git.oblomov.eu Git - linux-2.6/blob - drivers/scsi/sym53c8xx_2/sym_fw.c

   1 /*
   2  * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
   3  * of PCI-SCSI IO processors.
   4  *
   5  * Copyright (C) 1999-2001  Gerard Roudier <groudier@free.fr>
   6  *
   7  * This driver is derived from the Linux sym53c8xx driver.
   8  * Copyright (C) 1998-2000  Gerard Roudier
   9  *
  10  * The sym53c8xx driver is derived from the ncr53c8xx driver that had been
  11  * a port of the FreeBSD ncr driver to Linux-1.2.13.
  12  *
  13  * The original ncr driver has been written for 386bsd and FreeBSD by
  14  *         Wolfgang Stanglmeier        <wolf@cologne.de>
  15  *         Stefan Esser                <se@mi.Uni-Koeln.de>
  16  * Copyright (C) 1994  Wolfgang Stanglmeier
  17  *
  18  * Other major contributions:
  19  *
  20  * NVRAM detection and reading.
  21  * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
  22  *
  23  *-----------------------------------------------------------------------------
  24  *
  25  * This program is free software; you can redistribute it and/or modify
  26  * it under the terms of the GNU General Public License as published by
  27  * the Free Software Foundation; either version 2 of the License, or
  28  * (at your option) any later version.
  29  *
  30  * This program is distributed in the hope that it will be useful,
  31  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  32  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  33  * GNU General Public License for more details.
  34  *
  35  * You should have received a copy of the GNU General Public License
  36  * along with this program; if not, write to the Free Software
  37  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  38  */
  39
  40 #include "sym_glue.h"
  41
  42 /*
  43  *  Macros used for all firmwares.
  44  */
  45 #define SYM_GEN_A(s, label)     ((short) offsetof(s, label)),
  46 #define SYM_GEN_B(s, label)     ((short) offsetof(s, label)),
  47 #define SYM_GEN_Z(s, label)     ((short) offsetof(s, label)),
  48 #define PADDR_A(label)          SYM_GEN_PADDR_A(struct SYM_FWA_SCR, label)
  49 #define PADDR_B(label)          SYM_GEN_PADDR_B(struct SYM_FWB_SCR, label)
  50
  51
  52 #if     SYM_CONF_GENERIC_SUPPORT
  53 /*
  54  *  Allocate firmware #1 script area.
  55  */
  56 #define SYM_FWA_SCR             sym_fw1a_scr
  57 #define SYM_FWB_SCR             sym_fw1b_scr
  58 #define SYM_FWZ_SCR             sym_fw1z_scr
  59 #include "sym_fw1.h"
  60 static struct sym_fwa_ofs sym_fw1a_ofs = {
  61         SYM_GEN_FW_A(struct SYM_FWA_SCR)
  62 };
  63 static struct sym_fwb_ofs sym_fw1b_ofs = {
  64         SYM_GEN_FW_B(struct SYM_FWB_SCR)
  65 };
  66 static struct sym_fwz_ofs sym_fw1z_ofs = {
  67         SYM_GEN_FW_Z(struct SYM_FWZ_SCR)
  68 };
  69 #undef  SYM_FWA_SCR
  70 #undef  SYM_FWB_SCR
  71 #undef  SYM_FWZ_SCR
  72 #endif  /* SYM_CONF_GENERIC_SUPPORT */
  73
  74 /*
  75  *  Allocate firmware #2 script area.
  76  */
  77 #define SYM_FWA_SCR             sym_fw2a_scr
  78 #define SYM_FWB_SCR             sym_fw2b_scr
  79 #define SYM_FWZ_SCR             sym_fw2z_scr
  80 #include "sym_fw2.h"
  81 static struct sym_fwa_ofs sym_fw2a_ofs = {
  82         SYM_GEN_FW_A(struct SYM_FWA_SCR)
  83 };
  84 static struct sym_fwb_ofs sym_fw2b_ofs = {
  85         SYM_GEN_FW_B(struct SYM_FWB_SCR)
  86         SYM_GEN_B(struct SYM_FWB_SCR, start64)
  87         SYM_GEN_B(struct SYM_FWB_SCR, pm_handle)
  88 };
  89 static struct sym_fwz_ofs sym_fw2z_ofs = {
  90         SYM_GEN_FW_Z(struct SYM_FWZ_SCR)
  91 };
  92 #undef  SYM_FWA_SCR
  93 #undef  SYM_FWB_SCR
  94 #undef  SYM_FWZ_SCR
  95
  96 #undef  SYM_GEN_A
  97 #undef  SYM_GEN_B
  98 #undef  SYM_GEN_Z
  99 #undef  PADDR_A
 100 #undef  PADDR_B
 101
 102 #if     SYM_CONF_GENERIC_SUPPORT
 103 /*
 104  *  Patch routine for firmware #1.
 105  */
 106 static void
 107 sym_fw1_patch(struct sym_hcb *np)
 108 {
 109         struct sym_fw1a_scr *scripta0;
 110         struct sym_fw1b_scr *scriptb0;
 111
 112         scripta0 = (struct sym_fw1a_scr *) np->scripta0;
 113         scriptb0 = (struct sym_fw1b_scr *) np->scriptb0;
 114
 115         /*
 116          *  Remove LED support if not needed.
 117          */
 118         if (!(np->features & FE_LED0)) {
 119                 scripta0->idle[0]       = cpu_to_scr(SCR_NO_OP);
 120                 scripta0->reselected[0] = cpu_to_scr(SCR_NO_OP);
 121                 scripta0->start[0]      = cpu_to_scr(SCR_NO_OP);
 122         }
 123
 124 #ifdef SYM_CONF_IARB_SUPPORT
 125         /*
 126          *    If user does not want to use IMMEDIATE ARBITRATION
 127          *    when we are reselected while attempting to arbitrate,
 128          *    patch the SCRIPTS accordingly with a SCRIPT NO_OP.
 129          */
 130         if (!SYM_CONF_SET_IARB_ON_ARB_LOST)
 131                 scripta0->ungetjob[0] = cpu_to_scr(SCR_NO_OP);
 132 #endif
 133         /*
 134          *  Patch some data in SCRIPTS.
 135          *  - start and done queue initial bus address.
 136          *  - target bus address table bus address.
 137          */
 138         scriptb0->startpos[0]   = cpu_to_scr(np->squeue_ba);
 139         scriptb0->done_pos[0]   = cpu_to_scr(np->dqueue_ba);
 140         scriptb0->targtbl[0]    = cpu_to_scr(np->targtbl_ba);
 141 }
 142 #endif  /* SYM_CONF_GENERIC_SUPPORT */
 143
 144 /*
 145  *  Patch routine for firmware #2.
 146  */
 147 static void
 148 sym_fw2_patch(struct sym_hcb *np)
 149 {
 150         struct sym_fw2a_scr *scripta0;
 151         struct sym_fw2b_scr *scriptb0;
 152
 153         scripta0 = (struct sym_fw2a_scr *) np->scripta0;
 154         scriptb0 = (struct sym_fw2b_scr *) np->scriptb0;
 155
 156         /*
 157          *  Remove LED support if not needed.
 158          */
 159         if (!(np->features & FE_LED0)) {
 160                 scripta0->idle[0]       = cpu_to_scr(SCR_NO_OP);
 161                 scripta0->reselected[0] = cpu_to_scr(SCR_NO_OP);
 162                 scripta0->start[0]      = cpu_to_scr(SCR_NO_OP);
 163         }
 164
 165 #if   SYM_CONF_DMA_ADDRESSING_MODE == 2
 166         /*
 167          *  Remove useless 64 bit DMA specific SCRIPTS,
 168          *  when this feature is not available.
 169          */
 170         if (!np->use_dac) {
 171                 scripta0->is_dmap_dirty[0] = cpu_to_scr(SCR_NO_OP);
 172                 scripta0->is_dmap_dirty[1] = 0;
 173                 scripta0->is_dmap_dirty[2] = cpu_to_scr(SCR_NO_OP);
 174                 scripta0->is_dmap_dirty[3] = 0;
 175         }
 176 #endif
 177
 178 #ifdef SYM_CONF_IARB_SUPPORT
 179         /*
 180          *    If user does not want to use IMMEDIATE ARBITRATION
 181          *    when we are reselected while attempting to arbitrate,
 182          *    patch the SCRIPTS accordingly with a SCRIPT NO_OP.
 183          */
 184         if (!SYM_CONF_SET_IARB_ON_ARB_LOST)
 185                 scripta0->ungetjob[0] = cpu_to_scr(SCR_NO_OP);
 186 #endif
 187         /*
 188          *  Patch some variable in SCRIPTS.
 189          *  - start and done queue initial bus address.
 190          *  - target bus address table bus address.
 191          */
 192         scriptb0->startpos[0]   = cpu_to_scr(np->squeue_ba);
 193         scriptb0->done_pos[0]   = cpu_to_scr(np->dqueue_ba);
 194         scriptb0->targtbl[0]    = cpu_to_scr(np->targtbl_ba);
 195
 196         /*
 197          *  Remove the load of SCNTL4 on reselection if not a C10.
 198          */
 199         if (!(np->features & FE_C10)) {
 200                 scripta0->resel_scntl4[0] = cpu_to_scr(SCR_NO_OP);
 201                 scripta0->resel_scntl4[1] = cpu_to_scr(0);
 202         }
 203
 204         /*
 205          *  Remove a couple of work-arounds specific to C1010 if
 206          *  they are not desirable. See `sym_fw2.h' for more details.
 207          */
 208         if (!(np->device_id == PCI_DEVICE_ID_LSI_53C1010_66 &&
 209               np->revision_id < 0x1 &&
 210               np->pciclk_khz < 60000)) {
 211                 scripta0->datao_phase[0] = cpu_to_scr(SCR_NO_OP);
 212                 scripta0->datao_phase[1] = cpu_to_scr(0);
 213         }
 214         if (!(np->device_id == PCI_DEVICE_ID_LSI_53C1010_33 &&
 215               /* np->revision_id < 0xff */ 1)) {
 216                 scripta0->sel_done[0] = cpu_to_scr(SCR_NO_OP);
 217                 scripta0->sel_done[1] = cpu_to_scr(0);
 218         }
 219
 220         /*
 221          *  Patch some other variables in SCRIPTS.
 222          *  These ones are loaded by the SCRIPTS processor.
 223          */
 224         scriptb0->pm0_data_addr[0] =
 225                 cpu_to_scr(np->scripta_ba +
 226                            offsetof(struct sym_fw2a_scr, pm0_data));
 227         scriptb0->pm1_data_addr[0] =
 228                 cpu_to_scr(np->scripta_ba +
 229                            offsetof(struct sym_fw2a_scr, pm1_data));
 230 }
 231
 232 /*
 233  *  Fill the data area in scripts.
 234  *  To be done for all firmwares.
 235  */
 236 static void
 237 sym_fw_fill_data (u32 *in, u32 *out)
 238 {
 239         int     i;
 240
 241         for (i = 0; i < SYM_CONF_MAX_SG; i++) {
 242                 *in++  = SCR_CHMOV_TBL ^ SCR_DATA_IN;
 243                 *in++  = offsetof (struct sym_dsb, data[i]);
 244                 *out++ = SCR_CHMOV_TBL ^ SCR_DATA_OUT;
 245                 *out++ = offsetof (struct sym_dsb, data[i]);
 246         }
 247 }
 248
 249 /*
 250  *  Setup useful script bus addresses.
 251  *  To be done for all firmwares.
 252  */
 253 static void
 254 sym_fw_setup_bus_addresses(struct sym_hcb *np, struct sym_fw *fw)
 255 {
 256         u32 *pa;
 257         u_short *po;
 258         int i;
 259
 260         /*
 261          *  Build the bus address table for script A
 262          *  from the script A offset table.
 263          */
 264         po = (u_short *) fw->a_ofs;
 265         pa = (u32 *) &np->fwa_bas;
 266         for (i = 0 ; i < sizeof(np->fwa_bas)/sizeof(u32) ; i++)
 267                 pa[i] = np->scripta_ba + po[i];
 268
 269         /*
 270          *  Same for script B.
 271          */
 272         po = (u_short *) fw->b_ofs;
 273         pa = (u32 *) &np->fwb_bas;
 274         for (i = 0 ; i < sizeof(np->fwb_bas)/sizeof(u32) ; i++)
 275                 pa[i] = np->scriptb_ba + po[i];
 276
 277         /*
 278          *  Same for script Z.
 279          */
 280         po = (u_short *) fw->z_ofs;
 281         pa = (u32 *) &np->fwz_bas;
 282         for (i = 0 ; i < sizeof(np->fwz_bas)/sizeof(u32) ; i++)
 283                 pa[i] = np->scriptz_ba + po[i];
 284 }
 285
 286 #if     SYM_CONF_GENERIC_SUPPORT
 287 /*
 288  *  Setup routine for firmware #1.
 289  */
 290 static void
 291 sym_fw1_setup(struct sym_hcb *np, struct sym_fw *fw)
 292 {
 293         struct sym_fw1a_scr *scripta0;
 294         struct sym_fw1b_scr *scriptb0;
 295
 296         scripta0 = (struct sym_fw1a_scr *) np->scripta0;
 297         scriptb0 = (struct sym_fw1b_scr *) np->scriptb0;
 298
 299         /*
 300          *  Fill variable parts in scripts.
 301          */
 302         sym_fw_fill_data(scripta0->data_in, scripta0->data_out);
 303
 304         /*
 305          *  Setup bus addresses used from the C code..
 306          */
 307         sym_fw_setup_bus_addresses(np, fw);
 308 }
 309 #endif  /* SYM_CONF_GENERIC_SUPPORT */
 310
 311 /*
 312  *  Setup routine for firmware #2.
 313  */
 314 static void
 315 sym_fw2_setup(struct sym_hcb *np, struct sym_fw *fw)
 316 {
 317         struct sym_fw2a_scr *scripta0;
 318         struct sym_fw2b_scr *scriptb0;
 319
 320         scripta0 = (struct sym_fw2a_scr *) np->scripta0;
 321         scriptb0 = (struct sym_fw2b_scr *) np->scriptb0;
 322
 323         /*
 324          *  Fill variable parts in scripts.
 325          */
 326         sym_fw_fill_data(scripta0->data_in, scripta0->data_out);
 327
 328         /*
 329          *  Setup bus addresses used from the C code..
 330          */
 331         sym_fw_setup_bus_addresses(np, fw);
 332 }
 333
 334 /*
 335  *  Allocate firmware descriptors.
 336  */
 337 #if     SYM_CONF_GENERIC_SUPPORT
 338 static struct sym_fw sym_fw1 = SYM_FW_ENTRY(sym_fw1, "NCR-generic");
 339 #endif  /* SYM_CONF_GENERIC_SUPPORT */
 340 static struct sym_fw sym_fw2 = SYM_FW_ENTRY(sym_fw2, "LOAD/STORE-based");
 341
 342 /*
 343  *  Find the most appropriate firmware for a chip.
 344  */
 345 struct sym_fw *
 346 sym_find_firmware(struct sym_chip *chip)
 347 {
 348         if (chip->features & FE_LDSTR)
 349                 return &sym_fw2;
 350 #if     SYM_CONF_GENERIC_SUPPORT
 351         else if (!(chip->features & (FE_PFEN|FE_NOPM|FE_DAC)))
 352                 return &sym_fw1;
 353 #endif
 354         else
 355                 return NULL;
 356 }
 357
 358 /*
 359  *  Bind a script to physical addresses.
 360  */
 361 void sym_fw_bind_script(struct sym_hcb *np, u32 *start, int len)
 362 {
 363         u32 opcode, new, old, tmp1, tmp2;
 364         u32 *end, *cur;
 365         int relocs;
 366
 367         cur = start;
 368         end = start + len/4;
 369
 370         while (cur < end) {
 371
 372                 opcode = *cur;
 373
 374                 /*
 375                  *  If we forget to change the length
 376                  *  in scripts, a field will be
 377                  *  padded with 0. This is an illegal
 378                  *  command.
 379                  */
 380                 if (opcode == 0) {
 381                         printf ("%s: ERROR0 IN SCRIPT at %d.\n",
 382                                 sym_name(np), (int) (cur-start));
 383                         ++cur;
 384                         continue;
 385                 };
 386
 387                 /*
 388                  *  We use the bogus value 0xf00ff00f ;-)
 389                  *  to reserve data area in SCRIPTS.
 390                  */
 391                 if (opcode == SCR_DATA_ZERO) {
 392                         *cur++ = 0;
 393                         continue;
 394                 }
 395
 396                 if (DEBUG_FLAGS & DEBUG_SCRIPT)
 397                         printf ("%d:  <%x>\n", (int) (cur-start),
 398                                 (unsigned)opcode);
 399
 400                 /*
 401                  *  We don't have to decode ALL commands
 402                  */
 403                 switch (opcode >> 28) {
 404                 case 0xf:
 405                         /*
 406                          *  LOAD / STORE DSA relative, don't relocate.
 407                          */
 408                         relocs = 0;
 409                         break;
 410                 case 0xe:
 411                         /*
 412                          *  LOAD / STORE absolute.
 413                          */
 414                         relocs = 1;
 415                         break;
 416                 case 0xc:
 417                         /*
 418                          *  COPY has TWO arguments.
 419                          */
 420                         relocs = 2;
 421                         tmp1 = cur[1];
 422                         tmp2 = cur[2];
 423                         if ((tmp1 ^ tmp2) & 3) {
 424                                 printf ("%s: ERROR1 IN SCRIPT at %d.\n",
 425                                         sym_name(np), (int) (cur-start));
 426                         }
 427                         /*
 428                          *  If PREFETCH feature not enabled, remove
 429                          *  the NO FLUSH bit if present.
 430                          */
 431                         if ((opcode & SCR_NO_FLUSH) &&
 432                             !(np->features & FE_PFEN)) {
 433                                 opcode = (opcode & ~SCR_NO_FLUSH);
 434                         }
 435                         break;
 436                 case 0x0:
 437                         /*
 438                          *  MOVE/CHMOV (absolute address)
 439                          */
 440                         if (!(np->features & FE_WIDE))
 441                                 opcode = (opcode | OPC_MOVE);
 442                         relocs = 1;
 443                         break;
 444                 case 0x1:
 445                         /*
 446                          *  MOVE/CHMOV (table indirect)
 447                          */
 448                         if (!(np->features & FE_WIDE))
 449                                 opcode = (opcode | OPC_MOVE);
 450                         relocs = 0;
 451                         break;
 452 #ifdef SYM_CONF_TARGET_ROLE_SUPPORT
 453                 case 0x2:
 454                         /*
 455                          *  MOVE/CHMOV in target role (absolute address)
 456                          */
 457                         opcode &= ~0x20000000;
 458                         if (!(np->features & FE_WIDE))
 459                                 opcode = (opcode & ~OPC_TCHMOVE);
 460                         relocs = 1;
 461                         break;
 462                 case 0x3:
 463                         /*
 464                          *  MOVE/CHMOV in target role (table indirect)
 465                          */
 466                         opcode &= ~0x20000000;
 467                         if (!(np->features & FE_WIDE))
 468                                 opcode = (opcode & ~OPC_TCHMOVE);
 469                         relocs = 0;
 470                         break;
 471 #endif
 472                 case 0x8:
 473                         /*
 474                          *  JUMP / CALL
 475                          *  don't relocate if relative :-)
 476                          */
 477                         if (opcode & 0x00800000)
 478                                 relocs = 0;
 479                         else if ((opcode & 0xf8400000) == 0x80400000)/*JUMP64*/
 480                                 relocs = 2;
 481                         else
 482                                 relocs = 1;
 483                         break;
 484                 case 0x4:
 485                 case 0x5:
 486                 case 0x6:
 487                 case 0x7:
 488                         relocs = 1;
 489                         break;
 490                 default:
 491                         relocs = 0;
 492                         break;
 493                 };
 494
 495                 /*
 496                  *  Scriptify:) the opcode.
 497                  */
 498                 *cur++ = cpu_to_scr(opcode);
 499
 500                 /*
 501                  *  If no relocation, assume 1 argument
 502                  *  and just scriptize:) it.
 503                  */
 504                 if (!relocs) {
 505                         *cur = cpu_to_scr(*cur);
 506                         ++cur;
 507                         continue;
 508                 }
 509
 510                 /*
 511                  *  Otherwise performs all needed relocations.
 512                  */
 513                 while (relocs--) {
 514                         old = *cur;
 515
 516                         switch (old & RELOC_MASK) {
 517                         case RELOC_REGISTER:
 518                                 new = (old & ~RELOC_MASK) + np->mmio_ba;
 519                                 break;
 520                         case RELOC_LABEL_A:
 521                                 new = (old & ~RELOC_MASK) + np->scripta_ba;
 522                                 break;
 523                         case RELOC_LABEL_B:
 524                                 new = (old & ~RELOC_MASK) + np->scriptb_ba;
 525                                 break;
 526                         case RELOC_SOFTC:
 527                                 new = (old & ~RELOC_MASK) + np->hcb_ba;
 528                                 break;
 529                         case 0:
 530                                 /*
 531                                  *  Don't relocate a 0 address.
 532                                  *  They are mostly used for patched or
 533                                  *  script self-modified areas.
 534                                  */
 535                                 if (old == 0) {
 536                                         new = old;
 537                                         break;
 538                                 }
 539                                 /* fall through */
 540                         default:
 541                                 new = 0;
 542                                 panic("sym_fw_bind_script: "
 543                                       "weird relocation %x\n", old);
 544                                 break;
 545                         }
 546
 547                         *cur++ = cpu_to_scr(new);
 548                 }
 549         };
 550 }