release/src-rt-6.x/linux/linux-2.6/drivers/scsi/aic7xxx/aic7770.c

   1 /*
   2  * Product specific probe and attach routines for:
   3  *      27/284X and aic7770 motherboard SCSI controllers
   4  *
   5  * Copyright (c) 1994-1998, 2000, 2001 Justin T. Gibbs.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions, and the following disclaimer,
  13  *    without modification.
  14  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  15  *    substantially similar to the "NO WARRANTY" disclaimer below
  16  *    ("Disclaimer") and any redistribution must be conditioned upon
  17  *    including a substantially similar Disclaimer requirement for further
  18  *    binary redistribution.
  19  * 3. Neither the names of the above-listed copyright holders nor the names
  20  *    of any contributors may be used to endorse or promote products derived
  21  *    from this software without specific prior written permission.
  22  *
  23  * Alternatively, this software may be distributed under the terms of the
  24  * GNU General Public License ("GPL") version 2 as published by the Free
  25  * Software Foundation.
  26  *
  27  * NO WARRANTY
  28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  30  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  31  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  32  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  36  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  37  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  38  * POSSIBILITY OF SUCH DAMAGES.
  39  *
  40  * $Id: //depot/aic7xxx/aic7xxx/aic7770.c#32 $
  41  *
  42  * $FreeBSD$
  43  */
  44
  45 #ifdef __linux__
  46 #include "aic7xxx_osm.h"
  47 #include "aic7xxx_inline.h"
  48 #include "aic7xxx_93cx6.h"
  49 #else
  50 #include <dev/aic7xxx/aic7xxx_osm.h>
  51 #include <dev/aic7xxx/aic7xxx_inline.h>
  52 #include <dev/aic7xxx/aic7xxx_93cx6.h>
  53 #endif
  54
  55 #define ID_AIC7770      0x04907770
  56 #define ID_AHA_274x     0x04907771
  57 #define ID_AHA_284xB    0x04907756 /* BIOS enabled */
  58 #define ID_AHA_284x     0x04907757 /* BIOS disabled*/
  59 #define ID_OLV_274x     0x04907782 /* Olivetti OEM */
  60 #define ID_OLV_274xD    0x04907783 /* Olivetti OEM (Differential) */
  61
  62 static int aic7770_chip_init(struct ahc_softc *ahc);
  63 static int aic7770_suspend(struct ahc_softc *ahc);
  64 static int aic7770_resume(struct ahc_softc *ahc);
  65 static int aha2840_load_seeprom(struct ahc_softc *ahc);
  66 static ahc_device_setup_t ahc_aic7770_VL_setup;
  67 static ahc_device_setup_t ahc_aic7770_EISA_setup;
  68 static ahc_device_setup_t ahc_aic7770_setup;
  69
  70 struct aic7770_identity aic7770_ident_table[] =
  71 {
  72         {
  73                 ID_AHA_274x,
  74                 0xFFFFFFFF,
  75                 "Adaptec 274X SCSI adapter",
  76                 ahc_aic7770_EISA_setup
  77         },
  78         {
  79                 ID_AHA_284xB,
  80                 0xFFFFFFFE,
  81                 "Adaptec 284X SCSI adapter",
  82                 ahc_aic7770_VL_setup
  83         },
  84         {
  85                 ID_AHA_284x,
  86                 0xFFFFFFFE,
  87                 "Adaptec 284X SCSI adapter (BIOS Disabled)",
  88                 ahc_aic7770_VL_setup
  89         },
  90         {
  91                 ID_OLV_274x,
  92                 0xFFFFFFFF,
  93                 "Adaptec (Olivetti OEM) 274X SCSI adapter",
  94                 ahc_aic7770_EISA_setup
  95         },
  96         {
  97                 ID_OLV_274xD,
  98                 0xFFFFFFFF,
  99                 "Adaptec (Olivetti OEM) 274X Differential SCSI adapter",
 100                 ahc_aic7770_EISA_setup
 101         },
 102         /* Generic chip probes for devices we don't know 'exactly' */
 103         {
 104                 ID_AIC7770,
 105                 0xFFFFFFFF,
 106                 "Adaptec aic7770 SCSI adapter",
 107                 ahc_aic7770_EISA_setup
 108         }
 109 };
 110 const int ahc_num_aic7770_devs = ARRAY_SIZE(aic7770_ident_table);
 111
 112 struct aic7770_identity *
 113 aic7770_find_device(uint32_t id)
 114 {
 115         struct  aic7770_identity *entry;
 116         int     i;
 117
 118         for (i = 0; i < ahc_num_aic7770_devs; i++) {
 119                 entry = &aic7770_ident_table[i];
 120                 if (entry->full_id == (id & entry->id_mask))
 121                         return (entry);
 122         }
 123         return (NULL);
 124 }
 125
 126 int
 127 aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *entry, u_int io)
 128 {
 129         int     error;
 130         int     have_seeprom;
 131         u_int   hostconf;
 132         u_int   irq;
 133         u_int   intdef;
 134
 135         error = entry->setup(ahc);
 136         have_seeprom = 0;
 137         if (error != 0)
 138                 return (error);
 139
 140         error = aic7770_map_registers(ahc, io);
 141         if (error != 0)
 142                 return (error);
 143
 144         /*
 145          * Before we continue probing the card, ensure that
 146          * its interrupts are *disabled*.  We don't want
 147          * a misstep to hang the machine in an interrupt
 148          * storm.
 149          */
 150         ahc_intr_enable(ahc, FALSE);
 151
 152         ahc->description = entry->name;
 153         error = ahc_softc_init(ahc);
 154         if (error != 0)
 155                 return (error);
 156
 157         ahc->bus_chip_init = aic7770_chip_init;
 158         ahc->bus_suspend = aic7770_suspend;
 159         ahc->bus_resume = aic7770_resume;
 160
 161         error = ahc_reset(ahc, /*reinit*/FALSE);
 162         if (error != 0)
 163                 return (error);
 164
 165         /* Make sure we have a valid interrupt vector */
 166         intdef = ahc_inb(ahc, INTDEF);
 167         irq = intdef & VECTOR;
 168         switch (irq) {
 169         case 9:
 170         case 10:
 171         case 11:
 172         case 12:
 173         case 14:
 174         case 15:
 175                 break;
 176         default:
 177                 printf("aic7770_config: invalid irq setting %d\n", intdef);
 178                 return (ENXIO);
 179         }
 180
 181         if ((intdef & EDGE_TRIG) != 0)
 182                 ahc->flags |= AHC_EDGE_INTERRUPT;
 183
 184         switch (ahc->chip & (AHC_EISA|AHC_VL)) {
 185         case AHC_EISA:
 186         {
 187                 u_int biosctrl;
 188                 u_int scsiconf;
 189                 u_int scsiconf1;
 190
 191                 biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
 192                 scsiconf = ahc_inb(ahc, SCSICONF);
 193                 scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
 194
 195                 /* Get the primary channel information */
 196                 if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
 197                         ahc->flags |= 1;
 198
 199                 if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
 200                         ahc->flags |= AHC_USEDEFAULTS;
 201                 } else {
 202                         if ((ahc->features & AHC_WIDE) != 0) {
 203                                 ahc->our_id = scsiconf1 & HWSCSIID;
 204                                 if (scsiconf & TERM_ENB)
 205                                         ahc->flags |= AHC_TERM_ENB_A;
 206                         } else {
 207                                 ahc->our_id = scsiconf & HSCSIID;
 208                                 ahc->our_id_b = scsiconf1 & HSCSIID;
 209                                 if (scsiconf & TERM_ENB)
 210                                         ahc->flags |= AHC_TERM_ENB_A;
 211                                 if (scsiconf1 & TERM_ENB)
 212                                         ahc->flags |= AHC_TERM_ENB_B;
 213                         }
 214                 }
 215                 if ((ahc_inb(ahc, HA_274_BIOSGLOBAL) & HA_274_EXTENDED_TRANS))
 216                         ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
 217                 break;
 218         }
 219         case AHC_VL:
 220         {
 221                 have_seeprom = aha2840_load_seeprom(ahc);
 222                 break;
 223         }
 224         default:
 225                 break;
 226         }
 227         if (have_seeprom == 0) {
 228                 free(ahc->seep_config, M_DEVBUF);
 229                 ahc->seep_config = NULL;
 230         }
 231
 232         /*
 233          * Ensure autoflush is enabled
 234          */
 235         ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
 236
 237         /* Setup the FIFO threshold and the bus off time */
 238         hostconf = ahc_inb(ahc, HOSTCONF);
 239         ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
 240         ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
 241
 242         ahc->bus_softc.aic7770_softc.busspd = hostconf & DFTHRSH;
 243         ahc->bus_softc.aic7770_softc.bustime = (hostconf << 2) & BOFF;
 244
 245         /*
 246          * Generic aic7xxx initialization.
 247          */
 248         error = ahc_init(ahc);
 249         if (error != 0)
 250                 return (error);
 251
 252         error = aic7770_map_int(ahc, irq);
 253         if (error != 0)
 254                 return (error);
 255
 256         ahc->init_level++;
 257
 258         /*
 259          * Enable the board's BUS drivers
 260          */
 261         ahc_outb(ahc, BCTL, ENABLE);
 262         return (0);
 263 }
 264
 265 static int
 266 aic7770_chip_init(struct ahc_softc *ahc)
 267 {
 268         ahc_outb(ahc, BUSSPD, ahc->bus_softc.aic7770_softc.busspd);
 269         ahc_outb(ahc, BUSTIME, ahc->bus_softc.aic7770_softc.bustime);
 270         ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
 271         ahc_outb(ahc, BCTL, ENABLE);
 272         return (ahc_chip_init(ahc));
 273 }
 274
 275 static int
 276 aic7770_suspend(struct ahc_softc *ahc)
 277 {
 278         return (ahc_suspend(ahc));
 279 }
 280
 281 static int
 282 aic7770_resume(struct ahc_softc *ahc)
 283 {
 284         return (ahc_resume(ahc));
 285 }
 286
 287 /*
 288  * Read the 284x SEEPROM.
 289  */
 290 static int
 291 aha2840_load_seeprom(struct ahc_softc *ahc)
 292 {
 293         struct  seeprom_descriptor sd;
 294         struct  seeprom_config *sc;
 295         int     have_seeprom;
 296         uint8_t scsi_conf;
 297
 298         sd.sd_ahc = ahc;
 299         sd.sd_control_offset = SEECTL_2840;
 300         sd.sd_status_offset = STATUS_2840;
 301         sd.sd_dataout_offset = STATUS_2840;
 302         sd.sd_chip = C46;
 303         sd.sd_MS = 0;
 304         sd.sd_RDY = EEPROM_TF;
 305         sd.sd_CS = CS_2840;
 306         sd.sd_CK = CK_2840;
 307         sd.sd_DO = DO_2840;
 308         sd.sd_DI = DI_2840;
 309         sc = ahc->seep_config;
 310
 311         if (bootverbose)
 312                 printf("%s: Reading SEEPROM...", ahc_name(ahc));
 313         have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
 314                                         /*start_addr*/0, sizeof(*sc)/2);
 315
 316         if (have_seeprom) {
 317
 318                 if (ahc_verify_cksum(sc) == 0) {
 319                         if(bootverbose)
 320                                 printf ("checksum error\n");
 321                         have_seeprom = 0;
 322                 } else if (bootverbose) {
 323                         printf("done.\n");
 324                 }
 325         }
 326
 327         if (!have_seeprom) {
 328                 if (bootverbose)
 329                         printf("%s: No SEEPROM available\n", ahc_name(ahc));
 330                 ahc->flags |= AHC_USEDEFAULTS;
 331         } else {
 332                 /*
 333                  * Put the data we've collected down into SRAM
 334                  * where ahc_init will find it.
 335                  */
 336                 int      i;
 337                 int      max_targ;
 338                 uint16_t discenable;
 339
 340                 max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
 341                 discenable = 0;
 342                 for (i = 0; i < max_targ; i++){
 343                         uint8_t target_settings;
 344
 345                         target_settings = (sc->device_flags[i] & CFXFER) << 4;
 346                         if (sc->device_flags[i] & CFSYNCH)
 347                                 target_settings |= SOFS;
 348                         if (sc->device_flags[i] & CFWIDEB)
 349                                 target_settings |= WIDEXFER;
 350                         if (sc->device_flags[i] & CFDISC)
 351                                 discenable |= (0x01 << i);
 352                         ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
 353                 }
 354                 ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
 355                 ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
 356
 357                 ahc->our_id = sc->brtime_id & CFSCSIID;
 358
 359                 scsi_conf = (ahc->our_id & 0x7);
 360                 if (sc->adapter_control & CFSPARITY)
 361                         scsi_conf |= ENSPCHK;
 362                 if (sc->adapter_control & CFRESETB)
 363                         scsi_conf |= RESET_SCSI;
 364
 365                 if (sc->bios_control & CF284XEXTEND)
 366                         ahc->flags |= AHC_EXTENDED_TRANS_A;
 367                 /* Set SCSICONF info */
 368                 ahc_outb(ahc, SCSICONF, scsi_conf);
 369
 370                 if (sc->adapter_control & CF284XSTERM)
 371                         ahc->flags |= AHC_TERM_ENB_A;
 372         }
 373         return (have_seeprom);
 374 }
 375
 376 static int
 377 ahc_aic7770_VL_setup(struct ahc_softc *ahc)
 378 {
 379         int error;
 380
 381         error = ahc_aic7770_setup(ahc);
 382         ahc->chip |= AHC_VL;
 383         return (error);
 384 }
 385
 386 static int
 387 ahc_aic7770_EISA_setup(struct ahc_softc *ahc)
 388 {
 389         int error;
 390
 391         error = ahc_aic7770_setup(ahc);
 392         ahc->chip |= AHC_EISA;
 393         return (error);
 394 }
 395
 396 static int
 397 ahc_aic7770_setup(struct ahc_softc *ahc)
 398 {
 399         ahc->channel = 'A';
 400         ahc->channel_b = 'B';
 401         ahc->chip = AHC_AIC7770;
 402         ahc->features = AHC_AIC7770_FE;
 403         ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
 404         ahc->flags |= AHC_PAGESCBS;
 405         ahc->instruction_ram_size = 448;
 406         return (0);
 407 }