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 uv_undefined(char * str)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 uv_early_read_mmr(unsigned long addr)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 is_GRU_range(u64 start,u64 end)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 uv_is_untracked_pat_range(u64 start,u64 end)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 early_get_pnodeid(void)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 */ early_set_hub_type(void)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 uv_tsc_check_sync(void)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 set_x2apic_bits(void)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 early_get_apic_socketid_shift(void)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 uv_stringify(int len,char * to,char * from)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 */ early_find_archtype(struct uv_systab * st)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 */ decode_arch_type(unsigned long ptr)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 */ early_get_arch_type(void)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 */ early_set_apic_mode(void)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 uv_set_system_type(char * _oem_id,char * _oem_table_id)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 */ uv_acpi_madt_oem_check(char * _oem_id,char * _oem_table_id)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 get_uv_system_type(void)503 enum uv_system_type get_uv_system_type(void) 504 { 505 return uv_system_type; 506 } 507 uv_get_hubless_system(void)508 int uv_get_hubless_system(void) 509 { 510 return uv_hubless_system; 511 } 512 EXPORT_SYMBOL_GPL(uv_get_hubless_system); 513 uv_get_archtype(char * buf,int len)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 is_uv_system(void)520 int is_uv_system(void) 521 { 522 return uv_system_type != UV_NONE; 523 } 524 EXPORT_SYMBOL_GPL(is_uv_system); 525 is_uv_hubbed(int uvtype)526 int is_uv_hubbed(int uvtype) 527 { 528 return (uv_hubbed_system & uvtype); 529 } 530 EXPORT_SYMBOL_GPL(is_uv_hubbed); 531 is_uv_hubless(int uvtype)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 */ parse_mem_block_size(char * ptr)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 adj_blksize(u32 lgre)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 set_block_size(void)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: */ build_uv_gr_table(void)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 uv_wakeup_secondary(int phys_apicid,unsigned long start_rip)704 static int uv_wakeup_secondary(int 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 uv_send_IPI_one(int cpu,int vector)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 uv_send_IPI_mask(const struct cpumask * mask,int vector)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 uv_send_IPI_mask_allbutself(const struct cpumask * mask,int vector)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 uv_send_IPI_allbutself(int vector)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 uv_send_IPI_all(int vector)777 static void uv_send_IPI_all(int vector) 778 { 779 uv_send_IPI_mask(cpu_online_mask, vector); 780 } 781 set_apic_id(unsigned int id)782 static u32 set_apic_id(unsigned int id) 783 { 784 return id; 785 } 786 uv_read_apic_id(void)787 static unsigned int uv_read_apic_id(void) 788 { 789 return x2apic_get_apic_id(apic_read(APIC_ID)); 790 } 791 uv_phys_pkg_id(int initial_apicid,int index_msb)792 static int uv_phys_pkg_id(int initial_apicid, int index_msb) 793 { 794 return uv_read_apic_id() >> index_msb; 795 } 796 uv_probe(void)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 .delivery_mode = APIC_DELIVERY_MODE_FIXED, 809 .dest_mode_logical = false, 810 811 .disable_esr = 0, 812 813 .cpu_present_to_apicid = default_cpu_present_to_apicid, 814 .phys_pkg_id = uv_phys_pkg_id, 815 816 .max_apic_id = UINT_MAX, 817 .get_apic_id = x2apic_get_apic_id, 818 .set_apic_id = set_apic_id, 819 820 .calc_dest_apicid = apic_default_calc_apicid, 821 822 .send_IPI = uv_send_IPI_one, 823 .send_IPI_mask = uv_send_IPI_mask, 824 .send_IPI_mask_allbutself = uv_send_IPI_mask_allbutself, 825 .send_IPI_allbutself = uv_send_IPI_allbutself, 826 .send_IPI_all = uv_send_IPI_all, 827 .send_IPI_self = x2apic_send_IPI_self, 828 829 .wakeup_secondary_cpu = uv_wakeup_secondary, 830 831 .read = native_apic_msr_read, 832 .write = native_apic_msr_write, 833 .eoi = native_apic_msr_eoi, 834 .icr_read = native_x2apic_icr_read, 835 .icr_write = native_x2apic_icr_write, 836 }; 837 838 #define UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_LENGTH 3 839 #define DEST_SHIFT UVXH_RH_GAM_ALIAS_0_REDIRECT_CONFIG_DEST_BASE_SHFT 840 get_lowmem_redirect(unsigned long * base,unsigned long * size)841 static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size) 842 { 843 union uvh_rh_gam_alias_2_overlay_config_u alias; 844 union uvh_rh_gam_alias_2_redirect_config_u redirect; 845 unsigned long m_redirect; 846 unsigned long m_overlay; 847 int i; 848 849 for (i = 0; i < UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_LENGTH; i++) { 850 switch (i) { 851 case 0: 852 m_redirect = UVH_RH_GAM_ALIAS_0_REDIRECT_CONFIG; 853 m_overlay = UVH_RH_GAM_ALIAS_0_OVERLAY_CONFIG; 854 break; 855 case 1: 856 m_redirect = UVH_RH_GAM_ALIAS_1_REDIRECT_CONFIG; 857 m_overlay = UVH_RH_GAM_ALIAS_1_OVERLAY_CONFIG; 858 break; 859 case 2: 860 m_redirect = UVH_RH_GAM_ALIAS_2_REDIRECT_CONFIG; 861 m_overlay = UVH_RH_GAM_ALIAS_2_OVERLAY_CONFIG; 862 break; 863 } 864 alias.v = uv_read_local_mmr(m_overlay); 865 if (alias.s.enable && alias.s.base == 0) { 866 *size = (1UL << alias.s.m_alias); 867 redirect.v = uv_read_local_mmr(m_redirect); 868 *base = (unsigned long)redirect.s.dest_base << DEST_SHIFT; 869 return; 870 } 871 } 872 *base = *size = 0; 873 } 874 875 enum map_type {map_wb, map_uc}; 876 static const char * const mt[] = { "WB", "UC" }; 877 map_high(char * id,unsigned long base,int pshift,int bshift,int max_pnode,enum map_type map_type)878 static __init void map_high(char *id, unsigned long base, int pshift, int bshift, int max_pnode, enum map_type map_type) 879 { 880 unsigned long bytes, paddr; 881 882 paddr = base << pshift; 883 bytes = (1UL << bshift) * (max_pnode + 1); 884 if (!paddr) { 885 pr_info("UV: Map %s_HI base address NULL\n", id); 886 return; 887 } 888 if (map_type == map_uc) 889 init_extra_mapping_uc(paddr, bytes); 890 else 891 init_extra_mapping_wb(paddr, bytes); 892 893 pr_info("UV: Map %s_HI 0x%lx - 0x%lx %s (%d segments)\n", 894 id, paddr, paddr + bytes, mt[map_type], max_pnode + 1); 895 } 896 map_gru_high(int max_pnode)897 static __init void map_gru_high(int max_pnode) 898 { 899 union uvh_rh_gam_gru_overlay_config_u gru; 900 unsigned long mask, base; 901 int shift; 902 903 if (UVH_RH_GAM_GRU_OVERLAY_CONFIG) { 904 gru.v = uv_read_local_mmr(UVH_RH_GAM_GRU_OVERLAY_CONFIG); 905 shift = UVH_RH_GAM_GRU_OVERLAY_CONFIG_BASE_SHFT; 906 mask = UVH_RH_GAM_GRU_OVERLAY_CONFIG_BASE_MASK; 907 } else if (UVH_RH10_GAM_GRU_OVERLAY_CONFIG) { 908 gru.v = uv_read_local_mmr(UVH_RH10_GAM_GRU_OVERLAY_CONFIG); 909 shift = UVH_RH10_GAM_GRU_OVERLAY_CONFIG_BASE_SHFT; 910 mask = UVH_RH10_GAM_GRU_OVERLAY_CONFIG_BASE_MASK; 911 } else { 912 pr_err("UV: GRU unavailable (no MMR)\n"); 913 return; 914 } 915 916 if (!gru.s.enable) { 917 pr_info("UV: GRU disabled (by BIOS)\n"); 918 return; 919 } 920 921 base = (gru.v & mask) >> shift; 922 map_high("GRU", base, shift, shift, max_pnode, map_wb); 923 gru_start_paddr = ((u64)base << shift); 924 gru_end_paddr = gru_start_paddr + (1UL << shift) * (max_pnode + 1); 925 } 926 map_mmr_high(int max_pnode)927 static __init void map_mmr_high(int max_pnode) 928 { 929 unsigned long base; 930 int shift; 931 bool enable; 932 933 if (UVH_RH10_GAM_MMR_OVERLAY_CONFIG) { 934 union uvh_rh10_gam_mmr_overlay_config_u mmr; 935 936 mmr.v = uv_read_local_mmr(UVH_RH10_GAM_MMR_OVERLAY_CONFIG); 937 enable = mmr.s.enable; 938 base = mmr.s.base; 939 shift = UVH_RH10_GAM_MMR_OVERLAY_CONFIG_BASE_SHFT; 940 } else if (UVH_RH_GAM_MMR_OVERLAY_CONFIG) { 941 union uvh_rh_gam_mmr_overlay_config_u mmr; 942 943 mmr.v = uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG); 944 enable = mmr.s.enable; 945 base = mmr.s.base; 946 shift = UVH_RH_GAM_MMR_OVERLAY_CONFIG_BASE_SHFT; 947 } else { 948 pr_err("UV:%s:RH_GAM_MMR_OVERLAY_CONFIG MMR undefined?\n", 949 __func__); 950 return; 951 } 952 953 if (enable) 954 map_high("MMR", base, shift, shift, max_pnode, map_uc); 955 else 956 pr_info("UV: MMR disabled\n"); 957 } 958 959 /* Arch specific ENUM cases */ 960 enum mmioh_arch { 961 UV2_MMIOH = -1, 962 UVY_MMIOH0, UVY_MMIOH1, 963 UVX_MMIOH0, UVX_MMIOH1, 964 }; 965 966 /* Calculate and Map MMIOH Regions */ calc_mmioh_map(enum mmioh_arch index,int min_pnode,int max_pnode,int shift,unsigned long base,int m_io,int n_io)967 static void __init calc_mmioh_map(enum mmioh_arch index, 968 int min_pnode, int max_pnode, 969 int shift, unsigned long base, int m_io, int n_io) 970 { 971 unsigned long mmr, nasid_mask; 972 int nasid, min_nasid, max_nasid, lnasid, mapped; 973 int i, fi, li, n, max_io; 974 char id[8]; 975 976 /* One (UV2) mapping */ 977 if (index == UV2_MMIOH) { 978 strscpy(id, "MMIOH", sizeof(id)); 979 max_io = max_pnode; 980 mapped = 0; 981 goto map_exit; 982 } 983 984 /* small and large MMIOH mappings */ 985 switch (index) { 986 case UVY_MMIOH0: 987 mmr = UVH_RH10_GAM_MMIOH_REDIRECT_CONFIG0; 988 nasid_mask = UVYH_RH10_GAM_MMIOH_REDIRECT_CONFIG0_NASID_MASK; 989 n = UVH_RH10_GAM_MMIOH_REDIRECT_CONFIG0_DEPTH; 990 min_nasid = min_pnode; 991 max_nasid = max_pnode; 992 mapped = 1; 993 break; 994 case UVY_MMIOH1: 995 mmr = UVH_RH10_GAM_MMIOH_REDIRECT_CONFIG1; 996 nasid_mask = UVYH_RH10_GAM_MMIOH_REDIRECT_CONFIG1_NASID_MASK; 997 n = UVH_RH10_GAM_MMIOH_REDIRECT_CONFIG1_DEPTH; 998 min_nasid = min_pnode; 999 max_nasid = max_pnode; 1000 mapped = 1; 1001 break; 1002 case UVX_MMIOH0: 1003 mmr = UVH_RH_GAM_MMIOH_REDIRECT_CONFIG0; 1004 nasid_mask = UVH_RH_GAM_MMIOH_REDIRECT_CONFIG0_NASID_MASK; 1005 n = UVH_RH_GAM_MMIOH_REDIRECT_CONFIG0_DEPTH; 1006 min_nasid = min_pnode * 2; 1007 max_nasid = max_pnode * 2; 1008 mapped = 1; 1009 break; 1010 case UVX_MMIOH1: 1011 mmr = UVH_RH_GAM_MMIOH_REDIRECT_CONFIG1; 1012 nasid_mask = UVH_RH_GAM_MMIOH_REDIRECT_CONFIG1_NASID_MASK; 1013 n = UVH_RH_GAM_MMIOH_REDIRECT_CONFIG1_DEPTH; 1014 min_nasid = min_pnode * 2; 1015 max_nasid = max_pnode * 2; 1016 mapped = 1; 1017 break; 1018 default: 1019 pr_err("UV:%s:Invalid mapping type:%d\n", __func__, index); 1020 return; 1021 } 1022 1023 /* enum values chosen so (index mod 2) is MMIOH 0/1 (low/high) */ 1024 snprintf(id, sizeof(id), "MMIOH%d", index%2); 1025 1026 max_io = lnasid = fi = li = -1; 1027 for (i = 0; i < n; i++) { 1028 unsigned long m_redirect = mmr + i * 8; 1029 unsigned long redirect = uv_read_local_mmr(m_redirect); 1030 1031 nasid = redirect & nasid_mask; 1032 if (i == 0) 1033 pr_info("UV: %s redirect base 0x%lx(@0x%lx) 0x%04x\n", 1034 id, redirect, m_redirect, nasid); 1035 1036 /* Invalid NASID check */ 1037 if (nasid < min_nasid || max_nasid < nasid) { 1038 /* Not an error: unused table entries get "poison" values */ 1039 pr_debug("UV:%s:Invalid NASID(%x):%x (range:%x..%x)\n", 1040 __func__, index, nasid, min_nasid, max_nasid); 1041 nasid = -1; 1042 } 1043 1044 if (nasid == lnasid) { 1045 li = i; 1046 /* Last entry check: */ 1047 if (i != n-1) 1048 continue; 1049 } 1050 1051 /* Check if we have a cached (or last) redirect to print: */ 1052 if (lnasid != -1 || (i == n-1 && nasid != -1)) { 1053 unsigned long addr1, addr2; 1054 int f, l; 1055 1056 if (lnasid == -1) { 1057 f = l = i; 1058 lnasid = nasid; 1059 } else { 1060 f = fi; 1061 l = li; 1062 } 1063 addr1 = (base << shift) + f * (1ULL << m_io); 1064 addr2 = (base << shift) + (l + 1) * (1ULL << m_io); 1065 pr_info("UV: %s[%03d..%03d] NASID 0x%04x ADDR 0x%016lx - 0x%016lx\n", 1066 id, fi, li, lnasid, addr1, addr2); 1067 if (max_io < l) 1068 max_io = l; 1069 } 1070 fi = li = i; 1071 lnasid = nasid; 1072 } 1073 1074 map_exit: 1075 pr_info("UV: %s base:0x%lx shift:%d m_io:%d max_io:%d max_pnode:0x%x\n", 1076 id, base, shift, m_io, max_io, max_pnode); 1077 1078 if (max_io >= 0 && !mapped) 1079 map_high(id, base, shift, m_io, max_io, map_uc); 1080 } 1081 map_mmioh_high(int min_pnode,int max_pnode)1082 static __init void map_mmioh_high(int min_pnode, int max_pnode) 1083 { 1084 /* UVY flavor */ 1085 if (UVH_RH10_GAM_MMIOH_OVERLAY_CONFIG0) { 1086 union uvh_rh10_gam_mmioh_overlay_config0_u mmioh0; 1087 union uvh_rh10_gam_mmioh_overlay_config1_u mmioh1; 1088 1089 mmioh0.v = uv_read_local_mmr(UVH_RH10_GAM_MMIOH_OVERLAY_CONFIG0); 1090 if (unlikely(mmioh0.s.enable == 0)) 1091 pr_info("UV: MMIOH0 disabled\n"); 1092 else 1093 calc_mmioh_map(UVY_MMIOH0, min_pnode, max_pnode, 1094 UVH_RH10_GAM_MMIOH_OVERLAY_CONFIG0_BASE_SHFT, 1095 mmioh0.s.base, mmioh0.s.m_io, mmioh0.s.n_io); 1096 1097 mmioh1.v = uv_read_local_mmr(UVH_RH10_GAM_MMIOH_OVERLAY_CONFIG1); 1098 if (unlikely(mmioh1.s.enable == 0)) 1099 pr_info("UV: MMIOH1 disabled\n"); 1100 else 1101 calc_mmioh_map(UVY_MMIOH1, min_pnode, max_pnode, 1102 UVH_RH10_GAM_MMIOH_OVERLAY_CONFIG1_BASE_SHFT, 1103 mmioh1.s.base, mmioh1.s.m_io, mmioh1.s.n_io); 1104 return; 1105 } 1106 /* UVX flavor */ 1107 if (UVH_RH_GAM_MMIOH_OVERLAY_CONFIG0) { 1108 union uvh_rh_gam_mmioh_overlay_config0_u mmioh0; 1109 union uvh_rh_gam_mmioh_overlay_config1_u mmioh1; 1110 1111 mmioh0.v = uv_read_local_mmr(UVH_RH_GAM_MMIOH_OVERLAY_CONFIG0); 1112 if (unlikely(mmioh0.s.enable == 0)) 1113 pr_info("UV: MMIOH0 disabled\n"); 1114 else { 1115 unsigned long base = uvxy_field(mmioh0, base, 0); 1116 int m_io = uvxy_field(mmioh0, m_io, 0); 1117 int n_io = uvxy_field(mmioh0, n_io, 0); 1118 1119 calc_mmioh_map(UVX_MMIOH0, min_pnode, max_pnode, 1120 UVH_RH_GAM_MMIOH_OVERLAY_CONFIG0_BASE_SHFT, 1121 base, m_io, n_io); 1122 } 1123 1124 mmioh1.v = uv_read_local_mmr(UVH_RH_GAM_MMIOH_OVERLAY_CONFIG1); 1125 if (unlikely(mmioh1.s.enable == 0)) 1126 pr_info("UV: MMIOH1 disabled\n"); 1127 else { 1128 unsigned long base = uvxy_field(mmioh1, base, 0); 1129 int m_io = uvxy_field(mmioh1, m_io, 0); 1130 int n_io = uvxy_field(mmioh1, n_io, 0); 1131 1132 calc_mmioh_map(UVX_MMIOH1, min_pnode, max_pnode, 1133 UVH_RH_GAM_MMIOH_OVERLAY_CONFIG1_BASE_SHFT, 1134 base, m_io, n_io); 1135 } 1136 return; 1137 } 1138 1139 /* UV2 flavor */ 1140 if (UVH_RH_GAM_MMIOH_OVERLAY_CONFIG) { 1141 union uvh_rh_gam_mmioh_overlay_config_u mmioh; 1142 1143 mmioh.v = uv_read_local_mmr(UVH_RH_GAM_MMIOH_OVERLAY_CONFIG); 1144 if (unlikely(mmioh.s2.enable == 0)) 1145 pr_info("UV: MMIOH disabled\n"); 1146 else 1147 calc_mmioh_map(UV2_MMIOH, min_pnode, max_pnode, 1148 UV2H_RH_GAM_MMIOH_OVERLAY_CONFIG_BASE_SHFT, 1149 mmioh.s2.base, mmioh.s2.m_io, mmioh.s2.n_io); 1150 return; 1151 } 1152 } 1153 map_low_mmrs(void)1154 static __init void map_low_mmrs(void) 1155 { 1156 if (UV_GLOBAL_MMR32_BASE) 1157 init_extra_mapping_uc(UV_GLOBAL_MMR32_BASE, UV_GLOBAL_MMR32_SIZE); 1158 1159 if (UV_LOCAL_MMR_BASE) 1160 init_extra_mapping_uc(UV_LOCAL_MMR_BASE, UV_LOCAL_MMR_SIZE); 1161 } 1162 uv_rtc_init(void)1163 static __init void uv_rtc_init(void) 1164 { 1165 long status; 1166 u64 ticks_per_sec; 1167 1168 status = uv_bios_freq_base(BIOS_FREQ_BASE_REALTIME_CLOCK, &ticks_per_sec); 1169 1170 if (status != BIOS_STATUS_SUCCESS || ticks_per_sec < 100000) { 1171 pr_warn("UV: unable to determine platform RTC clock frequency, guessing.\n"); 1172 1173 /* BIOS gives wrong value for clock frequency, so guess: */ 1174 sn_rtc_cycles_per_second = 1000000000000UL / 30000UL; 1175 } else { 1176 sn_rtc_cycles_per_second = ticks_per_sec; 1177 } 1178 } 1179 1180 /* Direct Legacy VGA I/O traffic to designated IOH */ uv_set_vga_state(struct pci_dev * pdev,bool decode,unsigned int command_bits,u32 flags)1181 static int uv_set_vga_state(struct pci_dev *pdev, bool decode, unsigned int command_bits, u32 flags) 1182 { 1183 int domain, bus, rc; 1184 1185 if (!(flags & PCI_VGA_STATE_CHANGE_BRIDGE)) 1186 return 0; 1187 1188 if ((command_bits & PCI_COMMAND_IO) == 0) 1189 return 0; 1190 1191 domain = pci_domain_nr(pdev->bus); 1192 bus = pdev->bus->number; 1193 1194 rc = uv_bios_set_legacy_vga_target(decode, domain, bus); 1195 1196 return rc; 1197 } 1198 1199 /* 1200 * Called on each CPU to initialize the per_cpu UV data area. 1201 * FIXME: hotplug not supported yet 1202 */ uv_cpu_init(void)1203 void uv_cpu_init(void) 1204 { 1205 /* CPU 0 initialization will be done via uv_system_init. */ 1206 if (smp_processor_id() == 0) 1207 return; 1208 1209 uv_hub_info->nr_online_cpus++; 1210 } 1211 1212 struct mn { 1213 unsigned char m_val; 1214 unsigned char n_val; 1215 unsigned char m_shift; 1216 unsigned char n_lshift; 1217 }; 1218 1219 /* Initialize caller's MN struct and fill in values */ get_mn(struct mn * mnp)1220 static void get_mn(struct mn *mnp) 1221 { 1222 memset(mnp, 0, sizeof(*mnp)); 1223 mnp->n_val = uv_cpuid.n_skt; 1224 if (is_uv(UV4|UVY)) { 1225 mnp->m_val = 0; 1226 mnp->n_lshift = 0; 1227 } else if (is_uv3_hub()) { 1228 union uvyh_gr0_gam_gr_config_u m_gr_config; 1229 1230 mnp->m_val = uv_cpuid.m_skt; 1231 m_gr_config.v = uv_read_local_mmr(UVH_GR0_GAM_GR_CONFIG); 1232 mnp->n_lshift = m_gr_config.s3.m_skt; 1233 } else if (is_uv2_hub()) { 1234 mnp->m_val = uv_cpuid.m_skt; 1235 mnp->n_lshift = mnp->m_val == 40 ? 40 : 39; 1236 } 1237 mnp->m_shift = mnp->m_val ? 64 - mnp->m_val : 0; 1238 } 1239 uv_init_hub_info(struct uv_hub_info_s * hi)1240 static void __init uv_init_hub_info(struct uv_hub_info_s *hi) 1241 { 1242 struct mn mn; 1243 1244 get_mn(&mn); 1245 hi->gpa_mask = mn.m_val ? 1246 (1UL << (mn.m_val + mn.n_val)) - 1 : 1247 (1UL << uv_cpuid.gpa_shift) - 1; 1248 1249 hi->m_val = mn.m_val; 1250 hi->n_val = mn.n_val; 1251 hi->m_shift = mn.m_shift; 1252 hi->n_lshift = mn.n_lshift ? mn.n_lshift : 0; 1253 hi->hub_revision = uv_hub_info->hub_revision; 1254 hi->hub_type = uv_hub_info->hub_type; 1255 hi->pnode_mask = uv_cpuid.pnode_mask; 1256 hi->nasid_shift = uv_cpuid.nasid_shift; 1257 hi->min_pnode = _min_pnode; 1258 hi->min_socket = _min_socket; 1259 hi->node_to_socket = _node_to_socket; 1260 hi->pnode_to_socket = _pnode_to_socket; 1261 hi->socket_to_node = _socket_to_node; 1262 hi->socket_to_pnode = _socket_to_pnode; 1263 hi->gr_table_len = _gr_table_len; 1264 hi->gr_table = _gr_table; 1265 1266 uv_cpuid.gnode_shift = max_t(unsigned int, uv_cpuid.gnode_shift, mn.n_val); 1267 hi->gnode_extra = (uv_node_id & ~((1 << uv_cpuid.gnode_shift) - 1)) >> 1; 1268 if (mn.m_val) 1269 hi->gnode_upper = (u64)hi->gnode_extra << mn.m_val; 1270 1271 if (uv_gp_table) { 1272 hi->global_mmr_base = uv_gp_table->mmr_base; 1273 hi->global_mmr_shift = uv_gp_table->mmr_shift; 1274 hi->global_gru_base = uv_gp_table->gru_base; 1275 hi->global_gru_shift = uv_gp_table->gru_shift; 1276 hi->gpa_shift = uv_gp_table->gpa_shift; 1277 hi->gpa_mask = (1UL << hi->gpa_shift) - 1; 1278 } else { 1279 hi->global_mmr_base = 1280 uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG) & 1281 ~UV_MMR_ENABLE; 1282 hi->global_mmr_shift = _UV_GLOBAL_MMR64_PNODE_SHIFT; 1283 } 1284 1285 get_lowmem_redirect(&hi->lowmem_remap_base, &hi->lowmem_remap_top); 1286 1287 hi->apic_pnode_shift = uv_cpuid.socketid_shift; 1288 1289 /* Show system specific info: */ 1290 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); 1291 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); 1292 pr_info("UV: mmr_base/shift:0x%lx/%ld\n", hi->global_mmr_base, hi->global_mmr_shift); 1293 if (hi->global_gru_base) 1294 pr_info("UV: gru_base/shift:0x%lx/%ld\n", 1295 hi->global_gru_base, hi->global_gru_shift); 1296 1297 pr_info("UV: gnode_upper:0x%lx gnode_extra:0x%x\n", hi->gnode_upper, hi->gnode_extra); 1298 } 1299 decode_gam_params(unsigned long ptr)1300 static void __init decode_gam_params(unsigned long ptr) 1301 { 1302 uv_gp_table = (struct uv_gam_parameters *)ptr; 1303 1304 pr_info("UV: GAM Params...\n"); 1305 pr_info("UV: mmr_base/shift:0x%llx/%d gru_base/shift:0x%llx/%d gpa_shift:%d\n", 1306 uv_gp_table->mmr_base, uv_gp_table->mmr_shift, 1307 uv_gp_table->gru_base, uv_gp_table->gru_shift, 1308 uv_gp_table->gpa_shift); 1309 } 1310 decode_gam_rng_tbl(unsigned long ptr)1311 static void __init decode_gam_rng_tbl(unsigned long ptr) 1312 { 1313 struct uv_gam_range_entry *gre = (struct uv_gam_range_entry *)ptr; 1314 unsigned long lgre = 0, gend = 0; 1315 int index = 0; 1316 int sock_min = INT_MAX, pnode_min = INT_MAX; 1317 int sock_max = -1, pnode_max = -1; 1318 1319 uv_gre_table = gre; 1320 for (; gre->type != UV_GAM_RANGE_TYPE_UNUSED; gre++) { 1321 unsigned long size = ((unsigned long)(gre->limit - lgre) 1322 << UV_GAM_RANGE_SHFT); 1323 int order = 0; 1324 char suffix[] = " KMGTPE"; 1325 int flag = ' '; 1326 1327 while (size > 9999 && order < sizeof(suffix)) { 1328 size /= 1024; 1329 order++; 1330 } 1331 1332 /* adjust max block size to current range start */ 1333 if (gre->type == 1 || gre->type == 2) 1334 if (adj_blksize(lgre)) 1335 flag = '*'; 1336 1337 if (!index) { 1338 pr_info("UV: GAM Range Table...\n"); 1339 pr_info("UV: # %20s %14s %6s %4s %5s %3s %2s\n", "Range", "", "Size", "Type", "NASID", "SID", "PN"); 1340 } 1341 pr_info("UV: %2d: 0x%014lx-0x%014lx%c %5lu%c %3d %04x %02x %02x\n", 1342 index++, 1343 (unsigned long)lgre << UV_GAM_RANGE_SHFT, 1344 (unsigned long)gre->limit << UV_GAM_RANGE_SHFT, 1345 flag, size, suffix[order], 1346 gre->type, gre->nasid, gre->sockid, gre->pnode); 1347 1348 if (gre->type == UV_GAM_RANGE_TYPE_HOLE) 1349 gend = (unsigned long)gre->limit << UV_GAM_RANGE_SHFT; 1350 1351 /* update to next range start */ 1352 lgre = gre->limit; 1353 if (sock_min > gre->sockid) 1354 sock_min = gre->sockid; 1355 if (sock_max < gre->sockid) 1356 sock_max = gre->sockid; 1357 if (pnode_min > gre->pnode) 1358 pnode_min = gre->pnode; 1359 if (pnode_max < gre->pnode) 1360 pnode_max = gre->pnode; 1361 } 1362 _min_socket = sock_min; 1363 _max_socket = sock_max; 1364 _min_pnode = pnode_min; 1365 _max_pnode = pnode_max; 1366 _gr_table_len = index; 1367 1368 pr_info("UV: GRT: %d entries, sockets(min:%x,max:%x), pnodes(min:%x,max:%x), gap_end(%d)\n", 1369 index, _min_socket, _max_socket, _min_pnode, _max_pnode, fls64(gend)); 1370 } 1371 1372 /* Walk through UVsystab decoding the fields */ decode_uv_systab(void)1373 static int __init decode_uv_systab(void) 1374 { 1375 struct uv_systab *st; 1376 int i; 1377 1378 /* Get mapped UVsystab pointer */ 1379 st = uv_systab; 1380 1381 /* If UVsystab is version 1, there is no extended UVsystab */ 1382 if (st && st->revision == UV_SYSTAB_VERSION_1) 1383 return 0; 1384 1385 if ((!st) || (st->revision < UV_SYSTAB_VERSION_UV4_LATEST)) { 1386 int rev = st ? st->revision : 0; 1387 1388 pr_err("UV: BIOS UVsystab mismatch, (%x < %x)\n", 1389 rev, UV_SYSTAB_VERSION_UV4_LATEST); 1390 pr_err("UV: Does not support UV, switch to non-UV x86_64\n"); 1391 uv_system_type = UV_NONE; 1392 1393 return -EINVAL; 1394 } 1395 1396 for (i = 0; st->entry[i].type != UV_SYSTAB_TYPE_UNUSED; i++) { 1397 unsigned long ptr = st->entry[i].offset; 1398 1399 if (!ptr) 1400 continue; 1401 1402 /* point to payload */ 1403 ptr += (unsigned long)st; 1404 1405 switch (st->entry[i].type) { 1406 case UV_SYSTAB_TYPE_GAM_PARAMS: 1407 decode_gam_params(ptr); 1408 break; 1409 1410 case UV_SYSTAB_TYPE_GAM_RNG_TBL: 1411 decode_gam_rng_tbl(ptr); 1412 break; 1413 1414 case UV_SYSTAB_TYPE_ARCH_TYPE: 1415 /* already processed in early startup */ 1416 break; 1417 1418 default: 1419 pr_err("UV:%s:Unrecognized UV_SYSTAB_TYPE:%d, skipped\n", 1420 __func__, st->entry[i].type); 1421 break; 1422 } 1423 } 1424 return 0; 1425 } 1426 1427 /* 1428 * Given a bitmask 'bits' representing presnt blades, numbered 1429 * starting at 'base', masking off unused high bits of blade number 1430 * with 'mask', update the minimum and maximum blade numbers that we 1431 * have found. (Masking with 'mask' necessary because of BIOS 1432 * treatment of system partitioning when creating this table we are 1433 * interpreting.) 1434 */ blade_update_min_max(unsigned long bits,int base,int mask,int * min,int * max)1435 static inline void blade_update_min_max(unsigned long bits, int base, int mask, int *min, int *max) 1436 { 1437 int first, last; 1438 1439 if (!bits) 1440 return; 1441 first = (base + __ffs(bits)) & mask; 1442 last = (base + __fls(bits)) & mask; 1443 1444 if (*min > first) 1445 *min = first; 1446 if (*max < last) 1447 *max = last; 1448 } 1449 1450 /* Set up physical blade translations from UVH_NODE_PRESENT_TABLE */ boot_init_possible_blades(struct uv_hub_info_s * hub_info)1451 static __init void boot_init_possible_blades(struct uv_hub_info_s *hub_info) 1452 { 1453 unsigned long np; 1454 int i, uv_pb = 0; 1455 int sock_min = INT_MAX, sock_max = -1, s_mask; 1456 1457 s_mask = (1 << uv_cpuid.n_skt) - 1; 1458 1459 if (UVH_NODE_PRESENT_TABLE) { 1460 pr_info("UV: NODE_PRESENT_DEPTH = %d\n", 1461 UVH_NODE_PRESENT_TABLE_DEPTH); 1462 for (i = 0; i < UVH_NODE_PRESENT_TABLE_DEPTH; i++) { 1463 np = uv_read_local_mmr(UVH_NODE_PRESENT_TABLE + i * 8); 1464 pr_info("UV: NODE_PRESENT(%d) = 0x%016lx\n", i, np); 1465 blade_update_min_max(np, i * 64, s_mask, &sock_min, &sock_max); 1466 } 1467 } 1468 if (UVH_NODE_PRESENT_0) { 1469 np = uv_read_local_mmr(UVH_NODE_PRESENT_0); 1470 pr_info("UV: NODE_PRESENT_0 = 0x%016lx\n", np); 1471 blade_update_min_max(np, 0, s_mask, &sock_min, &sock_max); 1472 } 1473 if (UVH_NODE_PRESENT_1) { 1474 np = uv_read_local_mmr(UVH_NODE_PRESENT_1); 1475 pr_info("UV: NODE_PRESENT_1 = 0x%016lx\n", np); 1476 blade_update_min_max(np, 64, s_mask, &sock_min, &sock_max); 1477 } 1478 1479 /* Only update if we actually found some bits indicating blades present */ 1480 if (sock_max >= sock_min) { 1481 _min_socket = sock_min; 1482 _max_socket = sock_max; 1483 uv_pb = sock_max - sock_min + 1; 1484 } 1485 if (uv_possible_blades != uv_pb) 1486 uv_possible_blades = uv_pb; 1487 1488 pr_info("UV: number nodes/possible blades %d (%d - %d)\n", 1489 uv_pb, sock_min, sock_max); 1490 } 1491 alloc_conv_table(int num_elem,unsigned short ** table)1492 static int __init alloc_conv_table(int num_elem, unsigned short **table) 1493 { 1494 int i; 1495 size_t bytes; 1496 1497 bytes = num_elem * sizeof(*table[0]); 1498 *table = kmalloc(bytes, GFP_KERNEL); 1499 if (WARN_ON_ONCE(!*table)) 1500 return -ENOMEM; 1501 for (i = 0; i < num_elem; i++) 1502 ((unsigned short *)*table)[i] = SOCK_EMPTY; 1503 return 0; 1504 } 1505 1506 /* Remove conversion table if it's 1:1 */ 1507 #define FREE_1_TO_1_TABLE(tbl, min, max, max2) free_1_to_1_table(&tbl, #tbl, min, max, max2) 1508 free_1_to_1_table(unsigned short ** tp,char * tname,int min,int max,int max2)1509 static void __init free_1_to_1_table(unsigned short **tp, char *tname, int min, int max, int max2) 1510 { 1511 int i; 1512 unsigned short *table = *tp; 1513 1514 if (table == NULL) 1515 return; 1516 if (max != max2) 1517 return; 1518 for (i = 0; i < max; i++) { 1519 if (i != table[i]) 1520 return; 1521 } 1522 kfree(table); 1523 *tp = NULL; 1524 pr_info("UV: %s is 1:1, conversion table removed\n", tname); 1525 } 1526 1527 /* 1528 * Build Socket Tables 1529 * If the number of nodes is >1 per socket, socket to node table will 1530 * contain lowest node number on that socket. 1531 */ build_socket_tables(void)1532 static void __init build_socket_tables(void) 1533 { 1534 struct uv_gam_range_entry *gre = uv_gre_table; 1535 int nums, numn, nump; 1536 int i, lnid, apicid; 1537 int minsock = _min_socket; 1538 int maxsock = _max_socket; 1539 int minpnode = _min_pnode; 1540 int maxpnode = _max_pnode; 1541 1542 if (!gre) { 1543 if (is_uv2_hub() || is_uv3_hub()) { 1544 pr_info("UV: No UVsystab socket table, ignoring\n"); 1545 return; 1546 } 1547 pr_err("UV: Error: UVsystab address translations not available!\n"); 1548 WARN_ON_ONCE(!gre); 1549 return; 1550 } 1551 1552 numn = num_possible_nodes(); 1553 nump = maxpnode - minpnode + 1; 1554 nums = maxsock - minsock + 1; 1555 1556 /* Allocate and clear tables */ 1557 if ((alloc_conv_table(nump, &_pnode_to_socket) < 0) 1558 || (alloc_conv_table(nums, &_socket_to_pnode) < 0) 1559 || (alloc_conv_table(numn, &_node_to_socket) < 0) 1560 || (alloc_conv_table(nums, &_socket_to_node) < 0)) { 1561 kfree(_pnode_to_socket); 1562 kfree(_socket_to_pnode); 1563 kfree(_node_to_socket); 1564 return; 1565 } 1566 1567 /* Fill in pnode/node/addr conversion list values: */ 1568 for (; gre->type != UV_GAM_RANGE_TYPE_UNUSED; gre++) { 1569 if (gre->type == UV_GAM_RANGE_TYPE_HOLE) 1570 continue; 1571 i = gre->sockid - minsock; 1572 if (_socket_to_pnode[i] == SOCK_EMPTY) 1573 _socket_to_pnode[i] = gre->pnode; 1574 1575 i = gre->pnode - minpnode; 1576 if (_pnode_to_socket[i] == SOCK_EMPTY) 1577 _pnode_to_socket[i] = gre->sockid; 1578 1579 pr_info("UV: sid:%02x type:%d nasid:%04x pn:%02x pn2s:%2x\n", 1580 gre->sockid, gre->type, gre->nasid, 1581 _socket_to_pnode[gre->sockid - minsock], 1582 _pnode_to_socket[gre->pnode - minpnode]); 1583 } 1584 1585 /* Set socket -> node values: */ 1586 lnid = NUMA_NO_NODE; 1587 for (apicid = 0; apicid < ARRAY_SIZE(__apicid_to_node); apicid++) { 1588 int nid = __apicid_to_node[apicid]; 1589 int sockid; 1590 1591 if ((nid == NUMA_NO_NODE) || (lnid == nid)) 1592 continue; 1593 lnid = nid; 1594 1595 sockid = apicid >> uv_cpuid.socketid_shift; 1596 1597 if (_socket_to_node[sockid - minsock] == SOCK_EMPTY) 1598 _socket_to_node[sockid - minsock] = nid; 1599 1600 if (_node_to_socket[nid] == SOCK_EMPTY) 1601 _node_to_socket[nid] = sockid; 1602 1603 pr_info("UV: sid:%02x: apicid:%04x socket:%02d node:%03x s2n:%03x\n", 1604 sockid, 1605 apicid, 1606 _node_to_socket[nid], 1607 nid, 1608 _socket_to_node[sockid - minsock]); 1609 } 1610 1611 /* 1612 * If e.g. socket id == pnode for all pnodes, 1613 * system runs faster by removing corresponding conversion table. 1614 */ 1615 FREE_1_TO_1_TABLE(_socket_to_node, _min_socket, nums, numn); 1616 FREE_1_TO_1_TABLE(_node_to_socket, _min_socket, nums, numn); 1617 FREE_1_TO_1_TABLE(_socket_to_pnode, _min_pnode, nums, nump); 1618 FREE_1_TO_1_TABLE(_pnode_to_socket, _min_pnode, nums, nump); 1619 } 1620 1621 /* Check which reboot to use */ check_efi_reboot(void)1622 static void check_efi_reboot(void) 1623 { 1624 /* If EFI reboot not available, use ACPI reboot */ 1625 if (!efi_enabled(EFI_BOOT)) 1626 reboot_type = BOOT_ACPI; 1627 } 1628 1629 /* 1630 * User proc fs file handling now deprecated. 1631 * Recommend using /sys/firmware/sgi_uv/... instead. 1632 */ proc_hubbed_show(struct seq_file * file,void * data)1633 static int __maybe_unused proc_hubbed_show(struct seq_file *file, void *data) 1634 { 1635 pr_notice_once("%s: using deprecated /proc/sgi_uv/hubbed, use /sys/firmware/sgi_uv/hub_type\n", 1636 current->comm); 1637 seq_printf(file, "0x%x\n", uv_hubbed_system); 1638 return 0; 1639 } 1640 proc_hubless_show(struct seq_file * file,void * data)1641 static int __maybe_unused proc_hubless_show(struct seq_file *file, void *data) 1642 { 1643 pr_notice_once("%s: using deprecated /proc/sgi_uv/hubless, use /sys/firmware/sgi_uv/hubless\n", 1644 current->comm); 1645 seq_printf(file, "0x%x\n", uv_hubless_system); 1646 return 0; 1647 } 1648 proc_archtype_show(struct seq_file * file,void * data)1649 static int __maybe_unused proc_archtype_show(struct seq_file *file, void *data) 1650 { 1651 pr_notice_once("%s: using deprecated /proc/sgi_uv/archtype, use /sys/firmware/sgi_uv/archtype\n", 1652 current->comm); 1653 seq_printf(file, "%s/%s\n", uv_archtype, oem_table_id); 1654 return 0; 1655 } 1656 uv_setup_proc_files(int hubless)1657 static __init void uv_setup_proc_files(int hubless) 1658 { 1659 struct proc_dir_entry *pde; 1660 1661 pde = proc_mkdir(UV_PROC_NODE, NULL); 1662 proc_create_single("archtype", 0, pde, proc_archtype_show); 1663 if (hubless) 1664 proc_create_single("hubless", 0, pde, proc_hubless_show); 1665 else 1666 proc_create_single("hubbed", 0, pde, proc_hubbed_show); 1667 } 1668 1669 /* Initialize UV hubless systems */ uv_system_init_hubless(void)1670 static __init int uv_system_init_hubless(void) 1671 { 1672 int rc; 1673 1674 /* Setup PCH NMI handler */ 1675 uv_nmi_setup_hubless(); 1676 1677 /* Init kernel/BIOS interface */ 1678 rc = uv_bios_init(); 1679 if (rc < 0) 1680 return rc; 1681 1682 /* Process UVsystab */ 1683 rc = decode_uv_systab(); 1684 if (rc < 0) 1685 return rc; 1686 1687 /* Set section block size for current node memory */ 1688 set_block_size(); 1689 1690 /* Create user access node */ 1691 if (rc >= 0) 1692 uv_setup_proc_files(1); 1693 1694 check_efi_reboot(); 1695 1696 return rc; 1697 } 1698 uv_system_init_hub(void)1699 static void __init uv_system_init_hub(void) 1700 { 1701 struct uv_hub_info_s hub_info = {0}; 1702 int bytes, cpu, nodeid, bid; 1703 unsigned short min_pnode = USHRT_MAX, max_pnode = 0; 1704 char *hub = is_uv5_hub() ? "UV500" : 1705 is_uv4_hub() ? "UV400" : 1706 is_uv3_hub() ? "UV300" : 1707 is_uv2_hub() ? "UV2000/3000" : NULL; 1708 struct uv_hub_info_s **uv_hub_info_list_blade; 1709 1710 if (!hub) { 1711 pr_err("UV: Unknown/unsupported UV hub\n"); 1712 return; 1713 } 1714 pr_info("UV: Found %s hub\n", hub); 1715 1716 map_low_mmrs(); 1717 1718 /* Get uv_systab for decoding, setup UV BIOS calls */ 1719 uv_bios_init(); 1720 1721 /* If there's an UVsystab problem then abort UV init: */ 1722 if (decode_uv_systab() < 0) { 1723 pr_err("UV: Mangled UVsystab format\n"); 1724 return; 1725 } 1726 1727 build_socket_tables(); 1728 build_uv_gr_table(); 1729 set_block_size(); 1730 uv_init_hub_info(&hub_info); 1731 /* If UV2 or UV3 may need to get # blades from HW */ 1732 if (is_uv(UV2|UV3) && !uv_gre_table) 1733 boot_init_possible_blades(&hub_info); 1734 else 1735 /* min/max sockets set in decode_gam_rng_tbl */ 1736 uv_possible_blades = (_max_socket - _min_socket) + 1; 1737 1738 /* uv_num_possible_blades() is really the hub count: */ 1739 pr_info("UV: Found %d hubs, %d nodes, %d CPUs\n", uv_num_possible_blades(), num_possible_nodes(), num_possible_cpus()); 1740 1741 uv_bios_get_sn_info(0, &uv_type, &sn_partition_id, &sn_coherency_id, &sn_region_size, &system_serial_number); 1742 hub_info.coherency_domain_number = sn_coherency_id; 1743 uv_rtc_init(); 1744 1745 /* 1746 * __uv_hub_info_list[] is indexed by node, but there is only 1747 * one hub_info structure per blade. First, allocate one 1748 * structure per blade. Further down we create a per-node 1749 * table (__uv_hub_info_list[]) pointing to hub_info 1750 * structures for the correct blade. 1751 */ 1752 1753 bytes = sizeof(void *) * uv_num_possible_blades(); 1754 uv_hub_info_list_blade = kzalloc(bytes, GFP_KERNEL); 1755 if (WARN_ON_ONCE(!uv_hub_info_list_blade)) 1756 return; 1757 1758 bytes = sizeof(struct uv_hub_info_s); 1759 for_each_possible_blade(bid) { 1760 struct uv_hub_info_s *new_hub; 1761 1762 /* Allocate & fill new per hub info list */ 1763 new_hub = (bid == 0) ? &uv_hub_info_node0 1764 : kzalloc_node(bytes, GFP_KERNEL, uv_blade_to_node(bid)); 1765 if (WARN_ON_ONCE(!new_hub)) { 1766 /* do not kfree() bid 0, which is statically allocated */ 1767 while (--bid > 0) 1768 kfree(uv_hub_info_list_blade[bid]); 1769 kfree(uv_hub_info_list_blade); 1770 return; 1771 } 1772 1773 uv_hub_info_list_blade[bid] = new_hub; 1774 *new_hub = hub_info; 1775 1776 /* Use information from GAM table if available: */ 1777 if (uv_gre_table) 1778 new_hub->pnode = uv_blade_to_pnode(bid); 1779 else /* Or fill in during CPU loop: */ 1780 new_hub->pnode = 0xffff; 1781 1782 new_hub->numa_blade_id = bid; 1783 new_hub->memory_nid = NUMA_NO_NODE; 1784 new_hub->nr_possible_cpus = 0; 1785 new_hub->nr_online_cpus = 0; 1786 } 1787 1788 /* 1789 * Now populate __uv_hub_info_list[] for each node with the 1790 * pointer to the struct for the blade it resides on. 1791 */ 1792 1793 bytes = sizeof(void *) * num_possible_nodes(); 1794 __uv_hub_info_list = kzalloc(bytes, GFP_KERNEL); 1795 if (WARN_ON_ONCE(!__uv_hub_info_list)) { 1796 for_each_possible_blade(bid) 1797 /* bid 0 is statically allocated */ 1798 if (bid != 0) 1799 kfree(uv_hub_info_list_blade[bid]); 1800 kfree(uv_hub_info_list_blade); 1801 return; 1802 } 1803 1804 for_each_node(nodeid) 1805 __uv_hub_info_list[nodeid] = uv_hub_info_list_blade[uv_node_to_blade_id(nodeid)]; 1806 1807 /* Initialize per CPU info: */ 1808 for_each_possible_cpu(cpu) { 1809 int apicid = per_cpu(x86_cpu_to_apicid, cpu); 1810 unsigned short bid; 1811 unsigned short pnode; 1812 1813 pnode = uv_apicid_to_pnode(apicid); 1814 bid = uv_pnode_to_socket(pnode) - _min_socket; 1815 1816 uv_cpu_info_per(cpu)->p_uv_hub_info = uv_hub_info_list_blade[bid]; 1817 uv_cpu_info_per(cpu)->blade_cpu_id = uv_cpu_hub_info(cpu)->nr_possible_cpus++; 1818 if (uv_cpu_hub_info(cpu)->memory_nid == NUMA_NO_NODE) 1819 uv_cpu_hub_info(cpu)->memory_nid = cpu_to_node(cpu); 1820 1821 if (uv_cpu_hub_info(cpu)->pnode == 0xffff) 1822 uv_cpu_hub_info(cpu)->pnode = pnode; 1823 } 1824 1825 for_each_possible_blade(bid) { 1826 unsigned short pnode = uv_hub_info_list_blade[bid]->pnode; 1827 1828 if (pnode == 0xffff) 1829 continue; 1830 1831 min_pnode = min(pnode, min_pnode); 1832 max_pnode = max(pnode, max_pnode); 1833 pr_info("UV: HUB:%2d pn:%02x nrcpus:%d\n", 1834 bid, 1835 uv_hub_info_list_blade[bid]->pnode, 1836 uv_hub_info_list_blade[bid]->nr_possible_cpus); 1837 } 1838 1839 pr_info("UV: min_pnode:%02x max_pnode:%02x\n", min_pnode, max_pnode); 1840 map_gru_high(max_pnode); 1841 map_mmr_high(max_pnode); 1842 map_mmioh_high(min_pnode, max_pnode); 1843 1844 kfree(uv_hub_info_list_blade); 1845 uv_hub_info_list_blade = NULL; 1846 1847 uv_nmi_setup(); 1848 uv_cpu_init(); 1849 uv_setup_proc_files(0); 1850 1851 /* Register Legacy VGA I/O redirection handler: */ 1852 pci_register_set_vga_state(uv_set_vga_state); 1853 1854 check_efi_reboot(); 1855 } 1856 1857 /* 1858 * There is a different code path needed to initialize a UV system that does 1859 * not have a "UV HUB" (referred to as "hubless"). 1860 */ uv_system_init(void)1861 void __init uv_system_init(void) 1862 { 1863 if (likely(!is_uv_system() && !is_uv_hubless(1))) 1864 return; 1865 1866 if (is_uv_system()) 1867 uv_system_init_hub(); 1868 else 1869 uv_system_init_hubless(); 1870 } 1871 1872 apic_driver(apic_x2apic_uv_x); 1873