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
  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
 144 done:
 145         sdt_sdth_unmap(&srat->Header);
 146 }
 147
 148 SYSINIT(srat_probe, SI_BOOT2_NUMA, SI_ORDER_FIRST, srat_probe, 0);