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/slab.h>
  35 #include <linux/errno.h>
  36 #include <linux/delay.h>
  37 #include <asm/io.h>
  38 #include <asm/system.h>
  39 #include <asm/string.h>
  40 #include <asm/uaccess.h>
  41
  42 #include <linux/termios.h>
  43 #include <linux/serial.h>
  44
  45 #include <linux/generic_serial.h>
  46
  47
  48 #include "linux_compat.h"
  49 #include "pkt.h"
  50 #include "daemon.h"
  51 #include "rio.h"
  52 #include "riospace.h"
  53 #include "cmdpkt.h"
  54 #include "map.h"
  55 #include "rup.h"
  56 #include "port.h"
  57 #include "riodrvr.h"
  58 #include "rioinfo.h"
  59 #include "func.h"
  60 #include "errors.h"
  61 #include "pci.h"
  62
  63 #include "parmmap.h"
  64 #include "unixrup.h"
  65 #include "board.h"
  66 #include "host.h"
  67 #include "phb.h"
  68 #include "link.h"
  69 #include "cmdblk.h"
  70 #include "route.h"
  71 #include "cirrus.h"
  72 #include "rioioctl.h"
  73 #include "rio_linux.h"
  74
  75 int RIOPCIinit(struct rio_info *p, int Mode);
  76
  77 static int RIOScrub(int, u8 __iomem *, int);
  78
  79
  80 /**
  81 ** RIOAssignAT :
  82 **
  83 ** Fill out the fields in the p->RIOHosts structure now we know we know
  84 ** we have a board present.
  85 **
  86 ** bits < 0 indicates 8 bit operation requested,
  87 ** bits > 0 indicates 16 bit operation.
  88 */
  89
  90 int RIOAssignAT(struct rio_info *p, int Base, void __iomem *virtAddr, int mode)
  91 {
  92         int             bits;
  93         struct DpRam __iomem *cardp = (struct DpRam __iomem *)virtAddr;
  94
  95         if ((Base < ONE_MEG) || (mode & BYTE_ACCESS_MODE))
  96                 bits = BYTE_OPERATION;
  97         else
  98                 bits = WORD_OPERATION;
  99
 100         /*
 101         ** Board has passed its scrub test. Fill in all the
 102         ** transient stuff.
 103         */
 104         p->RIOHosts[p->RIONumHosts].Caddr       = virtAddr;
 105         p->RIOHosts[p->RIONumHosts].CardP       = virtAddr;
 106
 107         /*
 108         ** Revision 01 AT host cards don't support WORD operations,
 109         */
 110         if (readb(&cardp->DpRevision) == 01)
 111                 bits = BYTE_OPERATION;
 112
 113         p->RIOHosts[p->RIONumHosts].Type = RIO_AT;
 114         p->RIOHosts[p->RIONumHosts].Copy = rio_copy_to_card;
 115                                                                                         /* set this later */
 116         p->RIOHosts[p->RIONumHosts].Slot = -1;
 117         p->RIOHosts[p->RIONumHosts].Mode = SLOW_LINKS | SLOW_AT_BUS | bits;
 118         writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | p->RIOHosts[p->RIONumHosts].Mode | INTERRUPT_DISABLE ,
 119                 &p->RIOHosts[p->RIONumHosts].Control);
 120         writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt);
 121         writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | p->RIOHosts[p->RIONumHosts].Mode | INTERRUPT_DISABLE,
 122                 &p->RIOHosts[p->RIONumHosts].Control);
 123         writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt);
 124         p->RIOHosts[p->RIONumHosts].UniqueNum =
 125                 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0])&0xFF)<<0)|
 126                 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[1])&0xFF)<<8)|
 127                 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[2])&0xFF)<<16)|
 128                 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[3])&0xFF)<<24);
 129         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Uniquenum 0x%x\n",p->RIOHosts[p->RIONumHosts].UniqueNum);
 130
 131         p->RIONumHosts++;
 132         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Tests Passed at 0x%x\n", Base);
 133         return(1);
 134 }
 135
 136 static  u8      val[] = {
 137 #ifdef VERY_LONG_TEST
 138           0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80,
 139           0xa5, 0xff, 0x5a, 0x00, 0xff, 0xc9, 0x36,
 140 #endif
 141           0xff, 0x00, 0x00 };
 142
 143 #define TEST_END sizeof(val)
 144
 145 /*
 146 ** RAM test a board.
 147 ** Nothing too complicated, just enough to check it out.
 148 */
 149 int RIOBoardTest(unsigned long paddr, void __iomem *caddr, unsigned char type, int slot)
 150 {
 151         struct DpRam __iomem *DpRam = caddr;
 152         void __iomem *ram[4];
 153         int  size[4];
 154         int  op, bank;
 155         int  nbanks;
 156
 157         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Reset host type=%d, DpRam=%p, slot=%d\n",
 158                         type, DpRam, slot);
 159
 160         RIOHostReset(type, DpRam, slot);
 161
 162         /*
 163         ** Scrub the memory. This comes in several banks:
 164         ** DPsram1      - 7000h bytes
 165         ** DPsram2      - 200h  bytes
 166         ** DPsram3      - 7000h bytes
 167         ** scratch      - 1000h bytes
 168         */
 169
 170         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Setup ram/size arrays\n");
 171
 172         size[0] = DP_SRAM1_SIZE;
 173         size[1] = DP_SRAM2_SIZE;
 174         size[2] = DP_SRAM3_SIZE;
 175         size[3] = DP_SCRATCH_SIZE;
 176
 177         ram[0] = DpRam->DpSram1;
 178         ram[1] = DpRam->DpSram2;
 179         ram[2] = DpRam->DpSram3;
 180         nbanks = (type == RIO_PCI) ? 3 : 4;
 181         if (nbanks == 4)
 182                 ram[3] = DpRam->DpScratch;
 183
 184
 185         if (nbanks == 3) {
 186                 rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Memory: %p(0x%x), %p(0x%x), %p(0x%x)\n",
 187                                 ram[0], size[0], ram[1], size[1], ram[2], size[2]);
 188         } else {
 189                 rio_dprintk (RIO_DEBUG_INIT, "RIO-init: %p(0x%x), %p(0x%x), %p(0x%x), %p(0x%x)\n",
 190                                 ram[0], size[0], ram[1], size[1], ram[2], size[2], ram[3], size[3]);
 191         }
 192
 193         /*
 194         ** This scrub operation will test for crosstalk between
 195         ** banks. TEST_END is a magic number, and relates to the offset
 196         ** within the 'val' array used by Scrub.
 197         */
 198         for (op=0; op<TEST_END; op++) {
 199                 for (bank=0; bank<nbanks; bank++) {
 200                         if (RIOScrub(op, ram[bank], size[bank]) == RIO_FAIL) {
 201                                 rio_dprintk (RIO_DEBUG_INIT, "RIO-init: RIOScrub band %d, op %d failed\n",
 202                                                         bank, op);
 203                                 return RIO_FAIL;
 204                         }
 205                 }
 206         }
 207
 208         rio_dprintk (RIO_DEBUG_INIT, "Test completed\n");
 209         return 0;
 210 }
 211
 212
 213 /*
 214 ** Scrub an area of RAM.
 215 ** Define PRETEST and POSTTEST for a more thorough checking of the
 216 ** state of the memory.
 217 ** Call with op set to an index into the above 'val' array to determine
 218 ** which value will be written into memory.
 219 ** Call with op set to zero means that the RAM will not be read and checked
 220 ** before it is written.
 221 ** Call with op not zero and the RAM will be read and compared with val[op-1]
 222 ** to check that the data from the previous phase was retained.
 223 */
 224
 225 static int RIOScrub(int op, u8 __iomem *ram, int size)
 226 {
 227         int off;
 228         unsigned char   oldbyte;
 229         unsigned char   newbyte;
 230         unsigned char   invbyte;
 231         unsigned short  oldword;
 232         unsigned short  newword;
 233         unsigned short  invword;
 234         unsigned short  swapword;
 235
 236         if (op) {
 237                 oldbyte = val[op-1];
 238                 oldword = oldbyte | (oldbyte<<8);
 239         } else
 240           oldbyte = oldword = 0; /* Tell the compiler we've initilalized them. */
 241         newbyte = val[op];
 242         newword = newbyte | (newbyte<<8);
 243         invbyte = ~newbyte;
 244         invword = invbyte | (invbyte<<8);
 245
 246         /*
 247         ** Check that the RAM contains the value that should have been left there
 248         ** by the previous test (not applicable for pass zero)
 249         */
 250         if (op) {
 251                 for (off=0; off<size; off++) {
 252                         if (readb(ram + off) != oldbyte) {
 253                                 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));
 254                                 return RIO_FAIL;
 255                         }
 256                 }
 257                 for (off=0; off<size; off+=2) {
 258                         if (readw(ram + off) != oldword) {
 259                                 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));
 260                                 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));
 261                                 return RIO_FAIL;
 262                         }
 263                 }
 264         }
 265
 266         /*
 267         ** Now write the INVERSE of the test data into every location, using
 268         ** BYTE write operations, first checking before each byte is written
 269         ** that the location contains the old value still, and checking after
 270         ** the write that the location contains the data specified - this is
 271         ** the BYTE read/write test.
 272         */
 273         for (off=0; off<size; off++) {
 274                 if (op && (readb(ram + off) != oldbyte)) {
 275                         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));
 276                         return RIO_FAIL;
 277                 }
 278                 writeb(invbyte, ram + off);
 279                 if (readb(ram + off) != invbyte) {
 280                         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));
 281                         return RIO_FAIL;
 282                 }
 283         }
 284
 285         /*
 286         ** now, use WORD operations to write the test value into every location,
 287         ** check as before that the location contains the previous test value
 288         ** before overwriting, and that it contains the data value written
 289         ** afterwards.
 290         ** This is the WORD operation test.
 291         */
 292         for (off=0; off<size; off+=2) {
 293                 if (readw(ram + off) != invword) {
 294                         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));
 295                         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));
 296                         return RIO_FAIL;
 297                 }
 298
 299                 writew(newword, ram + off);
 300                 if ( readw(ram + off) != newword ) {
 301                         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));
 302                         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));
 303                         return RIO_FAIL;
 304                 }
 305         }
 306
 307         /*
 308         ** now run through the block of memory again, first in byte mode
 309         ** then in word mode, and check that all the locations contain the
 310         ** required test data.
 311         */
 312         for (off=0; off<size; off++) {
 313                 if (readb(ram + off) != newbyte) {
 314                         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));
 315                         return RIO_FAIL;
 316                 }
 317         }
 318
 319         for (off=0; off<size; off+=2) {
 320                 if (readw(ram + off) != newword ) {
 321                         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));
 322                         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));
 323                         return RIO_FAIL;
 324                 }
 325         }
 326
 327         /*
 328         ** time to check out byte swapping errors
 329         */
 330         swapword = invbyte | (newbyte << 8);
 331
 332         for (off=0; off<size; off+=2) {
 333                 writeb(invbyte, &ram[off]);
 334                 writeb(newbyte, &ram[off+1]);
 335         }
 336
 337         for ( off=0; off<size; off+=2 ) {
 338                 if (readw(ram + off) != swapword) {
 339                         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));
 340                         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));
 341                         return RIO_FAIL;
 342                 }
 343                 writew(~swapword, ram + off);
 344         }
 345
 346         for (off=0; off<size; off+=2) {
 347                 if (readb(ram + off) != newbyte) {
 348                         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));
 349                         return RIO_FAIL;
 350                 }
 351                 if (readb(ram + off + 1) != invbyte) {
 352                         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));
 353                         return RIO_FAIL;
 354                 }
 355                 writew(newword, ram + off);
 356         }
 357         return 0;
 358 }
 359
 360
 361 int RIODefaultName(struct rio_info *p, struct Host *HostP, unsigned int UnitId)
 362 {
 363         memcpy(HostP->Mapping[UnitId].Name, "UNKNOWN RTA X-XX", 17);
 364         HostP->Mapping[UnitId].Name[12]='1'+(HostP-p->RIOHosts);
 365         if ((UnitId+1) > 9) {
 366                 HostP->Mapping[UnitId].Name[14]='0'+((UnitId+1)/10);
 367                 HostP->Mapping[UnitId].Name[15]='0'+((UnitId+1)%10);
 368         }
 369         else {
 370                 HostP->Mapping[UnitId].Name[14]='1'+UnitId;
 371                 HostP->Mapping[UnitId].Name[15]=0;
 372         }
 373         return 0;
 374 }
 375
 376 #define RIO_RELEASE     "Linux"
 377 #define RELEASE_ID      "1.0"
 378
 379 static struct rioVersion        stVersion;
 380
 381 struct rioVersion *RIOVersid(void)
 382 {
 383     strlcpy(stVersion.version, "RIO driver for linux V1.0",
 384             sizeof(stVersion.version));
 385     strlcpy(stVersion.buildDate, __DATE__,
 386             sizeof(stVersion.buildDate));
 387
 388     return &stVersion;
 389 }
 390
 391 void RIOHostReset(unsigned int Type, struct DpRam __iomem *DpRamP, unsigned int Slot)
 392 {
 393         /*
 394         ** Reset the Tpu
 395         */
 396         rio_dprintk (RIO_DEBUG_INIT,  "RIOHostReset: type 0x%x", Type);
 397         switch ( Type ) {
 398         case RIO_AT:
 399                 rio_dprintk (RIO_DEBUG_INIT, " (RIO_AT)\n");
 400                 writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | INTERRUPT_DISABLE | BYTE_OPERATION |
 401                         SLOW_LINKS | SLOW_AT_BUS, &DpRamP->DpControl);
 402                 writeb(0xFF, &DpRamP->DpResetTpu);
 403                 udelay(3);
 404                         rio_dprintk (RIO_DEBUG_INIT,  "RIOHostReset: Don't know if it worked. Try reset again\n");
 405                 writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | INTERRUPT_DISABLE |
 406                         BYTE_OPERATION | SLOW_LINKS | SLOW_AT_BUS, &DpRamP->DpControl);
 407                 writeb(0xFF, &DpRamP->DpResetTpu);
 408                 udelay(3);
 409                 break;
 410         case RIO_PCI:
 411                 rio_dprintk (RIO_DEBUG_INIT, " (RIO_PCI)\n");
 412                 writeb(RIO_PCI_BOOT_FROM_RAM, &DpRamP->DpControl);
 413                 writeb(0xFF, &DpRamP->DpResetInt);
 414                 writeb(0xFF, &DpRamP->DpResetTpu);
 415                 udelay(100);
 416                 break;
 417         default:
 418                 rio_dprintk (RIO_DEBUG_INIT, " (UNKNOWN)\n");
 419                 break;
 420         }
 421         return;
 422 }