drivers/char/rio/rioinit.c

   1 /*
   2 ** -----------------------------------------------------------------------------
   3 **
   4 **  Perle Specialix driver for Linux
   5 **  Ported from existing RIO Driver for SCO sources.
   6  *
   7  *  (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
   8  *
   9  *      This program is free software; you can redistribute it and/or modify
  10  *      it under the terms of the GNU General Public License as published by
  11  *      the Free Software Foundation; either version 2 of the License, or
  12  *      (at your option) any later version.
  13  *
  14  *      This program is distributed in the hope that it will be useful,
  15  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *      GNU General Public License for more details.
  18  *
  19  *      You should have received a copy of the GNU General Public License
  20  *      along with this program; if not, write to the Free Software
  21  *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 **
  23 **      Module          : rioinit.c
  24 **      SID             : 1.3
  25 **      Last Modified   : 11/6/98 10:33:43
  26 **      Retrieved       : 11/6/98 10:33:49
  27 **
  28 **  ident @(#)rioinit.c 1.3
  29 **
  30 ** -----------------------------------------------------------------------------
  31 */
  32
  33 #include <linux/module.h>
  34 #include <linux/errno.h>
  35 #include <linux/delay.h>
  36 #include <asm/io.h>
  37 #include <asm/system.h>
  38 #include <asm/string.h>
  39 #include <asm/uaccess.h>
  40
  41 #include <linux/termios.h>
  42 #include <linux/serial.h>
  43
  44 #include <linux/generic_serial.h>
  45
  46
  47 #include "linux_compat.h"
  48 #include "pkt.h"
  49 #include "daemon.h"
  50 #include "rio.h"
  51 #include "riospace.h"
  52 #include "cmdpkt.h"
  53 #include "map.h"
  54 #include "rup.h"
  55 #include "port.h"
  56 #include "riodrvr.h"
  57 #include "rioinfo.h"
  58 #include "func.h"
  59 #include "errors.h"
  60 #include "pci.h"
  61
  62 #include "parmmap.h"
  63 #include "unixrup.h"
  64 #include "board.h"
  65 #include "host.h"
  66 #include "phb.h"
  67 #include "link.h"
  68 #include "cmdblk.h"
  69 #include "route.h"
  70 #include "cirrus.h"
  71 #include "rioioctl.h"
  72 #include "rio_linux.h"
  73
  74 int RIOPCIinit(struct rio_info *p, int Mode);
  75
  76 static int RIOScrub(int, u8 __iomem *, int);
  77
  78
  79 /**
  80 ** RIOAssignAT :
  81 **
  82 ** Fill out the fields in the p->RIOHosts structure now we know we know
  83 ** we have a board present.
  84 **
  85 ** bits < 0 indicates 8 bit operation requested,
  86 ** bits > 0 indicates 16 bit operation.
  87 */
  88
  89 int RIOAssignAT(struct rio_info *p, int Base, void __iomem *virtAddr, int mode)
  90 {
  91         int             bits;
  92         struct DpRam __iomem *cardp = (struct DpRam __iomem *)virtAddr;
  93
  94         if ((Base < ONE_MEG) || (mode & BYTE_ACCESS_MODE))
  95                 bits = BYTE_OPERATION;
  96         else
  97                 bits = WORD_OPERATION;
  98
  99         /*
 100         ** Board has passed its scrub test. Fill in all the
 101         ** transient stuff.
 102         */
 103         p->RIOHosts[p->RIONumHosts].Caddr       = virtAddr;
 104         p->RIOHosts[p->RIONumHosts].CardP       = virtAddr;
 105
 106         /*
 107         ** Revision 01 AT host cards don't support WORD operations,
 108         */
 109         if (readb(&cardp->DpRevision) == 01)
 110                 bits = BYTE_OPERATION;
 111
 112         p->RIOHosts[p->RIONumHosts].Type = RIO_AT;
 113         p->RIOHosts[p->RIONumHosts].Copy = rio_copy_to_card;
 114                                                                                         /* set this later */
 115         p->RIOHosts[p->RIONumHosts].Slot = -1;
 116         p->RIOHosts[p->RIONumHosts].Mode = SLOW_LINKS | SLOW_AT_BUS | bits;
 117         writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | p->RIOHosts[p->RIONumHosts].Mode | INTERRUPT_DISABLE ,
 118                 &p->RIOHosts[p->RIONumHosts].Control);
 119         writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt);
 120         writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | p->RIOHosts[p->RIONumHosts].Mode | INTERRUPT_DISABLE,
 121                 &p->RIOHosts[p->RIONumHosts].Control);
 122         writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt);
 123         p->RIOHosts[p->RIONumHosts].UniqueNum =
 124                 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0])&0xFF)<<0)|
 125                 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[1])&0xFF)<<8)|
 126                 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[2])&0xFF)<<16)|
 127                 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[3])&0xFF)<<24);
 128         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Uniquenum 0x%x\n",p->RIOHosts[p->RIONumHosts].UniqueNum);
 129
 130         p->RIONumHosts++;
 131         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Tests Passed at 0x%x\n", Base);
 132         return(1);
 133 }
 134
 135 static  u8      val[] = {
 136 #ifdef VERY_LONG_TEST
 137           0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80,
 138           0xa5, 0xff, 0x5a, 0x00, 0xff, 0xc9, 0x36,
 139 #endif
 140           0xff, 0x00, 0x00 };
 141
 142 #define TEST_END sizeof(val)
 143
 144 /*
 145 ** RAM test a board.
 146 ** Nothing too complicated, just enough to check it out.
 147 */
 148 int RIOBoardTest(unsigned long paddr, void __iomem *caddr, unsigned char type, int slot)
 149 {
 150         struct DpRam __iomem *DpRam = caddr;
 151         void __iomem *ram[4];
 152         int  size[4];
 153         int  op, bank;
 154         int  nbanks;
 155
 156         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Reset host type=%d, DpRam=%p, slot=%d\n",
 157                         type, DpRam, slot);
 158
 159         RIOHostReset(type, DpRam, slot);
 160
 161         /*
 162         ** Scrub the memory. This comes in several banks:
 163         ** DPsram1      - 7000h bytes
 164         ** DPsram2      - 200h  bytes
 165         ** DPsram3      - 7000h bytes
 166         ** scratch      - 1000h bytes
 167         */
 168
 169         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Setup ram/size arrays\n");
 170
 171         size[0] = DP_SRAM1_SIZE;
 172         size[1] = DP_SRAM2_SIZE;
 173         size[2] = DP_SRAM3_SIZE;
 174         size[3] = DP_SCRATCH_SIZE;
 175
 176         ram[0] = DpRam->DpSram1;
 177         ram[1] = DpRam->DpSram2;
 178         ram[2] = DpRam->DpSram3;
 179         nbanks = (type == RIO_PCI) ? 3 : 4;
 180         if (nbanks == 4)
 181                 ram[3] = DpRam->DpScratch;
 182
 183
 184         if (nbanks == 3) {
 185                 rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Memory: %p(0x%x), %p(0x%x), %p(0x%x)\n",
 186                                 ram[0], size[0], ram[1], size[1], ram[2], size[2]);
 187         } else {
 188                 rio_dprintk (RIO_DEBUG_INIT, "RIO-init: %p(0x%x), %p(0x%x), %p(0x%x), %p(0x%x)\n",
 189                                 ram[0], size[0], ram[1], size[1], ram[2], size[2], ram[3], size[3]);
 190         }
 191
 192         /*
 193         ** This scrub operation will test for crosstalk between
 194         ** banks. TEST_END is a magic number, and relates to the offset
 195         ** within the 'val' array used by Scrub.
 196         */
 197         for (op=0; op<TEST_END; op++) {
 198                 for (bank=0; bank<nbanks; bank++) {
 199                         if (RIOScrub(op, ram[bank], size[bank]) == RIO_FAIL) {
 200                                 rio_dprintk (RIO_DEBUG_INIT, "RIO-init: RIOScrub band %d, op %d failed\n",
 201                                                         bank, op);
 202                                 return RIO_FAIL;
 203                         }
 204                 }
 205         }
 206
 207         rio_dprintk (RIO_DEBUG_INIT, "Test completed\n");
 208         return 0;
 209 }
 210
 211
 212 /*
 213 ** Scrub an area of RAM.
 214 ** Define PRETEST and POSTTEST for a more thorough checking of the
 215 ** state of the memory.
 216 ** Call with op set to an index into the above 'val' array to determine
 217 ** which value will be written into memory.
 218 ** Call with op set to zero means that the RAM will not be read and checked
 219 ** before it is written.
 220 ** Call with op not zero and the RAM will be read and compared with val[op-1]
 221 ** to check that the data from the previous phase was retained.
 222 */
 223
 224 static int RIOScrub(int op, u8 __iomem *ram, int size)
 225 {
 226         int off;
 227         unsigned char   oldbyte;
 228         unsigned char   newbyte;
 229         unsigned char   invbyte;
 230         unsigned short  oldword;
 231         unsigned short  newword;
 232         unsigned short  invword;
 233         unsigned short  swapword;
 234
 235         if (op) {
 236                 oldbyte = val[op-1];
 237                 oldword = oldbyte | (oldbyte<<8);
 238         } else
 239           oldbyte = oldword = 0; /* Tell the compiler we've initilalized them. */
 240         newbyte = val[op];
 241         newword = newbyte | (newbyte<<8);
 242         invbyte = ~newbyte;
 243         invword = invbyte | (invbyte<<8);
 244
 245         /*
 246         ** Check that the RAM contains the value that should have been left there
 247         ** by the previous test (not applicable for pass zero)
 248         */
 249         if (op) {
 250                 for (off=0; off<size; off++) {
 251                         if (readb(ram + off) != oldbyte) {
 252                                 rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Byte Pre Check 1: BYTE at offset 0x%x should have been=%x, was=%x\n", off, oldbyte, readb(ram + off));
 253                                 return RIO_FAIL;
 254                         }
 255                 }
 256                 for (off=0; off<size; off+=2) {
 257                         if (readw(ram + off) != oldword) {
 258                                 rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Word Pre Check: WORD at offset 0x%x should have been=%x, was=%x\n",off,oldword, readw(ram + off));
 259                                 rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Word Pre Check: BYTE at offset 0x%x is %x BYTE at offset 0x%x is %x\n", off, readb(ram + off), off+1, readb(ram+off+1));
 260                                 return RIO_FAIL;
 261                         }
 262                 }
 263         }
 264
 265         /*
 266         ** Now write the INVERSE of the test data into every location, using
 267         ** BYTE write operations, first checking before each byte is written
 268         ** that the location contains the old value still, and checking after
 269         ** the write that the location contains the data specified - this is
 270         ** the BYTE read/write test.
 271         */
 272         for (off=0; off<size; off++) {
 273                 if (op && (readb(ram + off) != oldbyte)) {
 274                         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Byte Pre Check 2: BYTE at offset 0x%x should have been=%x, was=%x\n", off, oldbyte, readb(ram + off));
 275                         return RIO_FAIL;
 276                 }
 277                 writeb(invbyte, ram + off);
 278                 if (readb(ram + off) != invbyte) {
 279                         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Byte Inv Check: BYTE at offset 0x%x should have been=%x, was=%x\n", off, invbyte, readb(ram + off));
 280                         return RIO_FAIL;
 281                 }
 282         }
 283
 284         /*
 285         ** now, use WORD operations to write the test value into every location,
 286         ** check as before that the location contains the previous test value
 287         ** before overwriting, and that it contains the data value written
 288         ** afterwards.
 289         ** This is the WORD operation test.
 290         */
 291         for (off=0; off<size; off+=2) {
 292                 if (readw(ram + off) != invword) {
 293                         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Word Inv Check: WORD at offset 0x%x should have been=%x, was=%x\n", off, invword, readw(ram + off));
 294                         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Word Inv Check: BYTE at offset 0x%x is %x BYTE at offset 0x%x is %x\n", off, readb(ram + off), off+1, readb(ram+off+1));
 295                         return RIO_FAIL;
 296                 }
 297
 298                 writew(newword, ram + off);
 299                 if ( readw(ram + off) != newword ) {
 300                         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Post Word Check 1: WORD at offset 0x%x should have been=%x, was=%x\n", off, newword, readw(ram + off));
 301                         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Post Word Check 1: BYTE at offset 0x%x is %x BYTE at offset 0x%x is %x\n", off, readb(ram + off), off+1, readb(ram + off + 1));
 302                         return RIO_FAIL;
 303                 }
 304         }
 305
 306         /*
 307         ** now run through the block of memory again, first in byte mode
 308         ** then in word mode, and check that all the locations contain the
 309         ** required test data.
 310         */
 311         for (off=0; off<size; off++) {
 312                 if (readb(ram + off) != newbyte) {
 313                         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Post Byte Check: BYTE at offset 0x%x should have been=%x, was=%x\n", off, newbyte, readb(ram + off));
 314                         return RIO_FAIL;
 315                 }
 316         }
 317
 318         for (off=0; off<size; off+=2) {
 319                 if (readw(ram + off) != newword ) {
 320                         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Post Word Check 2: WORD at offset 0x%x should have been=%x, was=%x\n", off, newword, readw(ram + off));
 321                         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Post Word Check 2: BYTE at offset 0x%x is %x BYTE at offset 0x%x is %x\n", off, readb(ram + off), off+1, readb(ram + off + 1));
 322                         return RIO_FAIL;
 323                 }
 324         }
 325
 326         /*
 327         ** time to check out byte swapping errors
 328         */
 329         swapword = invbyte | (newbyte << 8);
 330
 331         for (off=0; off<size; off+=2) {
 332                 writeb(invbyte, &ram[off]);
 333                 writeb(newbyte, &ram[off+1]);
 334         }
 335
 336         for ( off=0; off<size; off+=2 ) {
 337                 if (readw(ram + off) != swapword) {
 338                         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: SwapWord Check 1: WORD at offset 0x%x should have been=%x, was=%x\n", off, swapword, readw(ram + off));
 339                         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: SwapWord Check 1: BYTE at offset 0x%x is %x BYTE at offset 0x%x is %x\n", off, readb(ram + off), off+1, readb(ram + off + 1));
 340                         return RIO_FAIL;
 341                 }
 342                 writew(~swapword, ram + off);
 343         }
 344
 345         for (off=0; off<size; off+=2) {
 346                 if (readb(ram + off) != newbyte) {
 347                         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: SwapWord Check 2: BYTE at offset 0x%x should have been=%x, was=%x\n", off, newbyte, readb(ram + off));
 348                         return RIO_FAIL;
 349                 }
 350                 if (readb(ram + off + 1) != invbyte) {
 351                         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: SwapWord Check 2: BYTE at offset 0x%x should have been=%x, was=%x\n", off+1, invbyte, readb(ram + off + 1));
 352                         return RIO_FAIL;
 353                 }
 354                 writew(newword, ram + off);
 355         }
 356         return 0;
 357 }
 358
 359
 360 int RIODefaultName(struct rio_info *p, struct Host *HostP, unsigned int UnitId)
 361 {
 362         memcpy(HostP->Mapping[UnitId].Name, "UNKNOWN RTA X-XX", 17);
 363         HostP->Mapping[UnitId].Name[12]='1'+(HostP-p->RIOHosts);
 364         if ((UnitId+1) > 9) {
 365                 HostP->Mapping[UnitId].Name[14]='0'+((UnitId+1)/10);
 366                 HostP->Mapping[UnitId].Name[15]='0'+((UnitId+1)%10);
 367         }
 368         else {
 369                 HostP->Mapping[UnitId].Name[14]='1'+UnitId;
 370                 HostP->Mapping[UnitId].Name[15]=0;
 371         }
 372         return 0;
 373 }
 374
 375 #define RIO_RELEASE     "Linux"
 376 #define RELEASE_ID      "1.0"
 377
 378 static struct rioVersion        stVersion;
 379
 380 struct rioVersion *RIOVersid(void)
 381 {
 382     strlcpy(stVersion.version, "RIO driver for linux V1.0",
 383             sizeof(stVersion.version));
 384     strlcpy(stVersion.buildDate, __DATE__,
 385             sizeof(stVersion.buildDate));
 386
 387     return &stVersion;
 388 }
 389
 390 void RIOHostReset(unsigned int Type, struct DpRam __iomem *DpRamP, unsigned int Slot)
 391 {
 392         /*
 393         ** Reset the Tpu
 394         */
 395         rio_dprintk (RIO_DEBUG_INIT,  "RIOHostReset: type 0x%x", Type);
 396         switch ( Type ) {
 397         case RIO_AT:
 398                 rio_dprintk (RIO_DEBUG_INIT, " (RIO_AT)\n");
 399                 writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | INTERRUPT_DISABLE | BYTE_OPERATION |
 400                         SLOW_LINKS | SLOW_AT_BUS, &DpRamP->DpControl);
 401                 writeb(0xFF, &DpRamP->DpResetTpu);
 402                 udelay(3);
 403                         rio_dprintk (RIO_DEBUG_INIT,  "RIOHostReset: Don't know if it worked. Try reset again\n");
 404                 writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | INTERRUPT_DISABLE |
 405                         BYTE_OPERATION | SLOW_LINKS | SLOW_AT_BUS, &DpRamP->DpControl);
 406                 writeb(0xFF, &DpRamP->DpResetTpu);
 407                 udelay(3);
 408                 break;
 409         case RIO_PCI:
 410                 rio_dprintk (RIO_DEBUG_INIT, " (RIO_PCI)\n");
 411                 writeb(RIO_PCI_BOOT_FROM_RAM, &DpRamP->DpControl);
 412                 writeb(0xFF, &DpRamP->DpResetInt);
 413                 writeb(0xFF, &DpRamP->DpResetTpu);
 414                 udelay(100);
 415                 break;
 416         default:
 417                 rio_dprintk (RIO_DEBUG_INIT, " (UNKNOWN)\n");
 418                 break;
 419         }
 420         return;
 421 }