/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _ASM_X86_ACPI_H
#define _ASM_X86_ACPI_H
/*
* Copyright ( C ) 2001 Paul Diefenbaugh < paul . s . diefenbaugh @ intel . com >
* Copyright ( C ) 2001 Patrick Mochel < mochel @ osdl . org >
*/
#include <acpi/proc_cap_intel.h>
#include <asm /numa.h>
#include <asm /fixmap.h>
#include <asm /processor.h>
#include <asm /mmu.h>
#include <asm /mpspec.h>
#include <asm /x86_init.h>
#include <asm /cpufeature.h>
#include <asm /irq_vectors.h>
#include <asm /xen/hypervisor.h>
#include <xen/xen.h>
#ifdef CONFIG_ACPI_APEI
# include <asm /pgtable_types.h>
#endif
#ifdef CONFIG_ACPI
extern int acpi_lapic;
extern int acpi_ioapic;
extern int acpi_noirq;
extern int acpi_strict;
extern int acpi_disabled;
extern int acpi_pci_disabled;
extern int acpi_skip_timer_override;
extern int acpi_use_timer_override;
extern int acpi_fix_pin2_polarity;
extern int acpi_disable_cmcff;
extern bool acpi_int_src_ovr[NR_IRQS_LEGACY];
extern u8 acpi_sci_flags;
extern u32 acpi_sci_override_gsi;
void acpi_pic_sci_set_trigger(unsigned int , u16);
struct device;
extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
int trigger, int polarity);
extern void (*__acpi_unregister_gsi)(u32 gsi);
static inline void disable_acpi(void )
{
acpi_disabled = 1 ;
acpi_pci_disabled = 1 ;
acpi_noirq = 1 ;
}
extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
extern int acpi_blacklisted(void );
static inline void acpi_noirq_set(void ) { acpi_noirq = 1 ; }
static inline void acpi_disable_pci(void )
{
acpi_pci_disabled = 1 ;
acpi_noirq_set();
}
/* Low-level suspend routine. */
extern int (*acpi_suspend_lowlevel)(void );
/* Physical address to resume after wakeup */
unsigned long acpi_get_wakeup_address(void );
static inline bool acpi_skip_set_wakeup_address(void )
{
return cpu_feature_enabled(X86_FEATURE_XENPV);
}
#define acpi_skip_set_wakeup_address acpi_skip_set_wakeup_address
union acpi_subtable_headers;
int __init acpi_parse_mp_wake(union acpi_subtable_headers *header,
const unsigned long end);
void asm_acpi_mp_play_dead(u64 reset_vector, u64 pgd_pa);
/*
* Check if the CPU can handle C2 and deeper
*/
static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
{
/*
* Early models ( < = 5 ) of AMD Opterons are not supposed to go into
* C2 state .
*
* Steppings 0 x0A and later are good
*/
if (boot_cpu_data.x86 == 0 x0F &&
boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
boot_cpu_data.x86_model <= 0 x05 &&
boot_cpu_data.x86_stepping < 0 x0A)
return 1 ;
else if (boot_cpu_has(X86_BUG_AMD_APIC_C1E))
return 1 ;
else
return max_cstate;
}
static inline bool arch_has_acpi_pdc(void )
{
struct cpuinfo_x86 *c = &cpu_data(0 );
return (c->x86_vendor == X86_VENDOR_INTEL ||
c->x86_vendor == X86_VENDOR_CENTAUR);
}
static inline void arch_acpi_set_proc_cap_bits(u32 *cap)
{
struct cpuinfo_x86 *c = &cpu_data(0 );
*cap |= ACPI_PROC_CAP_C_CAPABILITY_SMP;
/* Enable coordination with firmware's _TSD info */
*cap |= ACPI_PROC_CAP_SMP_T_SWCOORD;
if (cpu_has(c, X86_FEATURE_EST))
*cap |= ACPI_PROC_CAP_EST_CAPABILITY_SWSMP;
if (cpu_has(c, X86_FEATURE_ACPI))
*cap |= ACPI_PROC_CAP_T_FFH;
if (cpu_has(c, X86_FEATURE_HWP))
*cap |= ACPI_PROC_CAP_COLLAB_PROC_PERF;
/*
* If mwait / monitor is unsupported , C_C1_FFH and
* C2 / C3_FFH will be disabled .
*/
if (!cpu_has(c, X86_FEATURE_MWAIT) ||
boot_option_idle_override == IDLE_NOMWAIT)
*cap &= ~(ACPI_PROC_CAP_C_C1_FFH | ACPI_PROC_CAP_C_C2C3_FFH);
if (xen_initial_domain()) {
/*
* When Linux is running as Xen dom0 , the hypervisor is the
* entity in charge of the processor power management , and so
* Xen needs to check the OS capabilities reported in the
* processor capabilities buffer matches what the hypervisor
* driver supports .
*/
xen_sanitize_proc_cap_bits(cap);
}
}
static inline bool acpi_has_cpu_in_madt(void )
{
return !!acpi_lapic;
}
#define ACPI_HAVE_ARCH_SET_ROOT_POINTER
static __always_inline void acpi_arch_set_root_pointer(u64 addr)
{
x86_init.acpi.set_root_pointer(addr);
}
#define ACPI_HAVE_ARCH_GET_ROOT_POINTER
static __always_inline u64 acpi_arch_get_root_pointer(void )
{
return x86_init.acpi.get_root_pointer();
}
void acpi_generic_reduced_hw_init(void );
void x86_default_set_root_pointer(u64 addr);
u64 x86_default_get_root_pointer(void );
#ifdef CONFIG_XEN_PV
/* A Xen PV domain needs a special acpi_os_ioremap() handling. */
extern void __iomem * (*acpi_os_ioremap)(acpi_physical_address phys,
acpi_size size);
void __iomem *x86_acpi_os_ioremap(acpi_physical_address phys, acpi_size size);
#define acpi_os_ioremap acpi_os_ioremap
#endif
#else /* !CONFIG_ACPI */
#define acpi_lapic 0
#define acpi_ioapic 0
#define acpi_disable_cmcff 0
static inline void acpi_noirq_set(void ) { }
static inline void acpi_disable_pci(void ) { }
static inline void disable_acpi(void ) { }
static inline void acpi_generic_reduced_hw_init(void ) { }
static inline void x86_default_set_root_pointer(u64 addr) { }
static inline u64 x86_default_get_root_pointer(void )
{
return 0 ;
}
#endif /* !CONFIG_ACPI */
#define ARCH_HAS_POWER_INIT 1
#ifdef CONFIG_ACPI_NUMA
extern int x86_acpi_numa_init(void );
#endif /* CONFIG_ACPI_NUMA */
struct cper_ia_proc_ctx;
#ifdef CONFIG_ACPI_APEI
static inline pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr)
{
/*
* We currently have no way to look up the EFI memory map
* attributes for a region in a consistent way , because the
* memmap is discarded after efi_free_boot_services ( ) . So if
* you call efi_mem_attributes ( ) during boot and at runtime ,
* you could theoretically see different attributes .
*
* We are yet to see any x86 platforms that require anything
* other than PAGE_KERNEL ( some ARM64 platforms require the
* equivalent of PAGE_KERNEL_NOCACHE ) . Additionally , if SME
* is active , the ACPI information will not be encrypted ,
* so return PAGE_KERNEL_NOENC until we know differently .
*/
return PAGE_KERNEL_NOENC;
}
int arch_apei_report_x86_error(struct cper_ia_proc_ctx *ctx_info,
u64 lapic_id);
#else
static inline int arch_apei_report_x86_error(struct cper_ia_proc_ctx *ctx_info,
u64 lapic_id)
{
return -EINVAL;
}
#endif
#define ACPI_TABLE_UPGRADE_MAX_PHYS (max_low_pfn_mapped << PAGE_SHIFT)
#endif /* _ASM_X86_ACPI_H */
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