arch/x86/kernel/es7000_32.c

   1 /*
   2  * Written by: Garry Forsgren, Unisys Corporation
   3  *             Natalie Protasevich, Unisys Corporation
   4  * This file contains the code to configure and interface
   5  * with Unisys ES7000 series hardware system manager.
   6  *
   7  * Copyright (c) 2003 Unisys Corporation.  All Rights Reserved.
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of version 2 of the GNU General Public License as
  11  * published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it would be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write the Free Software Foundation, Inc., 59
  19  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  20  *
  21  * Contact information: Unisys Corporation, Township Line & Union Meeting
  22  * Roads-A, Unisys Way, Blue Bell, Pennsylvania, 19424, or:
  23  *
  24  * http://www.unisys.com
  25  */
  26
  27 #include <linux/module.h>
  28 #include <linux/types.h>
  29 #include <linux/kernel.h>
  30 #include <linux/smp.h>
  31 #include <linux/string.h>
  32 #include <linux/spinlock.h>
  33 #include <linux/errno.h>
  34 #include <linux/notifier.h>
  35 #include <linux/reboot.h>
  36 #include <linux/init.h>
  37 #include <linux/acpi.h>
  38 #include <asm/io.h>
  39 #include <asm/nmi.h>
  40 #include <asm/smp.h>
  41 #include <asm/atomic.h>
  42 #include <asm/apicdef.h>
  43 #include <asm/genapic.h>
  44 #include <asm/setup.h>
  45
  46 /*
  47  * ES7000 chipsets
  48  */
  49
  50 #define NON_UNISYS              0
  51 #define ES7000_CLASSIC          1
  52 #define ES7000_ZORRO            2
  53
  54
  55 #define MIP_REG                 1
  56 #define MIP_PSAI_REG            4
  57
  58 #define MIP_BUSY                1
  59 #define MIP_SPIN                0xf0000
  60 #define MIP_VALID               0x0100000000000000ULL
  61 #define MIP_PORT(VALUE) ((VALUE >> 32) & 0xffff)
  62
  63 #define MIP_RD_LO(VALUE)        (VALUE & 0xffffffff)
  64
  65 struct mip_reg_info {
  66         unsigned long long mip_info;
  67         unsigned long long delivery_info;
  68         unsigned long long host_reg;
  69         unsigned long long mip_reg;
  70 };
  71
  72 struct part_info {
  73         unsigned char type;
  74         unsigned char length;
  75         unsigned char part_id;
  76         unsigned char apic_mode;
  77         unsigned long snum;
  78         char ptype[16];
  79         char sname[64];
  80         char pname[64];
  81 };
  82
  83 struct psai {
  84         unsigned long long entry_type;
  85         unsigned long long addr;
  86         unsigned long long bep_addr;
  87 };
  88
  89 struct es7000_mem_info {
  90         unsigned char type;
  91         unsigned char length;
  92         unsigned char resv[6];
  93         unsigned long long  start;
  94         unsigned long long  size;
  95 };
  96
  97 struct es7000_oem_table {
  98         unsigned long long hdr;
  99         struct mip_reg_info mip;
 100         struct part_info pif;
 101         struct es7000_mem_info shm;
 102         struct psai psai;
 103 };
 104
 105 #ifdef CONFIG_ACPI
 106
 107 struct oem_table {
 108         struct acpi_table_header Header;
 109         u32 OEMTableAddr;
 110         u32 OEMTableSize;
 111 };
 112
 113 extern int find_unisys_acpi_oem_table(unsigned long *oem_addr);
 114 extern void unmap_unisys_acpi_oem_table(unsigned long oem_addr);
 115 #endif
 116
 117 struct mip_reg {
 118         unsigned long long off_0;
 119         unsigned long long off_8;
 120         unsigned long long off_10;
 121         unsigned long long off_18;
 122         unsigned long long off_20;
 123         unsigned long long off_28;
 124         unsigned long long off_30;
 125         unsigned long long off_38;
 126 };
 127
 128 #define MIP_SW_APIC             0x1020b
 129 #define MIP_FUNC(VALUE)         (VALUE & 0xff)
 130
 131 /*
 132  * ES7000 Globals
 133  */
 134
 135 static volatile unsigned long   *psai = NULL;
 136 static struct mip_reg           *mip_reg;
 137 static struct mip_reg           *host_reg;
 138 static int                      mip_port;
 139 static unsigned long            mip_addr, host_addr;
 140
 141 int es7000_plat;
 142
 143 /*
 144  * GSI override for ES7000 platforms.
 145  */
 146
 147 static unsigned int base;
 148
 149 static int
 150 es7000_rename_gsi(int ioapic, int gsi)
 151 {
 152         if (es7000_plat == ES7000_ZORRO)
 153                 return gsi;
 154
 155         if (!base) {
 156                 int i;
 157                 for (i = 0; i < nr_ioapics; i++)
 158                         base += nr_ioapic_registers[i];
 159         }
 160
 161         if (!ioapic && (gsi < 16))
 162                 gsi += base;
 163         return gsi;
 164 }
 165
 166 static int wakeup_secondary_cpu_via_mip(int cpu, unsigned long eip)
 167 {
 168         unsigned long vect = 0, psaival = 0;
 169
 170         if (psai == NULL)
 171                 return -1;
 172
 173         vect = ((unsigned long)__pa(eip)/0x1000) << 16;
 174         psaival = (0x1000000 | vect | cpu);
 175
 176         while (*psai & 0x1000000)
 177                 ;
 178
 179         *psai = psaival;
 180
 181         return 0;
 182 }
 183
 184 static int __init es7000_update_genapic(void)
 185 {
 186         apic->wakeup_cpu = wakeup_secondary_cpu_via_mip;
 187
 188         /* MPENTIUMIII */
 189         if (boot_cpu_data.x86 == 6 &&
 190             (boot_cpu_data.x86_model >= 7 || boot_cpu_data.x86_model <= 11)) {
 191                 es7000_update_genapic_to_cluster();
 192                 apic->wait_for_init_deassert = NULL;
 193                 apic->wakeup_cpu = wakeup_secondary_cpu_via_mip;
 194         }
 195
 196         return 0;
 197 }
 198
 199 void __init
 200 setup_unisys(void)
 201 {
 202         /*
 203          * Determine the generation of the ES7000 currently running.
 204          *
 205          * es7000_plat = 1 if the machine is a 5xx ES7000 box
 206          * es7000_plat = 2 if the machine is a x86_64 ES7000 box
 207          *
 208          */
 209         if (!(boot_cpu_data.x86 <= 15 && boot_cpu_data.x86_model <= 2))
 210                 es7000_plat = ES7000_ZORRO;
 211         else
 212                 es7000_plat = ES7000_CLASSIC;
 213         ioapic_renumber_irq = es7000_rename_gsi;
 214
 215         x86_quirks->update_genapic = es7000_update_genapic;
 216 }
 217
 218 /*
 219  * Parse the OEM Table
 220  */
 221
 222 int __init
 223 parse_unisys_oem (char *oemptr)
 224 {
 225         int                     i;
 226         int                     success = 0;
 227         unsigned char           type, size;
 228         unsigned long           val;
 229         char                    *tp = NULL;
 230         struct psai             *psaip = NULL;
 231         struct mip_reg_info     *mi;
 232         struct mip_reg          *host, *mip;
 233
 234         tp = oemptr;
 235
 236         tp += 8;
 237
 238         for (i=0; i <= 6; i++) {
 239                 type = *tp++;
 240                 size = *tp++;
 241                 tp -= 2;
 242                 switch (type) {
 243                 case MIP_REG:
 244                         mi = (struct mip_reg_info *)tp;
 245                         val = MIP_RD_LO(mi->host_reg);
 246                         host_addr = val;
 247                         host = (struct mip_reg *)val;
 248                         host_reg = __va(host);
 249                         val = MIP_RD_LO(mi->mip_reg);
 250                         mip_port = MIP_PORT(mi->mip_info);
 251                         mip_addr = val;
 252                         mip = (struct mip_reg *)val;
 253                         mip_reg = __va(mip);
 254                         pr_debug("es7000_mipcfg: host_reg = 0x%lx \n",
 255                                  (unsigned long)host_reg);
 256                         pr_debug("es7000_mipcfg: mip_reg = 0x%lx \n",
 257                                  (unsigned long)mip_reg);
 258                         success++;
 259                         break;
 260                 case MIP_PSAI_REG:
 261                         psaip = (struct psai *)tp;
 262                         if (tp != NULL) {
 263                                 if (psaip->addr)
 264                                         psai = __va(psaip->addr);
 265                                 else
 266                                         psai = NULL;
 267                                 success++;
 268                         }
 269                         break;
 270                 default:
 271                         break;
 272                 }
 273                 tp += size;
 274         }
 275
 276         if (success < 2) {
 277                 es7000_plat = NON_UNISYS;
 278         } else
 279                 setup_unisys();
 280         return es7000_plat;
 281 }
 282
 283 #ifdef CONFIG_ACPI
 284 static unsigned long oem_addrX;
 285 static unsigned long oem_size;
 286 int __init find_unisys_acpi_oem_table(unsigned long *oem_addr)
 287 {
 288         struct acpi_table_header *header = NULL;
 289         int i = 0;
 290
 291         while (ACPI_SUCCESS(acpi_get_table("OEM1", i++, &header))) {
 292                 if (!memcmp((char *) &header->oem_id, "UNISYS", 6)) {
 293                         struct oem_table *t = (struct oem_table *)header;
 294
 295                         oem_addrX = t->OEMTableAddr;
 296                         oem_size = t->OEMTableSize;
 297
 298                         *oem_addr = (unsigned long)__acpi_map_table(oem_addrX,
 299                                                                     oem_size);
 300                         return 0;
 301                 }
 302         }
 303         return -1;
 304 }
 305
 306 void __init unmap_unisys_acpi_oem_table(unsigned long oem_addr)
 307 {
 308 }
 309 #endif
 310
 311 static void
 312 es7000_spin(int n)
 313 {
 314         int i = 0;
 315
 316         while (i++ < n)
 317                 rep_nop();
 318 }
 319
 320 static int __init
 321 es7000_mip_write(struct mip_reg *mip_reg)
 322 {
 323         int                     status = 0;
 324         int                     spin;
 325
 326         spin = MIP_SPIN;
 327         while (((unsigned long long)host_reg->off_38 &
 328                 (unsigned long long)MIP_VALID) != 0) {
 329                         if (--spin <= 0) {
 330                                 printk("es7000_mip_write: Timeout waiting for Host Valid Flag");
 331                                 return -1;
 332                         }
 333                 es7000_spin(MIP_SPIN);
 334         }
 335
 336         memcpy(host_reg, mip_reg, sizeof(struct mip_reg));
 337         outb(1, mip_port);
 338
 339         spin = MIP_SPIN;
 340
 341         while (((unsigned long long)mip_reg->off_38 &
 342                 (unsigned long long)MIP_VALID) == 0) {
 343                 if (--spin <= 0) {
 344                         printk("es7000_mip_write: Timeout waiting for MIP Valid Flag");
 345                         return -1;
 346                 }
 347                 es7000_spin(MIP_SPIN);
 348         }
 349
 350         status = ((unsigned long long)mip_reg->off_0 &
 351                 (unsigned long long)0xffff0000000000ULL) >> 48;
 352         mip_reg->off_38 = ((unsigned long long)mip_reg->off_38 &
 353                 (unsigned long long)~MIP_VALID);
 354         return status;
 355 }
 356
 357 void __init es7000_enable_apic_mode(void)
 358 {
 359         struct mip_reg es7000_mip_reg;
 360         int mip_status;
 361
 362         if (!es7000_plat)
 363                 return;
 364
 365         printk("ES7000: Enabling APIC mode.\n");
 366         memset(&es7000_mip_reg, 0, sizeof(struct mip_reg));
 367         es7000_mip_reg.off_0 = MIP_SW_APIC;
 368         es7000_mip_reg.off_38 = MIP_VALID;
 369
 370         while ((mip_status = es7000_mip_write(&es7000_mip_reg)) != 0) {
 371                 printk("es7000_enable_apic_mode: command failed, status = %x\n",
 372                         mip_status);
 373         }
 374 }
 375
 376 /*
 377  * APIC driver for the Unisys ES7000 chipset.
 378  */
 379 #define APIC_DEFINITION 1
 380 #include <linux/threads.h>
 381 #include <linux/cpumask.h>
 382 #include <asm/mpspec.h>
 383 #include <asm/genapic.h>
 384 #include <asm/fixmap.h>
 385 #include <asm/apicdef.h>
 386 #include <linux/kernel.h>
 387 #include <linux/string.h>
 388 #include <linux/init.h>
 389 #include <linux/acpi.h>
 390 #include <linux/smp.h>
 391 #include <asm/ipi.h>
 392
 393 #define APIC_DFR_VALUE_CLUSTER          (APIC_DFR_CLUSTER)
 394 #define INT_DELIVERY_MODE_CLUSTER       (dest_LowestPrio)
 395 #define INT_DEST_MODE_CLUSTER           (1) /* logical delivery broadcast to all procs */
 396
 397 #define APIC_DFR_VALUE                  (APIC_DFR_FLAT)
 398
 399 extern void es7000_enable_apic_mode(void);
 400 extern int apic_version [MAX_APICS];
 401 extern u8 cpu_2_logical_apicid[];
 402 extern unsigned int boot_cpu_physical_apicid;
 403
 404 extern int parse_unisys_oem (char *oemptr);
 405 extern int find_unisys_acpi_oem_table(unsigned long *oem_addr);
 406 extern void unmap_unisys_acpi_oem_table(unsigned long oem_addr);
 407 extern void setup_unisys(void);
 408
 409 #define apicid_cluster(apicid)          (apicid & 0xF0)
 410 #define xapic_phys_to_log_apicid(cpu)   per_cpu(x86_bios_cpu_apicid, cpu)
 411
 412 static void es7000_vector_allocation_domain(int cpu, cpumask_t *retmask)
 413 {
 414         /* Careful. Some cpus do not strictly honor the set of cpus
 415          * specified in the interrupt destination when using lowest
 416          * priority interrupt delivery mode.
 417          *
 418          * In particular there was a hyperthreading cpu observed to
 419          * deliver interrupts to the wrong hyperthread when only one
 420          * hyperthread was specified in the interrupt desitination.
 421          */
 422         *retmask = (cpumask_t){ { [0] = APIC_ALL_CPUS, } };
 423 }
 424
 425
 426 static void es7000_wait_for_init_deassert(atomic_t *deassert)
 427 {
 428 #ifndef CONFIG_ES7000_CLUSTERED_APIC
 429         while (!atomic_read(deassert))
 430                 cpu_relax();
 431 #endif
 432         return;
 433 }
 434
 435 static unsigned int es7000_get_apic_id(unsigned long x)
 436 {
 437         return (x >> 24) & 0xFF;
 438 }
 439
 440 #ifdef CONFIG_ACPI
 441 static int es7000_check_dsdt(void)
 442 {
 443         struct acpi_table_header header;
 444
 445         if (ACPI_SUCCESS(acpi_get_table_header(ACPI_SIG_DSDT, 0, &header)) &&
 446             !strncmp(header.oem_id, "UNISYS", 6))
 447                 return 1;
 448         return 0;
 449 }
 450 #endif
 451
 452 static void es7000_send_IPI_mask(const struct cpumask *mask, int vector)
 453 {
 454         default_send_IPI_mask_sequence_phys(mask, vector);
 455 }
 456
 457 static void es7000_send_IPI_allbutself(int vector)
 458 {
 459         default_send_IPI_mask_allbutself_phys(cpu_online_mask, vector);
 460 }
 461
 462 static void es7000_send_IPI_all(int vector)
 463 {
 464         es7000_send_IPI_mask(cpu_online_mask, vector);
 465 }
 466
 467 static int es7000_apic_id_registered(void)
 468 {
 469                 return 1;
 470 }
 471
 472 static const cpumask_t *target_cpus_cluster(void)
 473 {
 474         return &CPU_MASK_ALL;
 475 }
 476
 477 static const cpumask_t *es7000_target_cpus(void)
 478 {
 479         return &cpumask_of_cpu(smp_processor_id());
 480 }
 481
 482 static unsigned long
 483 es7000_check_apicid_used(physid_mask_t bitmap, int apicid)
 484 {
 485         return 0;
 486 }
 487 static unsigned long es7000_check_apicid_present(int bit)
 488 {
 489         return physid_isset(bit, phys_cpu_present_map);
 490 }
 491
 492 static unsigned long calculate_ldr(int cpu)
 493 {
 494         unsigned long id = xapic_phys_to_log_apicid(cpu);
 495
 496         return (SET_APIC_LOGICAL_ID(id));
 497 }
 498
 499 /*
 500  * Set up the logical destination ID.
 501  *
 502  * Intel recommends to set DFR, LdR and TPR before enabling
 503  * an APIC.  See e.g. "AP-388 82489DX User's Manual" (Intel
 504  * document number 292116).  So here it goes...
 505  */
 506 static void es7000_init_apic_ldr_cluster(void)
 507 {
 508         unsigned long val;
 509         int cpu = smp_processor_id();
 510
 511         apic_write(APIC_DFR, APIC_DFR_VALUE_CLUSTER);
 512         val = calculate_ldr(cpu);
 513         apic_write(APIC_LDR, val);
 514 }
 515
 516 static void es7000_init_apic_ldr(void)
 517 {
 518         unsigned long val;
 519         int cpu = smp_processor_id();
 520
 521         apic_write(APIC_DFR, APIC_DFR_VALUE);
 522         val = calculate_ldr(cpu);
 523         apic_write(APIC_LDR, val);
 524 }
 525
 526 static void es7000_setup_apic_routing(void)
 527 {
 528         int apic = per_cpu(x86_bios_cpu_apicid, smp_processor_id());
 529         printk("Enabling APIC mode:  %s. Using %d I/O APICs, target cpus %lx\n",
 530                 (apic_version[apic] == 0x14) ?
 531                         "Physical Cluster" : "Logical Cluster",
 532                         nr_ioapics, cpus_addr(*es7000_target_cpus())[0]);
 533 }
 534
 535 static int es7000_apicid_to_node(int logical_apicid)
 536 {
 537         return 0;
 538 }
 539
 540
 541 static int es7000_cpu_present_to_apicid(int mps_cpu)
 542 {
 543         if (!mps_cpu)
 544                 return boot_cpu_physical_apicid;
 545         else if (mps_cpu < nr_cpu_ids)
 546                 return (int) per_cpu(x86_bios_cpu_apicid, mps_cpu);
 547         else
 548                 return BAD_APICID;
 549 }
 550
 551 static physid_mask_t es7000_apicid_to_cpu_present(int phys_apicid)
 552 {
 553         static int id = 0;
 554         physid_mask_t mask;
 555
 556         mask = physid_mask_of_physid(id);
 557         ++id;
 558
 559         return mask;
 560 }
 561
 562 /* Mapping from cpu number to logical apicid */
 563 static int es7000_cpu_to_logical_apicid(int cpu)
 564 {
 565 #ifdef CONFIG_SMP
 566         if (cpu >= nr_cpu_ids)
 567                 return BAD_APICID;
 568         return (int)cpu_2_logical_apicid[cpu];
 569 #else
 570         return logical_smp_processor_id();
 571 #endif
 572 }
 573
 574 static physid_mask_t es7000_ioapic_phys_id_map(physid_mask_t phys_map)
 575 {
 576         /* For clustered we don't have a good way to do this yet - hack */
 577         return physids_promote(0xff);
 578 }
 579
 580 static int es7000_check_phys_apicid_present(int cpu_physical_apicid)
 581 {
 582         boot_cpu_physical_apicid = read_apic_id();
 583         return (1);
 584 }
 585
 586 static unsigned int
 587 es7000_cpu_mask_to_apicid_cluster(const struct cpumask *cpumask)
 588 {
 589         int cpus_found = 0;
 590         int num_bits_set;
 591         int apicid;
 592         int cpu;
 593
 594         num_bits_set = cpumask_weight(cpumask);
 595         /* Return id to all */
 596         if (num_bits_set == nr_cpu_ids)
 597                 return 0xFF;
 598         /*
 599          * The cpus in the mask must all be on the apic cluster.  If are not
 600          * on the same apicid cluster return default value of target_cpus():
 601          */
 602         cpu = cpumask_first(cpumask);
 603         apicid = es7000_cpu_to_logical_apicid(cpu);
 604
 605         while (cpus_found < num_bits_set) {
 606                 if (cpumask_test_cpu(cpu, cpumask)) {
 607                         int new_apicid = es7000_cpu_to_logical_apicid(cpu);
 608
 609                         if (apicid_cluster(apicid) !=
 610                                         apicid_cluster(new_apicid)) {
 611                                 printk ("%s: Not a valid mask!\n", __func__);
 612
 613                                 return 0xFF;
 614                         }
 615                         apicid = new_apicid;
 616                         cpus_found++;
 617                 }
 618                 cpu++;
 619         }
 620         return apicid;
 621 }
 622
 623 static unsigned int es7000_cpu_mask_to_apicid(const cpumask_t *cpumask)
 624 {
 625         int cpus_found = 0;
 626         int num_bits_set;
 627         int apicid;
 628         int cpu;
 629
 630         num_bits_set = cpus_weight(*cpumask);
 631         /* Return id to all */
 632         if (num_bits_set == nr_cpu_ids)
 633                 return es7000_cpu_to_logical_apicid(0);
 634         /*
 635          * The cpus in the mask must all be on the apic cluster.  If are not
 636          * on the same apicid cluster return default value of target_cpus():
 637          */
 638         cpu = first_cpu(*cpumask);
 639         apicid = es7000_cpu_to_logical_apicid(cpu);
 640         while (cpus_found < num_bits_set) {
 641                 if (cpu_isset(cpu, *cpumask)) {
 642                         int new_apicid = es7000_cpu_to_logical_apicid(cpu);
 643
 644                         if (apicid_cluster(apicid) !=
 645                                         apicid_cluster(new_apicid)) {
 646                                 printk ("%s: Not a valid mask!\n", __func__);
 647
 648                                 return es7000_cpu_to_logical_apicid(0);
 649                         }
 650                         apicid = new_apicid;
 651                         cpus_found++;
 652                 }
 653                 cpu++;
 654         }
 655         return apicid;
 656 }
 657
 658 static unsigned int
 659 es7000_cpu_mask_to_apicid_and(const struct cpumask *inmask,
 660                               const struct cpumask *andmask)
 661 {
 662         int apicid = es7000_cpu_to_logical_apicid(0);
 663         cpumask_var_t cpumask;
 664
 665         if (!alloc_cpumask_var(&cpumask, GFP_ATOMIC))
 666                 return apicid;
 667
 668         cpumask_and(cpumask, inmask, andmask);
 669         cpumask_and(cpumask, cpumask, cpu_online_mask);
 670         apicid = es7000_cpu_mask_to_apicid(cpumask);
 671
 672         free_cpumask_var(cpumask);
 673
 674         return apicid;
 675 }
 676
 677 static int es7000_phys_pkg_id(int cpuid_apic, int index_msb)
 678 {
 679         return cpuid_apic >> index_msb;
 680 }
 681
 682 void __init es7000_update_genapic_to_cluster(void)
 683 {
 684         apic->target_cpus = target_cpus_cluster;
 685         apic->irq_delivery_mode = INT_DELIVERY_MODE_CLUSTER;
 686         apic->irq_dest_mode = INT_DEST_MODE_CLUSTER;
 687
 688         apic->init_apic_ldr = es7000_init_apic_ldr_cluster;
 689
 690         apic->cpu_mask_to_apicid = es7000_cpu_mask_to_apicid_cluster;
 691 }
 692
 693 static int probe_es7000(void)
 694 {
 695         /* probed later in mptable/ACPI hooks */
 696         return 0;
 697 }
 698
 699 static __init int
 700 es7000_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
 701 {
 702         if (mpc->oemptr) {
 703                 struct mpc_oemtable *oem_table =
 704                         (struct mpc_oemtable *)mpc->oemptr;
 705
 706                 if (!strncmp(oem, "UNISYS", 6))
 707                         return parse_unisys_oem((char *)oem_table);
 708         }
 709         return 0;
 710 }
 711
 712 #ifdef CONFIG_ACPI
 713 /* Hook from generic ACPI tables.c */
 714 static int __init es7000_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 715 {
 716         unsigned long oem_addr = 0;
 717         int check_dsdt;
 718         int ret = 0;
 719
 720         /* check dsdt at first to avoid clear fix_map for oem_addr */
 721         check_dsdt = es7000_check_dsdt();
 722
 723         if (!find_unisys_acpi_oem_table(&oem_addr)) {
 724                 if (check_dsdt)
 725                         ret = parse_unisys_oem((char *)oem_addr);
 726                 else {
 727                         setup_unisys();
 728                         ret = 1;
 729                 }
 730                 /*
 731                  * we need to unmap it
 732                  */
 733                 unmap_unisys_acpi_oem_table(oem_addr);
 734         }
 735         return ret;
 736 }
 737 #else
 738 static int __init es7000_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 739 {
 740         return 0;
 741 }
 742 #endif
 743
 744
 745 struct genapic apic_es7000 = {
 746
 747         .name                           = "es7000",
 748         .probe                          = probe_es7000,
 749         .acpi_madt_oem_check            = es7000_acpi_madt_oem_check,
 750         .apic_id_registered             = es7000_apic_id_registered,
 751
 752         .irq_delivery_mode              = dest_Fixed,
 753         /* phys delivery to target CPUs: */
 754         .irq_dest_mode                  = 0,
 755
 756         .target_cpus                    = es7000_target_cpus,
 757         .disable_esr                    = 1,
 758         .dest_logical                   = 0,
 759         .check_apicid_used              = es7000_check_apicid_used,
 760         .check_apicid_present           = es7000_check_apicid_present,
 761
 762         .vector_allocation_domain       = es7000_vector_allocation_domain,
 763         .init_apic_ldr                  = es7000_init_apic_ldr,
 764
 765         .ioapic_phys_id_map             = es7000_ioapic_phys_id_map,
 766         .setup_apic_routing             = es7000_setup_apic_routing,
 767         .multi_timer_check              = NULL,
 768         .apicid_to_node                 = es7000_apicid_to_node,
 769         .cpu_to_logical_apicid          = es7000_cpu_to_logical_apicid,
 770         .cpu_present_to_apicid          = es7000_cpu_present_to_apicid,
 771         .apicid_to_cpu_present          = es7000_apicid_to_cpu_present,
 772         .setup_portio_remap             = NULL,
 773         .check_phys_apicid_present      = es7000_check_phys_apicid_present,
 774         .enable_apic_mode               = es7000_enable_apic_mode,
 775         .phys_pkg_id                    = es7000_phys_pkg_id,
 776         .mps_oem_check                  = es7000_mps_oem_check,
 777
 778         .get_apic_id                    = es7000_get_apic_id,
 779         .set_apic_id                    = NULL,
 780         .apic_id_mask                   = 0xFF << 24,
 781
 782         .cpu_mask_to_apicid             = es7000_cpu_mask_to_apicid,
 783         .cpu_mask_to_apicid_and         = es7000_cpu_mask_to_apicid_and,
 784
 785         .send_IPI_mask                  = es7000_send_IPI_mask,
 786         .send_IPI_mask_allbutself       = NULL,
 787         .send_IPI_allbutself            = es7000_send_IPI_allbutself,
 788         .send_IPI_all                   = es7000_send_IPI_all,
 789         .send_IPI_self                  = default_send_IPI_self,
 790
 791         .wakeup_cpu                     = NULL,
 792
 793         .trampoline_phys_low            = 0x467,
 794         .trampoline_phys_high           = 0x469,
 795
 796         .wait_for_init_deassert         = es7000_wait_for_init_deassert,
 797
 798         /* Nothing to do for most platforms, since cleared by the INIT cycle: */
 799         .smp_callin_clear_local_apic    = NULL,
 800         .store_NMI_vector               = NULL,
 801         .inquire_remote_apic            = default_inquire_remote_apic,
 802 };