sys/platform/pc64/acpica/acpi_srat.c

   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 #include "acpi_sci_var.h"
  44
  45 extern int naps;
  46
  47 #define MADT_VPRINTF(fmt, arg...) \
  48 do { \
  49         if (bootverbose) \
  50                 kprintf("ACPI MADT: " fmt , ##arg); \
  51 } while (0)
  52
  53 #define MADT_INT_BUS_ISA        0
  54
  55 typedef union srat_entry {
  56         ACPI_SUBTABLE_HEADER    head;
  57         ACPI_SRAT_CPU_AFFINITY  cpu;
  58         ACPI_SRAT_MEM_AFFINITY  mem;
  59         ACPI_SRAT_X2APIC_CPU_AFFINITY   x2apic;
  60         ACPI_SRAT_GICC_AFFINITY gicc;
  61 } srat_entry_t;
  62
  63 static void
  64 srat_probe(void)
  65 {
  66         vm_paddr_t srat_paddr;
  67         ACPI_TABLE_SRAT *srat;
  68         srat_entry_t *mem;
  69         srat_entry_t *cpu;
  70         int error = 0;
  71         int enabled = 1;
  72         int disabled = 0;
  73
  74         /*
  75          * Allow NUMA to be disabled by either setting kern.numa_disable
  76          * to 1 or by setting hw.acpi.srat.enabled to 0.
  77          */
  78         kgetenv_int("kern.numa_disable", &disabled);
  79         kgetenv_int("hw.acpi.srat.enabled", &enabled);
  80         if (disabled || enabled == 0)
  81                 return;
  82
  83         /*
  84          * Map the SRAT if it exists
  85          */
  86         srat_paddr = sdt_search(ACPI_SIG_SRAT);
  87         if (srat_paddr == 0) {
  88                 kprintf("srat_probe: can't locate SRAT\n");
  89                 return;
  90         }
  91
  92         srat = sdt_sdth_map(srat_paddr);
  93         KKASSERT(srat != NULL);
  94
  95         if (srat->Header.Length < sizeof(*srat)) {
  96                 kprintf("acpi: invalid SRAT length %u\n",
  97                         srat->Header.Length);
  98                 error = EINVAL;
  99                 goto done;
 100         }
 101
 102         cpu = NULL;
 103
 104         for (mem = (srat_entry_t *)(srat + 1);
 105              (char *)mem < (char *)srat + srat->Header.Length;
 106              mem = (srat_entry_t *)((char *)mem + mem->head.Length)) {
 107                 /*
 108                  * Mem scan memory affinity only
 109                  */
 110                 if (mem->head.Type != ACPI_SRAT_TYPE_MEMORY_AFFINITY)
 111                         continue;
 112                 if ((mem->mem.Flags & ACPI_SRAT_MEM_ENABLED) == 0)
 113                         continue;
 114
 115                 kprintf("MemAffinity %016jx,%ldMB Prox=%u ",
 116                         mem->mem.BaseAddress,
 117                         mem->mem.Length / (1024 * 1024),
 118                         mem->mem.ProximityDomain);
 119
 120                 /*
 121                  * Look for associated cpu affinity
 122                  */
 123                 if (cpu == NULL ||
 124                     mem->mem.ProximityDomain != cpu->cpu.ProximityDomainLo) {
 125                         for (cpu = (srat_entry_t *)(srat + 1);
 126                              (char *)cpu < (char *)srat + srat->Header.Length;
 127                              cpu = (srat_entry_t *)((char *)cpu +
 128                                                     cpu->head.Length)) {
 129                                 if (cpu->head.Type !=
 130                                     ACPI_SRAT_TYPE_CPU_AFFINITY)
 131                                         continue;
 132                                 if ((cpu->cpu.Flags &
 133                                      ACPI_SRAT_CPU_USE_AFFINITY) == 0)
 134                                         continue;
 135                                 if (mem->mem.ProximityDomain ==
 136                                     cpu->cpu.ProximityDomainLo) {
 137                                         break;
 138                                 }
 139                         }
 140                         if ((char *)cpu >= (char *)srat + srat->Header.Length)
 141                                 cpu = NULL;
 142                 }
 143                 if (cpu) {
 144                         kprintf("CpuApicId %02x Socket %d\n",
 145                                 cpu->cpu.ApicId,
 146                                 get_chip_ID_from_APICID(cpu->cpu.ApicId));
 147                         vm_numa_organize(mem->mem.BaseAddress,
 148                                          mem->mem.Length,
 149                                     get_chip_ID_from_APICID(cpu->cpu.ApicId));
 150                 } else {
 151                         kprintf("(not found)\n");
 152                 }
 153         }
 154
 155 done:
 156         sdt_sdth_unmap(&srat->Header);
 157 }
 158
 159 SYSINIT(srat_probe, SI_BOOT2_NUMA, SI_ORDER_FIRST, srat_probe, 0);