1 /* 2 * Copyright (c) 2009 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Sepherosa Ziehau <sepherosa@gmail.com> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/bus.h> 37 #include <sys/kernel.h> 38 #include <sys/systm.h> 39 #include <vm/vm_page.h> 40 41 #include "acpi.h" 42 #include "acpi_sdt_var.h" 43 44 typedef union srat_entry { 45 ACPI_SUBTABLE_HEADER head; 46 ACPI_SRAT_CPU_AFFINITY cpu; 47 ACPI_SRAT_MEM_AFFINITY mem; 48 ACPI_SRAT_X2APIC_CPU_AFFINITY x2apic; 49 ACPI_SRAT_GICC_AFFINITY gicc; 50 } srat_entry_t; 51 52 static void 53 srat_probe(void) 54 { 55 vm_paddr_t srat_paddr; 56 ACPI_TABLE_SRAT *srat; 57 srat_entry_t *mem; 58 srat_entry_t *cpu; 59 int error = 0; 60 int enabled = 1; 61 int disabled = 0; 62 63 /* 64 * Allow NUMA to be disabled by either setting kern.numa_disable 65 * to 1 or by setting hw.acpi.srat.enabled to 0. 66 */ 67 kgetenv_int("kern.numa_disable", &disabled); 68 kgetenv_int("hw.acpi.srat.enabled", &enabled); 69 if (disabled || enabled == 0) 70 return; 71 72 /* 73 * Map the SRAT if it exists 74 */ 75 srat_paddr = sdt_search(ACPI_SIG_SRAT); 76 if (srat_paddr == 0) { 77 kprintf("srat_probe: can't locate SRAT\n"); 78 return; 79 } 80 81 srat = sdt_sdth_map(srat_paddr); 82 KKASSERT(srat != NULL); 83 84 if (srat->Header.Length < sizeof(*srat)) { 85 kprintf("acpi: invalid SRAT length %u\n", 86 srat->Header.Length); 87 error = EINVAL; 88 goto done; 89 } 90 91 cpu = NULL; 92 93 for (mem = (srat_entry_t *)(srat + 1); 94 (char *)mem < (char *)srat + srat->Header.Length; 95 mem = (srat_entry_t *)((char *)mem + mem->head.Length)) { 96 /* 97 * Mem scan memory affinity only 98 */ 99 if (mem->head.Type != ACPI_SRAT_TYPE_MEMORY_AFFINITY) 100 continue; 101 if ((mem->mem.Flags & ACPI_SRAT_MEM_ENABLED) == 0) 102 continue; 103 104 kprintf("MemAffinity %016jx,%ldMB Prox=%u ", 105 mem->mem.BaseAddress, 106 mem->mem.Length / (1024 * 1024), 107 mem->mem.ProximityDomain); 108 109 /* 110 * Look for associated cpu affinity 111 */ 112 if (cpu == NULL || 113 mem->mem.ProximityDomain != cpu->cpu.ProximityDomainLo) { 114 for (cpu = (srat_entry_t *)(srat + 1); 115 (char *)cpu < (char *)srat + srat->Header.Length; 116 cpu = (srat_entry_t *)((char *)cpu + 117 cpu->head.Length)) { 118 if (cpu->head.Type != 119 ACPI_SRAT_TYPE_CPU_AFFINITY) 120 continue; 121 if ((cpu->cpu.Flags & 122 ACPI_SRAT_CPU_USE_AFFINITY) == 0) 123 continue; 124 if (mem->mem.ProximityDomain == 125 cpu->cpu.ProximityDomainLo) { 126 break; 127 } 128 } 129 if ((char *)cpu >= (char *)srat + srat->Header.Length) 130 cpu = NULL; 131 } 132 if (cpu) { 133 kprintf("CpuApicId %02x Socket %d\n", 134 cpu->cpu.ApicId, 135 get_chip_ID_from_APICID(cpu->cpu.ApicId)); 136 vm_numa_organize(mem->mem.BaseAddress, 137 mem->mem.Length, 138 get_chip_ID_from_APICID(cpu->cpu.ApicId)); 139 } else { 140 kprintf("(not found)\n"); 141 } 142 } 143 vm_numa_organize_finalize(); 144 145 done: 146 sdt_sdth_unmap(&srat->Header); 147 } 148 149 SYSINIT(srat_probe, SI_BOOT2_NUMA, SI_ORDER_FIRST, srat_probe, 0); 150