sys/dev/disk/advansys/advlib.c

   1 /*
   2  * Low level routines for the Advanced Systems Inc. SCSI controllers chips
   3  *
   4  * Copyright (c) 1996-1997, 1999-2000 Justin Gibbs.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions, and the following disclaimer,
  12  *    without modification, immediately at the beginning of the file.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. The name of the author may not be used to endorse or promote products
  17  *    derived from this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  23  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  * $FreeBSD: src/sys/dev/advansys/advlib.c,v 1.15.2.1 2000/04/14 13:32:49 nyan Exp $
  32  * $DragonFly: src/sys/dev/disk/advansys/advlib.c,v 1.2 2003/06/17 04:28:21 dillon Exp $
  33  */
  34 /*
  35  * Ported from:
  36  * advansys.c - Linux Host Driver for AdvanSys SCSI Adapters
  37  *
  38  * Copyright (c) 1995-1996 Advanced System Products, Inc.
  39  * All Rights Reserved.
  40  *
  41  * Redistribution and use in source and binary forms, with or without
  42  * modification, are permitted provided that redistributions of source
  43  * code retain the above copyright notice and this comment without
  44  * modification.
  45  */
  46
  47 #include <sys/param.h>
  48 #include <sys/kernel.h>
  49 #include <sys/systm.h>
  50
  51 #include <machine/bus_pio.h>
  52 #include <machine/bus.h>
  53 #include <machine/clock.h>
  54 #include <machine/resource.h>
  55 #include <sys/bus.h>
  56 #include <sys/rman.h>
  57
  58 #include <cam/cam.h>
  59 #include <cam/cam_ccb.h>
  60 #include <cam/cam_sim.h>
  61 #include <cam/cam_xpt_sim.h>
  62
  63 #include <cam/scsi/scsi_all.h>
  64 #include <cam/scsi/scsi_message.h>
  65 #include <cam/scsi/scsi_da.h>
  66 #include <cam/scsi/scsi_cd.h>
  67
  68 #include <vm/vm.h>
  69 #include <vm/vm_param.h>
  70 #include <vm/pmap.h>
  71
  72 #include <dev/advansys/advansys.h>
  73 #include <dev/advansys/advmcode.h>
  74
  75 struct adv_quirk_entry {
  76         struct scsi_inquiry_pattern inq_pat;
  77         u_int8_t quirks;
  78 #define ADV_QUIRK_FIX_ASYN_XFER_ALWAYS  0x01
  79 #define ADV_QUIRK_FIX_ASYN_XFER         0x02
  80 };
  81
  82 static struct adv_quirk_entry adv_quirk_table[] =
  83 {
  84         {
  85                 { T_CDROM, SIP_MEDIA_REMOVABLE, "HP", "*", "*" },
  86                 ADV_QUIRK_FIX_ASYN_XFER_ALWAYS|ADV_QUIRK_FIX_ASYN_XFER
  87         },
  88         {
  89                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NEC", "CD-ROM DRIVE", "*" },
  90                 0
  91         },
  92         {
  93                 {
  94                   T_SEQUENTIAL, SIP_MEDIA_REMOVABLE,
  95                   "TANDBERG", " TDC 36", "*"
  96                 },
  97                 0
  98         },
  99         {
 100                 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", "*", "*" },
 101                 0
 102         },
 103         {
 104                 {
 105                   T_PROCESSOR, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
 106                   "*", "*", "*"
 107                 },
 108                 0
 109         },
 110         {
 111                 {
 112                   T_SCANNER, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
 113                   "*", "*", "*"
 114                 },
 115                 0
 116         },
 117         {
 118                 /* Default quirk entry */
 119                 {
 120                   T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
 121                   /*vendor*/"*", /*product*/"*", /*revision*/"*"
 122                 },
 123                 ADV_QUIRK_FIX_ASYN_XFER,
 124         }
 125 };
 126
 127 /*
 128  * Allowable periods in ns
 129  */
 130 static u_int8_t adv_sdtr_period_tbl[] =
 131 {
 132         25,
 133         30,
 134         35,
 135         40,
 136         50,
 137         60,
 138         70,
 139         85
 140 };
 141
 142 static u_int8_t adv_sdtr_period_tbl_ultra[] =
 143 {
 144         12,
 145         19,
 146         25,
 147         32,
 148         38,
 149         44,
 150         50,
 151         57,
 152         63,
 153         69,
 154         75,
 155         82,
 156         88,
 157         94,
 158         100,
 159         107
 160 };
 161
 162 struct ext_msg {
 163         u_int8_t msg_type;
 164         u_int8_t msg_len;
 165         u_int8_t msg_req;
 166         union {
 167                 struct {
 168                         u_int8_t sdtr_xfer_period;
 169                         u_int8_t sdtr_req_ack_offset;
 170                 } sdtr;
 171                 struct {
 172                         u_int8_t wdtr_width;
 173                 } wdtr;
 174                 struct {
 175                         u_int8_t mdp[4];
 176                 } mdp;
 177         } u_ext_msg;
 178         u_int8_t res;
 179 };
 180
 181 #define xfer_period     u_ext_msg.sdtr.sdtr_xfer_period
 182 #define req_ack_offset  u_ext_msg.sdtr.sdtr_req_ack_offset
 183 #define wdtr_width      u_ext_msg.wdtr.wdtr_width
 184 #define mdp_b3          u_ext_msg.mdp_b3
 185 #define mdp_b2          u_ext_msg.mdp_b2
 186 #define mdp_b1          u_ext_msg.mdp_b1
 187 #define mdp_b0          u_ext_msg.mdp_b0
 188
 189 /*
 190  * Some of the early PCI adapters have problems with
 191  * async transfers.  Instead use an offset of 1.
 192  */
 193 #define ASYN_SDTR_DATA_FIX_PCI_REV_AB 0x41
 194
 195 /* LRAM routines */
 196 static void      adv_read_lram_16_multi(struct adv_softc *adv, u_int16_t s_addr,
 197                                         u_int16_t *buffer, int count);
 198 static void      adv_write_lram_16_multi(struct adv_softc *adv,
 199                                          u_int16_t s_addr, u_int16_t *buffer,
 200                                          int count);
 201 static void      adv_mset_lram_16(struct adv_softc *adv, u_int16_t s_addr,
 202                                   u_int16_t set_value, int count);
 203 static u_int32_t adv_msum_lram_16(struct adv_softc *adv, u_int16_t s_addr,
 204                                   int count);
 205
 206 static int       adv_write_and_verify_lram_16(struct adv_softc *adv,
 207                                               u_int16_t addr, u_int16_t value);
 208 static u_int32_t adv_read_lram_32(struct adv_softc *adv, u_int16_t addr);
 209
 210
 211 static void      adv_write_lram_32(struct adv_softc *adv, u_int16_t addr,
 212                                    u_int32_t value);
 213 static void      adv_write_lram_32_multi(struct adv_softc *adv,
 214                                          u_int16_t s_addr, u_int32_t *buffer,
 215                                          int count);
 216
 217 /* EEPROM routines */
 218 static u_int16_t adv_read_eeprom_16(struct adv_softc *adv, u_int8_t addr);
 219 static u_int16_t adv_write_eeprom_16(struct adv_softc *adv, u_int8_t addr,
 220                                      u_int16_t value);
 221 static int       adv_write_eeprom_cmd_reg(struct adv_softc *adv,
 222                                           u_int8_t cmd_reg);
 223 static int       adv_set_eeprom_config_once(struct adv_softc *adv,
 224                                             struct adv_eeprom_config *eeconfig);
 225
 226 /* Initialization */
 227 static u_int32_t adv_load_microcode(struct adv_softc *adv, u_int16_t s_addr,
 228                                     u_int16_t *mcode_buf, u_int16_t mcode_size);
 229
 230 static void      adv_reinit_lram(struct adv_softc *adv);
 231 static void      adv_init_lram(struct adv_softc *adv);
 232 static int       adv_init_microcode_var(struct adv_softc *adv);
 233 static void      adv_init_qlink_var(struct adv_softc *adv);
 234
 235 /* Interrupts */
 236 static void      adv_disable_interrupt(struct adv_softc *adv);
 237 static void      adv_enable_interrupt(struct adv_softc *adv);
 238 static void      adv_toggle_irq_act(struct adv_softc *adv);
 239
 240 /* Chip Control */
 241 static int       adv_host_req_chip_halt(struct adv_softc *adv);
 242 static void      adv_set_chip_ih(struct adv_softc *adv, u_int16_t ins_code);
 243 #if UNUSED
 244 static u_int8_t  adv_get_chip_scsi_ctrl(struct adv_softc *adv);
 245 #endif
 246
 247 /* Queue handling and execution */
 248 static __inline int
 249                  adv_sgcount_to_qcount(int sgcount);
 250
 251 static __inline int
 252 adv_sgcount_to_qcount(int sgcount)
 253 {
 254         int     n_sg_list_qs;
 255
 256         n_sg_list_qs = ((sgcount - 1) / ADV_SG_LIST_PER_Q);
 257         if (((sgcount - 1) % ADV_SG_LIST_PER_Q) != 0)
 258                 n_sg_list_qs++;
 259         return (n_sg_list_qs + 1);
 260 }
 261
 262 static void      adv_get_q_info(struct adv_softc *adv, u_int16_t s_addr,
 263                                 u_int16_t *inbuf, int words);
 264 static u_int     adv_get_num_free_queues(struct adv_softc *adv, u_int8_t n_qs);
 265 static u_int8_t  adv_alloc_free_queues(struct adv_softc *adv,
 266                                        u_int8_t free_q_head, u_int8_t n_free_q);
 267 static u_int8_t  adv_alloc_free_queue(struct adv_softc *adv,
 268                                       u_int8_t free_q_head);
 269 static int       adv_send_scsi_queue(struct adv_softc *adv,
 270                                      struct adv_scsi_q *scsiq,
 271                                      u_int8_t n_q_required);
 272 static void      adv_put_ready_sg_list_queue(struct adv_softc *adv,
 273                                              struct adv_scsi_q *scsiq,
 274                                              u_int q_no);
 275 static void      adv_put_ready_queue(struct adv_softc *adv,
 276                                      struct adv_scsi_q *scsiq, u_int q_no);
 277 static void      adv_put_scsiq(struct adv_softc *adv, u_int16_t s_addr,
 278                                u_int16_t *buffer, int words);
 279
 280 /* Messages */
 281 static void      adv_handle_extmsg_in(struct adv_softc *adv,
 282                                       u_int16_t halt_q_addr, u_int8_t q_cntl,
 283                                       target_bit_vector target_id,
 284                                       int tid);
 285 static void      adv_msgout_sdtr(struct adv_softc *adv, u_int8_t sdtr_period,
 286                                  u_int8_t sdtr_offset);
 287 static void      adv_set_sdtr_reg_at_id(struct adv_softc *adv, int id,
 288                                         u_int8_t sdtr_data);
 289
 290
 291 /* Exported functions first */
 292
 293 void
 294 advasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg)
 295 {
 296         struct adv_softc *adv;
 297
 298         adv = (struct adv_softc *)callback_arg;
 299         switch (code) {
 300         case AC_FOUND_DEVICE:
 301         {
 302                 struct ccb_getdev *cgd;
 303                 target_bit_vector target_mask;
 304                 int num_entries;
 305                 caddr_t match;
 306                 struct adv_quirk_entry *entry;
 307                 struct adv_target_transinfo* tinfo;
 308
 309                 cgd = (struct ccb_getdev *)arg;
 310
 311                 target_mask = ADV_TID_TO_TARGET_MASK(cgd->ccb_h.target_id);
 312
 313                 num_entries = sizeof(adv_quirk_table)/sizeof(*adv_quirk_table);
 314                 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 315                                        (caddr_t)adv_quirk_table,
 316                                        num_entries, sizeof(*adv_quirk_table),
 317                                        scsi_inquiry_match);
 318
 319                 if (match == NULL)
 320                         panic("advasync: device didn't match wildcard entry!!");
 321
 322                 entry = (struct adv_quirk_entry *)match;
 323
 324                 if (adv->bug_fix_control & ADV_BUG_FIX_ASYN_USE_SYN) {
 325                         if ((entry->quirks & ADV_QUIRK_FIX_ASYN_XFER_ALWAYS)!=0)
 326                                 adv->fix_asyn_xfer_always |= target_mask;
 327                         else
 328                                 adv->fix_asyn_xfer_always &= ~target_mask;
 329                         /*
 330                          * We start out life with all bits set and clear them
 331                          * after we've determined that the fix isn't necessary.
 332                          * It may well be that we've already cleared a target
 333                          * before the full inquiry session completes, so don't
 334                          * gratuitously set a target bit even if it has this
 335                          * quirk.  But, if the quirk exonerates a device, clear
 336                          * the bit now.
 337                          */
 338                         if ((entry->quirks & ADV_QUIRK_FIX_ASYN_XFER) == 0)
 339                                 adv->fix_asyn_xfer &= ~target_mask;
 340                 }
 341                 /*
 342                  * Reset our sync settings now that we've determined
 343                  * what quirks are in effect for the device.
 344                  */
 345                 tinfo = &adv->tinfo[cgd->ccb_h.target_id];
 346                 adv_set_syncrate(adv, cgd->ccb_h.path,
 347                                  cgd->ccb_h.target_id,
 348                                  tinfo->current.period,
 349                                  tinfo->current.offset,
 350                                  ADV_TRANS_CUR);
 351                 break;
 352         }
 353         case AC_LOST_DEVICE:
 354         {
 355                 u_int target_mask;
 356
 357                 if (adv->bug_fix_control & ADV_BUG_FIX_ASYN_USE_SYN) {
 358                         target_mask = 0x01 << xpt_path_target_id(path);
 359                         adv->fix_asyn_xfer |= target_mask;
 360                 }
 361
 362                 /*
 363                  * Revert to async transfers
 364                  * for the next device.
 365                  */
 366                 adv_set_syncrate(adv, /*path*/NULL,
 367                                  xpt_path_target_id(path),
 368                                  /*period*/0,
 369                                  /*offset*/0,
 370                                  ADV_TRANS_GOAL|ADV_TRANS_CUR);
 371         }
 372         default:
 373                 break;
 374         }
 375 }
 376
 377 void
 378 adv_set_bank(struct adv_softc *adv, u_int8_t bank)
 379 {
 380         u_int8_t control;
 381
 382         /*
 383          * Start out with the bank reset to 0
 384          */
 385         control = ADV_INB(adv, ADV_CHIP_CTRL)
 386                   &  (~(ADV_CC_SINGLE_STEP | ADV_CC_TEST
 387                         | ADV_CC_DIAG | ADV_CC_SCSI_RESET
 388                         | ADV_CC_CHIP_RESET | ADV_CC_BANK_ONE));
 389         if (bank == 1) {
 390                 control |= ADV_CC_BANK_ONE;
 391         } else if (bank == 2) {
 392                 control |= ADV_CC_DIAG | ADV_CC_BANK_ONE;
 393         }
 394         ADV_OUTB(adv, ADV_CHIP_CTRL, control);
 395 }
 396
 397 u_int8_t
 398 adv_read_lram_8(struct adv_softc *adv, u_int16_t addr)
 399 {
 400         u_int8_t   byte_data;
 401         u_int16_t  word_data;
 402
 403         /*
 404          * LRAM is accessed on 16bit boundaries.
 405          */
 406         ADV_OUTW(adv, ADV_LRAM_ADDR, addr & 0xFFFE);
 407         word_data = ADV_INW(adv, ADV_LRAM_DATA);
 408         if (addr & 1) {
 409 #if BYTE_ORDER == BIG_ENDIAN
 410                 byte_data = (u_int8_t)(word_data & 0xFF);
 411 #else
 412                 byte_data = (u_int8_t)((word_data >> 8) & 0xFF);
 413 #endif
 414         } else {
 415 #if BYTE_ORDER == BIG_ENDIAN
 416                 byte_data = (u_int8_t)((word_data >> 8) & 0xFF);
 417 #else
 418                 byte_data = (u_int8_t)(word_data & 0xFF);
 419 #endif
 420         }
 421         return (byte_data);
 422 }
 423
 424 void
 425 adv_write_lram_8(struct adv_softc *adv, u_int16_t addr, u_int8_t value)
 426 {
 427         u_int16_t word_data;
 428
 429         word_data = adv_read_lram_16(adv, addr & 0xFFFE);
 430         if (addr & 1) {
 431                 word_data &= 0x00FF;
 432                 word_data |= (((u_int8_t)value << 8) & 0xFF00);
 433         } else {
 434                 word_data &= 0xFF00;
 435                 word_data |= ((u_int8_t)value & 0x00FF);
 436         }
 437         adv_write_lram_16(adv, addr & 0xFFFE, word_data);
 438 }
 439
 440
 441 u_int16_t
 442 adv_read_lram_16(struct adv_softc *adv, u_int16_t addr)
 443 {
 444         ADV_OUTW(adv, ADV_LRAM_ADDR, addr);
 445         return (ADV_INW(adv, ADV_LRAM_DATA));
 446 }
 447
 448 void
 449 adv_write_lram_16(struct adv_softc *adv, u_int16_t addr, u_int16_t value)
 450 {
 451         ADV_OUTW(adv, ADV_LRAM_ADDR, addr);
 452         ADV_OUTW(adv, ADV_LRAM_DATA, value);
 453 }
 454
 455 /*
 456  * Determine if there is a board at "iobase" by looking
 457  * for the AdvanSys signatures.  Return 1 if a board is
 458  * found, 0 otherwise.
 459  */
 460 int
 461 adv_find_signature(bus_space_tag_t tag, bus_space_handle_t bsh)
 462 {
 463         u_int16_t signature;
 464
 465         if (bus_space_read_1(tag, bsh, ADV_SIGNATURE_BYTE) == ADV_1000_ID1B) {
 466                 signature = bus_space_read_2(tag, bsh, ADV_SIGNATURE_WORD);
 467                 if ((signature == ADV_1000_ID0W)
 468                  || (signature == ADV_1000_ID0W_FIX))
 469                         return (1);
 470         }
 471         return (0);
 472 }
 473
 474 void
 475 adv_lib_init(struct adv_softc *adv)
 476 {
 477         if ((adv->type & ADV_ULTRA) != 0) {
 478                 adv->sdtr_period_tbl = adv_sdtr_period_tbl_ultra;
 479                 adv->sdtr_period_tbl_size = sizeof(adv_sdtr_period_tbl_ultra);
 480         } else {
 481                 adv->sdtr_period_tbl = adv_sdtr_period_tbl;
 482                 adv->sdtr_period_tbl_size = sizeof(adv_sdtr_period_tbl);
 483         }
 484 }
 485
 486 u_int16_t
 487 adv_get_eeprom_config(struct adv_softc *adv, struct
 488                       adv_eeprom_config  *eeprom_config)
 489 {
 490         u_int16_t       sum;
 491         u_int16_t       *wbuf;
 492         u_int8_t        cfg_beg;
 493         u_int8_t        cfg_end;
 494         u_int8_t        s_addr;
 495
 496         wbuf = (u_int16_t *)eeprom_config;
 497         sum = 0;
 498
 499         for (s_addr = 0; s_addr < 2; s_addr++, wbuf++) {
 500                 *wbuf = adv_read_eeprom_16(adv, s_addr);
 501                 sum += *wbuf;
 502         }
 503
 504         if (adv->type & ADV_VL) {
 505                 cfg_beg = ADV_EEPROM_CFG_BEG_VL;
 506                 cfg_end = ADV_EEPROM_MAX_ADDR_VL;
 507         } else {
 508                 cfg_beg = ADV_EEPROM_CFG_BEG;
 509                 cfg_end = ADV_EEPROM_MAX_ADDR;
 510         }
 511
 512         for (s_addr = cfg_beg; s_addr <= (cfg_end - 1); s_addr++, wbuf++) {
 513                 *wbuf = adv_read_eeprom_16(adv, s_addr);
 514                 sum += *wbuf;
 515 #if ADV_DEBUG_EEPROM
 516                 printf("Addr 0x%x: 0x%04x\n", s_addr, *wbuf);
 517 #endif
 518         }
 519         *wbuf = adv_read_eeprom_16(adv, s_addr);
 520         return (sum);
 521 }
 522
 523 int
 524 adv_set_eeprom_config(struct adv_softc *adv,
 525                       struct adv_eeprom_config *eeprom_config)
 526 {
 527         int     retry;
 528
 529         retry = 0;
 530         while (1) {
 531                 if (adv_set_eeprom_config_once(adv, eeprom_config) == 0) {
 532                         break;
 533                 }
 534                 if (++retry > ADV_EEPROM_MAX_RETRY) {
 535                         break;
 536                 }
 537         }
 538         return (retry > ADV_EEPROM_MAX_RETRY);
 539 }
 540
 541 int
 542 adv_reset_chip(struct adv_softc *adv, int reset_bus)
 543 {
 544         adv_stop_chip(adv);
 545         ADV_OUTB(adv, ADV_CHIP_CTRL, ADV_CC_CHIP_RESET | ADV_CC_HALT
 546                                      | (reset_bus ? ADV_CC_SCSI_RESET : 0));
 547         DELAY(60);
 548
 549         adv_set_chip_ih(adv, ADV_INS_RFLAG_WTM);
 550         adv_set_chip_ih(adv, ADV_INS_HALT);
 551
 552         if (reset_bus)
 553                 ADV_OUTB(adv, ADV_CHIP_CTRL, ADV_CC_CHIP_RESET | ADV_CC_HALT);
 554
 555         ADV_OUTB(adv, ADV_CHIP_CTRL, ADV_CC_HALT);
 556         if (reset_bus)
 557                 DELAY(200 * 1000);
 558
 559         ADV_OUTW(adv, ADV_CHIP_STATUS, ADV_CIW_CLR_SCSI_RESET_INT);
 560         ADV_OUTW(adv, ADV_CHIP_STATUS, 0);
 561         return (adv_is_chip_halted(adv));
 562 }
 563
 564 int
 565 adv_test_external_lram(struct adv_softc* adv)
 566 {
 567         u_int16_t       q_addr;
 568         u_int16_t       saved_value;
 569         int             success;
 570
 571         success = 0;
 572
 573         q_addr = ADV_QNO_TO_QADDR(241);
 574         saved_value = adv_read_lram_16(adv, q_addr);
 575         if (adv_write_and_verify_lram_16(adv, q_addr, 0x55AA) == 0) {
 576                 success = 1;
 577                 adv_write_lram_16(adv, q_addr, saved_value);
 578         }
 579         return (success);
 580 }
 581
 582
 583 int
 584 adv_init_lram_and_mcode(struct adv_softc *adv)
 585 {
 586         u_int32_t       retval;
 587
 588         adv_disable_interrupt(adv);
 589
 590         adv_init_lram(adv);
 591
 592         retval = adv_load_microcode(adv, 0, (u_int16_t *)adv_mcode,
 593                                     adv_mcode_size);
 594         if (retval != adv_mcode_chksum) {
 595                 printf("adv%d: Microcode download failed checksum!\n",
 596                        adv->unit);
 597                 return (1);
 598         }
 599
 600         if (adv_init_microcode_var(adv) != 0)
 601                 return (1);
 602
 603         adv_enable_interrupt(adv);
 604         return (0);
 605 }
 606
 607 u_int8_t
 608 adv_get_chip_irq(struct adv_softc *adv)
 609 {
 610         u_int16_t       cfg_lsw;
 611         u_int8_t        chip_irq;
 612
 613         cfg_lsw = ADV_INW(adv, ADV_CONFIG_LSW);
 614
 615         if ((adv->type & ADV_VL) != 0) {
 616                 chip_irq = (u_int8_t)(((cfg_lsw >> 2) & 0x07));
 617                 if ((chip_irq == 0) ||
 618                     (chip_irq == 4) ||
 619                     (chip_irq == 7)) {
 620                         return (0);
 621                 }
 622                 return (chip_irq + (ADV_MIN_IRQ_NO - 1));
 623         }
 624         chip_irq = (u_int8_t)(((cfg_lsw >> 2) & 0x03));
 625         if (chip_irq == 3)
 626                 chip_irq += 2;
 627         return (chip_irq + ADV_MIN_IRQ_NO);
 628 }
 629
 630 u_int8_t
 631 adv_set_chip_irq(struct adv_softc *adv, u_int8_t irq_no)
 632 {
 633         u_int16_t       cfg_lsw;
 634
 635         if ((adv->type & ADV_VL) != 0) {
 636                 if (irq_no != 0) {
 637                         if ((irq_no < ADV_MIN_IRQ_NO)
 638                          || (irq_no > ADV_MAX_IRQ_NO)) {
 639                                 irq_no = 0;
 640                         } else {
 641                                 irq_no -= ADV_MIN_IRQ_NO - 1;
 642                         }
 643                 }
 644                 cfg_lsw = ADV_INW(adv, ADV_CONFIG_LSW) & 0xFFE3;
 645                 cfg_lsw |= 0x0010;
 646                 ADV_OUTW(adv, ADV_CONFIG_LSW, cfg_lsw);
 647                 adv_toggle_irq_act(adv);
 648
 649                 cfg_lsw = ADV_INW(adv, ADV_CONFIG_LSW) & 0xFFE0;
 650                 cfg_lsw |= (irq_no & 0x07) << 2;
 651                 ADV_OUTW(adv, ADV_CONFIG_LSW, cfg_lsw);
 652                 adv_toggle_irq_act(adv);
 653         } else if ((adv->type & ADV_ISA) != 0) {
 654                 if (irq_no == 15)
 655                         irq_no -= 2;
 656                 irq_no -= ADV_MIN_IRQ_NO;
 657                 cfg_lsw = ADV_INW(adv, ADV_CONFIG_LSW) & 0xFFF3;
 658                 cfg_lsw |= (irq_no & 0x03) << 2;
 659                 ADV_OUTW(adv, ADV_CONFIG_LSW, cfg_lsw);
 660         }
 661         return (adv_get_chip_irq(adv));
 662 }
 663
 664 void
 665 adv_set_chip_scsiid(struct adv_softc *adv, int new_id)
 666 {
 667         u_int16_t cfg_lsw;
 668
 669         cfg_lsw = ADV_INW(adv, ADV_CONFIG_LSW);
 670         if (ADV_CONFIG_SCSIID(cfg_lsw) == new_id)
 671                 return;
 672         cfg_lsw &= ~ADV_CFG_LSW_SCSIID;
 673         cfg_lsw |= (new_id & ADV_MAX_TID) << ADV_CFG_LSW_SCSIID_SHIFT;
 674         ADV_OUTW(adv, ADV_CONFIG_LSW, cfg_lsw);
 675 }
 676
 677 int
 678 adv_execute_scsi_queue(struct adv_softc *adv, struct adv_scsi_q *scsiq,
 679                        u_int32_t datalen)
 680 {
 681         struct          adv_target_transinfo* tinfo;
 682         u_int32_t       *p_data_addr;
 683         u_int32_t       *p_data_bcount;
 684         int             disable_syn_offset_one_fix;
 685         int             retval;
 686         u_int           n_q_required;
 687         u_int32_t       addr;
 688         u_int8_t        sg_entry_cnt;
 689         u_int8_t        target_ix;
 690         u_int8_t        sg_entry_cnt_minus_one;
 691         u_int8_t        tid_no;
 692
 693         scsiq->q1.q_no = 0;
 694         retval = 1;  /* Default to error case */
 695         target_ix = scsiq->q2.target_ix;
 696         tid_no = ADV_TIX_TO_TID(target_ix);
 697         tinfo = &adv->tinfo[tid_no];
 698
 699         if (scsiq->cdbptr[0] == REQUEST_SENSE) {
 700                 /* Renegotiate if appropriate. */
 701                 adv_set_syncrate(adv, /*struct cam_path */NULL,
 702                                  tid_no, /*period*/0, /*offset*/0,
 703                                  ADV_TRANS_CUR);
 704                 if (tinfo->current.period != tinfo->goal.period) {
 705                         adv_msgout_sdtr(adv, tinfo->goal.period,
 706                                         tinfo->goal.offset);
 707                         scsiq->q1.cntl |= (QC_MSG_OUT | QC_URGENT);
 708                 }
 709         }
 710
 711         if ((scsiq->q1.cntl & QC_SG_HEAD) != 0) {
 712                 sg_entry_cnt = scsiq->sg_head->entry_cnt;
 713                 sg_entry_cnt_minus_one = sg_entry_cnt - 1;
 714
 715 #ifdef DIAGNOSTIC
 716                 if (sg_entry_cnt <= 1)
 717                         panic("adv_execute_scsi_queue: Queue "
 718                               "with QC_SG_HEAD set but %d segs.", sg_entry_cnt);
 719
 720                 if (sg_entry_cnt > ADV_MAX_SG_LIST)
 721                         panic("adv_execute_scsi_queue: "
 722                               "Queue with too many segs.");
 723
 724                 if ((adv->type & (ADV_ISA | ADV_VL | ADV_EISA)) != 0) {
 725                         int i;
 726
 727                         for (i = 0; i < sg_entry_cnt_minus_one; i++) {
 728                                 addr = scsiq->sg_head->sg_list[i].addr +
 729                                        scsiq->sg_head->sg_list[i].bytes;
 730
 731                                 if ((addr & 0x0003) != 0)
 732                                         panic("adv_execute_scsi_queue: SG "
 733                                               "with odd address or byte count");
 734                         }
 735                 }
 736 #endif
 737                 p_data_addr =
 738                     &scsiq->sg_head->sg_list[sg_entry_cnt_minus_one].addr;
 739                 p_data_bcount =
 740                     &scsiq->sg_head->sg_list[sg_entry_cnt_minus_one].bytes;
 741
 742                 n_q_required = adv_sgcount_to_qcount(sg_entry_cnt);
 743                 scsiq->sg_head->queue_cnt = n_q_required - 1;
 744         } else {
 745                 p_data_addr = &scsiq->q1.data_addr;
 746                 p_data_bcount = &scsiq->q1.data_cnt;
 747                 n_q_required = 1;
 748         }
 749
 750         disable_syn_offset_one_fix = FALSE;
 751
 752         if ((adv->fix_asyn_xfer & scsiq->q1.target_id) != 0
 753          && (adv->fix_asyn_xfer_always & scsiq->q1.target_id) == 0) {
 754
 755                 if (datalen != 0) {
 756                         if (datalen < 512) {
 757                                 disable_syn_offset_one_fix = TRUE;
 758                         } else {
 759                                 if (scsiq->cdbptr[0] == INQUIRY
 760                                  || scsiq->cdbptr[0] == REQUEST_SENSE
 761                                  || scsiq->cdbptr[0] == READ_CAPACITY
 762                                  || scsiq->cdbptr[0] == MODE_SELECT_6
 763                                  || scsiq->cdbptr[0] == MODE_SENSE_6
 764                                  || scsiq->cdbptr[0] == MODE_SENSE_10
 765                                  || scsiq->cdbptr[0] == MODE_SELECT_10
 766                                  || scsiq->cdbptr[0] == READ_TOC) {
 767                                         disable_syn_offset_one_fix = TRUE;
 768                                 }
 769                         }
 770                 }
 771         }
 772
 773         if (disable_syn_offset_one_fix) {
 774                 scsiq->q2.tag_code &=
 775                     ~(MSG_SIMPLE_Q_TAG|MSG_HEAD_OF_Q_TAG|MSG_ORDERED_Q_TAG);
 776                 scsiq->q2.tag_code |= (ADV_TAG_FLAG_DISABLE_ASYN_USE_SYN_FIX
 777                                      | ADV_TAG_FLAG_DISABLE_DISCONNECT);
 778         }
 779
 780         if ((adv->bug_fix_control & ADV_BUG_FIX_IF_NOT_DWB) != 0
 781          && (scsiq->cdbptr[0] == READ_10 || scsiq->cdbptr[0] == READ_6)) {
 782                 u_int8_t extra_bytes;
 783
 784                 addr = *p_data_addr + *p_data_bcount;
 785                 extra_bytes = addr & 0x0003;
 786                 if (extra_bytes != 0
 787                  && ((scsiq->q1.cntl & QC_SG_HEAD) != 0
 788                   || (scsiq->q1.data_cnt & 0x01FF) == 0)) {
 789                         scsiq->q2.tag_code |= ADV_TAG_FLAG_EXTRA_BYTES;
 790                         scsiq->q1.extra_bytes = extra_bytes;
 791                         *p_data_bcount -= extra_bytes;
 792                 }
 793         }
 794
 795         if ((adv_get_num_free_queues(adv, n_q_required) >= n_q_required)
 796          || ((scsiq->q1.cntl & QC_URGENT) != 0))
 797                 retval = adv_send_scsi_queue(adv, scsiq, n_q_required);
 798
 799         return (retval);
 800 }
 801
 802
 803 u_int8_t
 804 adv_copy_lram_doneq(struct adv_softc *adv, u_int16_t q_addr,
 805                     struct adv_q_done_info *scsiq, u_int32_t max_dma_count)
 806 {
 807         u_int16_t val;
 808         u_int8_t  sg_queue_cnt;
 809
 810         adv_get_q_info(adv, q_addr + ADV_SCSIQ_DONE_INFO_BEG,
 811                        (u_int16_t *)scsiq,
 812                        (sizeof(scsiq->d2) + sizeof(scsiq->d3)) / 2);
 813
 814 #if BYTE_ORDER == BIG_ENDIAN
 815         adv_adj_endian_qdone_info(scsiq);
 816 #endif
 817
 818         val = adv_read_lram_16(adv, q_addr + ADV_SCSIQ_B_STATUS);
 819         scsiq->q_status = val & 0xFF;
 820         scsiq->q_no = (val >> 8) & 0XFF;
 821
 822         val = adv_read_lram_16(adv, q_addr + ADV_SCSIQ_B_CNTL);
 823         scsiq->cntl = val & 0xFF;
 824         sg_queue_cnt = (val >> 8) & 0xFF;
 825
 826         val = adv_read_lram_16(adv,q_addr + ADV_SCSIQ_B_SENSE_LEN);
 827         scsiq->sense_len = val & 0xFF;
 828         scsiq->extra_bytes = (val >> 8) & 0xFF;
 829
 830         /*
 831          * Due to a bug in accessing LRAM on the 940UA, the residual
 832          * is split into separate high and low 16bit quantities.
 833          */
 834         scsiq->remain_bytes =
 835             adv_read_lram_16(adv, q_addr + ADV_SCSIQ_DW_REMAIN_XFER_CNT);
 836         scsiq->remain_bytes |=
 837             adv_read_lram_16(adv, q_addr + ADV_SCSIQ_W_ALT_DC1) << 16;
 838
 839         /*
 840          * XXX Is this just a safeguard or will the counter really
 841          * have bogus upper bits?
 842          */
 843         scsiq->remain_bytes &= max_dma_count;
 844
 845         return (sg_queue_cnt);
 846 }
 847
 848 int
 849 adv_start_chip(struct adv_softc *adv)
 850 {
 851         ADV_OUTB(adv, ADV_CHIP_CTRL, 0);
 852         if ((ADV_INW(adv, ADV_CHIP_STATUS) & ADV_CSW_HALTED) != 0)
 853                 return (0);
 854         return (1);
 855 }
 856
 857 int
 858 adv_stop_execution(struct adv_softc *adv)
 859 {
 860         int count;
 861
 862         count = 0;
 863         if (adv_read_lram_8(adv, ADV_STOP_CODE_B) == 0) {
 864                 adv_write_lram_8(adv, ADV_STOP_CODE_B,
 865                                  ADV_STOP_REQ_RISC_STOP);
 866                 do {
 867                         if (adv_read_lram_8(adv, ADV_STOP_CODE_B) &
 868                                 ADV_STOP_ACK_RISC_STOP) {
 869                                 return (1);
 870                         }
 871                         DELAY(1000);
 872                 } while (count++ < 20);
 873         }
 874         return (0);
 875 }
 876
 877 int
 878 adv_is_chip_halted(struct adv_softc *adv)
 879 {
 880         if ((ADV_INW(adv, ADV_CHIP_STATUS) & ADV_CSW_HALTED) != 0) {
 881                 if ((ADV_INB(adv, ADV_CHIP_CTRL) & ADV_CC_HALT) != 0) {
 882                         return (1);
 883                 }
 884         }
 885         return (0);
 886 }
 887
 888 /*
 889  * XXX The numeric constants and the loops in this routine
 890  * need to be documented.
 891  */
 892 void
 893 adv_ack_interrupt(struct adv_softc *adv)
 894 {
 895         u_int8_t        host_flag;
 896         u_int8_t        risc_flag;
 897         int             loop;
 898
 899         loop = 0;
 900         do {
 901                 risc_flag = adv_read_lram_8(adv, ADVV_RISC_FLAG_B);
 902                 if (loop++ > 0x7FFF) {
 903                         break;
 904                 }
 905         } while ((risc_flag & ADV_RISC_FLAG_GEN_INT) != 0);
 906
 907         host_flag = adv_read_lram_8(adv, ADVV_HOST_FLAG_B);
 908         adv_write_lram_8(adv, ADVV_HOST_FLAG_B,
 909                          host_flag | ADV_HOST_FLAG_ACK_INT);
 910
 911         ADV_OUTW(adv, ADV_CHIP_STATUS, ADV_CIW_INT_ACK);
 912         loop = 0;
 913         while (ADV_INW(adv, ADV_CHIP_STATUS) & ADV_CSW_INT_PENDING) {
 914                 ADV_OUTW(adv, ADV_CHIP_STATUS, ADV_CIW_INT_ACK);
 915                 if (loop++ > 3) {
 916                         break;
 917                 }
 918         }
 919
 920         adv_write_lram_8(adv, ADVV_HOST_FLAG_B, host_flag);
 921 }
 922
 923 /*
 924  * Handle all conditions that may halt the chip waiting
 925  * for us to intervene.
 926  */
 927 void
 928 adv_isr_chip_halted(struct adv_softc *adv)
 929 {
 930         u_int16_t         int_halt_code;
 931         u_int16_t         halt_q_addr;
 932         target_bit_vector target_mask;
 933         target_bit_vector scsi_busy;
 934         u_int8_t          halt_qp;
 935         u_int8_t          target_ix;
 936         u_int8_t          q_cntl;
 937         u_int8_t          tid_no;
 938
 939         int_halt_code = adv_read_lram_16(adv, ADVV_HALTCODE_W);
 940         halt_qp = adv_read_lram_8(adv, ADVV_CURCDB_B);
 941         halt_q_addr = ADV_QNO_TO_QADDR(halt_qp);
 942         target_ix = adv_read_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_TARGET_IX);
 943         q_cntl = adv_read_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_CNTL);
 944         tid_no = ADV_TIX_TO_TID(target_ix);
 945         target_mask = ADV_TID_TO_TARGET_MASK(tid_no);
 946         if (int_halt_code == ADV_HALT_DISABLE_ASYN_USE_SYN_FIX) {
 947                 /*
 948                  * Temporarily disable the async fix by removing
 949                  * this target from the list of affected targets,
 950                  * setting our async rate, and then putting us
 951                  * back into the mask.
 952                  */
 953                 adv->fix_asyn_xfer &= ~target_mask;
 954                 adv_set_syncrate(adv, /*struct cam_path */NULL,
 955                                  tid_no, /*period*/0, /*offset*/0,
 956                                  ADV_TRANS_ACTIVE);
 957                 adv->fix_asyn_xfer |= target_mask;
 958         } else if (int_halt_code == ADV_HALT_ENABLE_ASYN_USE_SYN_FIX) {
 959                 adv_set_syncrate(adv, /*struct cam_path */NULL,
 960                                  tid_no, /*period*/0, /*offset*/0,
 961                                  ADV_TRANS_ACTIVE);
 962         } else if (int_halt_code == ADV_HALT_EXTMSG_IN) {
 963                 adv_handle_extmsg_in(adv, halt_q_addr, q_cntl,
 964                                      target_mask, tid_no);
 965         } else if (int_halt_code == ADV_HALT_CHK_CONDITION) {
 966                 struct    adv_target_transinfo* tinfo;
 967                 union     ccb *ccb;
 968                 u_int32_t cinfo_index;
 969                 u_int8_t  tag_code;
 970                 u_int8_t  q_status;
 971
 972                 tinfo = &adv->tinfo[tid_no];
 973                 q_cntl |= QC_REQ_SENSE;
 974
 975                 /* Renegotiate if appropriate. */
 976                 adv_set_syncrate(adv, /*struct cam_path */NULL,
 977                                  tid_no, /*period*/0, /*offset*/0,
 978                                  ADV_TRANS_CUR);
 979                 if (tinfo->current.period != tinfo->goal.period) {
 980                         adv_msgout_sdtr(adv, tinfo->goal.period,
 981                                         tinfo->goal.offset);
 982                         q_cntl |= QC_MSG_OUT;
 983                 }
 984                 adv_write_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_CNTL, q_cntl);
 985
 986                 /* Don't tag request sense commands */
 987                 tag_code = adv_read_lram_8(adv,
 988                                            halt_q_addr + ADV_SCSIQ_B_TAG_CODE);
 989                 tag_code &=
 990                     ~(MSG_SIMPLE_Q_TAG|MSG_HEAD_OF_Q_TAG|MSG_ORDERED_Q_TAG);
 991
 992                 if ((adv->fix_asyn_xfer & target_mask) != 0
 993                  && (adv->fix_asyn_xfer_always & target_mask) == 0) {
 994                         tag_code |= (ADV_TAG_FLAG_DISABLE_DISCONNECT
 995                                  | ADV_TAG_FLAG_DISABLE_ASYN_USE_SYN_FIX);
 996                 }
 997                 adv_write_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_TAG_CODE,
 998                                  tag_code);
 999                 q_status = adv_read_lram_8(adv,
1000                                            halt_q_addr + ADV_SCSIQ_B_STATUS);
1001                 q_status |= (QS_READY | QS_BUSY);
1002                 adv_write_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_STATUS,
1003                                  q_status);
1004                 /*
1005                  * Freeze the devq until we can handle the sense condition.
1006                  */
1007                 cinfo_index =
1008                     adv_read_lram_32(adv, halt_q_addr + ADV_SCSIQ_D_CINFO_IDX);
1009                 ccb = adv->ccb_infos[cinfo_index].ccb;
1010                 xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
1011                 ccb->ccb_h.status |= CAM_DEV_QFRZN;
1012                 adv_abort_ccb(adv, tid_no, ADV_TIX_TO_LUN(target_ix),
1013                               /*ccb*/NULL, CAM_REQUEUE_REQ,
1014                               /*queued_only*/TRUE);
1015                 scsi_busy = adv_read_lram_8(adv, ADVV_SCSIBUSY_B);
1016                 scsi_busy &= ~target_mask;
1017                 adv_write_lram_8(adv, ADVV_SCSIBUSY_B, scsi_busy);
1018                 /*
1019                  * Ensure we have enough time to actually
1020                  * retrieve the sense.
1021                  */
1022                 untimeout(adv_timeout, (caddr_t)ccb, ccb->ccb_h.timeout_ch);
1023                 ccb->ccb_h.timeout_ch =
1024                     timeout(adv_timeout, (caddr_t)ccb, 5 * hz);
1025         } else if (int_halt_code == ADV_HALT_SDTR_REJECTED) {
1026                 struct  ext_msg out_msg;
1027
1028                 adv_read_lram_16_multi(adv, ADVV_MSGOUT_BEG,
1029                                        (u_int16_t *) &out_msg,
1030                                        sizeof(out_msg)/2);
1031
1032                 if ((out_msg.msg_type == MSG_EXTENDED)
1033                  && (out_msg.msg_len == MSG_EXT_SDTR_LEN)
1034                  && (out_msg.msg_req == MSG_EXT_SDTR)) {
1035
1036                         /* Revert to Async */
1037                         adv_set_syncrate(adv, /*struct cam_path */NULL,
1038                                          tid_no, /*period*/0, /*offset*/0,
1039                                          ADV_TRANS_GOAL|ADV_TRANS_ACTIVE);
1040                 }
1041                 q_cntl &= ~QC_MSG_OUT;
1042                 adv_write_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_CNTL, q_cntl);
1043         } else if (int_halt_code == ADV_HALT_SS_QUEUE_FULL) {
1044                 u_int8_t scsi_status;
1045                 union ccb *ccb;
1046                 u_int32_t cinfo_index;
1047
1048                 scsi_status = adv_read_lram_8(adv, halt_q_addr
1049                                               + ADV_SCSIQ_SCSI_STATUS);
1050                 cinfo_index =
1051                     adv_read_lram_32(adv, halt_q_addr + ADV_SCSIQ_D_CINFO_IDX);
1052                 ccb = adv->ccb_infos[cinfo_index].ccb;
1053                 xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
1054                 ccb->ccb_h.status |= CAM_DEV_QFRZN|CAM_SCSI_STATUS_ERROR;
1055                 ccb->csio.scsi_status = SCSI_STATUS_QUEUE_FULL;
1056                 adv_abort_ccb(adv, tid_no, ADV_TIX_TO_LUN(target_ix),
1057                               /*ccb*/NULL, CAM_REQUEUE_REQ,
1058                               /*queued_only*/TRUE);
1059                 scsi_busy = adv_read_lram_8(adv, ADVV_SCSIBUSY_B);
1060                 scsi_busy &= ~target_mask;
1061                 adv_write_lram_8(adv, ADVV_SCSIBUSY_B, scsi_busy);
1062         } else {
1063                 printf("Unhandled Halt Code %x\n", int_halt_code);
1064         }
1065         adv_write_lram_16(adv, ADVV_HALTCODE_W, 0);
1066 }
1067
1068 void
1069 adv_sdtr_to_period_offset(struct adv_softc *adv,
1070                           u_int8_t sync_data, u_int8_t *period,
1071                           u_int8_t *offset, int tid)
1072 {
1073         if (adv->fix_asyn_xfer & ADV_TID_TO_TARGET_MASK(tid)
1074          && (sync_data == ASYN_SDTR_DATA_FIX_PCI_REV_AB)) {
1075                 *period = *offset = 0;
1076         } else {
1077                 *period = adv->sdtr_period_tbl[((sync_data >> 4) & 0xF)];
1078                 *offset = sync_data & 0xF;
1079         }
1080 }
1081
1082 void
1083 adv_set_syncrate(struct adv_softc *adv, struct cam_path *path,
1084                  u_int tid, u_int period, u_int offset, u_int type)
1085 {
1086         struct adv_target_transinfo* tinfo;
1087         u_int old_period;
1088         u_int old_offset;
1089         u_int8_t sdtr_data;
1090
1091         tinfo = &adv->tinfo[tid];
1092
1093         /* Filter our input */
1094         sdtr_data = adv_period_offset_to_sdtr(adv, &period,
1095                                               &offset, tid);
1096
1097         old_period = tinfo->current.period;
1098         old_offset = tinfo->current.offset;
1099
1100         if ((type & ADV_TRANS_CUR) != 0
1101          && ((old_period != period || old_offset != offset)
1102           || period == 0 || offset == 0) /*Changes in asyn fix settings*/) {
1103                 int s;
1104                 int halted;
1105
1106                 s = splcam();
1107                 halted = adv_is_chip_halted(adv);
1108                 if (halted == 0)
1109                         /* Must halt the chip first */
1110                         adv_host_req_chip_halt(adv);
1111
1112                 /* Update current hardware settings */
1113                 adv_set_sdtr_reg_at_id(adv, tid, sdtr_data);
1114
1115                 /*
1116                  * If a target can run in sync mode, we don't need
1117                  * to check it for sync problems.
1118                  */
1119                 if (offset != 0)
1120                         adv->fix_asyn_xfer &= ~ADV_TID_TO_TARGET_MASK(tid);
1121
1122                 if (halted == 0)
1123                         /* Start the chip again */
1124                         adv_start_chip(adv);
1125
1126                 splx(s);
1127                 tinfo->current.period = period;
1128                 tinfo->current.offset = offset;
1129
1130                 if (path != NULL) {
1131                         /*
1132                          * Tell the SCSI layer about the
1133                          * new transfer parameters.
1134                          */
1135                         struct  ccb_trans_settings neg;
1136
1137                         neg.sync_period = period;
1138                         neg.sync_offset = offset;
1139                         neg.valid = CCB_TRANS_SYNC_RATE_VALID
1140                                   | CCB_TRANS_SYNC_OFFSET_VALID;
1141                         xpt_setup_ccb(&neg.ccb_h, path, /*priority*/1);
1142                         xpt_async(AC_TRANSFER_NEG, path, &neg);
1143                 }
1144         }
1145
1146         if ((type & ADV_TRANS_GOAL) != 0) {
1147                 tinfo->goal.period = period;
1148                 tinfo->goal.offset = offset;
1149         }
1150
1151         if ((type & ADV_TRANS_USER) != 0) {
1152                 tinfo->user.period = period;
1153                 tinfo->user.offset = offset;
1154         }
1155 }
1156
1157 u_int8_t
1158 adv_period_offset_to_sdtr(struct adv_softc *adv, u_int *period,
1159                           u_int *offset, int tid)
1160 {
1161         u_int i;
1162         u_int dummy_offset;
1163         u_int dummy_period;
1164
1165         if (offset == NULL) {
1166                 dummy_offset = 0;
1167                 offset = &dummy_offset;
1168         }
1169
1170         if (period == NULL) {
1171                 dummy_period = 0;
1172                 period = &dummy_period;
1173         }
1174
1175 #define MIN(a,b) (((a) < (b)) ? (a) : (b))
1176
1177         *offset = MIN(ADV_SYN_MAX_OFFSET, *offset);
1178         if (*period != 0 && *offset != 0) {
1179                 for (i = 0; i < adv->sdtr_period_tbl_size; i++) {
1180                         if (*period <= adv->sdtr_period_tbl[i]) {
1181                                 /*
1182                                  * When responding to a target that requests
1183                                  * sync, the requested  rate may fall between
1184                                  * two rates that we can output, but still be
1185                                  * a rate that we can receive.  Because of this,
1186                                  * we want to respond to the target with
1187                                  * the same rate that it sent to us even
1188                                  * if the period we use to send data to it
1189                                  * is lower.  Only lower the response period
1190                                  * if we must.
1191                                  */
1192                                 if (i == 0 /* Our maximum rate */)
1193                                         *period = adv->sdtr_period_tbl[0];
1194                                 return ((i << 4) | *offset);
1195                         }
1196                 }
1197         }
1198
1199         /* Must go async */
1200         *period = 0;
1201         *offset = 0;
1202         if (adv->fix_asyn_xfer & ADV_TID_TO_TARGET_MASK(tid))
1203                 return (ASYN_SDTR_DATA_FIX_PCI_REV_AB);
1204         return (0);
1205 }
1206
1207 /* Internal Routines */
1208
1209 static void
1210 adv_read_lram_16_multi(struct adv_softc *adv, u_int16_t s_addr,
1211                        u_int16_t *buffer, int count)
1212 {
1213         ADV_OUTW(adv, ADV_LRAM_ADDR, s_addr);
1214         ADV_INSW(adv, ADV_LRAM_DATA, buffer, count);
1215 }
1216
1217 static void
1218 adv_write_lram_16_multi(struct adv_softc *adv, u_int16_t s_addr,
1219                         u_int16_t *buffer, int count)
1220 {
1221         ADV_OUTW(adv, ADV_LRAM_ADDR, s_addr);
1222         ADV_OUTSW(adv, ADV_LRAM_DATA, buffer, count);
1223 }
1224
1225 static void
1226 adv_mset_lram_16(struct adv_softc *adv, u_int16_t s_addr,
1227                  u_int16_t set_value, int count)
1228 {
1229         ADV_OUTW(adv, ADV_LRAM_ADDR, s_addr);
1230         bus_space_set_multi_2(adv->tag, adv->bsh, ADV_LRAM_DATA,
1231                               set_value, count);
1232 }
1233
1234 static u_int32_t
1235 adv_msum_lram_16(struct adv_softc *adv, u_int16_t s_addr, int count)
1236 {
1237         u_int32_t       sum;
1238         int             i;
1239
1240         sum = 0;
1241         ADV_OUTW(adv, ADV_LRAM_ADDR, s_addr);
1242         for (i = 0; i < count; i++)
1243                 sum += ADV_INW(adv, ADV_LRAM_DATA);
1244         return (sum);
1245 }
1246
1247 static int
1248 adv_write_and_verify_lram_16(struct adv_softc *adv, u_int16_t addr,
1249                              u_int16_t value)
1250 {
1251         int     retval;
1252
1253         retval = 0;
1254         ADV_OUTW(adv, ADV_LRAM_ADDR, addr);
1255         ADV_OUTW(adv, ADV_LRAM_DATA, value);
1256         DELAY(10000);
1257         ADV_OUTW(adv, ADV_LRAM_ADDR, addr);
1258         if (value != ADV_INW(adv, ADV_LRAM_DATA))
1259                 retval = 1;
1260         return (retval);
1261 }
1262
1263 static u_int32_t
1264 adv_read_lram_32(struct adv_softc *adv, u_int16_t addr)
1265 {
1266         u_int16_t           val_low, val_high;
1267
1268         ADV_OUTW(adv, ADV_LRAM_ADDR, addr);
1269
1270 #if BYTE_ORDER == BIG_ENDIAN
1271         val_high = ADV_INW(adv, ADV_LRAM_DATA);
1272         val_low = ADV_INW(adv, ADV_LRAM_DATA);
1273 #else
1274         val_low = ADV_INW(adv, ADV_LRAM_DATA);
1275         val_high = ADV_INW(adv, ADV_LRAM_DATA);
1276 #endif
1277
1278         return (((u_int32_t)val_high << 16) | (u_int32_t)val_low);
1279 }
1280
1281 static void
1282 adv_write_lram_32(struct adv_softc *adv, u_int16_t addr, u_int32_t value)
1283 {
1284         ADV_OUTW(adv, ADV_LRAM_ADDR, addr);
1285
1286 #if BYTE_ORDER == BIG_ENDIAN
1287         ADV_OUTW(adv, ADV_LRAM_DATA, (u_int16_t)((value >> 16) & 0xFFFF));
1288         ADV_OUTW(adv, ADV_LRAM_DATA, (u_int16_t)(value & 0xFFFF));
1289 #else
1290         ADV_OUTW(adv, ADV_LRAM_DATA, (u_int16_t)(value & 0xFFFF));
1291         ADV_OUTW(adv, ADV_LRAM_DATA, (u_int16_t)((value >> 16) & 0xFFFF));
1292 #endif
1293 }
1294
1295 static void
1296 adv_write_lram_32_multi(struct adv_softc *adv, u_int16_t s_addr,
1297                         u_int32_t *buffer, int count)
1298 {
1299         ADV_OUTW(adv, ADV_LRAM_ADDR, s_addr);
1300         ADV_OUTSW(adv, ADV_LRAM_DATA, (u_int16_t *)buffer, count * 2);
1301 }
1302
1303 static u_int16_t
1304 adv_read_eeprom_16(struct adv_softc *adv, u_int8_t addr)
1305 {
1306         u_int16_t read_wval;
1307         u_int8_t  cmd_reg;
1308
1309         adv_write_eeprom_cmd_reg(adv, ADV_EEPROM_CMD_WRITE_DISABLE);
1310         DELAY(1000);
1311         cmd_reg = addr | ADV_EEPROM_CMD_READ;
1312         adv_write_eeprom_cmd_reg(adv, cmd_reg);
1313         DELAY(1000);
1314         read_wval = ADV_INW(adv, ADV_EEPROM_DATA);
1315         DELAY(1000);
1316         return (read_wval);
1317 }
1318
1319 static u_int16_t
1320 adv_write_eeprom_16(struct adv_softc *adv, u_int8_t addr, u_int16_t value)
1321 {
1322         u_int16_t       read_value;
1323
1324         read_value = adv_read_eeprom_16(adv, addr);
1325         if (read_value != value) {
1326                 adv_write_eeprom_cmd_reg(adv, ADV_EEPROM_CMD_WRITE_ENABLE);
1327                 DELAY(1000);
1328
1329                 ADV_OUTW(adv, ADV_EEPROM_DATA, value);
1330                 DELAY(1000);
1331
1332                 adv_write_eeprom_cmd_reg(adv, ADV_EEPROM_CMD_WRITE | addr);
1333                 DELAY(20 * 1000);
1334
1335                 adv_write_eeprom_cmd_reg(adv, ADV_EEPROM_CMD_WRITE_DISABLE);
1336                 DELAY(1000);
1337                 read_value = adv_read_eeprom_16(adv, addr);
1338         }
1339         return (read_value);
1340 }
1341
1342 static int
1343 adv_write_eeprom_cmd_reg(struct adv_softc *adv, u_int8_t cmd_reg)
1344 {
1345         u_int8_t read_back;
1346         int      retry;
1347
1348         retry = 0;
1349         while (1) {
1350                 ADV_OUTB(adv, ADV_EEPROM_CMD, cmd_reg);
1351                 DELAY(1000);
1352                 read_back = ADV_INB(adv, ADV_EEPROM_CMD);
1353                 if (read_back == cmd_reg) {
1354                         return (1);
1355                 }
1356                 if (retry++ > ADV_EEPROM_MAX_RETRY) {
1357                         return (0);
1358                 }
1359         }
1360 }
1361
1362 static int
1363 adv_set_eeprom_config_once(struct adv_softc *adv,
1364                            struct adv_eeprom_config *eeprom_config)
1365 {
1366         int             n_error;
1367         u_int16_t       *wbuf;
1368         u_int16_t       sum;
1369         u_int8_t        s_addr;
1370         u_int8_t        cfg_beg;
1371         u_int8_t        cfg_end;
1372
1373         wbuf = (u_int16_t *)eeprom_config;
1374         n_error = 0;
1375         sum = 0;
1376         for (s_addr = 0; s_addr < 2; s_addr++, wbuf++) {
1377                 sum += *wbuf;
1378                 if (*wbuf != adv_write_eeprom_16(adv, s_addr, *wbuf)) {
1379                         n_error++;
1380                 }
1381         }
1382         if (adv->type & ADV_VL) {
1383                 cfg_beg = ADV_EEPROM_CFG_BEG_VL;
1384                 cfg_end = ADV_EEPROM_MAX_ADDR_VL;
1385         } else {
1386                 cfg_beg = ADV_EEPROM_CFG_BEG;
1387                 cfg_end = ADV_EEPROM_MAX_ADDR;
1388         }
1389
1390         for (s_addr = cfg_beg; s_addr <= (cfg_end - 1); s_addr++, wbuf++) {
1391                 sum += *wbuf;
1392                 if (*wbuf != adv_write_eeprom_16(adv, s_addr, *wbuf)) {
1393                         n_error++;
1394                 }
1395         }
1396         *wbuf = sum;
1397         if (sum != adv_write_eeprom_16(adv, s_addr, sum)) {
1398                 n_error++;
1399         }
1400         wbuf = (u_int16_t *)eeprom_config;
1401         for (s_addr = 0; s_addr < 2; s_addr++, wbuf++) {
1402                 if (*wbuf != adv_read_eeprom_16(adv, s_addr)) {
1403                         n_error++;
1404                 }
1405         }
1406         for (s_addr = cfg_beg; s_addr <= cfg_end; s_addr++, wbuf++) {
1407                 if (*wbuf != adv_read_eeprom_16(adv, s_addr)) {
1408                         n_error++;
1409                 }
1410         }
1411         return (n_error);
1412 }
1413
1414 static u_int32_t
1415 adv_load_microcode(struct adv_softc *adv, u_int16_t s_addr,
1416                    u_int16_t *mcode_buf, u_int16_t mcode_size)
1417 {
1418         u_int32_t chksum;
1419         u_int16_t mcode_lram_size;
1420         u_int16_t mcode_chksum;
1421
1422         mcode_lram_size = mcode_size >> 1;
1423         /* XXX Why zero the memory just before you write the whole thing?? */
1424         adv_mset_lram_16(adv, s_addr, 0, mcode_lram_size);
1425         adv_write_lram_16_multi(adv, s_addr, mcode_buf, mcode_lram_size);
1426
1427         chksum = adv_msum_lram_16(adv, s_addr, mcode_lram_size);
1428         mcode_chksum = (u_int16_t)adv_msum_lram_16(adv, ADV_CODE_SEC_BEG,
1429                                                    ((mcode_size - s_addr
1430                                                      - ADV_CODE_SEC_BEG) >> 1));
1431         adv_write_lram_16(adv, ADVV_MCODE_CHKSUM_W, mcode_chksum);
1432         adv_write_lram_16(adv, ADVV_MCODE_SIZE_W, mcode_size);
1433         return (chksum);
1434 }
1435
1436 static void
1437 adv_reinit_lram(struct adv_softc *adv) {
1438         adv_init_lram(adv);
1439         adv_init_qlink_var(adv);
1440 }
1441
1442 static void
1443 adv_init_lram(struct adv_softc *adv)
1444 {
1445         u_int8_t  i;
1446         u_int16_t s_addr;
1447
1448         adv_mset_lram_16(adv, ADV_QADR_BEG, 0,
1449                          (((adv->max_openings + 2 + 1) * 64) >> 1));
1450
1451         i = ADV_MIN_ACTIVE_QNO;
1452         s_addr = ADV_QADR_BEG + ADV_QBLK_SIZE;
1453
1454         adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_FWD, i + 1);
1455         adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_BWD, adv->max_openings);
1456         adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_QNO, i);
1457         i++;
1458         s_addr += ADV_QBLK_SIZE;
1459         for (; i < adv->max_openings; i++, s_addr += ADV_QBLK_SIZE) {
1460                 adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_FWD, i + 1);
1461                 adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_BWD, i - 1);
1462                 adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_QNO, i);
1463         }
1464
1465         adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_FWD, ADV_QLINK_END);
1466         adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_BWD, adv->max_openings - 1);
1467         adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_QNO, adv->max_openings);
1468         i++;
1469         s_addr += ADV_QBLK_SIZE;
1470
1471         for (; i <= adv->max_openings + 3; i++, s_addr += ADV_QBLK_SIZE) {
1472                 adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_FWD, i);
1473                 adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_BWD, i);
1474                 adv_write_lram_8(adv, s_addr + ADV_SCSIQ_B_QNO, i);
1475         }
1476 }
1477
1478 static int
1479 adv_init_microcode_var(struct adv_softc *adv)
1480 {
1481         int      i;
1482
1483         for (i = 0; i <= ADV_MAX_TID; i++) {
1484
1485                 /* Start out async all around */
1486                 adv_set_syncrate(adv, /*path*/NULL,
1487                                  i, 0, 0,
1488                                  ADV_TRANS_GOAL|ADV_TRANS_CUR);
1489         }
1490
1491         adv_init_qlink_var(adv);
1492
1493         adv_write_lram_8(adv, ADVV_DISC_ENABLE_B, adv->disc_enable);
1494         adv_write_lram_8(adv, ADVV_HOSTSCSI_ID_B, 0x01 << adv->scsi_id);
1495
1496         adv_write_lram_32(adv, ADVV_OVERRUN_PADDR_D, adv->overrun_physbase);
1497
1498         adv_write_lram_32(adv, ADVV_OVERRUN_BSIZE_D, ADV_OVERRUN_BSIZE);
1499
1500         ADV_OUTW(adv, ADV_REG_PROG_COUNTER, ADV_MCODE_START_ADDR);
1501         if (ADV_INW(adv, ADV_REG_PROG_COUNTER) != ADV_MCODE_START_ADDR) {
1502                 printf("adv%d: Unable to set program counter. Aborting.\n",
1503                        adv->unit);
1504                 return (1);
1505         }
1506         return (0);
1507 }
1508
1509 static void
1510 adv_init_qlink_var(struct adv_softc *adv)
1511 {
1512         int       i;
1513         u_int16_t lram_addr;
1514
1515         adv_write_lram_8(adv, ADVV_NEXTRDY_B, 1);
1516         adv_write_lram_8(adv, ADVV_DONENEXT_B, adv->max_openings);
1517
1518         adv_write_lram_16(adv, ADVV_FREE_Q_HEAD_W, 1);
1519         adv_write_lram_16(adv, ADVV_DONE_Q_TAIL_W, adv->max_openings);
1520
1521         adv_write_lram_8(adv, ADVV_BUSY_QHEAD_B,
1522                          (u_int8_t)((int) adv->max_openings + 1));
1523         adv_write_lram_8(adv, ADVV_DISC1_QHEAD_B,
1524                          (u_int8_t)((int) adv->max_openings + 2));
1525
1526         adv_write_lram_8(adv, ADVV_TOTAL_READY_Q_B, adv->max_openings);
1527
1528         adv_write_lram_16(adv, ADVV_ASCDVC_ERR_CODE_W, 0);
1529         adv_write_lram_16(adv, ADVV_HALTCODE_W, 0);
1530         adv_write_lram_8(adv, ADVV_STOP_CODE_B, 0);
1531         adv_write_lram_8(adv, ADVV_SCSIBUSY_B, 0);
1532         adv_write_lram_8(adv, ADVV_WTM_FLAG_B, 0);
1533         adv_write_lram_8(adv, ADVV_Q_DONE_IN_PROGRESS_B, 0);
1534
1535         lram_addr = ADV_QADR_BEG;
1536         for (i = 0; i < 32; i++, lram_addr += 2)
1537                 adv_write_lram_16(adv, lram_addr, 0);
1538 }
1539
1540 static void
1541 adv_disable_interrupt(struct adv_softc *adv)
1542 {
1543         u_int16_t cfg;
1544
1545         cfg = ADV_INW(adv, ADV_CONFIG_LSW);
1546         ADV_OUTW(adv, ADV_CONFIG_LSW, cfg & ~ADV_CFG_LSW_HOST_INT_ON);
1547 }
1548
1549 static void
1550 adv_enable_interrupt(struct adv_softc *adv)
1551 {
1552         u_int16_t cfg;
1553
1554         cfg = ADV_INW(adv, ADV_CONFIG_LSW);
1555         ADV_OUTW(adv, ADV_CONFIG_LSW, cfg | ADV_CFG_LSW_HOST_INT_ON);
1556 }
1557
1558 static void
1559 adv_toggle_irq_act(struct adv_softc *adv)
1560 {
1561         ADV_OUTW(adv, ADV_CHIP_STATUS, ADV_CIW_IRQ_ACT);
1562         ADV_OUTW(adv, ADV_CHIP_STATUS, 0);
1563 }
1564
1565 void
1566 adv_start_execution(struct adv_softc *adv)
1567 {
1568         if (adv_read_lram_8(adv, ADV_STOP_CODE_B) != 0) {
1569                 adv_write_lram_8(adv, ADV_STOP_CODE_B, 0);
1570         }
1571 }
1572
1573 int
1574 adv_stop_chip(struct adv_softc *adv)
1575 {
1576         u_int8_t cc_val;
1577
1578         cc_val = ADV_INB(adv, ADV_CHIP_CTRL)
1579                  & (~(ADV_CC_SINGLE_STEP | ADV_CC_TEST | ADV_CC_DIAG));
1580         ADV_OUTB(adv, ADV_CHIP_CTRL, cc_val | ADV_CC_HALT);
1581         adv_set_chip_ih(adv, ADV_INS_HALT);
1582         adv_set_chip_ih(adv, ADV_INS_RFLAG_WTM);
1583         if ((ADV_INW(adv, ADV_CHIP_STATUS) & ADV_CSW_HALTED) == 0) {
1584                 return (0);
1585         }
1586         return (1);
1587 }
1588
1589 static int
1590 adv_host_req_chip_halt(struct adv_softc *adv)
1591 {
1592         int      count;
1593         u_int8_t saved_stop_code;
1594
1595         if (adv_is_chip_halted(adv))
1596                 return (1);
1597
1598         count = 0;
1599         saved_stop_code = adv_read_lram_8(adv, ADVV_STOP_CODE_B);
1600         adv_write_lram_8(adv, ADVV_STOP_CODE_B,
1601                          ADV_STOP_HOST_REQ_RISC_HALT | ADV_STOP_REQ_RISC_STOP);
1602         while (adv_is_chip_halted(adv) == 0
1603             && count++ < 2000)
1604                 ;
1605
1606         adv_write_lram_8(adv, ADVV_STOP_CODE_B, saved_stop_code);
1607         return (count < 2000);
1608 }
1609
1610 static void
1611 adv_set_chip_ih(struct adv_softc *adv, u_int16_t ins_code)
1612 {
1613         adv_set_bank(adv, 1);
1614         ADV_OUTW(adv, ADV_REG_IH, ins_code);
1615         adv_set_bank(adv, 0);
1616 }
1617
1618 #if UNUSED
1619 static u_int8_t
1620 adv_get_chip_scsi_ctrl(struct adv_softc *adv)
1621 {
1622         u_int8_t scsi_ctrl;
1623
1624         adv_set_bank(adv, 1);
1625         scsi_ctrl = ADV_INB(adv, ADV_REG_SC);
1626         adv_set_bank(adv, 0);
1627         return (scsi_ctrl);
1628 }
1629 #endif
1630
1631 /*
1632  * XXX Looks like more padding issues in this routine as well.
1633  *     There has to be a way to turn this into an insw.
1634  */
1635 static void
1636 adv_get_q_info(struct adv_softc *adv, u_int16_t s_addr,
1637                u_int16_t *inbuf, int words)
1638 {
1639         int     i;
1640
1641         ADV_OUTW(adv, ADV_LRAM_ADDR, s_addr);
1642         for (i = 0; i < words; i++, inbuf++) {
1643                 if (i == 5) {
1644                         continue;
1645                 }
1646                 *inbuf = ADV_INW(adv, ADV_LRAM_DATA);
1647         }
1648 }
1649
1650 static u_int
1651 adv_get_num_free_queues(struct adv_softc *adv, u_int8_t n_qs)
1652 {
1653         u_int     cur_used_qs;
1654         u_int     cur_free_qs;
1655
1656         cur_used_qs = adv->cur_active + ADV_MIN_FREE_Q;
1657
1658         if ((cur_used_qs + n_qs) <= adv->max_openings) {
1659                 cur_free_qs = adv->max_openings - cur_used_qs;
1660                 return (cur_free_qs);
1661         }
1662         adv->openings_needed = n_qs;
1663         return (0);
1664 }
1665
1666 static u_int8_t
1667 adv_alloc_free_queues(struct adv_softc *adv, u_int8_t free_q_head,
1668                       u_int8_t n_free_q)
1669 {
1670         int i;
1671
1672         for (i = 0; i < n_free_q; i++) {
1673                 free_q_head = adv_alloc_free_queue(adv, free_q_head);
1674                 if (free_q_head == ADV_QLINK_END)
1675                         break;
1676         }
1677         return (free_q_head);
1678 }
1679
1680 static u_int8_t
1681 adv_alloc_free_queue(struct adv_softc *adv, u_int8_t free_q_head)
1682 {
1683         u_int16_t       q_addr;
1684         u_int8_t        next_qp;
1685         u_int8_t        q_status;
1686
1687         next_qp = ADV_QLINK_END;
1688         q_addr = ADV_QNO_TO_QADDR(free_q_head);
1689         q_status = adv_read_lram_8(adv, q_addr + ADV_SCSIQ_B_STATUS);
1690
1691         if ((q_status & QS_READY) == 0)
1692                 next_qp = adv_read_lram_8(adv, q_addr + ADV_SCSIQ_B_FWD);
1693
1694         return (next_qp);
1695 }
1696
1697 static int
1698 adv_send_scsi_queue(struct adv_softc *adv, struct adv_scsi_q *scsiq,
1699                     u_int8_t n_q_required)
1700 {
1701         u_int8_t        free_q_head;
1702         u_int8_t        next_qp;
1703         u_int8_t        tid_no;
1704         u_int8_t        target_ix;
1705         int             retval;
1706
1707         retval = 1;
1708         target_ix = scsiq->q2.target_ix;
1709         tid_no = ADV_TIX_TO_TID(target_ix);
1710         free_q_head = adv_read_lram_16(adv, ADVV_FREE_Q_HEAD_W) & 0xFF;
1711         if ((next_qp = adv_alloc_free_queues(adv, free_q_head, n_q_required))
1712             != ADV_QLINK_END) {
1713                 scsiq->q1.q_no = free_q_head;
1714
1715                 /*
1716                  * Now that we know our Q number, point our sense
1717                  * buffer pointer to a bus dma mapped area where
1718                  * we can dma the data to.
1719                  */
1720                 scsiq->q1.sense_addr = adv->sense_physbase
1721                     + ((free_q_head - 1) * sizeof(struct scsi_sense_data));
1722                 adv_put_ready_sg_list_queue(adv, scsiq, free_q_head);
1723                 adv_write_lram_16(adv, ADVV_FREE_Q_HEAD_W, next_qp);
1724                 adv->cur_active += n_q_required;
1725                 retval = 0;
1726         }
1727         return (retval);
1728 }
1729
1730
1731 static void
1732 adv_put_ready_sg_list_queue(struct adv_softc *adv, struct adv_scsi_q *scsiq,
1733                             u_int q_no)
1734 {
1735         u_int8_t        sg_list_dwords;
1736         u_int8_t        sg_index, i;
1737         u_int8_t        sg_entry_cnt;
1738         u_int8_t        next_qp;
1739         u_int16_t       q_addr;
1740         struct          adv_sg_head *sg_head;
1741         struct          adv_sg_list_q scsi_sg_q;
1742
1743         sg_head = scsiq->sg_head;
1744
1745         if (sg_head) {
1746                 sg_entry_cnt = sg_head->entry_cnt - 1;
1747 #ifdef DIAGNOSTIC
1748                 if (sg_entry_cnt == 0)
1749                         panic("adv_put_ready_sg_list_queue: ScsiQ with "
1750                               "a SG list but only one element");
1751                 if ((scsiq->q1.cntl & QC_SG_HEAD) == 0)
1752                         panic("adv_put_ready_sg_list_queue: ScsiQ with "
1753                               "a SG list but QC_SG_HEAD not set");
1754 #endif
1755                 q_addr = ADV_QNO_TO_QADDR(q_no);
1756                 sg_index = 1;
1757                 scsiq->q1.sg_queue_cnt = sg_head->queue_cnt;
1758                 scsi_sg_q.sg_head_qp = q_no;
1759                 scsi_sg_q.cntl = QCSG_SG_XFER_LIST;
1760                 for (i = 0; i < sg_head->queue_cnt; i++) {
1761                         u_int8_t segs_this_q;
1762
1763                         if (sg_entry_cnt > ADV_SG_LIST_PER_Q)
1764                                 segs_this_q = ADV_SG_LIST_PER_Q;
1765                         else {
1766                                 /* This will be the last segment then */
1767                                 segs_this_q = sg_entry_cnt;
1768                                 scsi_sg_q.cntl |= QCSG_SG_XFER_END;
1769                         }
1770                         scsi_sg_q.seq_no = i + 1;
1771                         sg_list_dwords = segs_this_q << 1;
1772                         if (i == 0) {
1773                                 scsi_sg_q.sg_list_cnt = segs_this_q;
1774                                 scsi_sg_q.sg_cur_list_cnt = segs_this_q;
1775                         } else {
1776                                 scsi_sg_q.sg_list_cnt = segs_this_q - 1;
1777                                 scsi_sg_q.sg_cur_list_cnt = segs_this_q - 1;
1778                         }
1779                         next_qp = adv_read_lram_8(adv, q_addr + ADV_SCSIQ_B_FWD);
1780                         scsi_sg_q.q_no = next_qp;
1781                         q_addr = ADV_QNO_TO_QADDR(next_qp);
1782
1783                         adv_write_lram_16_multi(adv,
1784                                                 q_addr + ADV_SCSIQ_SGHD_CPY_BEG,
1785                                                 (u_int16_t *)&scsi_sg_q,
1786                                                 sizeof(scsi_sg_q) >> 1);
1787                         adv_write_lram_32_multi(adv, q_addr + ADV_SGQ_LIST_BEG,
1788                                                 (u_int32_t *)&sg_head->sg_list[sg_index],
1789                                                 sg_list_dwords);
1790                         sg_entry_cnt -= segs_this_q;
1791                         sg_index += ADV_SG_LIST_PER_Q;
1792                 }
1793         }
1794         adv_put_ready_queue(adv, scsiq, q_no);
1795 }
1796
1797 static void
1798 adv_put_ready_queue(struct adv_softc *adv, struct adv_scsi_q *scsiq,
1799                     u_int q_no)
1800 {
1801         struct          adv_target_transinfo* tinfo;
1802         u_int           q_addr;
1803         u_int           tid_no;
1804
1805         tid_no = ADV_TIX_TO_TID(scsiq->q2.target_ix);
1806         tinfo = &adv->tinfo[tid_no];
1807         if ((tinfo->current.period != tinfo->goal.period)
1808          || (tinfo->current.offset != tinfo->goal.offset)) {
1809
1810                 adv_msgout_sdtr(adv, tinfo->goal.period, tinfo->goal.offset);
1811                 scsiq->q1.cntl |= QC_MSG_OUT;
1812         }
1813         q_addr = ADV_QNO_TO_QADDR(q_no);
1814
1815         scsiq->q1.status = QS_FREE;
1816
1817         adv_write_lram_16_multi(adv, q_addr + ADV_SCSIQ_CDB_BEG,
1818                                 (u_int16_t *)scsiq->cdbptr,
1819                                 scsiq->q2.cdb_len >> 1);
1820
1821 #if BYTE_ORDER == BIG_ENDIAN
1822         adv_adj_scsiq_endian(scsiq);
1823 #endif
1824
1825         adv_put_scsiq(adv, q_addr + ADV_SCSIQ_CPY_BEG,
1826                       (u_int16_t *) &scsiq->q1.cntl,
1827                       ((sizeof(scsiq->q1) + sizeof(scsiq->q2)) / 2) - 1);
1828
1829 #if CC_WRITE_IO_COUNT
1830         adv_write_lram_16(adv, q_addr + ADV_SCSIQ_W_REQ_COUNT,
1831                           adv->req_count);
1832 #endif
1833
1834 #if CC_CLEAR_DMA_REMAIN
1835
1836         adv_write_lram_32(adv, q_addr + ADV_SCSIQ_DW_REMAIN_XFER_ADDR, 0);
1837         adv_write_lram_32(adv, q_addr + ADV_SCSIQ_DW_REMAIN_XFER_CNT, 0);
1838 #endif
1839
1840         adv_write_lram_16(adv, q_addr + ADV_SCSIQ_B_STATUS,
1841                           (scsiq->q1.q_no << 8) | QS_READY);
1842 }
1843
1844 static void
1845 adv_put_scsiq(struct adv_softc *adv, u_int16_t s_addr,
1846               u_int16_t *buffer, int words)
1847 {
1848         int     i;
1849
1850         /*
1851          * XXX This routine makes *gross* assumptions
1852          * about padding in the data structures.
1853          * Either the data structures should have explicit
1854          * padding members added, or they should have padding
1855          * turned off via compiler attributes depending on
1856          * which yields better overall performance.  My hunch
1857          * would be that turning off padding would be the
1858          * faster approach as an outsw is much faster than
1859          * this crude loop and accessing un-aligned data
1860          * members isn't *that* expensive.  The other choice
1861          * would be to modify the ASC script so that the
1862          * the adv_scsiq_1 structure can be re-arranged so
1863          * padding isn't required.
1864          */
1865         ADV_OUTW(adv, ADV_LRAM_ADDR, s_addr);
1866         for (i = 0; i < words; i++, buffer++) {
1867                 if (i == 2 || i == 10) {
1868                         continue;
1869                 }
1870                 ADV_OUTW(adv, ADV_LRAM_DATA, *buffer);
1871         }
1872 }
1873
1874 static void
1875 adv_handle_extmsg_in(struct adv_softc *adv, u_int16_t halt_q_addr,
1876                      u_int8_t q_cntl, target_bit_vector target_mask,
1877                      int tid_no)
1878 {
1879         struct  ext_msg ext_msg;
1880
1881         adv_read_lram_16_multi(adv, ADVV_MSGIN_BEG, (u_int16_t *) &ext_msg,
1882                                sizeof(ext_msg) >> 1);
1883         if ((ext_msg.msg_type == MSG_EXTENDED)
1884          && (ext_msg.msg_req == MSG_EXT_SDTR)
1885          && (ext_msg.msg_len == MSG_EXT_SDTR_LEN)) {
1886                 union     ccb *ccb;
1887                 struct    adv_target_transinfo* tinfo;
1888                 u_int32_t cinfo_index;
1889                 u_int    period;
1890                 u_int    offset;
1891                 int      sdtr_accept;
1892                 u_int8_t orig_offset;
1893
1894                 cinfo_index =
1895                     adv_read_lram_32(adv, halt_q_addr + ADV_SCSIQ_D_CINFO_IDX);
1896                 ccb = adv->ccb_infos[cinfo_index].ccb;
1897                 tinfo = &adv->tinfo[tid_no];
1898                 sdtr_accept = TRUE;
1899
1900                 orig_offset = ext_msg.req_ack_offset;
1901                 if (ext_msg.xfer_period < tinfo->goal.period) {
1902                         sdtr_accept = FALSE;
1903                         ext_msg.xfer_period = tinfo->goal.period;
1904                 }
1905
1906                 /* Perform range checking */
1907                 period = ext_msg.xfer_period;
1908                 offset = ext_msg.req_ack_offset;
1909                 adv_period_offset_to_sdtr(adv, &period,  &offset, tid_no);
1910                 ext_msg.xfer_period = period;
1911                 ext_msg.req_ack_offset = offset;
1912
1913                 /* Record our current sync settings */
1914                 adv_set_syncrate(adv, ccb->ccb_h.path,
1915                                  tid_no, ext_msg.xfer_period,
1916                                  ext_msg.req_ack_offset,
1917                                  ADV_TRANS_GOAL|ADV_TRANS_ACTIVE);
1918
1919                 /* Offset too high or large period forced async */
1920                 if (orig_offset != ext_msg.req_ack_offset)
1921                         sdtr_accept = FALSE;
1922
1923                 if (sdtr_accept && (q_cntl & QC_MSG_OUT)) {
1924                         /* Valid response to our requested negotiation */
1925                         q_cntl &= ~QC_MSG_OUT;
1926                 } else {
1927                         /* Must Respond */
1928                         q_cntl |= QC_MSG_OUT;
1929                         adv_msgout_sdtr(adv, ext_msg.xfer_period,
1930                                         ext_msg.req_ack_offset);
1931                 }
1932
1933         } else if (ext_msg.msg_type == MSG_EXTENDED
1934                 && ext_msg.msg_req == MSG_EXT_WDTR
1935                 && ext_msg.msg_len == MSG_EXT_WDTR_LEN) {
1936
1937                 ext_msg.wdtr_width = 0;
1938                 adv_write_lram_16_multi(adv, ADVV_MSGOUT_BEG,
1939                                         (u_int16_t *)&ext_msg,
1940                                         sizeof(ext_msg) >> 1);
1941                 q_cntl |= QC_MSG_OUT;
1942         } else {
1943
1944                 ext_msg.msg_type = MSG_MESSAGE_REJECT;
1945                 adv_write_lram_16_multi(adv, ADVV_MSGOUT_BEG,
1946                                         (u_int16_t *)&ext_msg,
1947                                         sizeof(ext_msg) >> 1);
1948                 q_cntl |= QC_MSG_OUT;
1949         }
1950         adv_write_lram_8(adv, halt_q_addr + ADV_SCSIQ_B_CNTL, q_cntl);
1951 }
1952
1953 static void
1954 adv_msgout_sdtr(struct adv_softc *adv, u_int8_t sdtr_period,
1955                 u_int8_t sdtr_offset)
1956 {
1957         struct   ext_msg sdtr_buf;
1958
1959         sdtr_buf.msg_type = MSG_EXTENDED;
1960         sdtr_buf.msg_len = MSG_EXT_SDTR_LEN;
1961         sdtr_buf.msg_req = MSG_EXT_SDTR;
1962         sdtr_buf.xfer_period = sdtr_period;
1963         sdtr_offset &= ADV_SYN_MAX_OFFSET;
1964         sdtr_buf.req_ack_offset = sdtr_offset;
1965         adv_write_lram_16_multi(adv, ADVV_MSGOUT_BEG,
1966                                 (u_int16_t *) &sdtr_buf,
1967                                 sizeof(sdtr_buf) / 2);
1968 }
1969
1970 int
1971 adv_abort_ccb(struct adv_softc *adv, int target, int lun, union ccb *ccb,
1972               u_int32_t status, int queued_only)
1973 {
1974         u_int16_t q_addr;
1975         u_int8_t  q_no;
1976         struct adv_q_done_info scsiq_buf;
1977         struct adv_q_done_info *scsiq;
1978         u_int8_t  target_ix;
1979         int       count;
1980
1981         scsiq = &scsiq_buf;
1982         target_ix = ADV_TIDLUN_TO_IX(target, lun);
1983         count = 0;
1984         for (q_no = ADV_MIN_ACTIVE_QNO; q_no <= adv->max_openings; q_no++) {
1985                 struct adv_ccb_info *ccb_info;
1986                 q_addr = ADV_QNO_TO_QADDR(q_no);
1987
1988                 adv_copy_lram_doneq(adv, q_addr, scsiq, adv->max_dma_count);
1989                 ccb_info = &adv->ccb_infos[scsiq->d2.ccb_index];
1990                 if (((scsiq->q_status & QS_READY) != 0)
1991                  && ((scsiq->q_status & QS_ABORTED) == 0)
1992                  && ((scsiq->cntl & QCSG_SG_XFER_LIST) == 0)
1993                  && (scsiq->d2.target_ix == target_ix)
1994                  && (queued_only == 0
1995                   || !(scsiq->q_status & (QS_DISC1|QS_DISC2|QS_BUSY|QS_DONE)))
1996                  && (ccb == NULL || (ccb == ccb_info->ccb))) {
1997                         union ccb *aborted_ccb;
1998                         struct adv_ccb_info *cinfo;
1999
2000                         scsiq->q_status |= QS_ABORTED;
2001                         adv_write_lram_8(adv, q_addr + ADV_SCSIQ_B_STATUS,
2002                                          scsiq->q_status);
2003                         aborted_ccb = ccb_info->ccb;
2004                         /* Don't clobber earlier error codes */
2005                         if ((aborted_ccb->ccb_h.status & CAM_STATUS_MASK)
2006                           == CAM_REQ_INPROG)
2007                                 aborted_ccb->ccb_h.status |= status;
2008                         cinfo = (struct adv_ccb_info *)
2009                             aborted_ccb->ccb_h.ccb_cinfo_ptr;
2010                         cinfo->state |= ACCB_ABORT_QUEUED;
2011                         count++;
2012                 }
2013         }
2014         return (count);
2015 }
2016
2017 int
2018 adv_reset_bus(struct adv_softc *adv, int initiate_bus_reset)
2019 {
2020         int count;
2021         int i;
2022         union ccb *ccb;
2023
2024         i = 200;
2025         while ((ADV_INW(adv, ADV_CHIP_STATUS) & ADV_CSW_SCSI_RESET_ACTIVE) != 0
2026             && i--)
2027                 DELAY(1000);
2028         adv_reset_chip(adv, initiate_bus_reset);
2029         adv_reinit_lram(adv);
2030         for (i = 0; i <= ADV_MAX_TID; i++)
2031                 adv_set_syncrate(adv, NULL, i, /*period*/0,
2032                                  /*offset*/0, ADV_TRANS_CUR);
2033         ADV_OUTW(adv, ADV_REG_PROG_COUNTER, ADV_MCODE_START_ADDR);
2034
2035         /* Tell the XPT layer that a bus reset occured */
2036         if (adv->path != NULL)
2037                 xpt_async(AC_BUS_RESET, adv->path, NULL);
2038
2039         count = 0;
2040         while ((ccb = (union ccb *)LIST_FIRST(&adv->pending_ccbs)) != NULL) {
2041                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INPROG)
2042                         ccb->ccb_h.status |= CAM_SCSI_BUS_RESET;
2043                 adv_done(adv, ccb, QD_ABORTED_BY_HOST, 0, 0, 0);
2044                 count++;
2045         }
2046
2047         adv_start_chip(adv);
2048         return (count);
2049 }
2050
2051 static void
2052 adv_set_sdtr_reg_at_id(struct adv_softc *adv, int tid, u_int8_t sdtr_data)
2053 {
2054         int orig_id;
2055
2056         adv_set_bank(adv, 1);
2057         orig_id = ffs(ADV_INB(adv, ADV_HOST_SCSIID)) - 1;
2058         ADV_OUTB(adv, ADV_HOST_SCSIID, tid);
2059         if (ADV_INB(adv, ADV_HOST_SCSIID) == (0x01 << tid)) {
2060                 adv_set_bank(adv, 0);
2061                 ADV_OUTB(adv, ADV_SYN_OFFSET, sdtr_data);
2062         }
2063         adv_set_bank(adv, 1);
2064         ADV_OUTB(adv, ADV_HOST_SCSIID, orig_id);
2065         adv_set_bank(adv, 0);
2066 }