1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * SGI UV APIC functions (note: not an Intel compatible APIC) 7 * 8 * (C) Copyright 2020 Hewlett Packard Enterprise Development LP 9 * Copyright (C) 2007-2014 Silicon Graphics, Inc. All rights reserved. 10 */ 11 #include <linux/crash_dump.h> 12 #include <linux/cpuhotplug.h> 13 #include <linux/cpumask.h> 14 #include <linux/proc_fs.h> 15 #include <linux/memory.h> 16 #include <linux/export.h> 17 #include <linux/pci.h> 18 #include <linux/acpi.h> 19 #include <linux/efi.h> 20 21 #include <asm/e820/api.h> 22 #include <asm/uv/uv_mmrs.h> 23 #include <asm/uv/uv_hub.h> 24 #include <asm/uv/bios.h> 25 #include <asm/uv/uv.h> 26 #include <asm/apic.h> 27 28 #include "local.h" 29 30 static enum uv_system_type uv_system_type; 31 static int uv_hubbed_system; 32 static int uv_hubless_system; 33 static u64 gru_start_paddr, gru_end_paddr; 34 static union uvh_apicid uvh_apicid; 35 static int uv_node_id; 36 37 /* Unpack AT/OEM/TABLE ID's to be NULL terminated strings */ 38 static u8 uv_archtype[UV_AT_SIZE + 1]; 39 static u8 oem_id[ACPI_OEM_ID_SIZE + 1]; 40 static u8 oem_table_id[ACPI_OEM_TABLE_ID_SIZE + 1]; 41 42 /* Information derived from CPUID and some UV MMRs */ 43 static struct { 44 unsigned int apicid_shift; 45 unsigned int apicid_mask; 46 unsigned int socketid_shift; /* aka pnode_shift for UV2/3 */ 47 unsigned int pnode_mask; 48 unsigned int nasid_shift; 49 unsigned int gpa_shift; 50 unsigned int gnode_shift; 51 unsigned int m_skt; 52 unsigned int n_skt; 53 } uv_cpuid; 54 55 static int uv_min_hub_revision_id; 56 57 static struct apic apic_x2apic_uv_x; 58 static struct uv_hub_info_s uv_hub_info_node0; 59 60 /* Set this to use hardware error handler instead of kernel panic: */ 61 static int disable_uv_undefined_panic = 1; 62 63 unsigned long uv_undefined(char *str) 64 { 65 if (likely(!disable_uv_undefined_panic)) 66 panic("UV: error: undefined MMR: %s\n", str); 67 else 68 pr_crit("UV: error: undefined MMR: %s\n", str); 69 70 /* Cause a machine fault: */ 71 return ~0ul; 72 } 73 EXPORT_SYMBOL(uv_undefined); 74 75 static unsigned long __init uv_early_read_mmr(unsigned long addr) 76 { 77 unsigned long val, *mmr; 78 79 mmr = early_ioremap(UV_LOCAL_MMR_BASE | addr, sizeof(*mmr)); 80 val = *mmr; 81 early_iounmap(mmr, sizeof(*mmr)); 82 83 return val; 84 } 85 86 static inline bool is_GRU_range(u64 start, u64 end) 87 { 88 if (!gru_start_paddr) 89 return false; 90 91 return start >= gru_start_paddr && end <= gru_end_paddr; 92 } 93 94 static bool uv_is_untracked_pat_range(u64 start, u64 end) 95 { 96 return is_ISA_range(start, end) || is_GRU_range(start, end); 97 } 98 99 static void __init early_get_pnodeid(void) 100 { 101 int pnode; 102 103 uv_cpuid.m_skt = 0; 104 if (UVH_RH10_GAM_ADDR_MAP_CONFIG) { 105 union uvh_rh10_gam_addr_map_config_u m_n_config; 106 107 m_n_config.v = uv_early_read_mmr(UVH_RH10_GAM_ADDR_MAP_CONFIG); 108 uv_cpuid.n_skt = m_n_config.s.n_skt; 109 uv_cpuid.nasid_shift = 0; 110 } else if (UVH_RH_GAM_ADDR_MAP_CONFIG) { 111 union uvh_rh_gam_addr_map_config_u m_n_config; 112 113 m_n_config.v = uv_early_read_mmr(UVH_RH_GAM_ADDR_MAP_CONFIG); 114 uv_cpuid.n_skt = m_n_config.s.n_skt; 115 if (is_uv(UV3)) 116 uv_cpuid.m_skt = m_n_config.s3.m_skt; 117 if (is_uv(UV2)) 118 uv_cpuid.m_skt = m_n_config.s2.m_skt; 119 uv_cpuid.nasid_shift = 1; 120 } else { 121 unsigned long GAM_ADDR_MAP_CONFIG = 0; 122 123 WARN(GAM_ADDR_MAP_CONFIG == 0, 124 "UV: WARN: GAM_ADDR_MAP_CONFIG is not available\n"); 125 uv_cpuid.n_skt = 0; 126 uv_cpuid.nasid_shift = 0; 127 } 128 129 if (is_uv(UV4|UVY)) 130 uv_cpuid.gnode_shift = 2; /* min partition is 4 sockets */ 131 132 uv_cpuid.pnode_mask = (1 << uv_cpuid.n_skt) - 1; 133 pnode = (uv_node_id >> uv_cpuid.nasid_shift) & uv_cpuid.pnode_mask; 134 uv_cpuid.gpa_shift = 46; /* Default unless changed */ 135 136 pr_info("UV: n_skt:%d pnmsk:%x pn:%x\n", 137 uv_cpuid.n_skt, uv_cpuid.pnode_mask, pnode); 138 } 139 140 /* Running on a UV Hubbed system, determine which UV Hub Type it is */ 141 static int __init early_set_hub_type(void) 142 { 143 union uvh_node_id_u node_id; 144 145 /* 146 * The NODE_ID MMR is always at offset 0. 147 * Contains the chip part # + revision. 148 * Node_id field started with 15 bits, 149 * ... now 7 but upper 8 are masked to 0. 150 * All blades/nodes have the same part # and hub revision. 151 */ 152 node_id.v = uv_early_read_mmr(UVH_NODE_ID); 153 uv_node_id = node_id.sx.node_id; 154 155 switch (node_id.s.part_number) { 156 157 case UV5_HUB_PART_NUMBER: 158 uv_min_hub_revision_id = node_id.s.revision 159 + UV5_HUB_REVISION_BASE; 160 uv_hub_type_set(UV5); 161 break; 162 163 /* UV4/4A only have a revision difference */ 164 case UV4_HUB_PART_NUMBER: 165 uv_min_hub_revision_id = node_id.s.revision 166 + UV4_HUB_REVISION_BASE - 1; 167 uv_hub_type_set(UV4); 168 if (uv_min_hub_revision_id == UV4A_HUB_REVISION_BASE) 169 uv_hub_type_set(UV4|UV4A); 170 break; 171 172 case UV3_HUB_PART_NUMBER: 173 case UV3_HUB_PART_NUMBER_X: 174 uv_min_hub_revision_id = node_id.s.revision 175 + UV3_HUB_REVISION_BASE; 176 uv_hub_type_set(UV3); 177 break; 178 179 case UV2_HUB_PART_NUMBER: 180 case UV2_HUB_PART_NUMBER_X: 181 uv_min_hub_revision_id = node_id.s.revision 182 + UV2_HUB_REVISION_BASE - 1; 183 uv_hub_type_set(UV2); 184 break; 185 186 default: 187 return 0; 188 } 189 190 pr_info("UV: part#:%x rev:%d rev_id:%d UVtype:0x%x\n", 191 node_id.s.part_number, node_id.s.revision, 192 uv_min_hub_revision_id, is_uv(~0)); 193 194 return 1; 195 } 196 197 static void __init uv_tsc_check_sync(void) 198 { 199 u64 mmr; 200 int sync_state; 201 int mmr_shift; 202 char *state; 203 204 /* UV5 guarantees synced TSCs; do not zero TSC_ADJUST */ 205 if (!is_uv(UV2|UV3|UV4)) { 206 mark_tsc_async_resets("UV5+"); 207 return; 208 } 209 210 /* UV2,3,4, UV BIOS TSC sync state available */ 211 mmr = uv_early_read_mmr(UVH_TSC_SYNC_MMR); 212 mmr_shift = 213 is_uv2_hub() ? UVH_TSC_SYNC_SHIFT_UV2K : UVH_TSC_SYNC_SHIFT; 214 sync_state = (mmr >> mmr_shift) & UVH_TSC_SYNC_MASK; 215 216 /* Check if TSC is valid for all sockets */ 217 switch (sync_state) { 218 case UVH_TSC_SYNC_VALID: 219 state = "in sync"; 220 mark_tsc_async_resets("UV BIOS"); 221 break; 222 223 /* If BIOS state unknown, don't do anything */ 224 case UVH_TSC_SYNC_UNKNOWN: 225 state = "unknown"; 226 break; 227 228 /* Otherwise, BIOS indicates problem with TSC */ 229 default: 230 state = "unstable"; 231 mark_tsc_unstable("UV BIOS"); 232 break; 233 } 234 pr_info("UV: TSC sync state from BIOS:0%d(%s)\n", sync_state, state); 235 } 236 237 /* Selector for (4|4A|5) structs */ 238 #define uvxy_field(sname, field, undef) ( \ 239 is_uv(UV4A) ? sname.s4a.field : \ 240 is_uv(UV4) ? sname.s4.field : \ 241 is_uv(UV3) ? sname.s3.field : \ 242 undef) 243 244 /* [Copied from arch/x86/kernel/cpu/topology.c:detect_extended_topology()] */ 245 246 #define SMT_LEVEL 0 /* Leaf 0xb SMT level */ 247 #define INVALID_TYPE 0 /* Leaf 0xb sub-leaf types */ 248 #define SMT_TYPE 1 249 #define CORE_TYPE 2 250 #define LEAFB_SUBTYPE(ecx) (((ecx) >> 8) & 0xff) 251 #define BITS_SHIFT_NEXT_LEVEL(eax) ((eax) & 0x1f) 252 253 static void set_x2apic_bits(void) 254 { 255 unsigned int eax, ebx, ecx, edx, sub_index; 256 unsigned int sid_shift; 257 258 cpuid(0, &eax, &ebx, &ecx, &edx); 259 if (eax < 0xb) { 260 pr_info("UV: CPU does not have CPUID.11\n"); 261 return; 262 } 263 264 cpuid_count(0xb, SMT_LEVEL, &eax, &ebx, &ecx, &edx); 265 if (ebx == 0 || (LEAFB_SUBTYPE(ecx) != SMT_TYPE)) { 266 pr_info("UV: CPUID.11 not implemented\n"); 267 return; 268 } 269 270 sid_shift = BITS_SHIFT_NEXT_LEVEL(eax); 271 sub_index = 1; 272 do { 273 cpuid_count(0xb, sub_index, &eax, &ebx, &ecx, &edx); 274 if (LEAFB_SUBTYPE(ecx) == CORE_TYPE) { 275 sid_shift = BITS_SHIFT_NEXT_LEVEL(eax); 276 break; 277 } 278 sub_index++; 279 } while (LEAFB_SUBTYPE(ecx) != INVALID_TYPE); 280 281 uv_cpuid.apicid_shift = 0; 282 uv_cpuid.apicid_mask = (~(-1 << sid_shift)); 283 uv_cpuid.socketid_shift = sid_shift; 284 } 285 286 static void __init early_get_apic_socketid_shift(void) 287 { 288 if (is_uv2_hub() || is_uv3_hub()) 289 uvh_apicid.v = uv_early_read_mmr(UVH_APICID); 290 291 set_x2apic_bits(); 292 293 pr_info("UV: apicid_shift:%d apicid_mask:0x%x\n", uv_cpuid.apicid_shift, uv_cpuid.apicid_mask); 294 pr_info("UV: socketid_shift:%d pnode_mask:0x%x\n", uv_cpuid.socketid_shift, uv_cpuid.pnode_mask); 295 } 296 297 static void __init uv_stringify(int len, char *to, char *from) 298 { 299 strscpy(to, from, len); 300 301 /* Trim trailing spaces */ 302 (void)strim(to); 303 } 304 305 /* Find UV arch type entry in UVsystab */ 306 static unsigned long __init early_find_archtype(struct uv_systab *st) 307 { 308 int i; 309 310 for (i = 0; st->entry[i].type != UV_SYSTAB_TYPE_UNUSED; i++) { 311 unsigned long ptr = st->entry[i].offset; 312 313 if (!ptr) 314 continue; 315 ptr += (unsigned long)st; 316 if (st->entry[i].type == UV_SYSTAB_TYPE_ARCH_TYPE) 317 return ptr; 318 } 319 return 0; 320 } 321 322 /* Validate UV arch type field in UVsystab */ 323 static int __init decode_arch_type(unsigned long ptr) 324 { 325 struct uv_arch_type_entry *uv_ate = (struct uv_arch_type_entry *)ptr; 326 int n = strlen(uv_ate->archtype); 327 328 if (n > 0 && n < sizeof(uv_ate->archtype)) { 329 pr_info("UV: UVarchtype received from BIOS\n"); 330 uv_stringify(sizeof(uv_archtype), uv_archtype, uv_ate->archtype); 331 return 1; 332 } 333 return 0; 334 } 335 336 /* Determine if UV arch type entry might exist in UVsystab */ 337 static int __init early_get_arch_type(void) 338 { 339 unsigned long uvst_physaddr, uvst_size, ptr; 340 struct uv_systab *st; 341 u32 rev; 342 int ret; 343 344 uvst_physaddr = get_uv_systab_phys(0); 345 if (!uvst_physaddr) 346 return 0; 347 348 st = early_memremap_ro(uvst_physaddr, sizeof(struct uv_systab)); 349 if (!st) { 350 pr_err("UV: Cannot access UVsystab, remap failed\n"); 351 return 0; 352 } 353 354 rev = st->revision; 355 if (rev < UV_SYSTAB_VERSION_UV5) { 356 early_memunmap(st, sizeof(struct uv_systab)); 357 return 0; 358 } 359 360 uvst_size = st->size; 361 early_memunmap(st, sizeof(struct uv_systab)); 362 st = early_memremap_ro(uvst_physaddr, uvst_size); 363 if (!st) { 364 pr_err("UV: Cannot access UVarchtype, remap failed\n"); 365 return 0; 366 } 367 368 ptr = early_find_archtype(st); 369 if (!ptr) { 370 early_memunmap(st, uvst_size); 371 return 0; 372 } 373 374 ret = decode_arch_type(ptr); 375 early_memunmap(st, uvst_size); 376 return ret; 377 } 378 379 /* UV system found, check which APIC MODE BIOS already selected */ 380 static void __init early_set_apic_mode(void) 381 { 382 if (x2apic_enabled()) 383 uv_system_type = UV_X2APIC; 384 else 385 uv_system_type = UV_LEGACY_APIC; 386 } 387 388 static int __init uv_set_system_type(char *_oem_id, char *_oem_table_id) 389 { 390 /* Save OEM_ID passed from ACPI MADT */ 391 uv_stringify(sizeof(oem_id), oem_id, _oem_id); 392 393 /* Check if BIOS sent us a UVarchtype */ 394 if (!early_get_arch_type()) 395 396 /* If not use OEM ID for UVarchtype */ 397 uv_stringify(sizeof(uv_archtype), uv_archtype, oem_id); 398 399 /* Check if not hubbed */ 400 if (strncmp(uv_archtype, "SGI", 3) != 0) { 401 402 /* (Not hubbed), check if not hubless */ 403 if (strncmp(uv_archtype, "NSGI", 4) != 0) 404 405 /* (Not hubless), not a UV */ 406 return 0; 407 408 /* Is UV hubless system */ 409 uv_hubless_system = 0x01; 410 411 /* UV5 Hubless */ 412 if (strncmp(uv_archtype, "NSGI5", 5) == 0) 413 uv_hubless_system |= 0x20; 414 415 /* UV4 Hubless: CH */ 416 else if (strncmp(uv_archtype, "NSGI4", 5) == 0) 417 uv_hubless_system |= 0x10; 418 419 /* UV3 Hubless: UV300/MC990X w/o hub */ 420 else 421 uv_hubless_system |= 0x8; 422 423 /* Copy OEM Table ID */ 424 uv_stringify(sizeof(oem_table_id), oem_table_id, _oem_table_id); 425 426 pr_info("UV: OEM IDs %s/%s, SystemType %d, HUBLESS ID %x\n", 427 oem_id, oem_table_id, uv_system_type, uv_hubless_system); 428 429 return 0; 430 } 431 432 if (numa_off) { 433 pr_err("UV: NUMA is off, disabling UV support\n"); 434 return 0; 435 } 436 437 /* Set hubbed type if true */ 438 uv_hub_info->hub_revision = 439 !strncmp(uv_archtype, "SGI5", 4) ? UV5_HUB_REVISION_BASE : 440 !strncmp(uv_archtype, "SGI4", 4) ? UV4_HUB_REVISION_BASE : 441 !strncmp(uv_archtype, "SGI3", 4) ? UV3_HUB_REVISION_BASE : 442 !strcmp(uv_archtype, "SGI2") ? UV2_HUB_REVISION_BASE : 0; 443 444 switch (uv_hub_info->hub_revision) { 445 case UV5_HUB_REVISION_BASE: 446 uv_hubbed_system = 0x21; 447 uv_hub_type_set(UV5); 448 break; 449 450 case UV4_HUB_REVISION_BASE: 451 uv_hubbed_system = 0x11; 452 uv_hub_type_set(UV4); 453 break; 454 455 case UV3_HUB_REVISION_BASE: 456 uv_hubbed_system = 0x9; 457 uv_hub_type_set(UV3); 458 break; 459 460 case UV2_HUB_REVISION_BASE: 461 uv_hubbed_system = 0x5; 462 uv_hub_type_set(UV2); 463 break; 464 465 default: 466 return 0; 467 } 468 469 /* Get UV hub chip part number & revision */ 470 early_set_hub_type(); 471 472 /* Other UV setup functions */ 473 early_set_apic_mode(); 474 early_get_pnodeid(); 475 early_get_apic_socketid_shift(); 476 x86_platform.is_untracked_pat_range = uv_is_untracked_pat_range; 477 x86_platform.nmi_init = uv_nmi_init; 478 uv_tsc_check_sync(); 479 480 return 1; 481 } 482 483 /* Called early to probe for the correct APIC driver */ 484 static int __init uv_acpi_madt_oem_check(char *_oem_id, char *_oem_table_id) 485 { 486 /* Set up early hub info fields for Node 0 */ 487 uv_cpu_info->p_uv_hub_info = &uv_hub_info_node0; 488 489 /* If not UV, return. */ 490 if (uv_set_system_type(_oem_id, _oem_table_id) == 0) 491 return 0; 492 493 /* Save for display of the OEM Table ID */ 494 uv_stringify(sizeof(oem_table_id), oem_table_id, _oem_table_id); 495 496 pr_info("UV: OEM IDs %s/%s, System/UVType %d/0x%x, HUB RevID %d\n", 497 oem_id, oem_table_id, uv_system_type, is_uv(UV_ANY), 498 uv_min_hub_revision_id); 499 500 return 0; 501 } 502 503 enum uv_system_type get_uv_system_type(void) 504 { 505 return uv_system_type; 506 } 507 508 int uv_get_hubless_system(void) 509 { 510 return uv_hubless_system; 511 } 512 EXPORT_SYMBOL_GPL(uv_get_hubless_system); 513 514 ssize_t uv_get_archtype(char *buf, int len) 515 { 516 return scnprintf(buf, len, "%s/%s", uv_archtype, oem_table_id); 517 } 518 EXPORT_SYMBOL_GPL(uv_get_archtype); 519 520 int is_uv_system(void) 521 { 522 return uv_system_type != UV_NONE; 523 } 524 EXPORT_SYMBOL_GPL(is_uv_system); 525 526 int is_uv_hubbed(int uvtype) 527 { 528 return (uv_hubbed_system & uvtype); 529 } 530 EXPORT_SYMBOL_GPL(is_uv_hubbed); 531 532 static int is_uv_hubless(int uvtype) 533 { 534 return (uv_hubless_system & uvtype); 535 } 536 537 void **__uv_hub_info_list; 538 EXPORT_SYMBOL_GPL(__uv_hub_info_list); 539 540 DEFINE_PER_CPU(struct uv_cpu_info_s, __uv_cpu_info); 541 EXPORT_PER_CPU_SYMBOL_GPL(__uv_cpu_info); 542 543 short uv_possible_blades; 544 EXPORT_SYMBOL_GPL(uv_possible_blades); 545 546 unsigned long sn_rtc_cycles_per_second; 547 EXPORT_SYMBOL(sn_rtc_cycles_per_second); 548 549 /* The following values are used for the per node hub info struct */ 550 static __initdata unsigned short _min_socket, _max_socket; 551 static __initdata unsigned short _min_pnode, _max_pnode, _gr_table_len; 552 static __initdata struct uv_gam_range_entry *uv_gre_table; 553 static __initdata struct uv_gam_parameters *uv_gp_table; 554 static __initdata unsigned short *_socket_to_node; 555 static __initdata unsigned short *_socket_to_pnode; 556 static __initdata unsigned short *_pnode_to_socket; 557 static __initdata unsigned short *_node_to_socket; 558 559 static __initdata struct uv_gam_range_s *_gr_table; 560 561 #define SOCK_EMPTY ((unsigned short)~0) 562 563 /* Default UV memory block size is 2GB */ 564 static unsigned long mem_block_size __initdata = (2UL << 30); 565 566 /* Kernel parameter to specify UV mem block size */ 567 static int __init parse_mem_block_size(char *ptr) 568 { 569 unsigned long size = memparse(ptr, NULL); 570 571 /* Size will be rounded down by set_block_size() below */ 572 mem_block_size = size; 573 return 0; 574 } 575 early_param("uv_memblksize", parse_mem_block_size); 576 577 static __init int adj_blksize(u32 lgre) 578 { 579 unsigned long base = (unsigned long)lgre << UV_GAM_RANGE_SHFT; 580 unsigned long size; 581 582 for (size = mem_block_size; size > MIN_MEMORY_BLOCK_SIZE; size >>= 1) 583 if (IS_ALIGNED(base, size)) 584 break; 585 586 if (size >= mem_block_size) 587 return 0; 588 589 mem_block_size = size; 590 return 1; 591 } 592 593 static __init void set_block_size(void) 594 { 595 unsigned int order = ffs(mem_block_size); 596 597 if (order) { 598 /* adjust for ffs return of 1..64 */ 599 set_memory_block_size_order(order - 1); 600 pr_info("UV: mem_block_size set to 0x%lx\n", mem_block_size); 601 } else { 602 /* bad or zero value, default to 1UL << 31 (2GB) */ 603 pr_err("UV: mem_block_size error with 0x%lx\n", mem_block_size); 604 set_memory_block_size_order(31); 605 } 606 } 607 608 /* Build GAM range lookup table: */ 609 static __init void build_uv_gr_table(void) 610 { 611 struct uv_gam_range_entry *gre = uv_gre_table; 612 struct uv_gam_range_s *grt; 613 unsigned long last_limit = 0, ram_limit = 0; 614 int bytes, i, sid, lsid = -1, indx = 0, lindx = -1; 615 616 if (!gre) 617 return; 618 619 bytes = _gr_table_len * sizeof(struct uv_gam_range_s); 620 grt = kzalloc(bytes, GFP_KERNEL); 621 if (WARN_ON_ONCE(!grt)) 622 return; 623 _gr_table = grt; 624 625 for (; gre->type != UV_GAM_RANGE_TYPE_UNUSED; gre++) { 626 if (gre->type == UV_GAM_RANGE_TYPE_HOLE) { 627 if (!ram_limit) { 628 /* Mark hole between RAM/non-RAM: */ 629 ram_limit = last_limit; 630 last_limit = gre->limit; 631 lsid++; 632 continue; 633 } 634 last_limit = gre->limit; 635 pr_info("UV: extra hole in GAM RE table @%d\n", (int)(gre - uv_gre_table)); 636 continue; 637 } 638 if (_max_socket < gre->sockid) { 639 pr_err("UV: GAM table sockid(%d) too large(>%d) @%d\n", gre->sockid, _max_socket, (int)(gre - uv_gre_table)); 640 continue; 641 } 642 sid = gre->sockid - _min_socket; 643 if (lsid < sid) { 644 /* New range: */ 645 grt = &_gr_table[indx]; 646 grt->base = lindx; 647 grt->nasid = gre->nasid; 648 grt->limit = last_limit = gre->limit; 649 lsid = sid; 650 lindx = indx++; 651 continue; 652 } 653 /* Update range: */ 654 if (lsid == sid && !ram_limit) { 655 /* .. if contiguous: */ 656 if (grt->limit == last_limit) { 657 grt->limit = last_limit = gre->limit; 658 continue; 659 } 660 } 661 /* Non-contiguous RAM range: */ 662 if (!ram_limit) { 663 grt++; 664 grt->base = lindx; 665 grt->nasid = gre->nasid; 666 grt->limit = last_limit = gre->limit; 667 continue; 668 } 669 /* Non-contiguous/non-RAM: */ 670 grt++; 671 /* base is this entry */ 672 grt->base = grt - _gr_table; 673 grt->nasid = gre->nasid; 674 grt->limit = last_limit = gre->limit; 675 lsid++; 676 } 677 678 /* Shorten table if possible */ 679 grt++; 680 i = grt - _gr_table; 681 if (i < _gr_table_len) { 682 void *ret; 683 684 bytes = i * sizeof(struct uv_gam_range_s); 685 ret = krealloc(_gr_table, bytes, GFP_KERNEL); 686 if (ret) { 687 _gr_table = ret; 688 _gr_table_len = i; 689 } 690 } 691 692 /* Display resultant GAM range table: */ 693 for (i = 0, grt = _gr_table; i < _gr_table_len; i++, grt++) { 694 unsigned long start, end; 695 int gb = grt->base; 696 697 start = gb < 0 ? 0 : (unsigned long)_gr_table[gb].limit << UV_GAM_RANGE_SHFT; 698 end = (unsigned long)grt->limit << UV_GAM_RANGE_SHFT; 699 700 pr_info("UV: GAM Range %2d %04x 0x%013lx-0x%013lx (%d)\n", i, grt->nasid, start, end, gb); 701 } 702 } 703 704 static int uv_wakeup_secondary(u32 phys_apicid, unsigned long start_rip) 705 { 706 unsigned long val; 707 int pnode; 708 709 pnode = uv_apicid_to_pnode(phys_apicid); 710 711 val = (1UL << UVH_IPI_INT_SEND_SHFT) | 712 (phys_apicid << UVH_IPI_INT_APIC_ID_SHFT) | 713 ((start_rip << UVH_IPI_INT_VECTOR_SHFT) >> 12) | 714 APIC_DM_INIT; 715 716 uv_write_global_mmr64(pnode, UVH_IPI_INT, val); 717 718 val = (1UL << UVH_IPI_INT_SEND_SHFT) | 719 (phys_apicid << UVH_IPI_INT_APIC_ID_SHFT) | 720 ((start_rip << UVH_IPI_INT_VECTOR_SHFT) >> 12) | 721 APIC_DM_STARTUP; 722 723 uv_write_global_mmr64(pnode, UVH_IPI_INT, val); 724 725 return 0; 726 } 727 728 static void uv_send_IPI_one(int cpu, int vector) 729 { 730 unsigned long apicid = per_cpu(x86_cpu_to_apicid, cpu); 731 int pnode = uv_apicid_to_pnode(apicid); 732 unsigned long dmode, val; 733 734 if (vector == NMI_VECTOR) 735 dmode = APIC_DELIVERY_MODE_NMI; 736 else 737 dmode = APIC_DELIVERY_MODE_FIXED; 738 739 val = (1UL << UVH_IPI_INT_SEND_SHFT) | 740 (apicid << UVH_IPI_INT_APIC_ID_SHFT) | 741 (dmode << UVH_IPI_INT_DELIVERY_MODE_SHFT) | 742 (vector << UVH_IPI_INT_VECTOR_SHFT); 743 744 uv_write_global_mmr64(pnode, UVH_IPI_INT, val); 745 } 746 747 static void uv_send_IPI_mask(const struct cpumask *mask, int vector) 748 { 749 unsigned int cpu; 750 751 for_each_cpu(cpu, mask) 752 uv_send_IPI_one(cpu, vector); 753 } 754 755 static void uv_send_IPI_mask_allbutself(const struct cpumask *mask, int vector) 756 { 757 unsigned int this_cpu = smp_processor_id(); 758 unsigned int cpu; 759 760 for_each_cpu(cpu, mask) { 761 if (cpu != this_cpu) 762 uv_send_IPI_one(cpu, vector); 763 } 764 } 765 766 static void uv_send_IPI_allbutself(int vector) 767 { 768 unsigned int this_cpu = smp_processor_id(); 769 unsigned int cpu; 770 771 for_each_online_cpu(cpu) { 772 if (cpu != this_cpu) 773 uv_send_IPI_one(cpu, vector); 774 } 775 } 776 777 static void uv_send_IPI_all(int vector) 778 { 779 uv_send_IPI_mask(cpu_online_mask, vector); 780 } 781 782 static u32 set_apic_id(u32 id) 783 { 784 return id; 785 } 786 787 static unsigned int uv_read_apic_id(void) 788 { 789 return x2apic_get_apic_id(apic_read(APIC_ID)); 790 } 791 792 static u32 uv_phys_pkg_id(u32 initial_apicid, int index_msb) 793 { 794 return uv_read_apic_id() >> index_msb; 795 } 796 797 static int uv_probe(void) 798 { 799 return apic == &apic_x2apic_uv_x; 800 } 801 802 static struct apic apic_x2apic_uv_x __ro_after_init = { 803 804 .name = "UV large system", 805 .probe = uv_probe, 806 .acpi_madt_oem_check = uv_acpi_madt_oem_check, 807 808 .dest_mode_logical = false, 809 810 .disable_esr = 0, 811 812 .cpu_present_to_apicid = default_cpu_present_to_apicid, 813 .phys_pkg_id = uv_phys_pkg_id, 814 815 .max_apic_id = UINT_MAX, 816 .get_apic_id = x2apic_get_apic_id, 817 .set_apic_id = set_apic_id, 818 819 .calc_dest_apicid = apic_default_calc_apicid, 820 821 .send_IPI = uv_send_IPI_one, 822 .send_IPI_mask = uv_send_IPI_mask, 823 .send_IPI_mask_allbutself = uv_send_IPI_mask_allbutself, 824 .send_IPI_allbutself = uv_send_IPI_allbutself, 825 .send_IPI_all = uv_send_IPI_all, 826 .send_IPI_self = x2apic_send_IPI_self, 827 828 .wakeup_secondary_cpu = uv_wakeup_secondary, 829 830 .read = native_apic_msr_read, 831 .write = native_apic_msr_write, 832 .eoi = native_apic_msr_eoi, 833 .icr_read = native_x2apic_icr_read, 834 .icr_write = native_x2apic_icr_write, 835 }; 836 837 #define UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_LENGTH 3 838 #define DEST_SHIFT UVXH_RH_GAM_ALIAS_0_REDIRECT_CONFIG_DEST_BASE_SHFT 839 840 static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size) 841 { 842 union uvh_rh_gam_alias_2_overlay_config_u alias; 843 union uvh_rh_gam_alias_2_redirect_config_u redirect; 844 unsigned long m_redirect; 845 unsigned long m_overlay; 846 int i; 847 848 for (i = 0; i < UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_LENGTH; i++) { 849 switch (i) { 850 case 0: 851 m_redirect = UVH_RH_GAM_ALIAS_0_REDIRECT_CONFIG; 852 m_overlay = UVH_RH_GAM_ALIAS_0_OVERLAY_CONFIG; 853 break; 854 case 1: 855 m_redirect = UVH_RH_GAM_ALIAS_1_REDIRECT_CONFIG; 856 m_overlay = UVH_RH_GAM_ALIAS_1_OVERLAY_CONFIG; 857 break; 858 case 2: 859 m_redirect = UVH_RH_GAM_ALIAS_2_REDIRECT_CONFIG; 860 m_overlay = UVH_RH_GAM_ALIAS_2_OVERLAY_CONFIG; 861 break; 862 } 863 alias.v = uv_read_local_mmr(m_overlay); 864 if (alias.s.enable && alias.s.base == 0) { 865 *size = (1UL << alias.s.m_alias); 866 redirect.v = uv_read_local_mmr(m_redirect); 867 *base = (unsigned long)redirect.s.dest_base << DEST_SHIFT; 868 return; 869 } 870 } 871 *base = *size = 0; 872 } 873 874 enum map_type {map_wb, map_uc}; 875 static const char * const mt[] = { "WB", "UC" }; 876 877 static __init void map_high(char *id, unsigned long base, int pshift, int bshift, int max_pnode, enum map_type map_type) 878 { 879 unsigned long bytes, paddr; 880 881 paddr = base << pshift; 882 bytes = (1UL << bshift) * (max_pnode + 1); 883 if (!paddr) { 884 pr_info("UV: Map %s_HI base address NULL\n", id); 885 return; 886 } 887 if (map_type == map_uc) 888 init_extra_mapping_uc(paddr, bytes); 889 else 890 init_extra_mapping_wb(paddr, bytes); 891 892 pr_info("UV: Map %s_HI 0x%lx - 0x%lx %s (%d segments)\n", 893 id, paddr, paddr + bytes, mt[map_type], max_pnode + 1); 894 } 895 896 static __init void map_gru_high(int max_pnode) 897 { 898 union uvh_rh_gam_gru_overlay_config_u gru; 899 unsigned long mask, base; 900 int shift; 901 902 if (UVH_RH_GAM_GRU_OVERLAY_CONFIG) { 903 gru.v = uv_read_local_mmr(UVH_RH_GAM_GRU_OVERLAY_CONFIG); 904 shift = UVH_RH_GAM_GRU_OVERLAY_CONFIG_BASE_SHFT; 905 mask = UVH_RH_GAM_GRU_OVERLAY_CONFIG_BASE_MASK; 906 } else if (UVH_RH10_GAM_GRU_OVERLAY_CONFIG) { 907 gru.v = uv_read_local_mmr(UVH_RH10_GAM_GRU_OVERLAY_CONFIG); 908 shift = UVH_RH10_GAM_GRU_OVERLAY_CONFIG_BASE_SHFT; 909 mask = UVH_RH10_GAM_GRU_OVERLAY_CONFIG_BASE_MASK; 910 } else { 911 pr_err("UV: GRU unavailable (no MMR)\n"); 912 return; 913 } 914 915 if (!gru.s.enable) { 916 pr_info("UV: GRU disabled (by BIOS)\n"); 917 return; 918 } 919 920 base = (gru.v & mask) >> shift; 921 map_high("GRU", base, shift, shift, max_pnode, map_wb); 922 gru_start_paddr = ((u64)base << shift); 923 gru_end_paddr = gru_start_paddr + (1UL << shift) * (max_pnode + 1); 924 } 925 926 static __init void map_mmr_high(int max_pnode) 927 { 928 unsigned long base; 929 int shift; 930 bool enable; 931 932 if (UVH_RH10_GAM_MMR_OVERLAY_CONFIG) { 933 union uvh_rh10_gam_mmr_overlay_config_u mmr; 934 935 mmr.v = uv_read_local_mmr(UVH_RH10_GAM_MMR_OVERLAY_CONFIG); 936 enable = mmr.s.enable; 937 base = mmr.s.base; 938 shift = UVH_RH10_GAM_MMR_OVERLAY_CONFIG_BASE_SHFT; 939 } else if (UVH_RH_GAM_MMR_OVERLAY_CONFIG) { 940 union uvh_rh_gam_mmr_overlay_config_u mmr; 941 942 mmr.v = uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG); 943 enable = mmr.s.enable; 944 base = mmr.s.base; 945 shift = UVH_RH_GAM_MMR_OVERLAY_CONFIG_BASE_SHFT; 946 } else { 947 pr_err("UV:%s:RH_GAM_MMR_OVERLAY_CONFIG MMR undefined?\n", 948 __func__); 949 return; 950 } 951 952 if (enable) 953 map_high("MMR", base, shift, shift, max_pnode, map_uc); 954 else 955 pr_info("UV: MMR disabled\n"); 956 } 957 958 /* Arch specific ENUM cases */ 959 enum mmioh_arch { 960 UV2_MMIOH = -1, 961 UVY_MMIOH0, UVY_MMIOH1, 962 UVX_MMIOH0, UVX_MMIOH1, 963 }; 964 965 /* Calculate and Map MMIOH Regions */ 966 static void __init calc_mmioh_map(enum mmioh_arch index, 967 int min_pnode, int max_pnode, 968 int shift, unsigned long base, int m_io, int n_io) 969 { 970 unsigned long mmr, nasid_mask; 971 int nasid, min_nasid, max_nasid, lnasid, mapped; 972 int i, fi, li, n, max_io; 973 char id[8]; 974 975 /* One (UV2) mapping */ 976 if (index == UV2_MMIOH) { 977 strscpy(id, "MMIOH", sizeof(id)); 978 max_io = max_pnode; 979 mapped = 0; 980 goto map_exit; 981 } 982 983 /* small and large MMIOH mappings */ 984 switch (index) { 985 case UVY_MMIOH0: 986 mmr = UVH_RH10_GAM_MMIOH_REDIRECT_CONFIG0; 987 nasid_mask = UVYH_RH10_GAM_MMIOH_REDIRECT_CONFIG0_NASID_MASK; 988 n = UVH_RH10_GAM_MMIOH_REDIRECT_CONFIG0_DEPTH; 989 min_nasid = min_pnode; 990 max_nasid = max_pnode; 991 mapped = 1; 992 break; 993 case UVY_MMIOH1: 994 mmr = UVH_RH10_GAM_MMIOH_REDIRECT_CONFIG1; 995 nasid_mask = UVYH_RH10_GAM_MMIOH_REDIRECT_CONFIG1_NASID_MASK; 996 n = UVH_RH10_GAM_MMIOH_REDIRECT_CONFIG1_DEPTH; 997 min_nasid = min_pnode; 998 max_nasid = max_pnode; 999 mapped = 1; 1000 break; 1001 case UVX_MMIOH0: 1002 mmr = UVH_RH_GAM_MMIOH_REDIRECT_CONFIG0; 1003 nasid_mask = UVH_RH_GAM_MMIOH_REDIRECT_CONFIG0_NASID_MASK; 1004 n = UVH_RH_GAM_MMIOH_REDIRECT_CONFIG0_DEPTH; 1005 min_nasid = min_pnode * 2; 1006 max_nasid = max_pnode * 2; 1007 mapped = 1; 1008 break; 1009 case UVX_MMIOH1: 1010 mmr = UVH_RH_GAM_MMIOH_REDIRECT_CONFIG1; 1011 nasid_mask = UVH_RH_GAM_MMIOH_REDIRECT_CONFIG1_NASID_MASK; 1012 n = UVH_RH_GAM_MMIOH_REDIRECT_CONFIG1_DEPTH; 1013 min_nasid = min_pnode * 2; 1014 max_nasid = max_pnode * 2; 1015 mapped = 1; 1016 break; 1017 default: 1018 pr_err("UV:%s:Invalid mapping type:%d\n", __func__, index); 1019 return; 1020 } 1021 1022 /* enum values chosen so (index mod 2) is MMIOH 0/1 (low/high) */ 1023 snprintf(id, sizeof(id), "MMIOH%d", index%2); 1024 1025 max_io = lnasid = fi = li = -1; 1026 for (i = 0; i < n; i++) { 1027 unsigned long m_redirect = mmr + i * 8; 1028 unsigned long redirect = uv_read_local_mmr(m_redirect); 1029 1030 nasid = redirect & nasid_mask; 1031 if (i == 0) 1032 pr_info("UV: %s redirect base 0x%lx(@0x%lx) 0x%04x\n", 1033 id, redirect, m_redirect, nasid); 1034 1035 /* Invalid NASID check */ 1036 if (nasid < min_nasid || max_nasid < nasid) { 1037 /* Not an error: unused table entries get "poison" values */ 1038 pr_debug("UV:%s:Invalid NASID(%x):%x (range:%x..%x)\n", 1039 __func__, index, nasid, min_nasid, max_nasid); 1040 nasid = -1; 1041 } 1042 1043 if (nasid == lnasid) { 1044 li = i; 1045 /* Last entry check: */ 1046 if (i != n-1) 1047 continue; 1048 } 1049 1050 /* Check if we have a cached (or last) redirect to print: */ 1051 if (lnasid != -1 || (i == n-1 && nasid != -1)) { 1052 unsigned long addr1, addr2; 1053 int f, l; 1054 1055 if (lnasid == -1) { 1056 f = l = i; 1057 lnasid = nasid; 1058 } else { 1059 f = fi; 1060 l = li; 1061 } 1062 addr1 = (base << shift) + f * (1ULL << m_io); 1063 addr2 = (base << shift) + (l + 1) * (1ULL << m_io); 1064 pr_info("UV: %s[%03d..%03d] NASID 0x%04x ADDR 0x%016lx - 0x%016lx\n", 1065 id, fi, li, lnasid, addr1, addr2); 1066 if (max_io < l) 1067 max_io = l; 1068 } 1069 fi = li = i; 1070 lnasid = nasid; 1071 } 1072 1073 map_exit: 1074 pr_info("UV: %s base:0x%lx shift:%d m_io:%d max_io:%d max_pnode:0x%x\n", 1075 id, base, shift, m_io, max_io, max_pnode); 1076 1077 if (max_io >= 0 && !mapped) 1078 map_high(id, base, shift, m_io, max_io, map_uc); 1079 } 1080 1081 static __init void map_mmioh_high(int min_pnode, int max_pnode) 1082 { 1083 /* UVY flavor */ 1084 if (UVH_RH10_GAM_MMIOH_OVERLAY_CONFIG0) { 1085 union uvh_rh10_gam_mmioh_overlay_config0_u mmioh0; 1086 union uvh_rh10_gam_mmioh_overlay_config1_u mmioh1; 1087 1088 mmioh0.v = uv_read_local_mmr(UVH_RH10_GAM_MMIOH_OVERLAY_CONFIG0); 1089 if (unlikely(mmioh0.s.enable == 0)) 1090 pr_info("UV: MMIOH0 disabled\n"); 1091 else 1092 calc_mmioh_map(UVY_MMIOH0, min_pnode, max_pnode, 1093 UVH_RH10_GAM_MMIOH_OVERLAY_CONFIG0_BASE_SHFT, 1094 mmioh0.s.base, mmioh0.s.m_io, mmioh0.s.n_io); 1095 1096 mmioh1.v = uv_read_local_mmr(UVH_RH10_GAM_MMIOH_OVERLAY_CONFIG1); 1097 if (unlikely(mmioh1.s.enable == 0)) 1098 pr_info("UV: MMIOH1 disabled\n"); 1099 else 1100 calc_mmioh_map(UVY_MMIOH1, min_pnode, max_pnode, 1101 UVH_RH10_GAM_MMIOH_OVERLAY_CONFIG1_BASE_SHFT, 1102 mmioh1.s.base, mmioh1.s.m_io, mmioh1.s.n_io); 1103 return; 1104 } 1105 /* UVX flavor */ 1106 if (UVH_RH_GAM_MMIOH_OVERLAY_CONFIG0) { 1107 union uvh_rh_gam_mmioh_overlay_config0_u mmioh0; 1108 union uvh_rh_gam_mmioh_overlay_config1_u mmioh1; 1109 1110 mmioh0.v = uv_read_local_mmr(UVH_RH_GAM_MMIOH_OVERLAY_CONFIG0); 1111 if (unlikely(mmioh0.s.enable == 0)) 1112 pr_info("UV: MMIOH0 disabled\n"); 1113 else { 1114 unsigned long base = uvxy_field(mmioh0, base, 0); 1115 int m_io = uvxy_field(mmioh0, m_io, 0); 1116 int n_io = uvxy_field(mmioh0, n_io, 0); 1117 1118 calc_mmioh_map(UVX_MMIOH0, min_pnode, max_pnode, 1119 UVH_RH_GAM_MMIOH_OVERLAY_CONFIG0_BASE_SHFT, 1120 base, m_io, n_io); 1121 } 1122 1123 mmioh1.v = uv_read_local_mmr(UVH_RH_GAM_MMIOH_OVERLAY_CONFIG1); 1124 if (unlikely(mmioh1.s.enable == 0)) 1125 pr_info("UV: MMIOH1 disabled\n"); 1126 else { 1127 unsigned long base = uvxy_field(mmioh1, base, 0); 1128 int m_io = uvxy_field(mmioh1, m_io, 0); 1129 int n_io = uvxy_field(mmioh1, n_io, 0); 1130 1131 calc_mmioh_map(UVX_MMIOH1, min_pnode, max_pnode, 1132 UVH_RH_GAM_MMIOH_OVERLAY_CONFIG1_BASE_SHFT, 1133 base, m_io, n_io); 1134 } 1135 return; 1136 } 1137 1138 /* UV2 flavor */ 1139 if (UVH_RH_GAM_MMIOH_OVERLAY_CONFIG) { 1140 union uvh_rh_gam_mmioh_overlay_config_u mmioh; 1141 1142 mmioh.v = uv_read_local_mmr(UVH_RH_GAM_MMIOH_OVERLAY_CONFIG); 1143 if (unlikely(mmioh.s2.enable == 0)) 1144 pr_info("UV: MMIOH disabled\n"); 1145 else 1146 calc_mmioh_map(UV2_MMIOH, min_pnode, max_pnode, 1147 UV2H_RH_GAM_MMIOH_OVERLAY_CONFIG_BASE_SHFT, 1148 mmioh.s2.base, mmioh.s2.m_io, mmioh.s2.n_io); 1149 return; 1150 } 1151 } 1152 1153 static __init void map_low_mmrs(void) 1154 { 1155 if (UV_GLOBAL_MMR32_BASE) 1156 init_extra_mapping_uc(UV_GLOBAL_MMR32_BASE, UV_GLOBAL_MMR32_SIZE); 1157 1158 if (UV_LOCAL_MMR_BASE) 1159 init_extra_mapping_uc(UV_LOCAL_MMR_BASE, UV_LOCAL_MMR_SIZE); 1160 } 1161 1162 static __init void uv_rtc_init(void) 1163 { 1164 long status; 1165 u64 ticks_per_sec; 1166 1167 status = uv_bios_freq_base(BIOS_FREQ_BASE_REALTIME_CLOCK, &ticks_per_sec); 1168 1169 if (status != BIOS_STATUS_SUCCESS || ticks_per_sec < 100000) { 1170 pr_warn("UV: unable to determine platform RTC clock frequency, guessing.\n"); 1171 1172 /* BIOS gives wrong value for clock frequency, so guess: */ 1173 sn_rtc_cycles_per_second = 1000000000000UL / 30000UL; 1174 } else { 1175 sn_rtc_cycles_per_second = ticks_per_sec; 1176 } 1177 } 1178 1179 /* Direct Legacy VGA I/O traffic to designated IOH */ 1180 static int uv_set_vga_state(struct pci_dev *pdev, bool decode, unsigned int command_bits, u32 flags) 1181 { 1182 int domain, bus, rc; 1183 1184 if (!(flags & PCI_VGA_STATE_CHANGE_BRIDGE)) 1185 return 0; 1186 1187 if ((command_bits & PCI_COMMAND_IO) == 0) 1188 return 0; 1189 1190 domain = pci_domain_nr(pdev->bus); 1191 bus = pdev->bus->number; 1192 1193 rc = uv_bios_set_legacy_vga_target(decode, domain, bus); 1194 1195 return rc; 1196 } 1197 1198 /* 1199 * Called on each CPU to initialize the per_cpu UV data area. 1200 * FIXME: hotplug not supported yet 1201 */ 1202 void uv_cpu_init(void) 1203 { 1204 /* CPU 0 initialization will be done via uv_system_init. */ 1205 if (smp_processor_id() == 0) 1206 return; 1207 1208 uv_hub_info->nr_online_cpus++; 1209 } 1210 1211 struct mn { 1212 unsigned char m_val; 1213 unsigned char n_val; 1214 unsigned char m_shift; 1215 unsigned char n_lshift; 1216 }; 1217 1218 /* Initialize caller's MN struct and fill in values */ 1219 static void get_mn(struct mn *mnp) 1220 { 1221 memset(mnp, 0, sizeof(*mnp)); 1222 mnp->n_val = uv_cpuid.n_skt; 1223 if (is_uv(UV4|UVY)) { 1224 mnp->m_val = 0; 1225 mnp->n_lshift = 0; 1226 } else if (is_uv3_hub()) { 1227 union uvyh_gr0_gam_gr_config_u m_gr_config; 1228 1229 mnp->m_val = uv_cpuid.m_skt; 1230 m_gr_config.v = uv_read_local_mmr(UVH_GR0_GAM_GR_CONFIG); 1231 mnp->n_lshift = m_gr_config.s3.m_skt; 1232 } else if (is_uv2_hub()) { 1233 mnp->m_val = uv_cpuid.m_skt; 1234 mnp->n_lshift = mnp->m_val == 40 ? 40 : 39; 1235 } 1236 mnp->m_shift = mnp->m_val ? 64 - mnp->m_val : 0; 1237 } 1238 1239 static void __init uv_init_hub_info(struct uv_hub_info_s *hi) 1240 { 1241 struct mn mn; 1242 1243 get_mn(&mn); 1244 hi->gpa_mask = mn.m_val ? 1245 (1UL << (mn.m_val + mn.n_val)) - 1 : 1246 (1UL << uv_cpuid.gpa_shift) - 1; 1247 1248 hi->m_val = mn.m_val; 1249 hi->n_val = mn.n_val; 1250 hi->m_shift = mn.m_shift; 1251 hi->n_lshift = mn.n_lshift ? mn.n_lshift : 0; 1252 hi->hub_revision = uv_hub_info->hub_revision; 1253 hi->hub_type = uv_hub_info->hub_type; 1254 hi->pnode_mask = uv_cpuid.pnode_mask; 1255 hi->nasid_shift = uv_cpuid.nasid_shift; 1256 hi->min_pnode = _min_pnode; 1257 hi->min_socket = _min_socket; 1258 hi->node_to_socket = _node_to_socket; 1259 hi->pnode_to_socket = _pnode_to_socket; 1260 hi->socket_to_node = _socket_to_node; 1261 hi->socket_to_pnode = _socket_to_pnode; 1262 hi->gr_table_len = _gr_table_len; 1263 hi->gr_table = _gr_table; 1264 1265 uv_cpuid.gnode_shift = max_t(unsigned int, uv_cpuid.gnode_shift, mn.n_val); 1266 hi->gnode_extra = (uv_node_id & ~((1 << uv_cpuid.gnode_shift) - 1)) >> 1; 1267 if (mn.m_val) 1268 hi->gnode_upper = (u64)hi->gnode_extra << mn.m_val; 1269 1270 if (uv_gp_table) { 1271 hi->global_mmr_base = uv_gp_table->mmr_base; 1272 hi->global_mmr_shift = uv_gp_table->mmr_shift; 1273 hi->global_gru_base = uv_gp_table->gru_base; 1274 hi->global_gru_shift = uv_gp_table->gru_shift; 1275 hi->gpa_shift = uv_gp_table->gpa_shift; 1276 hi->gpa_mask = (1UL << hi->gpa_shift) - 1; 1277 } else { 1278 hi->global_mmr_base = 1279 uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG) & 1280 ~UV_MMR_ENABLE; 1281 hi->global_mmr_shift = _UV_GLOBAL_MMR64_PNODE_SHIFT; 1282 } 1283 1284 get_lowmem_redirect(&hi->lowmem_remap_base, &hi->lowmem_remap_top); 1285 1286 hi->apic_pnode_shift = uv_cpuid.socketid_shift; 1287 1288 /* Show system specific info: */ 1289 pr_info("UV: N:%d M:%d m_shift:%d n_lshift:%d\n", hi->n_val, hi->m_val, hi->m_shift, hi->n_lshift); 1290 pr_info("UV: gpa_mask/shift:0x%lx/%d pnode_mask:0x%x apic_pns:%d\n", hi->gpa_mask, hi->gpa_shift, hi->pnode_mask, hi->apic_pnode_shift); 1291 pr_info("UV: mmr_base/shift:0x%lx/%ld\n", hi->global_mmr_base, hi->global_mmr_shift); 1292 if (hi->global_gru_base) 1293 pr_info("UV: gru_base/shift:0x%lx/%ld\n", 1294 hi->global_gru_base, hi->global_gru_shift); 1295 1296 pr_info("UV: gnode_upper:0x%lx gnode_extra:0x%x\n", hi->gnode_upper, hi->gnode_extra); 1297 } 1298 1299 static void __init decode_gam_params(unsigned long ptr) 1300 { 1301 uv_gp_table = (struct uv_gam_parameters *)ptr; 1302 1303 pr_info("UV: GAM Params...\n"); 1304 pr_info("UV: mmr_base/shift:0x%llx/%d gru_base/shift:0x%llx/%d gpa_shift:%d\n", 1305 uv_gp_table->mmr_base, uv_gp_table->mmr_shift, 1306 uv_gp_table->gru_base, uv_gp_table->gru_shift, 1307 uv_gp_table->gpa_shift); 1308 } 1309 1310 static void __init decode_gam_rng_tbl(unsigned long ptr) 1311 { 1312 struct uv_gam_range_entry *gre = (struct uv_gam_range_entry *)ptr; 1313 unsigned long lgre = 0, gend = 0; 1314 int index = 0; 1315 int sock_min = INT_MAX, pnode_min = INT_MAX; 1316 int sock_max = -1, pnode_max = -1; 1317 1318 uv_gre_table = gre; 1319 for (; gre->type != UV_GAM_RANGE_TYPE_UNUSED; gre++) { 1320 unsigned long size = ((unsigned long)(gre->limit - lgre) 1321 << UV_GAM_RANGE_SHFT); 1322 int order = 0; 1323 char suffix[] = " KMGTPE"; 1324 int flag = ' '; 1325 1326 while (size > 9999 && order < sizeof(suffix)) { 1327 size /= 1024; 1328 order++; 1329 } 1330 1331 /* adjust max block size to current range start */ 1332 if (gre->type == 1 || gre->type == 2) 1333 if (adj_blksize(lgre)) 1334 flag = '*'; 1335 1336 if (!index) { 1337 pr_info("UV: GAM Range Table...\n"); 1338 pr_info("UV: # %20s %14s %6s %4s %5s %3s %2s\n", "Range", "", "Size", "Type", "NASID", "SID", "PN"); 1339 } 1340 pr_info("UV: %2d: 0x%014lx-0x%014lx%c %5lu%c %3d %04x %02x %02x\n", 1341 index++, 1342 (unsigned long)lgre << UV_GAM_RANGE_SHFT, 1343 (unsigned long)gre->limit << UV_GAM_RANGE_SHFT, 1344 flag, size, suffix[order], 1345 gre->type, gre->nasid, gre->sockid, gre->pnode); 1346 1347 if (gre->type == UV_GAM_RANGE_TYPE_HOLE) 1348 gend = (unsigned long)gre->limit << UV_GAM_RANGE_SHFT; 1349 1350 /* update to next range start */ 1351 lgre = gre->limit; 1352 if (sock_min > gre->sockid) 1353 sock_min = gre->sockid; 1354 if (sock_max < gre->sockid) 1355 sock_max = gre->sockid; 1356 if (pnode_min > gre->pnode) 1357 pnode_min = gre->pnode; 1358 if (pnode_max < gre->pnode) 1359 pnode_max = gre->pnode; 1360 } 1361 _min_socket = sock_min; 1362 _max_socket = sock_max; 1363 _min_pnode = pnode_min; 1364 _max_pnode = pnode_max; 1365 _gr_table_len = index; 1366 1367 pr_info("UV: GRT: %d entries, sockets(min:%x,max:%x), pnodes(min:%x,max:%x), gap_end(%d)\n", 1368 index, _min_socket, _max_socket, _min_pnode, _max_pnode, fls64(gend)); 1369 } 1370 1371 /* Walk through UVsystab decoding the fields */ 1372 static int __init decode_uv_systab(void) 1373 { 1374 struct uv_systab *st; 1375 int i; 1376 1377 /* Get mapped UVsystab pointer */ 1378 st = uv_systab; 1379 1380 /* If UVsystab is version 1, there is no extended UVsystab */ 1381 if (st && st->revision == UV_SYSTAB_VERSION_1) 1382 return 0; 1383 1384 if ((!st) || (st->revision < UV_SYSTAB_VERSION_UV4_LATEST)) { 1385 int rev = st ? st->revision : 0; 1386 1387 pr_err("UV: BIOS UVsystab mismatch, (%x < %x)\n", 1388 rev, UV_SYSTAB_VERSION_UV4_LATEST); 1389 pr_err("UV: Does not support UV, switch to non-UV x86_64\n"); 1390 uv_system_type = UV_NONE; 1391 1392 return -EINVAL; 1393 } 1394 1395 for (i = 0; st->entry[i].type != UV_SYSTAB_TYPE_UNUSED; i++) { 1396 unsigned long ptr = st->entry[i].offset; 1397 1398 if (!ptr) 1399 continue; 1400 1401 /* point to payload */ 1402 ptr += (unsigned long)st; 1403 1404 switch (st->entry[i].type) { 1405 case UV_SYSTAB_TYPE_GAM_PARAMS: 1406 decode_gam_params(ptr); 1407 break; 1408 1409 case UV_SYSTAB_TYPE_GAM_RNG_TBL: 1410 decode_gam_rng_tbl(ptr); 1411 break; 1412 1413 case UV_SYSTAB_TYPE_ARCH_TYPE: 1414 /* already processed in early startup */ 1415 break; 1416 1417 default: 1418 pr_err("UV:%s:Unrecognized UV_SYSTAB_TYPE:%d, skipped\n", 1419 __func__, st->entry[i].type); 1420 break; 1421 } 1422 } 1423 return 0; 1424 } 1425 1426 /* 1427 * Given a bitmask 'bits' representing presnt blades, numbered 1428 * starting at 'base', masking off unused high bits of blade number 1429 * with 'mask', update the minimum and maximum blade numbers that we 1430 * have found. (Masking with 'mask' necessary because of BIOS 1431 * treatment of system partitioning when creating this table we are 1432 * interpreting.) 1433 */ 1434 static inline void blade_update_min_max(unsigned long bits, int base, int mask, int *min, int *max) 1435 { 1436 int first, last; 1437 1438 if (!bits) 1439 return; 1440 first = (base + __ffs(bits)) & mask; 1441 last = (base + __fls(bits)) & mask; 1442 1443 if (*min > first) 1444 *min = first; 1445 if (*max < last) 1446 *max = last; 1447 } 1448 1449 /* Set up physical blade translations from UVH_NODE_PRESENT_TABLE */ 1450 static __init void boot_init_possible_blades(struct uv_hub_info_s *hub_info) 1451 { 1452 unsigned long np; 1453 int i, uv_pb = 0; 1454 int sock_min = INT_MAX, sock_max = -1, s_mask; 1455 1456 s_mask = (1 << uv_cpuid.n_skt) - 1; 1457 1458 if (UVH_NODE_PRESENT_TABLE) { 1459 pr_info("UV: NODE_PRESENT_DEPTH = %d\n", 1460 UVH_NODE_PRESENT_TABLE_DEPTH); 1461 for (i = 0; i < UVH_NODE_PRESENT_TABLE_DEPTH; i++) { 1462 np = uv_read_local_mmr(UVH_NODE_PRESENT_TABLE + i * 8); 1463 pr_info("UV: NODE_PRESENT(%d) = 0x%016lx\n", i, np); 1464 blade_update_min_max(np, i * 64, s_mask, &sock_min, &sock_max); 1465 } 1466 } 1467 if (UVH_NODE_PRESENT_0) { 1468 np = uv_read_local_mmr(UVH_NODE_PRESENT_0); 1469 pr_info("UV: NODE_PRESENT_0 = 0x%016lx\n", np); 1470 blade_update_min_max(np, 0, s_mask, &sock_min, &sock_max); 1471 } 1472 if (UVH_NODE_PRESENT_1) { 1473 np = uv_read_local_mmr(UVH_NODE_PRESENT_1); 1474 pr_info("UV: NODE_PRESENT_1 = 0x%016lx\n", np); 1475 blade_update_min_max(np, 64, s_mask, &sock_min, &sock_max); 1476 } 1477 1478 /* Only update if we actually found some bits indicating blades present */ 1479 if (sock_max >= sock_min) { 1480 _min_socket = sock_min; 1481 _max_socket = sock_max; 1482 uv_pb = sock_max - sock_min + 1; 1483 } 1484 if (uv_possible_blades != uv_pb) 1485 uv_possible_blades = uv_pb; 1486 1487 pr_info("UV: number nodes/possible blades %d (%d - %d)\n", 1488 uv_pb, sock_min, sock_max); 1489 } 1490 1491 static int __init alloc_conv_table(int num_elem, unsigned short **table) 1492 { 1493 int i; 1494 size_t bytes; 1495 1496 bytes = num_elem * sizeof(*table[0]); 1497 *table = kmalloc(bytes, GFP_KERNEL); 1498 if (WARN_ON_ONCE(!*table)) 1499 return -ENOMEM; 1500 for (i = 0; i < num_elem; i++) 1501 ((unsigned short *)*table)[i] = SOCK_EMPTY; 1502 return 0; 1503 } 1504 1505 /* Remove conversion table if it's 1:1 */ 1506 #define FREE_1_TO_1_TABLE(tbl, min, max, max2) free_1_to_1_table(&tbl, #tbl, min, max, max2) 1507 1508 static void __init free_1_to_1_table(unsigned short **tp, char *tname, int min, int max, int max2) 1509 { 1510 int i; 1511 unsigned short *table = *tp; 1512 1513 if (table == NULL) 1514 return; 1515 if (max != max2) 1516 return; 1517 for (i = 0; i < max; i++) { 1518 if (i != table[i]) 1519 return; 1520 } 1521 kfree(table); 1522 *tp = NULL; 1523 pr_info("UV: %s is 1:1, conversion table removed\n", tname); 1524 } 1525 1526 /* 1527 * Build Socket Tables 1528 * If the number of nodes is >1 per socket, socket to node table will 1529 * contain lowest node number on that socket. 1530 */ 1531 static void __init build_socket_tables(void) 1532 { 1533 struct uv_gam_range_entry *gre = uv_gre_table; 1534 int nums, numn, nump; 1535 int i, lnid, apicid; 1536 int minsock = _min_socket; 1537 int maxsock = _max_socket; 1538 int minpnode = _min_pnode; 1539 int maxpnode = _max_pnode; 1540 1541 if (!gre) { 1542 if (is_uv2_hub() || is_uv3_hub()) { 1543 pr_info("UV: No UVsystab socket table, ignoring\n"); 1544 return; 1545 } 1546 pr_err("UV: Error: UVsystab address translations not available!\n"); 1547 WARN_ON_ONCE(!gre); 1548 return; 1549 } 1550 1551 numn = num_possible_nodes(); 1552 nump = maxpnode - minpnode + 1; 1553 nums = maxsock - minsock + 1; 1554 1555 /* Allocate and clear tables */ 1556 if ((alloc_conv_table(nump, &_pnode_to_socket) < 0) 1557 || (alloc_conv_table(nums, &_socket_to_pnode) < 0) 1558 || (alloc_conv_table(numn, &_node_to_socket) < 0) 1559 || (alloc_conv_table(nums, &_socket_to_node) < 0)) { 1560 kfree(_pnode_to_socket); 1561 kfree(_socket_to_pnode); 1562 kfree(_node_to_socket); 1563 return; 1564 } 1565 1566 /* Fill in pnode/node/addr conversion list values: */ 1567 for (; gre->type != UV_GAM_RANGE_TYPE_UNUSED; gre++) { 1568 if (gre->type == UV_GAM_RANGE_TYPE_HOLE) 1569 continue; 1570 i = gre->sockid - minsock; 1571 if (_socket_to_pnode[i] == SOCK_EMPTY) 1572 _socket_to_pnode[i] = gre->pnode; 1573 1574 i = gre->pnode - minpnode; 1575 if (_pnode_to_socket[i] == SOCK_EMPTY) 1576 _pnode_to_socket[i] = gre->sockid; 1577 1578 pr_info("UV: sid:%02x type:%d nasid:%04x pn:%02x pn2s:%2x\n", 1579 gre->sockid, gre->type, gre->nasid, 1580 _socket_to_pnode[gre->sockid - minsock], 1581 _pnode_to_socket[gre->pnode - minpnode]); 1582 } 1583 1584 /* Set socket -> node values: */ 1585 lnid = NUMA_NO_NODE; 1586 for (apicid = 0; apicid < ARRAY_SIZE(__apicid_to_node); apicid++) { 1587 int nid = __apicid_to_node[apicid]; 1588 int sockid; 1589 1590 if ((nid == NUMA_NO_NODE) || (lnid == nid)) 1591 continue; 1592 lnid = nid; 1593 1594 sockid = apicid >> uv_cpuid.socketid_shift; 1595 1596 if (_socket_to_node[sockid - minsock] == SOCK_EMPTY) 1597 _socket_to_node[sockid - minsock] = nid; 1598 1599 if (_node_to_socket[nid] == SOCK_EMPTY) 1600 _node_to_socket[nid] = sockid; 1601 1602 pr_info("UV: sid:%02x: apicid:%04x socket:%02d node:%03x s2n:%03x\n", 1603 sockid, 1604 apicid, 1605 _node_to_socket[nid], 1606 nid, 1607 _socket_to_node[sockid - minsock]); 1608 } 1609 1610 /* 1611 * If e.g. socket id == pnode for all pnodes, 1612 * system runs faster by removing corresponding conversion table. 1613 */ 1614 FREE_1_TO_1_TABLE(_socket_to_node, _min_socket, nums, numn); 1615 FREE_1_TO_1_TABLE(_node_to_socket, _min_socket, nums, numn); 1616 FREE_1_TO_1_TABLE(_socket_to_pnode, _min_pnode, nums, nump); 1617 FREE_1_TO_1_TABLE(_pnode_to_socket, _min_pnode, nums, nump); 1618 } 1619 1620 /* Check which reboot to use */ 1621 static void check_efi_reboot(void) 1622 { 1623 /* If EFI reboot not available, use ACPI reboot */ 1624 if (!efi_enabled(EFI_BOOT)) 1625 reboot_type = BOOT_ACPI; 1626 } 1627 1628 /* 1629 * User proc fs file handling now deprecated. 1630 * Recommend using /sys/firmware/sgi_uv/... instead. 1631 */ 1632 static int __maybe_unused proc_hubbed_show(struct seq_file *file, void *data) 1633 { 1634 pr_notice_once("%s: using deprecated /proc/sgi_uv/hubbed, use /sys/firmware/sgi_uv/hub_type\n", 1635 current->comm); 1636 seq_printf(file, "0x%x\n", uv_hubbed_system); 1637 return 0; 1638 } 1639 1640 static int __maybe_unused proc_hubless_show(struct seq_file *file, void *data) 1641 { 1642 pr_notice_once("%s: using deprecated /proc/sgi_uv/hubless, use /sys/firmware/sgi_uv/hubless\n", 1643 current->comm); 1644 seq_printf(file, "0x%x\n", uv_hubless_system); 1645 return 0; 1646 } 1647 1648 static int __maybe_unused proc_archtype_show(struct seq_file *file, void *data) 1649 { 1650 pr_notice_once("%s: using deprecated /proc/sgi_uv/archtype, use /sys/firmware/sgi_uv/archtype\n", 1651 current->comm); 1652 seq_printf(file, "%s/%s\n", uv_archtype, oem_table_id); 1653 return 0; 1654 } 1655 1656 static __init void uv_setup_proc_files(int hubless) 1657 { 1658 struct proc_dir_entry *pde; 1659 1660 pde = proc_mkdir(UV_PROC_NODE, NULL); 1661 proc_create_single("archtype", 0, pde, proc_archtype_show); 1662 if (hubless) 1663 proc_create_single("hubless", 0, pde, proc_hubless_show); 1664 else 1665 proc_create_single("hubbed", 0, pde, proc_hubbed_show); 1666 } 1667 1668 /* Initialize UV hubless systems */ 1669 static __init int uv_system_init_hubless(void) 1670 { 1671 int rc; 1672 1673 /* Setup PCH NMI handler */ 1674 uv_nmi_setup_hubless(); 1675 1676 /* Init kernel/BIOS interface */ 1677 rc = uv_bios_init(); 1678 if (rc < 0) 1679 return rc; 1680 1681 /* Process UVsystab */ 1682 rc = decode_uv_systab(); 1683 if (rc < 0) 1684 return rc; 1685 1686 /* Set section block size for current node memory */ 1687 set_block_size(); 1688 1689 /* Create user access node */ 1690 if (rc >= 0) 1691 uv_setup_proc_files(1); 1692 1693 check_efi_reboot(); 1694 1695 return rc; 1696 } 1697 1698 static void __init uv_system_init_hub(void) 1699 { 1700 struct uv_hub_info_s hub_info = {0}; 1701 int bytes, cpu, nodeid, bid; 1702 unsigned short min_pnode = USHRT_MAX, max_pnode = 0; 1703 char *hub = is_uv5_hub() ? "UV500" : 1704 is_uv4_hub() ? "UV400" : 1705 is_uv3_hub() ? "UV300" : 1706 is_uv2_hub() ? "UV2000/3000" : NULL; 1707 struct uv_hub_info_s **uv_hub_info_list_blade; 1708 1709 if (!hub) { 1710 pr_err("UV: Unknown/unsupported UV hub\n"); 1711 return; 1712 } 1713 pr_info("UV: Found %s hub\n", hub); 1714 1715 map_low_mmrs(); 1716 1717 /* Get uv_systab for decoding, setup UV BIOS calls */ 1718 uv_bios_init(); 1719 1720 /* If there's an UVsystab problem then abort UV init: */ 1721 if (decode_uv_systab() < 0) { 1722 pr_err("UV: Mangled UVsystab format\n"); 1723 return; 1724 } 1725 1726 build_socket_tables(); 1727 build_uv_gr_table(); 1728 set_block_size(); 1729 uv_init_hub_info(&hub_info); 1730 /* If UV2 or UV3 may need to get # blades from HW */ 1731 if (is_uv(UV2|UV3) && !uv_gre_table) 1732 boot_init_possible_blades(&hub_info); 1733 else 1734 /* min/max sockets set in decode_gam_rng_tbl */ 1735 uv_possible_blades = (_max_socket - _min_socket) + 1; 1736 1737 /* uv_num_possible_blades() is really the hub count: */ 1738 pr_info("UV: Found %d hubs, %d nodes, %d CPUs\n", uv_num_possible_blades(), num_possible_nodes(), num_possible_cpus()); 1739 1740 uv_bios_get_sn_info(0, &uv_type, &sn_partition_id, &sn_coherency_id, &sn_region_size, &system_serial_number); 1741 hub_info.coherency_domain_number = sn_coherency_id; 1742 uv_rtc_init(); 1743 1744 /* 1745 * __uv_hub_info_list[] is indexed by node, but there is only 1746 * one hub_info structure per blade. First, allocate one 1747 * structure per blade. Further down we create a per-node 1748 * table (__uv_hub_info_list[]) pointing to hub_info 1749 * structures for the correct blade. 1750 */ 1751 1752 bytes = sizeof(void *) * uv_num_possible_blades(); 1753 uv_hub_info_list_blade = kzalloc(bytes, GFP_KERNEL); 1754 if (WARN_ON_ONCE(!uv_hub_info_list_blade)) 1755 return; 1756 1757 bytes = sizeof(struct uv_hub_info_s); 1758 for_each_possible_blade(bid) { 1759 struct uv_hub_info_s *new_hub; 1760 1761 /* Allocate & fill new per hub info list */ 1762 new_hub = (bid == 0) ? &uv_hub_info_node0 1763 : kzalloc_node(bytes, GFP_KERNEL, uv_blade_to_node(bid)); 1764 if (WARN_ON_ONCE(!new_hub)) { 1765 /* do not kfree() bid 0, which is statically allocated */ 1766 while (--bid > 0) 1767 kfree(uv_hub_info_list_blade[bid]); 1768 kfree(uv_hub_info_list_blade); 1769 return; 1770 } 1771 1772 uv_hub_info_list_blade[bid] = new_hub; 1773 *new_hub = hub_info; 1774 1775 /* Use information from GAM table if available: */ 1776 if (uv_gre_table) 1777 new_hub->pnode = uv_blade_to_pnode(bid); 1778 else /* Or fill in during CPU loop: */ 1779 new_hub->pnode = 0xffff; 1780 1781 new_hub->numa_blade_id = bid; 1782 new_hub->memory_nid = NUMA_NO_NODE; 1783 new_hub->nr_possible_cpus = 0; 1784 new_hub->nr_online_cpus = 0; 1785 } 1786 1787 /* 1788 * Now populate __uv_hub_info_list[] for each node with the 1789 * pointer to the struct for the blade it resides on. 1790 */ 1791 1792 bytes = sizeof(void *) * num_possible_nodes(); 1793 __uv_hub_info_list = kzalloc(bytes, GFP_KERNEL); 1794 if (WARN_ON_ONCE(!__uv_hub_info_list)) { 1795 for_each_possible_blade(bid) 1796 /* bid 0 is statically allocated */ 1797 if (bid != 0) 1798 kfree(uv_hub_info_list_blade[bid]); 1799 kfree(uv_hub_info_list_blade); 1800 return; 1801 } 1802 1803 for_each_node(nodeid) 1804 __uv_hub_info_list[nodeid] = uv_hub_info_list_blade[uv_node_to_blade_id(nodeid)]; 1805 1806 /* Initialize per CPU info: */ 1807 for_each_possible_cpu(cpu) { 1808 int apicid = per_cpu(x86_cpu_to_apicid, cpu); 1809 unsigned short bid; 1810 unsigned short pnode; 1811 1812 pnode = uv_apicid_to_pnode(apicid); 1813 bid = uv_pnode_to_socket(pnode) - _min_socket; 1814 1815 uv_cpu_info_per(cpu)->p_uv_hub_info = uv_hub_info_list_blade[bid]; 1816 uv_cpu_info_per(cpu)->blade_cpu_id = uv_cpu_hub_info(cpu)->nr_possible_cpus++; 1817 if (uv_cpu_hub_info(cpu)->memory_nid == NUMA_NO_NODE) 1818 uv_cpu_hub_info(cpu)->memory_nid = cpu_to_node(cpu); 1819 1820 if (uv_cpu_hub_info(cpu)->pnode == 0xffff) 1821 uv_cpu_hub_info(cpu)->pnode = pnode; 1822 } 1823 1824 for_each_possible_blade(bid) { 1825 unsigned short pnode = uv_hub_info_list_blade[bid]->pnode; 1826 1827 if (pnode == 0xffff) 1828 continue; 1829 1830 min_pnode = min(pnode, min_pnode); 1831 max_pnode = max(pnode, max_pnode); 1832 pr_info("UV: HUB:%2d pn:%02x nrcpus:%d\n", 1833 bid, 1834 uv_hub_info_list_blade[bid]->pnode, 1835 uv_hub_info_list_blade[bid]->nr_possible_cpus); 1836 } 1837 1838 pr_info("UV: min_pnode:%02x max_pnode:%02x\n", min_pnode, max_pnode); 1839 map_gru_high(max_pnode); 1840 map_mmr_high(max_pnode); 1841 map_mmioh_high(min_pnode, max_pnode); 1842 1843 kfree(uv_hub_info_list_blade); 1844 uv_hub_info_list_blade = NULL; 1845 1846 uv_nmi_setup(); 1847 uv_cpu_init(); 1848 uv_setup_proc_files(0); 1849 1850 /* Register Legacy VGA I/O redirection handler: */ 1851 pci_register_set_vga_state(uv_set_vga_state); 1852 1853 check_efi_reboot(); 1854 } 1855 1856 /* 1857 * There is a different code path needed to initialize a UV system that does 1858 * not have a "UV HUB" (referred to as "hubless"). 1859 */ 1860 void __init uv_system_init(void) 1861 { 1862 if (likely(!is_uv_system() && !is_uv_hubless(1))) 1863 return; 1864 1865 if (is_uv_system()) 1866 uv_system_init_hub(); 1867 else 1868 uv_system_init_hubless(); 1869 } 1870 1871 apic_driver(apic_x2apic_uv_x); 1872