\n",
2194                le16_to_cpu(status->scsi_status), le16_to_cpu(status->completion_status));
2195         printk("qlogicfc : state flags = 0x%04x, status flags = 0x%04x\n",
2196                le16_to_cpu(status->state_flags), le16_to_cpu(status->status_flags));
2197         printk("qlogicfc : response info length = 0x%04x, request sense length = 0x%04x\n",
2198                le16_to_cpu(status->res_info_len), le16_to_cpu(status->req_sense_len));
2199         printk("qlogicfc : residual transfer length = 0x%08x, response = 0x%02x\n", le32_to_cpu(status->residual), status->res_info[3]);
2200
2201 }
2202
2203 #endif                         /* DEBUG_ISP2x00_INTR */
2204
2205
2206 #if DEBUG_ISP2x00
2207
2208 void isp2x00_print_scsi_cmd(Scsi_Cmnd * cmd)
2209 {
2210         int i;
2211
2212         printk("qlogicfc : target = 0x%02x, lun = 0x%02x, cmd_len = 0x%02x\n",
2213                cmd->target, cmd->lun, cmd->cmd_len);
2214         printk("qlogicfc : command = ");
2215         for (i = 0; i < cmd->cmd_len; i++)
2216                 printk("0x%02x ", cmd->cmnd[i]);
2217         printk("\n");
2218 }
2219
2220 #endif                          /* DEBUG_ISP2x00 */
2221
2222 MODULE_LICENSE("GPL");
2223
2224 static Scsi_Host_Template driver_template = {
2225         .detect                 = isp2x00_detect,
2226         .release                = isp2x00_release,
2227         .info                   = isp2x00_info,
2228         .queuecommand           = isp2x00_queuecommand,
2229         .eh_abort_handler       = isp2x00_abort,
2230         .bios_param             = isp2x00_biosparam,
2231         .can_queue              = QLOGICFC_REQ_QUEUE_LEN,
2232         .this_id                = -1,
2233         .sg_tablesize           = QLOGICFC_MAX_SG(QLOGICFC_REQ_QUEUE_LEN),
2234         .cmd_per_lun            = QLOGICFC_CMD_PER_LUN,
2235         .use_clustering         = ENABLE_CLUSTERING,
2236 };
2237 #include "scsi_module.c"