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 #ifdef SCCS_LABELS
  33 static char *_rioinit_c_sccs_ = "@(#)rioinit.c  1.3";
  34 #endif
  35
  36 #include <linux/config.h>
  37 #include <linux/module.h>
  38 #include <linux/slab.h>
  39 #include <linux/errno.h>
  40 #include <linux/delay.h>
  41 #include <asm/io.h>
  42 #include <asm/system.h>
  43 #include <asm/string.h>
  44 #include <asm/semaphore.h>
  45 #include <asm/uaccess.h>
  46
  47 #include <linux/termios.h>
  48 #include <linux/serial.h>
  49
  50 #include <linux/generic_serial.h>
  51
  52
  53 #include "linux_compat.h"
  54 #include "pkt.h"
  55 #include "daemon.h"
  56 #include "rio.h"
  57 #include "riospace.h"
  58 #include "cmdpkt.h"
  59 #include "map.h"
  60 #include "rup.h"
  61 #include "port.h"
  62 #include "riodrvr.h"
  63 #include "rioinfo.h"
  64 #include "func.h"
  65 #include "errors.h"
  66 #include "pci.h"
  67
  68 #include "parmmap.h"
  69 #include "unixrup.h"
  70 #include "board.h"
  71 #include "host.h"
  72 #include "phb.h"
  73 #include "link.h"
  74 #include "cmdblk.h"
  75 #include "route.h"
  76 #include "cirrus.h"
  77 #include "rioioctl.h"
  78 #include "rio_linux.h"
  79
  80 int RIOPCIinit(struct rio_info *p, int Mode);
  81
  82 static int RIOScrub(int, u8 *, int);
  83
  84
  85 /**
  86 ** RIOAssignAT :
  87 **
  88 ** Fill out the fields in the p->RIOHosts structure now we know we know
  89 ** we have a board present.
  90 **
  91 ** bits < 0 indicates 8 bit operation requested,
  92 ** bits > 0 indicates 16 bit operation.
  93 */
  94
  95 int RIOAssignAT(struct rio_info *p, int Base, caddr_t   virtAddr, int mode)
  96 {
  97         int             bits;
  98         struct DpRam *cardp = (struct DpRam *)virtAddr;
  99
 100         if ((Base < ONE_MEG) || (mode & BYTE_ACCESS_MODE))
 101                 bits = BYTE_OPERATION;
 102         else
 103                 bits = WORD_OPERATION;
 104
 105         /*
 106         ** Board has passed its scrub test. Fill in all the
 107         ** transient stuff.
 108         */
 109         p->RIOHosts[p->RIONumHosts].Caddr       = virtAddr;
 110         p->RIOHosts[p->RIONumHosts].CardP       = (struct DpRam *)virtAddr;
 111
 112         /*
 113         ** Revision 01 AT host cards don't support WORD operations,
 114         */
 115         if (readb(&cardp->DpRevision) == 01)
 116                 bits = BYTE_OPERATION;
 117
 118         p->RIOHosts[p->RIONumHosts].Type = RIO_AT;
 119         p->RIOHosts[p->RIONumHosts].Copy = rio_copy_to_card;
 120                                                                                         /* set this later */
 121         p->RIOHosts[p->RIONumHosts].Slot = -1;
 122         p->RIOHosts[p->RIONumHosts].Mode = SLOW_LINKS | SLOW_AT_BUS | bits;
 123         writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | p->RIOHosts[p->RIONumHosts].Mode | INTERRUPT_DISABLE ,
 124                 &p->RIOHosts[p->RIONumHosts].Control);
 125         writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt);
 126         writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | p->RIOHosts[p->RIONumHosts].Mode | INTERRUPT_DISABLE,
 127                 &p->RIOHosts[p->RIONumHosts].Control);
 128         writeb(0xFF, &p->RIOHosts[p->RIONumHosts].ResetInt);
 129         p->RIOHosts[p->RIONumHosts].UniqueNum =
 130                 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[0])&0xFF)<<0)|
 131                 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[1])&0xFF)<<8)|
 132                 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[2])&0xFF)<<16)|
 133                 ((readb(&p->RIOHosts[p->RIONumHosts].Unique[3])&0xFF)<<24);
 134         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Uniquenum 0x%x\n",p->RIOHosts[p->RIONumHosts].UniqueNum);
 135
 136         p->RIONumHosts++;
 137         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Tests Passed at 0x%x\n", Base);
 138         return(1);
 139 }
 140
 141 static  u8      val[] = {
 142 #ifdef VERY_LONG_TEST
 143           0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80,
 144           0xa5, 0xff, 0x5a, 0x00, 0xff, 0xc9, 0x36,
 145 #endif
 146           0xff, 0x00, 0x00 };
 147
 148 #define TEST_END sizeof(val)
 149
 150 /*
 151 ** RAM test a board.
 152 ** Nothing too complicated, just enough to check it out.
 153 */
 154 int RIOBoardTest(unsigned long paddr, caddr_t   caddr, unsigned char type, int slot)
 155 {
 156         struct DpRam *DpRam = (struct DpRam *)caddr;
 157         char *ram[4];
 158         int  size[4];
 159         int  op, bank;
 160         int  nbanks;
 161
 162         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Reset host type=%d, DpRam=%p, slot=%d\n",
 163                         type, DpRam, slot);
 164
 165         RIOHostReset(type, DpRam, slot);
 166
 167         /*
 168         ** Scrub the memory. This comes in several banks:
 169         ** DPsram1      - 7000h bytes
 170         ** DPsram2      - 200h  bytes
 171         ** DPsram3      - 7000h bytes
 172         ** scratch      - 1000h bytes
 173         */
 174
 175         rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Setup ram/size arrays\n");
 176
 177         size[0] = DP_SRAM1_SIZE;
 178         size[1] = DP_SRAM2_SIZE;
 179         size[2] = DP_SRAM3_SIZE;
 180         size[3] = DP_SCRATCH_SIZE;
 181
 182         ram[0] = (char *)&DpRam->DpSram1[0];
 183         ram[1] = (char *)&DpRam->DpSram2[0];
 184         ram[2] = (char *)&DpRam->DpSram3[0];
 185         nbanks = (type == RIO_PCI) ? 3 : 4;
 186         if (nbanks == 4)
 187                 ram[3] = (char *)&DpRam->DpScratch[0];
 188
 189
 190         if (nbanks == 3) {
 191                 rio_dprintk (RIO_DEBUG_INIT, "RIO-init: Memory: %p(0x%x), %p(0x%x), %p(0x%x)\n",
 192                                 ram[0], size[0], ram[1], size[1], ram[2], size[2]);
 193         } else {
 194                 rio_dprintk (RIO_DEBUG_INIT, "RIO-init: %p(0x%x), %p(0x%x), %p(0x%x), %p(0x%x)\n",
 195                                 ram[0], size[0], ram[1], size[1], ram[2], size[2], ram[3], size[3]);
 196         }
 197
 198         /*
 199         ** This scrub operation will test for crosstalk between
 200         ** banks. TEST_END is a magic number, and relates to the offset
 201         ** within the 'val' array used by Scrub.
 202         */
 203         for (op=0; op<TEST_END; op++) {
 204                 for (bank=0; bank<nbanks; bank++) {
 205                         if (RIOScrub(op, (u8 *)ram[bank], size[bank]) == RIO_FAIL) {
 206                                 rio_dprintk (RIO_DEBUG_INIT, "RIO-init: RIOScrub band %d, op %d failed\n",
 207                                                         bank, op);
 208                                 return RIO_FAIL;
 209                         }
 210                 }
 211         }
 212
 213         rio_dprintk (RIO_DEBUG_INIT, "Test completed\n");
 214         return 0;
 215 }
 216
 217
 218 /*
 219 ** Scrub an area of RAM.
 220 ** Define PRETEST and POSTTEST for a more thorough checking of the
 221 ** state of the memory.
 222 ** Call with op set to an index into the above 'val' array to determine
 223 ** which value will be written into memory.
 224 ** Call with op set to zero means that the RAM will not be read and checked
 225 ** before it is written.
 226 ** Call with op not zero, and the RAM will be read and compated with val[op-1]
 227 ** to check that the data from the previous phase was retained.
 228 */
 229
 230 static int RIOScrub(int op, u8 *ram, int size)
 231 {
 232         int off;
 233         unsigned char   oldbyte;
 234         unsigned char   newbyte;
 235         unsigned char   invbyte;
 236         unsigned short  oldword;
 237         unsigned short  newword;
 238         unsigned short  invword;
 239         unsigned short  swapword;
 240
 241         if (op) {
 242                 oldbyte = val[op-1];
 243                 oldword = oldbyte | (oldbyte<<8);
 244         } else
 245           oldbyte = oldword = 0; /* Tell the compiler we've initilalized them. */
 246         newbyte = val[op];
 247         newword = newbyte | (newbyte<<8);
 248         invbyte = ~newbyte;
 249         invword = invbyte | (invbyte<<8);
 250
 251         /*
 252         ** Check that the RAM contains the value that should have been left there
 253         ** by the previous test (not applicable for pass zero)
 254         */
 255         if (op) {
 256                 for (off=0; off<size; off++) {
 257                         if (readb(ram + off) != oldbyte) {
 258                                 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));
 259                                 return RIO_FAIL;
 260                         }
 261                 }
 262                 for (off=0; off<size; off+=2) {
 263                         if (readw(ram + off) != oldword) {
 264                                 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));
 265                                 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));
 266                                 return RIO_FAIL;
 267                         }
 268                 }
 269         }
 270
 271         /*
 272         ** Now write the INVERSE of the test data into every location, using
 273         ** BYTE write operations, first checking before each byte is written
 274         ** that the location contains the old value still, and checking after
 275         ** the write that the location contains the data specified - this is
 276         ** the BYTE read/write test.
 277         */
 278         for (off=0; off<size; off++) {
 279                 if (op && (readb(ram + off) != oldbyte)) {
 280                         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));
 281                         return RIO_FAIL;
 282                 }
 283                 writeb(invbyte, ram + off);
 284                 if (readb(ram + off) != invbyte) {
 285                         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));
 286                         return RIO_FAIL;
 287                 }
 288         }
 289
 290         /*
 291         ** now, use WORD operations to write the test value into every location,
 292         ** check as before that the location contains the previous test value
 293         ** before overwriting, and that it contains the data value written
 294         ** afterwards.
 295         ** This is the WORD operation test.
 296         */
 297         for (off=0; off<size; off+=2) {
 298                 if (readw(ram + off) != invword) {
 299                         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));
 300                         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));
 301                         return RIO_FAIL;
 302                 }
 303
 304                 writew(newword, ram + off);
 305                 if ( readw(ram + off) != newword ) {
 306                         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));
 307                         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));
 308                         return RIO_FAIL;
 309                 }
 310         }
 311
 312         /*
 313         ** now run through the block of memory again, first in byte mode
 314         ** then in word mode, and check that all the locations contain the
 315         ** required test data.
 316         */
 317         for (off=0; off<size; off++) {
 318                 if (readb(ram + off) != newbyte) {
 319                         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));
 320                         return RIO_FAIL;
 321                 }
 322         }
 323
 324         for (off=0; off<size; off+=2) {
 325                 if (readw(ram + off) != newword ) {
 326                         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));
 327                         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));
 328                         return RIO_FAIL;
 329                 }
 330         }
 331
 332         /*
 333         ** time to check out byte swapping errors
 334         */
 335         swapword = invbyte | (newbyte << 8);
 336
 337         for (off=0; off<size; off+=2) {
 338                 writeb(invbyte, &ram[off]);
 339                 writeb(newbyte, &ram[off+1]);
 340         }
 341
 342         for ( off=0; off<size; off+=2 ) {
 343                 if (readw(ram + off) != swapword) {
 344                         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));
 345                         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));
 346                         return RIO_FAIL;
 347                 }
 348                 writew(~swapword, ram + off);
 349         }
 350
 351         for (off=0; off<size; off+=2) {
 352                 if (readb(ram + off) != newbyte) {
 353                         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));
 354                         return RIO_FAIL;
 355                 }
 356                 if (readb(ram + off + 1) != invbyte) {
 357                         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));
 358                         return RIO_FAIL;
 359                 }
 360                 writew(newword, ram + off);
 361         }
 362         return 0;
 363 }
 364
 365
 366 int RIODefaultName(struct rio_info *p, struct Host *HostP, unsigned int UnitId)
 367 {
 368         memcpy(HostP->Mapping[UnitId].Name, "UNKNOWN RTA X-XX", 17);
 369         HostP->Mapping[UnitId].Name[12]='1'+(HostP-p->RIOHosts);
 370         if ((UnitId+1) > 9) {
 371                 HostP->Mapping[UnitId].Name[14]='0'+((UnitId+1)/10);
 372                 HostP->Mapping[UnitId].Name[15]='0'+((UnitId+1)%10);
 373         }
 374         else {
 375                 HostP->Mapping[UnitId].Name[14]='1'+UnitId;
 376                 HostP->Mapping[UnitId].Name[15]=0;
 377         }
 378         return 0;
 379 }
 380
 381 #define RIO_RELEASE     "Linux"
 382 #define RELEASE_ID      "1.0"
 383
 384 static struct rioVersion        stVersion;
 385
 386 struct rioVersion *RIOVersid(void)
 387 {
 388     strlcpy(stVersion.version, "RIO driver for linux V1.0",
 389             sizeof(stVersion.version));
 390     strlcpy(stVersion.buildDate, __DATE__,
 391             sizeof(stVersion.buildDate));
 392
 393     return &stVersion;
 394 }
 395
 396 void RIOHostReset(unsigned int Type, struct DpRam *DpRamP, unsigned int Slot)
 397 {
 398         /*
 399         ** Reset the Tpu
 400         */
 401         rio_dprintk (RIO_DEBUG_INIT,  "RIOHostReset: type 0x%x", Type);
 402         switch ( Type ) {
 403         case RIO_AT:
 404                 rio_dprintk (RIO_DEBUG_INIT, " (RIO_AT)\n");
 405                 writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | INTERRUPT_DISABLE | BYTE_OPERATION |
 406                         SLOW_LINKS | SLOW_AT_BUS, &DpRamP->DpControl);
 407                 writeb(0xFF, &DpRamP->DpResetTpu);
 408                 udelay(3);
 409                         rio_dprintk (RIO_DEBUG_INIT,  "RIOHostReset: Don't know if it worked. Try reset again\n");
 410                 writeb(BOOT_FROM_RAM | EXTERNAL_BUS_OFF | INTERRUPT_DISABLE |
 411                         BYTE_OPERATION | SLOW_LINKS | SLOW_AT_BUS, &DpRamP->DpControl);
 412                 writeb(0xFF, &DpRamP->DpResetTpu);
 413                 udelay(3);
 414                 break;
 415         case RIO_PCI:
 416                 rio_dprintk (RIO_DEBUG_INIT, " (RIO_PCI)\n");
 417                 writeb(RIO_PCI_BOOT_FROM_RAM, &DpRamP->DpControl);
 418                 writeb(0xFF, &DpRamP->DpResetInt);
 419                 writeb(0xFF, &DpRamP->DpResetTpu);
 420                 udelay(100);
 421                 break;
 422         default:
 423                 rio_dprintk (RIO_DEBUG_INIT, " (UNKNOWN)\n");
 424                 break;
 425         }
 426         return;
 427 }