linux/arch/x86/mach-generic/es7000.c
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   1/*
   2 * APIC driver for the Unisys ES7000 chipset.
   3 */
   4#define APIC_DEFINITION 1
   5#include <linux/threads.h>
   6#include <linux/cpumask.h>
   7#include <asm/mpspec.h>
   8#include <asm/genapic.h>
   9#include <asm/fixmap.h>
  10#include <asm/apicdef.h>
  11#include <linux/kernel.h>
  12#include <linux/string.h>
  13#include <linux/init.h>
  14#include <asm/es7000/apicdef.h>
  15#include <linux/smp.h>
  16#include <asm/es7000/apic.h>
  17#include <asm/es7000/ipi.h>
  18#include <asm/es7000/mpparse.h>
  19#include <asm/es7000/wakecpu.h>
  20
  21static int probe_es7000(void)
  22{
  23        /* probed later in mptable/ACPI hooks */
  24        return 0;
  25}
  26
  27extern void es7000_sw_apic(void);
  28static void __init enable_apic_mode(void)
  29{
  30        es7000_sw_apic();
  31        return;
  32}
  33
  34static __init int mps_oem_check(struct mp_config_table *mpc, char *oem,
  35                char *productid)
  36{
  37        if (mpc->mpc_oemptr) {
  38                struct mp_config_oemtable *oem_table =
  39                        (struct mp_config_oemtable *)mpc->mpc_oemptr;
  40                if (!strncmp(oem, "UNISYS", 6))
  41                        return parse_unisys_oem((char *)oem_table);
  42        }
  43        return 0;
  44}
  45
  46#ifdef CONFIG_ACPI
  47/* Hook from generic ACPI tables.c */
  48static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
  49{
  50        unsigned long oem_addr = 0;
  51        int check_dsdt;
  52        int ret = 0;
  53
  54        /* check dsdt at first to avoid clear fix_map for oem_addr */
  55        check_dsdt = es7000_check_dsdt();
  56
  57        if (!find_unisys_acpi_oem_table(&oem_addr)) {
  58                if (check_dsdt)
  59                        ret = parse_unisys_oem((char *)oem_addr);
  60                else {
  61                        setup_unisys();
  62                        ret = 1;
  63                }
  64                /*
  65                 * we need to unmap it
  66                 */
  67                unmap_unisys_acpi_oem_table(oem_addr);
  68        }
  69        return ret;
  70}
  71#else
  72static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
  73{
  74        return 0;
  75}
  76#endif
  77
  78static cpumask_t vector_allocation_domain(int cpu)
  79{
  80        /* Careful. Some cpus do not strictly honor the set of cpus
  81         * specified in the interrupt destination when using lowest
  82         * priority interrupt delivery mode.
  83         *
  84         * In particular there was a hyperthreading cpu observed to
  85         * deliver interrupts to the wrong hyperthread when only one
  86         * hyperthread was specified in the interrupt desitination.
  87         */
  88        cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
  89        return domain;
  90}
  91
  92struct genapic __initdata_refok apic_es7000 = APIC_INIT("es7000", probe_es7000);
  93