2009-08-19 19:48:38 +07:00
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/*
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* Copyright (C) 2009 Thomas Gleixner <tglx@linutronix.de>
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*
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* For licencing details see kernel-base/COPYING
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*/
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#include <linux/init.h>
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2009-08-29 22:51:26 +07:00
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#include <linux/ioport.h>
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2016-07-14 07:18:56 +07:00
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#include <linux/export.h>
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2010-10-07 03:12:28 +07:00
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#include <linux/pci.h>
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2009-08-19 19:48:38 +07:00
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2009-08-19 19:36:27 +07:00
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#include <asm/bios_ebda.h>
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2009-08-20 18:19:57 +07:00
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#include <asm/paravirt.h>
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2009-08-29 21:24:51 +07:00
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#include <asm/pci_x86.h>
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2009-08-20 15:41:58 +07:00
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#include <asm/mpspec.h>
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2009-08-19 19:55:50 +07:00
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#include <asm/setup.h>
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2009-08-19 17:35:53 +07:00
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#include <asm/apic.h>
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2017-01-27 16:27:10 +07:00
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#include <asm/e820/api.h>
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2009-08-19 20:37:03 +07:00
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#include <asm/time.h>
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2009-08-20 14:41:38 +07:00
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#include <asm/irq.h>
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2012-03-28 23:37:36 +07:00
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#include <asm/io_apic.h>
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2012-09-26 17:44:37 +07:00
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#include <asm/hpet.h>
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2009-11-20 03:23:41 +07:00
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#include <asm/pat.h>
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2009-08-20 22:06:25 +07:00
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#include <asm/tsc.h>
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2009-10-27 14:34:44 +07:00
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#include <asm/iommu.h>
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2011-11-10 20:43:05 +07:00
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#include <asm/mach_traps.h>
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2009-08-19 19:48:38 +07:00
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x86: delete __cpuinit usage from all x86 files
The __cpuinit type of throwaway sections might have made sense
some time ago when RAM was more constrained, but now the savings
do not offset the cost and complications. For example, the fix in
commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time")
is a good example of the nasty type of bugs that can be created
with improper use of the various __init prefixes.
After a discussion on LKML[1] it was decided that cpuinit should go
the way of devinit and be phased out. Once all the users are gone,
we can then finally remove the macros themselves from linux/init.h.
Note that some harmless section mismatch warnings may result, since
notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c)
are flagged as __cpuinit -- so if we remove the __cpuinit from
arch specific callers, we will also get section mismatch warnings.
As an intermediate step, we intend to turn the linux/init.h cpuinit
content into no-ops as early as possible, since that will get rid
of these warnings. In any case, they are temporary and harmless.
This removes all the arch/x86 uses of the __cpuinit macros from
all C files. x86 only had the one __CPUINIT used in assembly files,
and it wasn't paired off with a .previous or a __FINIT, so we can
delete it directly w/o any corresponding additional change there.
[1] https://lkml.org/lkml/2013/5/20/589
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-06-19 05:23:59 +07:00
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void x86_init_noop(void) { }
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2009-08-20 17:05:01 +07:00
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void __init x86_init_uint_noop(unsigned int unused) { }
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2009-11-10 17:46:12 +07:00
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int __init iommu_init_noop(void) { return 0; }
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2009-11-16 09:44:30 +07:00
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void iommu_shutdown_noop(void) { }
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2017-11-09 20:27:35 +07:00
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bool __init bool_x86_init_noop(void) { return false; }
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void x86_op_int_noop(int cpu) { }
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2009-08-19 19:48:38 +07:00
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/*
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* The platform setup functions are preset with the default functions
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* for standard PC hardware.
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*/
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2009-09-16 13:42:26 +07:00
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struct x86_init_ops x86_init __initdata = {
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2009-08-19 19:43:56 +07:00
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.resources = {
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2011-03-09 01:36:19 +07:00
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.probe_roms = probe_roms,
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2009-08-19 19:55:50 +07:00
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.reserve_resources = reserve_standard_io_resources,
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2017-01-28 15:58:49 +07:00
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.memory_setup = e820__memory_setup_default,
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2009-08-19 19:43:56 +07:00
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},
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2009-08-20 17:05:01 +07:00
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.mpparse = {
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.mpc_record = x86_init_uint_noop,
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2009-08-20 14:27:29 +07:00
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.setup_ioapic_ids = x86_init_noop,
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2009-08-20 15:41:58 +07:00
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.mpc_apic_id = default_mpc_apic_id,
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2009-08-20 17:18:32 +07:00
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.smp_read_mpc_oem = default_smp_read_mpc_oem,
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2009-08-20 17:34:47 +07:00
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.mpc_oem_bus_info = default_mpc_oem_bus_info,
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2009-08-20 16:11:52 +07:00
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.find_smp_config = default_find_smp_config,
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.get_smp_config = default_get_smp_config,
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2009-08-20 17:05:01 +07:00
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},
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2009-08-20 14:41:38 +07:00
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.irqs = {
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.pre_vector_init = init_ISA_irqs,
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2009-08-20 14:59:09 +07:00
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.intr_init = native_init_IRQ,
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2009-08-20 15:35:46 +07:00
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.trap_init = x86_init_noop,
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2017-09-13 16:12:52 +07:00
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.intr_mode_init = apic_intr_mode_init
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2009-08-20 14:41:38 +07:00
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},
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2009-08-20 18:04:10 +07:00
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.oem = {
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.arch_setup = x86_init_noop,
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2009-08-20 18:19:57 +07:00
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.banner = default_banner,
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2009-08-20 18:04:10 +07:00
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},
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2009-08-20 19:30:02 +07:00
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.paging = {
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2012-08-22 03:22:38 +07:00
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.pagetable_init = native_pagetable_init,
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2009-08-20 19:30:02 +07:00
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},
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2009-08-19 17:35:53 +07:00
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.timers = {
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.setup_percpu_clockev = setup_boot_APIC_clock,
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2009-08-19 20:37:03 +07:00
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.timer_init = hpet_time_init,
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2011-02-14 23:13:31 +07:00
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.wallclock_init = x86_init_noop,
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2009-08-19 17:35:53 +07:00
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},
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2009-11-10 17:46:12 +07:00
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.iommu = {
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.iommu_init = iommu_init_noop,
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},
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2009-08-29 21:24:51 +07:00
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.pci = {
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.init = x86_default_pci_init,
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2009-08-29 22:47:33 +07:00
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.init_irq = x86_default_pci_init_irq,
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2009-08-29 22:51:26 +07:00
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.fixup_irqs = x86_default_pci_fixup_irqs,
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2009-08-29 21:24:51 +07:00
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},
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2017-11-09 20:27:35 +07:00
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.hyper = {
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.init_platform = x86_init_noop,
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2017-11-09 20:27:38 +07:00
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.guest_late_init = x86_init_noop,
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2017-11-09 20:27:35 +07:00
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.x2apic_available = bool_x86_init_noop,
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.init_mem_mapping = x86_init_noop,
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},
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2009-08-19 17:35:53 +07:00
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};
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x86: delete __cpuinit usage from all x86 files
The __cpuinit type of throwaway sections might have made sense
some time ago when RAM was more constrained, but now the savings
do not offset the cost and complications. For example, the fix in
commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time")
is a good example of the nasty type of bugs that can be created
with improper use of the various __init prefixes.
After a discussion on LKML[1] it was decided that cpuinit should go
the way of devinit and be phased out. Once all the users are gone,
we can then finally remove the macros themselves from linux/init.h.
Note that some harmless section mismatch warnings may result, since
notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c)
are flagged as __cpuinit -- so if we remove the __cpuinit from
arch specific callers, we will also get section mismatch warnings.
As an intermediate step, we intend to turn the linux/init.h cpuinit
content into no-ops as early as possible, since that will get rid
of these warnings. In any case, they are temporary and harmless.
This removes all the arch/x86 uses of the __cpuinit macros from
all C files. x86 only had the one __CPUINIT used in assembly files,
and it wasn't paired off with a .previous or a __FINIT, so we can
delete it directly w/o any corresponding additional change there.
[1] https://lkml.org/lkml/2013/5/20/589
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: x86@kernel.org
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-06-19 05:23:59 +07:00
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struct x86_cpuinit_ops x86_cpuinit = {
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2012-02-07 21:52:44 +07:00
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.early_percpu_clock_init = x86_init_noop,
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2009-08-19 17:35:53 +07:00
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.setup_percpu_clockev = setup_secondary_APIC_clock,
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2009-08-19 19:48:38 +07:00
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};
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2009-08-20 22:06:25 +07:00
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2010-02-26 23:49:12 +07:00
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static void default_nmi_init(void) { };
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2016-08-09 06:29:06 +07:00
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struct x86_platform_ops x86_platform __ro_after_init = {
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2016-06-17 12:22:51 +07:00
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.calibrate_cpu = native_calibrate_cpu,
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2009-08-20 22:06:25 +07:00
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.calibrate_tsc = native_calibrate_tsc,
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2009-09-10 09:48:56 +07:00
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.get_wallclock = mach_get_cmos_time,
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.set_wallclock = mach_set_rtc_mmss,
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2009-10-27 14:34:44 +07:00
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.iommu_shutdown = iommu_shutdown_noop,
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2009-11-24 05:46:07 +07:00
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.is_untracked_pat_range = is_ISA_range,
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2010-07-05 22:03:18 +07:00
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.nmi_init = default_nmi_init,
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2011-11-10 20:43:05 +07:00
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.get_nmi_reason = default_get_nmi_reason,
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2012-02-13 20:07:27 +07:00
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.save_sched_clock_state = tsc_save_sched_clock_state,
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.restore_sched_clock_state = tsc_restore_sched_clock_state,
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2017-11-09 20:27:35 +07:00
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.hyper.pin_vcpu = x86_op_int_noop,
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2009-08-20 22:06:25 +07:00
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};
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2010-07-08 06:57:46 +07:00
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EXPORT_SYMBOL_GPL(x86_platform);
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2013-08-10 03:27:06 +07:00
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#if defined(CONFIG_PCI_MSI)
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2016-08-09 06:29:06 +07:00
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struct x86_msi_ops x86_msi __ro_after_init = {
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2012-09-26 17:44:37 +07:00
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.setup_msi_irqs = native_setup_msi_irqs,
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.teardown_msi_irq = native_teardown_msi_irq,
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.teardown_msi_irqs = default_teardown_msi_irqs,
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.restore_msi_irqs = default_restore_msi_irqs,
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2010-10-07 03:12:28 +07:00
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};
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2012-03-28 23:37:36 +07:00
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2013-08-10 03:27:06 +07:00
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/* MSI arch specific hooks */
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int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
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{
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return x86_msi.setup_msi_irqs(dev, nvec, type);
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}
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void arch_teardown_msi_irqs(struct pci_dev *dev)
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{
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x86_msi.teardown_msi_irqs(dev);
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}
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void arch_teardown_msi_irq(unsigned int irq)
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{
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x86_msi.teardown_msi_irq(irq);
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}
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2013-12-04 12:09:16 +07:00
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void arch_restore_msi_irqs(struct pci_dev *dev)
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2013-08-10 03:27:06 +07:00
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{
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2013-12-04 12:09:16 +07:00
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x86_msi.restore_msi_irqs(dev);
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2013-08-10 03:27:06 +07:00
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}
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#endif
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2016-08-09 06:29:06 +07:00
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struct x86_io_apic_ops x86_io_apic_ops __ro_after_init = {
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2012-09-26 17:44:35 +07:00
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.read = native_io_apic_read,
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.disable = native_disable_io_apic,
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2012-03-28 23:37:36 +07:00
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};
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