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