linux/drivers/scsi/aic7xxx/aic79xx_pci.c
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   1/*
   2 * Product specific probe and attach routines for:
   3 *      aic7901 and aic7902 SCSI controllers
   4 *
   5 * Copyright (c) 1994-2001 Justin T. Gibbs.
   6 * Copyright (c) 2000-2002 Adaptec Inc.
   7 * All rights reserved.
   8 *
   9 * Redistribution and use in source and binary forms, with or without
  10 * modification, are permitted provided that the following conditions
  11 * are met:
  12 * 1. Redistributions of source code must retain the above copyright
  13 *    notice, this list of conditions, and the following disclaimer,
  14 *    without modification.
  15 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  16 *    substantially similar to the "NO WARRANTY" disclaimer below
  17 *    ("Disclaimer") and any redistribution must be conditioned upon
  18 *    including a substantially similar Disclaimer requirement for further
  19 *    binary redistribution.
  20 * 3. Neither the names of the above-listed copyright holders nor the names
  21 *    of any contributors may be used to endorse or promote products derived
  22 *    from this software without specific prior written permission.
  23 *
  24 * Alternatively, this software may be distributed under the terms of the
  25 * GNU General Public License ("GPL") version 2 as published by the Free
  26 * Software Foundation.
  27 *
  28 * NO WARRANTY
  29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  33 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  37 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  38 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  39 * POSSIBILITY OF SUCH DAMAGES.
  40 *
  41 * $Id: //depot/aic7xxx/aic7xxx/aic79xx_pci.c#92 $
  42 */
  43
  44#ifdef __linux__
  45#include "aic79xx_osm.h"
  46#include "aic79xx_inline.h"
  47#else
  48#include <dev/aic7xxx/aic79xx_osm.h>
  49#include <dev/aic7xxx/aic79xx_inline.h>
  50#endif
  51
  52#include "aic79xx_pci.h"
  53
  54static __inline uint64_t
  55ahd_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
  56{
  57        uint64_t id;
  58
  59        id = subvendor
  60           | (subdevice << 16)
  61           | ((uint64_t)vendor << 32)
  62           | ((uint64_t)device << 48);
  63
  64        return (id);
  65}
  66
  67#define ID_AIC7902_PCI_REV_A4           0x3
  68#define ID_AIC7902_PCI_REV_B0           0x10
  69#define SUBID_HP                        0x0E11
  70
  71#define DEVID_9005_HOSTRAID(id) ((id) & 0x80)
  72
  73#define DEVID_9005_TYPE(id) ((id) & 0xF)
  74#define         DEVID_9005_TYPE_HBA             0x0     /* Standard Card */
  75#define         DEVID_9005_TYPE_HBA_2EXT        0x1     /* 2 External Ports */
  76#define         DEVID_9005_TYPE_IROC            0x8     /* Raid(0,1,10) Card */
  77#define         DEVID_9005_TYPE_MB              0xF     /* On Motherboard */
  78
  79#define DEVID_9005_MFUNC(id) ((id) & 0x10)
  80
  81#define DEVID_9005_PACKETIZED(id) ((id) & 0x8000)
  82
  83#define SUBID_9005_TYPE(id) ((id) & 0xF)
  84#define         SUBID_9005_TYPE_HBA             0x0     /* Standard Card */
  85#define         SUBID_9005_TYPE_MB              0xF     /* On Motherboard */
  86
  87#define SUBID_9005_AUTOTERM(id) (((id) & 0x10) == 0)
  88
  89#define SUBID_9005_LEGACYCONN_FUNC(id) ((id) & 0x20)
  90
  91#define SUBID_9005_SEEPTYPE(id) (((id) & 0x0C0) >> 6)
  92#define         SUBID_9005_SEEPTYPE_NONE        0x0
  93#define         SUBID_9005_SEEPTYPE_4K          0x1
  94
  95static ahd_device_setup_t ahd_aic7901_setup;
  96static ahd_device_setup_t ahd_aic7901A_setup;
  97static ahd_device_setup_t ahd_aic7902_setup;
  98static ahd_device_setup_t ahd_aic790X_setup;
  99
 100static struct ahd_pci_identity ahd_pci_ident_table [] =
 101{
 102        /* aic7901 based controllers */
 103        {
 104                ID_AHA_29320A,
 105                ID_ALL_MASK,
 106                "Adaptec 29320A Ultra320 SCSI adapter",
 107                ahd_aic7901_setup
 108        },
 109        {
 110                ID_AHA_29320ALP,
 111                ID_ALL_MASK,
 112                "Adaptec 29320ALP PCIx Ultra320 SCSI adapter",
 113                ahd_aic7901_setup
 114        },
 115        {
 116                ID_AHA_29320LPE,
 117                ID_ALL_MASK,
 118                "Adaptec 29320LPE PCIe Ultra320 SCSI adapter",
 119                ahd_aic7901_setup
 120        },
 121        /* aic7901A based controllers */
 122        {
 123                ID_AHA_29320LP,
 124                ID_ALL_MASK,
 125                "Adaptec 29320LP Ultra320 SCSI adapter",
 126                ahd_aic7901A_setup
 127        },
 128        /* aic7902 based controllers */ 
 129        {
 130                ID_AHA_29320,
 131                ID_ALL_MASK,
 132                "Adaptec 29320 Ultra320 SCSI adapter",
 133                ahd_aic7902_setup
 134        },
 135        {
 136                ID_AHA_29320B,
 137                ID_ALL_MASK,
 138                "Adaptec 29320B Ultra320 SCSI adapter",
 139                ahd_aic7902_setup
 140        },
 141        {
 142                ID_AHA_39320,
 143                ID_ALL_MASK,
 144                "Adaptec 39320 Ultra320 SCSI adapter",
 145                ahd_aic7902_setup
 146        },
 147        {
 148                ID_AHA_39320_B,
 149                ID_ALL_MASK,
 150                "Adaptec 39320 Ultra320 SCSI adapter",
 151                ahd_aic7902_setup
 152        },
 153        {
 154                ID_AHA_39320_B_DELL,
 155                ID_ALL_MASK,
 156                "Adaptec (Dell OEM) 39320 Ultra320 SCSI adapter",
 157                ahd_aic7902_setup
 158        },
 159        {
 160                ID_AHA_39320A,
 161                ID_ALL_MASK,
 162                "Adaptec 39320A Ultra320 SCSI adapter",
 163                ahd_aic7902_setup
 164        },
 165        {
 166                ID_AHA_39320D,
 167                ID_ALL_MASK,
 168                "Adaptec 39320D Ultra320 SCSI adapter",
 169                ahd_aic7902_setup
 170        },
 171        {
 172                ID_AHA_39320D_HP,
 173                ID_ALL_MASK,
 174                "Adaptec (HP OEM) 39320D Ultra320 SCSI adapter",
 175                ahd_aic7902_setup
 176        },
 177        {
 178                ID_AHA_39320D_B,
 179                ID_ALL_MASK,
 180                "Adaptec 39320D Ultra320 SCSI adapter",
 181                ahd_aic7902_setup
 182        },
 183        {
 184                ID_AHA_39320D_B_HP,
 185                ID_ALL_MASK,
 186                "Adaptec (HP OEM) 39320D Ultra320 SCSI adapter",
 187                ahd_aic7902_setup
 188        },
 189        /* Generic chip probes for devices we don't know 'exactly' */
 190        {
 191                ID_AIC7901 & ID_9005_GENERIC_MASK,
 192                ID_9005_GENERIC_MASK,
 193                "Adaptec AIC7901 Ultra320 SCSI adapter",
 194                ahd_aic7901_setup
 195        },
 196        {
 197                ID_AIC7901A & ID_DEV_VENDOR_MASK,
 198                ID_DEV_VENDOR_MASK,
 199                "Adaptec AIC7901A Ultra320 SCSI adapter",
 200                ahd_aic7901A_setup
 201        },
 202        {
 203                ID_AIC7902 & ID_9005_GENERIC_MASK,
 204                ID_9005_GENERIC_MASK,
 205                "Adaptec AIC7902 Ultra320 SCSI adapter",
 206                ahd_aic7902_setup
 207        }
 208};
 209
 210static const u_int ahd_num_pci_devs = ARRAY_SIZE(ahd_pci_ident_table);
 211                
 212#define DEVCONFIG               0x40
 213#define         PCIXINITPAT     0x0000E000ul
 214#define                 PCIXINIT_PCI33_66       0x0000E000ul
 215#define                 PCIXINIT_PCIX50_66      0x0000C000ul
 216#define                 PCIXINIT_PCIX66_100     0x0000A000ul
 217#define                 PCIXINIT_PCIX100_133    0x00008000ul
 218#define PCI_BUS_MODES_INDEX(devconfig)  \
 219        (((devconfig) & PCIXINITPAT) >> 13)
 220static const char *pci_bus_modes[] =
 221{
 222        "PCI bus mode unknown",
 223        "PCI bus mode unknown",
 224        "PCI bus mode unknown",
 225        "PCI bus mode unknown",
 226        "PCI-X 101-133Mhz",
 227        "PCI-X 67-100Mhz",
 228        "PCI-X 50-66Mhz",
 229        "PCI 33 or 66Mhz"
 230};
 231
 232#define         TESTMODE        0x00000800ul
 233#define         IRDY_RST        0x00000200ul
 234#define         FRAME_RST       0x00000100ul
 235#define         PCI64BIT        0x00000080ul
 236#define         MRDCEN          0x00000040ul
 237#define         ENDIANSEL       0x00000020ul
 238#define         MIXQWENDIANEN   0x00000008ul
 239#define         DACEN           0x00000004ul
 240#define         STPWLEVEL       0x00000002ul
 241#define         QWENDIANSEL     0x00000001ul
 242
 243#define DEVCONFIG1              0x44
 244#define         PREQDIS         0x01
 245
 246#define CSIZE_LATTIME           0x0c
 247#define         CACHESIZE       0x000000fful
 248#define         LATTIME         0x0000ff00ul
 249
 250static int      ahd_check_extport(struct ahd_softc *ahd);
 251static void     ahd_configure_termination(struct ahd_softc *ahd,
 252                                          u_int adapter_control);
 253static void     ahd_pci_split_intr(struct ahd_softc *ahd, u_int intstat);
 254static void     ahd_pci_intr(struct ahd_softc *ahd);
 255
 256struct ahd_pci_identity *
 257ahd_find_pci_device(ahd_dev_softc_t pci)
 258{
 259        uint64_t  full_id;
 260        uint16_t  device;
 261        uint16_t  vendor;
 262        uint16_t  subdevice;
 263        uint16_t  subvendor;
 264        struct    ahd_pci_identity *entry;
 265        u_int     i;
 266
 267        vendor = ahd_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
 268        device = ahd_pci_read_config(pci, PCIR_DEVICE, /*bytes*/2);
 269        subvendor = ahd_pci_read_config(pci, PCIR_SUBVEND_0, /*bytes*/2);
 270        subdevice = ahd_pci_read_config(pci, PCIR_SUBDEV_0, /*bytes*/2);
 271        full_id = ahd_compose_id(device,
 272                                 vendor,
 273                                 subdevice,
 274                                 subvendor);
 275
 276        /*
 277         * Controllers, mask out the IROC/HostRAID bit
 278         */
 279        
 280        full_id &= ID_ALL_IROC_MASK;
 281
 282        for (i = 0; i < ahd_num_pci_devs; i++) {
 283                entry = &ahd_pci_ident_table[i];
 284                if (entry->full_id == (full_id & entry->id_mask)) {
 285                        /* Honor exclusion entries. */
 286                        if (entry->name == NULL)
 287                                return (NULL);
 288                        return (entry);
 289                }
 290        }
 291        return (NULL);
 292}
 293
 294int
 295ahd_pci_config(struct ahd_softc *ahd, struct ahd_pci_identity *entry)
 296{
 297        struct scb_data *shared_scb_data;
 298        u_int            command;
 299        uint32_t         devconfig;
 300        uint16_t         subvendor; 
 301        int              error;
 302
 303        shared_scb_data = NULL;
 304        ahd->description = entry->name;
 305        /*
 306         * Record if this is an HP board.
 307         */
 308        subvendor = ahd_pci_read_config(ahd->dev_softc,
 309                                        PCIR_SUBVEND_0, /*bytes*/2);
 310        if (subvendor == SUBID_HP)
 311                ahd->flags |= AHD_HP_BOARD;
 312
 313        error = entry->setup(ahd);
 314        if (error != 0)
 315                return (error);
 316        
 317        devconfig = ahd_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4);
 318        if ((devconfig & PCIXINITPAT) == PCIXINIT_PCI33_66) {
 319                ahd->chip |= AHD_PCI;
 320                /* Disable PCIX workarounds when running in PCI mode. */
 321                ahd->bugs &= ~AHD_PCIX_BUG_MASK;
 322        } else {
 323                ahd->chip |= AHD_PCIX;
 324        }
 325        ahd->bus_description = pci_bus_modes[PCI_BUS_MODES_INDEX(devconfig)];
 326
 327        ahd_power_state_change(ahd, AHD_POWER_STATE_D0);
 328
 329        error = ahd_pci_map_registers(ahd);
 330        if (error != 0)
 331                return (error);
 332
 333        /*
 334         * If we need to support high memory, enable dual
 335         * address cycles.  This bit must be set to enable
 336         * high address bit generation even if we are on a
 337         * 64bit bus (PCI64BIT set in devconfig).
 338         */
 339        if ((ahd->flags & (AHD_39BIT_ADDRESSING|AHD_64BIT_ADDRESSING)) != 0) {
 340                uint32_t devconfig;
 341
 342                if (bootverbose)
 343                        printf("%s: Enabling 39Bit Addressing\n",
 344                               ahd_name(ahd));
 345                devconfig = ahd_pci_read_config(ahd->dev_softc,
 346                                                DEVCONFIG, /*bytes*/4);
 347                devconfig |= DACEN;
 348                ahd_pci_write_config(ahd->dev_softc, DEVCONFIG,
 349                                     devconfig, /*bytes*/4);
 350        }
 351        
 352        /* Ensure busmastering is enabled */
 353        command = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/2);
 354        command |= PCIM_CMD_BUSMASTEREN;
 355        ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, command, /*bytes*/2);
 356
 357        error = ahd_softc_init(ahd);
 358        if (error != 0)
 359                return (error);
 360
 361        ahd->bus_intr = ahd_pci_intr;
 362
 363        error = ahd_reset(ahd, /*reinit*/FALSE);
 364        if (error != 0)
 365                return (ENXIO);
 366
 367        ahd->pci_cachesize =
 368            ahd_pci_read_config(ahd->dev_softc, CSIZE_LATTIME,
 369                                /*bytes*/1) & CACHESIZE;
 370        ahd->pci_cachesize *= 4;
 371
 372        ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
 373        /* See if we have a SEEPROM and perform auto-term */
 374        error = ahd_check_extport(ahd);
 375        if (error != 0)
 376                return (error);
 377
 378        /* Core initialization */
 379        error = ahd_init(ahd);
 380        if (error != 0)
 381                return (error);
 382
 383        /*
 384         * Allow interrupts now that we are completely setup.
 385         */
 386        error = ahd_pci_map_int(ahd);
 387        if (!error)
 388                ahd->init_level++;
 389        return error;
 390}
 391
 392void
 393ahd_pci_suspend(struct ahd_softc *ahd)
 394{
 395        /*
 396         * Save chip register configuration data for chip resets
 397         * that occur during runtime and resume events.
 398         */
 399        ahd->suspend_state.pci_state.devconfig =
 400            ahd_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4);
 401        ahd->suspend_state.pci_state.command =
 402            ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/1);
 403        ahd->suspend_state.pci_state.csize_lattime =
 404            ahd_pci_read_config(ahd->dev_softc, CSIZE_LATTIME, /*bytes*/1);
 405
 406}
 407
 408void
 409ahd_pci_resume(struct ahd_softc *ahd)
 410{
 411        ahd_pci_write_config(ahd->dev_softc, DEVCONFIG,
 412                             ahd->suspend_state.pci_state.devconfig, /*bytes*/4);
 413        ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
 414                             ahd->suspend_state.pci_state.command, /*bytes*/1);
 415        ahd_pci_write_config(ahd->dev_softc, CSIZE_LATTIME,
 416                             ahd->suspend_state.pci_state.csize_lattime, /*bytes*/1);
 417}
 418
 419/*
 420 * Perform some simple tests that should catch situations where
 421 * our registers are invalidly mapped.
 422 */
 423int
 424ahd_pci_test_register_access(struct ahd_softc *ahd)
 425{
 426        uint32_t cmd;
 427        u_int    targpcistat;
 428        u_int    pci_status1;
 429        int      error;
 430        uint8_t  hcntrl;
 431
 432        error = EIO;
 433
 434        /*
 435         * Enable PCI error interrupt status, but suppress NMIs
 436         * generated by SERR raised due to target aborts.
 437         */
 438        cmd = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/2);
 439        ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
 440                             cmd & ~PCIM_CMD_SERRESPEN, /*bytes*/2);
 441
 442        /*
 443         * First a simple test to see if any
 444         * registers can be read.  Reading
 445         * HCNTRL has no side effects and has
 446         * at least one bit that is guaranteed to
 447         * be zero so it is a good register to
 448         * use for this test.
 449         */
 450        hcntrl = ahd_inb(ahd, HCNTRL);
 451        if (hcntrl == 0xFF)
 452                goto fail;
 453
 454        /*
 455         * Next create a situation where write combining
 456         * or read prefetching could be initiated by the
 457         * CPU or host bridge.  Our device does not support
 458         * either, so look for data corruption and/or flaged
 459         * PCI errors.  First pause without causing another
 460         * chip reset.
 461         */
 462        hcntrl &= ~CHIPRST;
 463        ahd_outb(ahd, HCNTRL, hcntrl|PAUSE);
 464        while (ahd_is_paused(ahd) == 0)
 465                ;
 466
 467        /* Clear any PCI errors that occurred before our driver attached. */
 468        ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
 469        targpcistat = ahd_inb(ahd, TARGPCISTAT);
 470        ahd_outb(ahd, TARGPCISTAT, targpcistat);
 471        pci_status1 = ahd_pci_read_config(ahd->dev_softc,
 472                                          PCIR_STATUS + 1, /*bytes*/1);
 473        ahd_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
 474                             pci_status1, /*bytes*/1);
 475        ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
 476        ahd_outb(ahd, CLRINT, CLRPCIINT);
 477
 478        ahd_outb(ahd, SEQCTL0, PERRORDIS);
 479        ahd_outl(ahd, SRAM_BASE, 0x5aa555aa);
 480        if (ahd_inl(ahd, SRAM_BASE) != 0x5aa555aa)
 481                goto fail;
 482
 483        if ((ahd_inb(ahd, INTSTAT) & PCIINT) != 0) {
 484                u_int targpcistat;
 485
 486                ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
 487                targpcistat = ahd_inb(ahd, TARGPCISTAT);
 488                if ((targpcistat & STA) != 0)
 489                        goto fail;
 490        }
 491
 492        error = 0;
 493
 494fail:
 495        if ((ahd_inb(ahd, INTSTAT) & PCIINT) != 0) {
 496
 497                ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
 498                targpcistat = ahd_inb(ahd, TARGPCISTAT);
 499
 500                /* Silently clear any latched errors. */
 501                ahd_outb(ahd, TARGPCISTAT, targpcistat);
 502                pci_status1 = ahd_pci_read_config(ahd->dev_softc,
 503                                                  PCIR_STATUS + 1, /*bytes*/1);
 504                ahd_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
 505                                     pci_status1, /*bytes*/1);
 506                ahd_outb(ahd, CLRINT, CLRPCIINT);
 507        }
 508        ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS);
 509        ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, cmd, /*bytes*/2);
 510        return (error);
 511}
 512
 513/*
 514 * Check the external port logic for a serial eeprom
 515 * and termination/cable detection contrls.
 516 */
 517static int
 518ahd_check_extport(struct ahd_softc *ahd)
 519{
 520        struct  vpd_config vpd;
 521        struct  seeprom_config *sc;
 522        u_int   adapter_control;
 523        int     have_seeprom;
 524        int     error;
 525
 526        sc = ahd->seep_config;
 527        have_seeprom = ahd_acquire_seeprom(ahd);
 528        if (have_seeprom) {
 529                u_int start_addr;
 530
 531                /*
 532                 * Fetch VPD for this function and parse it.
 533                 */
 534                if (bootverbose) 
 535                        printf("%s: Reading VPD from SEEPROM...",
 536                               ahd_name(ahd));
 537
 538                /* Address is always in units of 16bit words */
 539                start_addr = ((2 * sizeof(*sc))
 540                            + (sizeof(vpd) * (ahd->channel - 'A'))) / 2;
 541
 542                error = ahd_read_seeprom(ahd, (uint16_t *)&vpd,
 543                                         start_addr, sizeof(vpd)/2,
 544                                         /*bytestream*/TRUE);
 545                if (error == 0)
 546                        error = ahd_parse_vpddata(ahd, &vpd);
 547                if (bootverbose) 
 548                        printf("%s: VPD parsing %s\n",
 549                               ahd_name(ahd),
 550                               error == 0 ? "successful" : "failed");
 551
 552                if (bootverbose) 
 553                        printf("%s: Reading SEEPROM...", ahd_name(ahd));
 554
 555                /* Address is always in units of 16bit words */
 556                start_addr = (sizeof(*sc) / 2) * (ahd->channel - 'A');
 557
 558                error = ahd_read_seeprom(ahd, (uint16_t *)sc,
 559                                         start_addr, sizeof(*sc)/2,
 560                                         /*bytestream*/FALSE);
 561
 562                if (error != 0) {
 563                        printf("Unable to read SEEPROM\n");
 564                        have_seeprom = 0;
 565                } else {
 566                        have_seeprom = ahd_verify_cksum(sc);
 567
 568                        if (bootverbose) {
 569                                if (have_seeprom == 0)
 570                                        printf ("checksum error\n");
 571                                else
 572                                        printf ("done.\n");
 573                        }
 574                }
 575                ahd_release_seeprom(ahd);
 576        }
 577
 578        if (!have_seeprom) {
 579                u_int     nvram_scb;
 580
 581                /*
 582                 * Pull scratch ram settings and treat them as
 583                 * if they are the contents of an seeprom if
 584                 * the 'ADPT', 'BIOS', or 'ASPI' signature is found
 585                 * in SCB 0xFF.  We manually compose the data as 16bit
 586                 * values to avoid endian issues.
 587                 */
 588                ahd_set_scbptr(ahd, 0xFF);
 589                nvram_scb = ahd_inb_scbram(ahd, SCB_BASE + NVRAM_SCB_OFFSET);
 590                if (nvram_scb != 0xFF
 591                 && ((ahd_inb_scbram(ahd, SCB_BASE + 0) == 'A'
 592                   && ahd_inb_scbram(ahd, SCB_BASE + 1) == 'D'
 593                   && ahd_inb_scbram(ahd, SCB_BASE + 2) == 'P'
 594                   && ahd_inb_scbram(ahd, SCB_BASE + 3) == 'T')
 595                  || (ahd_inb_scbram(ahd, SCB_BASE + 0) == 'B'
 596                   && ahd_inb_scbram(ahd, SCB_BASE + 1) == 'I'
 597                   && ahd_inb_scbram(ahd, SCB_BASE + 2) == 'O'
 598                   && ahd_inb_scbram(ahd, SCB_BASE + 3) == 'S')
 599                  || (ahd_inb_scbram(ahd, SCB_BASE + 0) == 'A'
 600                   && ahd_inb_scbram(ahd, SCB_BASE + 1) == 'S'
 601                   && ahd_inb_scbram(ahd, SCB_BASE + 2) == 'P'
 602                   && ahd_inb_scbram(ahd, SCB_BASE + 3) == 'I'))) {
 603                        uint16_t *sc_data;
 604                        int       i;
 605
 606                        ahd_set_scbptr(ahd, nvram_scb);
 607                        sc_data = (uint16_t *)sc;
 608                        for (i = 0; i < 64; i += 2)
 609                                *sc_data++ = ahd_inw_scbram(ahd, SCB_BASE+i);
 610                        have_seeprom = ahd_verify_cksum(sc);
 611                        if (have_seeprom)
 612                                ahd->flags |= AHD_SCB_CONFIG_USED;
 613                }
 614        }
 615
 616#ifdef AHD_DEBUG
 617        if (have_seeprom != 0
 618         && (ahd_debug & AHD_DUMP_SEEPROM) != 0) {
 619                uint16_t *sc_data;
 620                int       i;
 621
 622                printf("%s: Seeprom Contents:", ahd_name(ahd));
 623                sc_data = (uint16_t *)sc;
 624                for (i = 0; i < (sizeof(*sc)); i += 2)
 625                        printf("\n\t0x%.4x", sc_data[i]);
 626                printf("\n");
 627        }
 628#endif
 629
 630        if (!have_seeprom) {
 631                if (bootverbose)
 632                        printf("%s: No SEEPROM available.\n", ahd_name(ahd));
 633                ahd->flags |= AHD_USEDEFAULTS;
 634                error = ahd_default_config(ahd);
 635                adapter_control = CFAUTOTERM|CFSEAUTOTERM;
 636                free(ahd->seep_config, M_DEVBUF);
 637                ahd->seep_config = NULL;
 638        } else {
 639                error = ahd_parse_cfgdata(ahd, sc);
 640                adapter_control = sc->adapter_control;
 641        }
 642        if (error != 0)
 643                return (error);
 644
 645        ahd_configure_termination(ahd, adapter_control);
 646
 647        return (0);
 648}
 649
 650static void
 651ahd_configure_termination(struct ahd_softc *ahd, u_int adapter_control)
 652{
 653        int      error;
 654        u_int    sxfrctl1;
 655        uint8_t  termctl;
 656        uint32_t devconfig;
 657
 658        devconfig = ahd_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4);
 659        devconfig &= ~STPWLEVEL;
 660        if ((ahd->flags & AHD_STPWLEVEL_A) != 0)
 661                devconfig |= STPWLEVEL;
 662        if (bootverbose)
 663                printf("%s: STPWLEVEL is %s\n",
 664                       ahd_name(ahd), (devconfig & STPWLEVEL) ? "on" : "off");
 665        ahd_pci_write_config(ahd->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
 666 
 667        /* Make sure current sensing is off. */
 668        if ((ahd->flags & AHD_CURRENT_SENSING) != 0) {
 669                (void)ahd_write_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, 0);
 670        }
 671
 672        /*
 673         * Read to sense.  Write to set.
 674         */
 675        error = ahd_read_flexport(ahd, FLXADDR_TERMCTL, &termctl);
 676        if ((adapter_control & CFAUTOTERM) == 0) {
 677                if (bootverbose)
 678                        printf("%s: Manual Primary Termination\n",
 679                               ahd_name(ahd));
 680                termctl &= ~(FLX_TERMCTL_ENPRILOW|FLX_TERMCTL_ENPRIHIGH);
 681                if ((adapter_control & CFSTERM) != 0)
 682                        termctl |= FLX_TERMCTL_ENPRILOW;
 683                if ((adapter_control & CFWSTERM) != 0)
 684                        termctl |= FLX_TERMCTL_ENPRIHIGH;
 685        } else if (error != 0) {
 686                printf("%s: Primary Auto-Term Sensing failed! "
 687                       "Using Defaults.\n", ahd_name(ahd));
 688                termctl = FLX_TERMCTL_ENPRILOW|FLX_TERMCTL_ENPRIHIGH;
 689        }
 690
 691        if ((adapter_control & CFSEAUTOTERM) == 0) {
 692                if (bootverbose)
 693                        printf("%s: Manual Secondary Termination\n",
 694                               ahd_name(ahd));
 695                termctl &= ~(FLX_TERMCTL_ENSECLOW|FLX_TERMCTL_ENSECHIGH);
 696                if ((adapter_control & CFSELOWTERM) != 0)
 697                        termctl |= FLX_TERMCTL_ENSECLOW;
 698                if ((adapter_control & CFSEHIGHTERM) != 0)
 699                        termctl |= FLX_TERMCTL_ENSECHIGH;
 700        } else if (error != 0) {
 701                printf("%s: Secondary Auto-Term Sensing failed! "
 702                       "Using Defaults.\n", ahd_name(ahd));
 703                termctl |= FLX_TERMCTL_ENSECLOW|FLX_TERMCTL_ENSECHIGH;
 704        }
 705
 706        /*
 707         * Now set the termination based on what we found.
 708         */
 709        sxfrctl1 = ahd_inb(ahd, SXFRCTL1) & ~STPWEN;
 710        ahd->flags &= ~AHD_TERM_ENB_A;
 711        if ((termctl & FLX_TERMCTL_ENPRILOW) != 0) {
 712                ahd->flags |= AHD_TERM_ENB_A;
 713                sxfrctl1 |= STPWEN;
 714        }
 715        /* Must set the latch once in order to be effective. */
 716        ahd_outb(ahd, SXFRCTL1, sxfrctl1|STPWEN);
 717        ahd_outb(ahd, SXFRCTL1, sxfrctl1);
 718
 719        error = ahd_write_flexport(ahd, FLXADDR_TERMCTL, termctl);
 720        if (error != 0) {
 721                printf("%s: Unable to set termination settings!\n",
 722                       ahd_name(ahd));
 723        } else if (bootverbose) {
 724                printf("%s: Primary High byte termination %sabled\n",
 725                       ahd_name(ahd),
 726                       (termctl & FLX_TERMCTL_ENPRIHIGH) ? "En" : "Dis");
 727
 728                printf("%s: Primary Low byte termination %sabled\n",
 729                       ahd_name(ahd),
 730                       (termctl & FLX_TERMCTL_ENPRILOW) ? "En" : "Dis");
 731
 732                printf("%s: Secondary High byte termination %sabled\n",
 733                       ahd_name(ahd),
 734                       (termctl & FLX_TERMCTL_ENSECHIGH) ? "En" : "Dis");
 735
 736                printf("%s: Secondary Low byte termination %sabled\n",
 737                       ahd_name(ahd),
 738                       (termctl & FLX_TERMCTL_ENSECLOW) ? "En" : "Dis");
 739        }
 740        return;
 741}
 742
 743#define DPE     0x80
 744#define SSE     0x40
 745#define RMA     0x20
 746#define RTA     0x10
 747#define STA     0x08
 748#define DPR     0x01
 749
 750static const char *split_status_source[] =
 751{
 752        "DFF0",
 753        "DFF1",
 754        "OVLY",
 755        "CMC",
 756};
 757
 758static const char *pci_status_source[] =
 759{
 760        "DFF0",
 761        "DFF1",
 762        "SG",
 763        "CMC",
 764        "OVLY",
 765        "NONE",
 766        "MSI",
 767        "TARG"
 768};
 769
 770static const char *split_status_strings[] =
 771{
 772        "%s: Received split response in %s.\n",
 773        "%s: Received split completion error message in %s\n",
 774        "%s: Receive overrun in %s\n",
 775        "%s: Count not complete in %s\n",
 776        "%s: Split completion data bucket in %s\n",
 777        "%s: Split completion address error in %s\n",
 778        "%s: Split completion byte count error in %s\n",
 779        "%s: Signaled Target-abort to early terminate a split in %s\n"
 780};
 781
 782static const char *pci_status_strings[] =
 783{
 784        "%s: Data Parity Error has been reported via PERR# in %s\n",
 785        "%s: Target initial wait state error in %s\n",
 786        "%s: Split completion read data parity error in %s\n",
 787        "%s: Split completion address attribute parity error in %s\n",
 788        "%s: Received a Target Abort in %s\n",
 789        "%s: Received a Master Abort in %s\n",
 790        "%s: Signal System Error Detected in %s\n",
 791        "%s: Address or Write Phase Parity Error Detected in %s.\n"
 792};
 793
 794static void
 795ahd_pci_intr(struct ahd_softc *ahd)
 796{
 797        uint8_t         pci_status[8];
 798        ahd_mode_state  saved_modes;
 799        u_int           pci_status1;
 800        u_int           intstat;
 801        u_int           i;
 802        u_int           reg;
 803        
 804        intstat = ahd_inb(ahd, INTSTAT);
 805
 806        if ((intstat & SPLTINT) != 0)
 807                ahd_pci_split_intr(ahd, intstat);
 808
 809        if ((intstat & PCIINT) == 0)
 810                return;
 811
 812        printf("%s: PCI error Interrupt\n", ahd_name(ahd));
 813        saved_modes = ahd_save_modes(ahd);
 814        ahd_dump_card_state(ahd);
 815        ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
 816        for (i = 0, reg = DF0PCISTAT; i < 8; i++, reg++) {
 817
 818                if (i == 5)
 819                        continue;
 820                pci_status[i] = ahd_inb(ahd, reg);
 821                /* Clear latched errors.  So our interrupt deasserts. */
 822                ahd_outb(ahd, reg, pci_status[i]);
 823        }
 824
 825        for (i = 0; i < 8; i++) {
 826                u_int bit;
 827        
 828                if (i == 5)
 829                        continue;
 830
 831                for (bit = 0; bit < 8; bit++) {
 832
 833                        if ((pci_status[i] & (0x1 << bit)) != 0) {
 834                                static const char *s;
 835
 836                                s = pci_status_strings[bit];
 837                                if (i == 7/*TARG*/ && bit == 3)
 838                                        s = "%s: Signaled Target Abort\n";
 839                                printf(s, ahd_name(ahd), pci_status_source[i]);
 840                        }
 841                }       
 842        }
 843        pci_status1 = ahd_pci_read_config(ahd->dev_softc,
 844                                          PCIR_STATUS + 1, /*bytes*/1);
 845        ahd_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
 846                             pci_status1, /*bytes*/1);
 847        ahd_restore_modes(ahd, saved_modes);
 848        ahd_outb(ahd, CLRINT, CLRPCIINT);
 849        ahd_unpause(ahd);
 850}
 851
 852static void
 853ahd_pci_split_intr(struct ahd_softc *ahd, u_int intstat)
 854{
 855        uint8_t         split_status[4];
 856        uint8_t         split_status1[4];
 857        uint8_t         sg_split_status[2];
 858        uint8_t         sg_split_status1[2];
 859        ahd_mode_state  saved_modes;
 860        u_int           i;
 861        uint16_t        pcix_status;
 862
 863        /*
 864         * Check for splits in all modes.  Modes 0 and 1
 865         * additionally have SG engine splits to look at.
 866         */
 867        pcix_status = ahd_pci_read_config(ahd->dev_softc, PCIXR_STATUS,
 868                                          /*bytes*/2);
 869        printf("%s: PCI Split Interrupt - PCI-X status = 0x%x\n",
 870               ahd_name(ahd), pcix_status);
 871        saved_modes = ahd_save_modes(ahd);
 872        for (i = 0; i < 4; i++) {
 873                ahd_set_modes(ahd, i, i);
 874
 875                split_status[i] = ahd_inb(ahd, DCHSPLTSTAT0);
 876                split_status1[i] = ahd_inb(ahd, DCHSPLTSTAT1);
 877                /* Clear latched errors.  So our interrupt deasserts. */
 878                ahd_outb(ahd, DCHSPLTSTAT0, split_status[i]);
 879                ahd_outb(ahd, DCHSPLTSTAT1, split_status1[i]);
 880                if (i > 1)
 881                        continue;
 882                sg_split_status[i] = ahd_inb(ahd, SGSPLTSTAT0);
 883                sg_split_status1[i] = ahd_inb(ahd, SGSPLTSTAT1);
 884                /* Clear latched errors.  So our interrupt deasserts. */
 885                ahd_outb(ahd, SGSPLTSTAT0, sg_split_status[i]);
 886                ahd_outb(ahd, SGSPLTSTAT1, sg_split_status1[i]);
 887        }
 888
 889        for (i = 0; i < 4; i++) {
 890                u_int bit;
 891
 892                for (bit = 0; bit < 8; bit++) {
 893
 894                        if ((split_status[i] & (0x1 << bit)) != 0) {
 895                                static const char *s;
 896
 897                                s = split_status_strings[bit];
 898                                printf(s, ahd_name(ahd),
 899                                       split_status_source[i]);
 900                        }
 901
 902                        if (i > 1)
 903                                continue;
 904
 905                        if ((sg_split_status[i] & (0x1 << bit)) != 0) {
 906                                static const char *s;
 907
 908                                s = split_status_strings[bit];
 909                                printf(s, ahd_name(ahd), "SG");
 910                        }
 911                }
 912        }
 913        /*
 914         * Clear PCI-X status bits.
 915         */
 916        ahd_pci_write_config(ahd->dev_softc, PCIXR_STATUS,
 917                             pcix_status, /*bytes*/2);
 918        ahd_outb(ahd, CLRINT, CLRSPLTINT);
 919        ahd_restore_modes(ahd, saved_modes);
 920}
 921
 922static int
 923ahd_aic7901_setup(struct ahd_softc *ahd)
 924{
 925
 926        ahd->chip = AHD_AIC7901;
 927        ahd->features = AHD_AIC7901_FE;
 928        return (ahd_aic790X_setup(ahd));
 929}
 930
 931static int
 932ahd_aic7901A_setup(struct ahd_softc *ahd)
 933{
 934
 935        ahd->chip = AHD_AIC7901A;
 936        ahd->features = AHD_AIC7901A_FE;
 937        return (ahd_aic790X_setup(ahd));
 938}
 939
 940static int
 941ahd_aic7902_setup(struct ahd_softc *ahd)
 942{
 943        ahd->chip = AHD_AIC7902;
 944        ahd->features = AHD_AIC7902_FE;
 945        return (ahd_aic790X_setup(ahd));
 946}
 947
 948static int
 949ahd_aic790X_setup(struct ahd_softc *ahd)
 950{
 951        ahd_dev_softc_t pci;
 952        u_int rev;
 953
 954        pci = ahd->dev_softc;
 955        rev = ahd_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
 956        if (rev < ID_AIC7902_PCI_REV_A4) {
 957                printf("%s: Unable to attach to unsupported chip revision %d\n",
 958                       ahd_name(ahd), rev);
 959                ahd_pci_write_config(pci, PCIR_COMMAND, 0, /*bytes*/2);
 960                return (ENXIO);
 961        }
 962        ahd->channel = ahd_get_pci_function(pci) + 'A';
 963        if (rev < ID_AIC7902_PCI_REV_B0) {
 964                /*
 965                 * Enable A series workarounds.
 966                 */
 967                ahd->bugs |= AHD_SENT_SCB_UPDATE_BUG|AHD_ABORT_LQI_BUG
 968                          |  AHD_PKT_BITBUCKET_BUG|AHD_LONG_SETIMO_BUG
 969                          |  AHD_NLQICRC_DELAYED_BUG|AHD_SCSIRST_BUG
 970                          |  AHD_LQO_ATNO_BUG|AHD_AUTOFLUSH_BUG
 971                          |  AHD_CLRLQO_AUTOCLR_BUG|AHD_PCIX_MMAPIO_BUG
 972                          |  AHD_PCIX_CHIPRST_BUG|AHD_PCIX_SCBRAM_RD_BUG
 973                          |  AHD_PKTIZED_STATUS_BUG|AHD_PKT_LUN_BUG
 974                          |  AHD_MDFF_WSCBPTR_BUG|AHD_REG_SLOW_SETTLE_BUG
 975                          |  AHD_SET_MODE_BUG|AHD_BUSFREEREV_BUG
 976                          |  AHD_NONPACKFIFO_BUG|AHD_PACED_NEGTABLE_BUG
 977                          |  AHD_FAINT_LED_BUG;
 978
 979                /*
 980                 * IO Cell paramter setup.
 981                 */
 982                AHD_SET_PRECOMP(ahd, AHD_PRECOMP_CUTBACK_29);
 983
 984                if ((ahd->flags & AHD_HP_BOARD) == 0)
 985                        AHD_SET_SLEWRATE(ahd, AHD_SLEWRATE_DEF_REVA);
 986        } else {
 987                /* This is revision B and newer. */
 988                extern uint32_t aic79xx_slowcrc;
 989                u_int devconfig1;
 990
 991                ahd->features |= AHD_RTI|AHD_NEW_IOCELL_OPTS
 992                              |  AHD_NEW_DFCNTRL_OPTS|AHD_FAST_CDB_DELIVERY
 993                              |  AHD_BUSFREEREV_BUG;
 994                ahd->bugs |= AHD_LQOOVERRUN_BUG|AHD_EARLY_REQ_BUG;
 995
 996                /* If the user requested that the SLOWCRC bit to be set. */
 997                if (aic79xx_slowcrc)
 998                        ahd->features |= AHD_AIC79XXB_SLOWCRC;
 999
1000                /*
1001                 * Some issues have been resolved in the 7901B.
1002                 */
1003                if ((ahd->features & AHD_MULTI_FUNC) != 0)
1004                        ahd->bugs |= AHD_INTCOLLISION_BUG|AHD_ABORT_LQI_BUG;
1005
1006                /*
1007                 * IO Cell paramter setup.
1008                 */
1009                AHD_SET_PRECOMP(ahd, AHD_PRECOMP_CUTBACK_29);
1010                AHD_SET_SLEWRATE(ahd, AHD_SLEWRATE_DEF_REVB);
1011                AHD_SET_AMPLITUDE(ahd, AHD_AMPLITUDE_DEF);
1012
1013                /*
1014                 * Set the PREQDIS bit for H2B which disables some workaround
1015                 * that doesn't work on regular PCI busses.
1016                 * XXX - Find out exactly what this does from the hardware
1017                 *       folks!
1018                 */
1019                devconfig1 = ahd_pci_read_config(pci, DEVCONFIG1, /*bytes*/1);
1020                ahd_pci_write_config(pci, DEVCONFIG1,
1021                                     devconfig1|PREQDIS, /*bytes*/1);
1022                devconfig1 = ahd_pci_read_config(pci, DEVCONFIG1, /*bytes*/1);
1023        }
1024
1025        return (0);
1026}
1027