93 lines
2.1 KiB
C
93 lines
2.1 KiB
C
/*
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* APIC driver for the Unisys ES7000 chipset.
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*/
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#define APIC_DEFINITION 1
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#include <linux/threads.h>
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#include <linux/cpumask.h>
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#include <asm/mpspec.h>
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#include <asm/genapic.h>
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#include <asm/fixmap.h>
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#include <asm/apicdef.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/init.h>
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#include <asm/es7000/apicdef.h>
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#include <linux/smp.h>
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#include <asm/es7000/apic.h>
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#include <asm/es7000/ipi.h>
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#include <asm/es7000/mpparse.h>
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#include <asm/es7000/wakecpu.h>
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static int probe_es7000(void)
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{
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/* probed later in mptable/ACPI hooks */
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return 0;
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}
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extern void es7000_sw_apic(void);
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static void __init enable_apic_mode(void)
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{
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es7000_sw_apic();
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return;
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}
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static __init int mps_oem_check(struct mp_config_table *mpc, char *oem,
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char *productid)
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{
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if (mpc->mpc_oemptr) {
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struct mp_config_oemtable *oem_table =
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(struct mp_config_oemtable *)mpc->mpc_oemptr;
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if (!strncmp(oem, "UNISYS", 6))
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return parse_unisys_oem((char *)oem_table);
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}
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return 0;
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}
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#ifdef CONFIG_ACPI
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/* Hook from generic ACPI tables.c */
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static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
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{
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unsigned long oem_addr = 0;
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int check_dsdt;
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int ret = 0;
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/* check dsdt at first to avoid clear fix_map for oem_addr */
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check_dsdt = es7000_check_dsdt();
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if (!find_unisys_acpi_oem_table(&oem_addr)) {
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if (check_dsdt)
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ret = parse_unisys_oem((char *)oem_addr);
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else {
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setup_unisys();
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ret = 1;
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}
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/*
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* we need to unmap it
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*/
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unmap_unisys_acpi_oem_table(oem_addr);
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}
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return ret;
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}
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#else
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static int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
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{
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return 0;
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}
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#endif
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static cpumask_t vector_allocation_domain(int cpu)
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{
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/* Careful. Some cpus do not strictly honor the set of cpus
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* specified in the interrupt destination when using lowest
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* priority interrupt delivery mode.
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*
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* In particular there was a hyperthreading cpu observed to
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* deliver interrupts to the wrong hyperthread when only one
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* hyperthread was specified in the interrupt desitination.
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*/
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cpumask_t domain = { { [0] = APIC_ALL_CPUS, } };
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return domain;
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}
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struct genapic __initdata_refok apic_es7000 = APIC_INIT("es7000", probe_es7000);
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