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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin st fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 111 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000436.567572064@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* sfi.c - x86 architecture SFI support.
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*
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* Copyright (c) 2009, Intel Corporation.
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*/
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#define KMSG_COMPONENT "SFI"
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
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#include <linux/acpi.h>
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#include <linux/init.h>
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#include <linux/sfi.h>
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#include <linux/io.h>
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#include <asm/irqdomain.h>
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#include <asm/io_apic.h>
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#include <asm/mpspec.h>
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#include <asm/setup.h>
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#include <asm/apic.h>
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#ifdef CONFIG_X86_LOCAL_APIC
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static unsigned long sfi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
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/* All CPUs enumerated by SFI must be present and enabled */
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static void __init mp_sfi_register_lapic(u8 id)
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{
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if (MAX_LOCAL_APIC - id <= 0) {
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pr_warning("Processor #%d invalid (max %d)\n",
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id, MAX_LOCAL_APIC);
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return;
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}
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pr_info("registering lapic[%d]\n", id);
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generic_processor_info(id, GET_APIC_VERSION(apic_read(APIC_LVR)));
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}
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static int __init sfi_parse_cpus(struct sfi_table_header *table)
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{
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struct sfi_table_simple *sb;
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struct sfi_cpu_table_entry *pentry;
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int i;
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int cpu_num;
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sb = (struct sfi_table_simple *)table;
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cpu_num = SFI_GET_NUM_ENTRIES(sb, struct sfi_cpu_table_entry);
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pentry = (struct sfi_cpu_table_entry *)sb->pentry;
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for (i = 0; i < cpu_num; i++) {
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mp_sfi_register_lapic(pentry->apic_id);
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pentry++;
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}
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smp_found_config = 1;
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return 0;
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}
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#endif /* CONFIG_X86_LOCAL_APIC */
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#ifdef CONFIG_X86_IO_APIC
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static int __init sfi_parse_ioapic(struct sfi_table_header *table)
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{
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struct sfi_table_simple *sb;
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struct sfi_apic_table_entry *pentry;
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int i, num;
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struct ioapic_domain_cfg cfg = {
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.type = IOAPIC_DOMAIN_STRICT,
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.ops = &mp_ioapic_irqdomain_ops,
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};
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sb = (struct sfi_table_simple *)table;
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num = SFI_GET_NUM_ENTRIES(sb, struct sfi_apic_table_entry);
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pentry = (struct sfi_apic_table_entry *)sb->pentry;
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for (i = 0; i < num; i++) {
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mp_register_ioapic(i, pentry->phys_addr, gsi_top, &cfg);
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pentry++;
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}
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WARN(pic_mode, KERN_WARNING
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"SFI: pic_mod shouldn't be 1 when IOAPIC table is present\n");
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pic_mode = 0;
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return 0;
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}
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#endif /* CONFIG_X86_IO_APIC */
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/*
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* sfi_platform_init(): register lapics & io-apics
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*/
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int __init sfi_platform_init(void)
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{
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#ifdef CONFIG_X86_LOCAL_APIC
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register_lapic_address(sfi_lapic_addr);
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sfi_table_parse(SFI_SIG_CPUS, NULL, NULL, sfi_parse_cpus);
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#endif
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#ifdef CONFIG_X86_IO_APIC
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sfi_table_parse(SFI_SIG_APIC, NULL, NULL, sfi_parse_ioapic);
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#endif
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return 0;
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}
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