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 #include "aic7xxx_osm.h"
  46 #include "aic7xxx_inline.h"
  47 #include "aic7xxx_93cx6.h"
  48
  49 #define ID_AIC7770      0x04907770
  50 #define ID_AHA_274x     0x04907771
  51 #define ID_AHA_284xB    0x04907756 /* BIOS enabled */
  52 #define ID_AHA_284x     0x04907757 /* BIOS disabled*/
  53 #define ID_OLV_274x     0x04907782 /* Olivetti OEM */
  54 #define ID_OLV_274xD    0x04907783 /* Olivetti OEM (Differential) */
  55
  56 static int aic7770_chip_init(struct ahc_softc *ahc);
  57 static int aha2840_load_seeprom(struct ahc_softc *ahc);
  58 static ahc_device_setup_t ahc_aic7770_VL_setup;
  59 static ahc_device_setup_t ahc_aic7770_EISA_setup;
  60 static ahc_device_setup_t ahc_aic7770_setup;
  61
  62 struct aic7770_identity aic7770_ident_table[] =
  63 {
  64         {
  65                 ID_AHA_274x,
  66                 0xFFFFFFFF,
  67                 "Adaptec 274X SCSI adapter",
  68                 ahc_aic7770_EISA_setup
  69         },
  70         {
  71                 ID_AHA_284xB,
  72                 0xFFFFFFFE,
  73                 "Adaptec 284X SCSI adapter",
  74                 ahc_aic7770_VL_setup
  75         },
  76         {
  77                 ID_AHA_284x,
  78                 0xFFFFFFFE,
  79                 "Adaptec 284X SCSI adapter (BIOS Disabled)",
  80                 ahc_aic7770_VL_setup
  81         },
  82         {
  83                 ID_OLV_274x,
  84                 0xFFFFFFFF,
  85                 "Adaptec (Olivetti OEM) 274X SCSI adapter",
  86                 ahc_aic7770_EISA_setup
  87         },
  88         {
  89                 ID_OLV_274xD,
  90                 0xFFFFFFFF,
  91                 "Adaptec (Olivetti OEM) 274X Differential SCSI adapter",
  92                 ahc_aic7770_EISA_setup
  93         },
  94         /* Generic chip probes for devices we don't know 'exactly' */
  95         {
  96                 ID_AIC7770,
  97                 0xFFFFFFFF,
  98                 "Adaptec aic7770 SCSI adapter",
  99                 ahc_aic7770_EISA_setup
 100         }
 101 };
 102 const int ahc_num_aic7770_devs = ARRAY_SIZE(aic7770_ident_table);
 103
 104 struct aic7770_identity *
 105 aic7770_find_device(uint32_t id)
 106 {
 107         struct  aic7770_identity *entry;
 108         int     i;
 109
 110         for (i = 0; i < ahc_num_aic7770_devs; i++) {
 111                 entry = &aic7770_ident_table[i];
 112                 if (entry->full_id == (id & entry->id_mask))
 113                         return (entry);
 114         }
 115         return (NULL);
 116 }
 117
 118 int
 119 aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *entry, u_int io)
 120 {
 121         int     error;
 122         int     have_seeprom;
 123         u_int   hostconf;
 124         u_int   irq;
 125         u_int   intdef;
 126
 127         error = entry->setup(ahc);
 128         have_seeprom = 0;
 129         if (error != 0)
 130                 return (error);
 131
 132         error = aic7770_map_registers(ahc, io);
 133         if (error != 0)
 134                 return (error);
 135
 136         /*
 137          * Before we continue probing the card, ensure that
 138          * its interrupts are *disabled*.  We don't want
 139          * a misstep to hang the machine in an interrupt
 140          * storm.
 141          */
 142         ahc_intr_enable(ahc, FALSE);
 143
 144         ahc->description = entry->name;
 145         error = ahc_softc_init(ahc);
 146         if (error != 0)
 147                 return (error);
 148
 149         ahc->bus_chip_init = aic7770_chip_init;
 150
 151         error = ahc_reset(ahc, /*reinit*/FALSE);
 152         if (error != 0)
 153                 return (error);
 154
 155         /* Make sure we have a valid interrupt vector */
 156         intdef = ahc_inb(ahc, INTDEF);
 157         irq = intdef & VECTOR;
 158         switch (irq) {
 159         case 9:
 160         case 10:
 161         case 11:
 162         case 12:
 163         case 14:
 164         case 15:
 165                 break;
 166         default:
 167                 printk("aic7770_config: invalid irq setting %d\n", intdef);
 168                 return (ENXIO);
 169         }
 170
 171         if ((intdef & EDGE_TRIG) != 0)
 172                 ahc->flags |= AHC_EDGE_INTERRUPT;
 173
 174         switch (ahc->chip & (AHC_EISA|AHC_VL)) {
 175         case AHC_EISA:
 176         {
 177                 u_int biosctrl;
 178                 u_int scsiconf;
 179                 u_int scsiconf1;
 180
 181                 biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
 182                 scsiconf = ahc_inb(ahc, SCSICONF);
 183                 scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
 184
 185                 /* Get the primary channel information */
 186                 if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
 187                         ahc->flags |= 1;
 188
 189                 if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
 190                         ahc->flags |= AHC_USEDEFAULTS;
 191                 } else {
 192                         if ((ahc->features & AHC_WIDE) != 0) {
 193                                 ahc->our_id = scsiconf1 & HWSCSIID;
 194                                 if (scsiconf & TERM_ENB)
 195                                         ahc->flags |= AHC_TERM_ENB_A;
 196                         } else {
 197                                 ahc->our_id = scsiconf & HSCSIID;
 198                                 ahc->our_id_b = scsiconf1 & HSCSIID;
 199                                 if (scsiconf & TERM_ENB)
 200                                         ahc->flags |= AHC_TERM_ENB_A;
 201                                 if (scsiconf1 & TERM_ENB)
 202                                         ahc->flags |= AHC_TERM_ENB_B;
 203                         }
 204                 }
 205                 if ((ahc_inb(ahc, HA_274_BIOSGLOBAL) & HA_274_EXTENDED_TRANS))
 206                         ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
 207                 break;
 208         }
 209         case AHC_VL:
 210         {
 211                 have_seeprom = aha2840_load_seeprom(ahc);
 212                 break;
 213         }
 214         default:
 215                 break;
 216         }
 217         if (have_seeprom == 0) {
 218                 kfree(ahc->seep_config);
 219                 ahc->seep_config = NULL;
 220         }
 221
 222         /*
 223          * Ensure autoflush is enabled
 224          */
 225         ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
 226
 227         /* Setup the FIFO threshold and the bus off time */
 228         hostconf = ahc_inb(ahc, HOSTCONF);
 229         ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
 230         ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
 231
 232         ahc->bus_softc.aic7770_softc.busspd = hostconf & DFTHRSH;
 233         ahc->bus_softc.aic7770_softc.bustime = (hostconf << 2) & BOFF;
 234
 235         /*
 236          * Generic aic7xxx initialization.
 237          */
 238         error = ahc_init(ahc);
 239         if (error != 0)
 240                 return (error);
 241
 242         error = aic7770_map_int(ahc, irq);
 243         if (error != 0)
 244                 return (error);
 245
 246         ahc->init_level++;
 247
 248         /*
 249          * Enable the board's BUS drivers
 250          */
 251         ahc_outb(ahc, BCTL, ENABLE);
 252         return (0);
 253 }
 254
 255 static int
 256 aic7770_chip_init(struct ahc_softc *ahc)
 257 {
 258         ahc_outb(ahc, BUSSPD, ahc->bus_softc.aic7770_softc.busspd);
 259         ahc_outb(ahc, BUSTIME, ahc->bus_softc.aic7770_softc.bustime);
 260         ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
 261         ahc_outb(ahc, BCTL, ENABLE);
 262         return (ahc_chip_init(ahc));
 263 }
 264
 265 /*
 266  * Read the 284x SEEPROM.
 267  */
 268 static int
 269 aha2840_load_seeprom(struct ahc_softc *ahc)
 270 {
 271         struct  seeprom_descriptor sd;
 272         struct  seeprom_config *sc;
 273         int     have_seeprom;
 274         uint8_t scsi_conf;
 275
 276         sd.sd_ahc = ahc;
 277         sd.sd_control_offset = SEECTL_2840;
 278         sd.sd_status_offset = STATUS_2840;
 279         sd.sd_dataout_offset = STATUS_2840;
 280         sd.sd_chip = C46;
 281         sd.sd_MS = 0;
 282         sd.sd_RDY = EEPROM_TF;
 283         sd.sd_CS = CS_2840;
 284         sd.sd_CK = CK_2840;
 285         sd.sd_DO = DO_2840;
 286         sd.sd_DI = DI_2840;
 287         sc = ahc->seep_config;
 288
 289         if (bootverbose)
 290                 printk("%s: Reading SEEPROM...", ahc_name(ahc));
 291         have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
 292                                         /*start_addr*/0, sizeof(*sc)/2);
 293
 294         if (have_seeprom) {
 295
 296                 if (ahc_verify_cksum(sc) == 0) {
 297                         if(bootverbose)
 298                                 printk ("checksum error\n");
 299                         have_seeprom = 0;
 300                 } else if (bootverbose) {
 301                         printk("done.\n");
 302                 }
 303         }
 304
 305         if (!have_seeprom) {
 306                 if (bootverbose)
 307                         printk("%s: No SEEPROM available\n", ahc_name(ahc));
 308                 ahc->flags |= AHC_USEDEFAULTS;
 309         } else {
 310                 /*
 311                  * Put the data we've collected down into SRAM
 312                  * where ahc_init will find it.
 313                  */
 314                 int      i;
 315                 int      max_targ;
 316                 uint16_t discenable;
 317
 318                 max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
 319                 discenable = 0;
 320                 for (i = 0; i < max_targ; i++){
 321                         uint8_t target_settings;
 322
 323                         target_settings = (sc->device_flags[i] & CFXFER) << 4;
 324                         if (sc->device_flags[i] & CFSYNCH)
 325                                 target_settings |= SOFS;
 326                         if (sc->device_flags[i] & CFWIDEB)
 327                                 target_settings |= WIDEXFER;
 328                         if (sc->device_flags[i] & CFDISC)
 329                                 discenable |= (0x01 << i);
 330                         ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
 331                 }
 332                 ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
 333                 ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
 334
 335                 ahc->our_id = sc->brtime_id & CFSCSIID;
 336
 337                 scsi_conf = (ahc->our_id & 0x7);
 338                 if (sc->adapter_control & CFSPARITY)
 339                         scsi_conf |= ENSPCHK;
 340                 if (sc->adapter_control & CFRESETB)
 341                         scsi_conf |= RESET_SCSI;
 342
 343                 if (sc->bios_control & CF284XEXTEND)
 344                         ahc->flags |= AHC_EXTENDED_TRANS_A;
 345                 /* Set SCSICONF info */
 346                 ahc_outb(ahc, SCSICONF, scsi_conf);
 347
 348                 if (sc->adapter_control & CF284XSTERM)
 349                         ahc->flags |= AHC_TERM_ENB_A;
 350         }
 351         return (have_seeprom);
 352 }
 353
 354 static int
 355 ahc_aic7770_VL_setup(struct ahc_softc *ahc)
 356 {
 357         int error;
 358
 359         error = ahc_aic7770_setup(ahc);
 360         ahc->chip |= AHC_VL;
 361         return (error);
 362 }
 363
 364 static int
 365 ahc_aic7770_EISA_setup(struct ahc_softc *ahc)
 366 {
 367         int error;
 368
 369         error = ahc_aic7770_setup(ahc);
 370         ahc->chip |= AHC_EISA;
 371         return (error);
 372 }
 373
 374 static int
 375 ahc_aic7770_setup(struct ahc_softc *ahc)
 376 {
 377         ahc->channel = 'A';
 378         ahc->channel_b = 'B';
 379         ahc->chip = AHC_AIC7770;
 380         ahc->features = AHC_AIC7770_FE;
 381         ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
 382         ahc->flags |= AHC_PAGESCBS;
 383         ahc->instruction_ram_size = 448;
 384         return (0);
 385 }