1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 #ifndef _ASM_X86_ACPI_H
3 #define _ASM_X86_ACPI_H
6 * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
7 * Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
9 #include <acpi/proc_cap_intel.h>
12 #include <asm/fixmap.h>
13 #include <asm/processor.h>
15 #include <asm/mpspec.h>
16 #include <asm/x86_init.h>
17 #include <asm/cpufeature.h>
18 #include <asm/irq_vectors.h>
20 #ifdef CONFIG_ACPI_APEI
21 # include <asm/pgtable_types.h>
25 extern int acpi_lapic;
26 extern int acpi_ioapic;
27 extern int acpi_noirq;
28 extern int acpi_strict;
29 extern int acpi_disabled;
30 extern int acpi_pci_disabled;
31 extern int acpi_skip_timer_override;
32 extern int acpi_use_timer_override;
33 extern int acpi_fix_pin2_polarity;
34 extern int acpi_disable_cmcff;
35 extern bool acpi_int_src_ovr[NR_IRQS_LEGACY];
37 extern u8 acpi_sci_flags;
38 extern u32 acpi_sci_override_gsi;
39 void acpi_pic_sci_set_trigger(unsigned int, u16);
43 extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
44 int trigger, int polarity);
45 extern void (*__acpi_unregister_gsi)(u32 gsi);
47 static inline void disable_acpi(void)
50 acpi_pci_disabled = 1;
54 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
56 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
57 static inline void acpi_disable_pci(void)
59 acpi_pci_disabled = 1;
63 /* Low-level suspend routine. */
64 extern int (*acpi_suspend_lowlevel)(void);
66 /* Physical address to resume after wakeup */
67 unsigned long acpi_get_wakeup_address(void);
69 static inline bool acpi_skip_set_wakeup_address(void)
71 return cpu_feature_enabled(X86_FEATURE_XENPV);
74 #define acpi_skip_set_wakeup_address acpi_skip_set_wakeup_address
77 * Check if the CPU can handle C2 and deeper
79 static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
82 * Early models (<=5) of AMD Opterons are not supposed to go into
85 * Steppings 0x0A and later are good
87 if (boot_cpu_data.x86 == 0x0F &&
88 boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
89 boot_cpu_data.x86_model <= 0x05 &&
90 boot_cpu_data.x86_stepping < 0x0A)
92 else if (boot_cpu_has(X86_BUG_AMD_APIC_C1E))
98 static inline bool arch_has_acpi_pdc(void)
100 struct cpuinfo_x86 *c = &cpu_data(0);
101 return (c->x86_vendor == X86_VENDOR_INTEL ||
102 c->x86_vendor == X86_VENDOR_CENTAUR);
105 static inline void arch_acpi_set_proc_cap_bits(u32 *cap)
107 struct cpuinfo_x86 *c = &cpu_data(0);
109 *cap |= ACPI_PROC_CAP_C_CAPABILITY_SMP;
111 /* Enable coordination with firmware's _TSD info */
112 *cap |= ACPI_PROC_CAP_SMP_T_SWCOORD;
114 if (cpu_has(c, X86_FEATURE_EST))
115 *cap |= ACPI_PROC_CAP_EST_CAPABILITY_SWSMP;
117 if (cpu_has(c, X86_FEATURE_ACPI))
118 *cap |= ACPI_PROC_CAP_T_FFH;
120 if (cpu_has(c, X86_FEATURE_HWP))
121 *cap |= ACPI_PROC_CAP_COLLAB_PROC_PERF;
124 * If mwait/monitor is unsupported, C_C1_FFH and
125 * C2/C3_FFH will be disabled.
127 if (!cpu_has(c, X86_FEATURE_MWAIT) ||
128 boot_option_idle_override == IDLE_NOMWAIT)
129 *cap &= ~(ACPI_PROC_CAP_C_C1_FFH | ACPI_PROC_CAP_C_C2C3_FFH);
132 static inline bool acpi_has_cpu_in_madt(void)
137 #define ACPI_HAVE_ARCH_SET_ROOT_POINTER
138 static inline void acpi_arch_set_root_pointer(u64 addr)
140 x86_init.acpi.set_root_pointer(addr);
143 #define ACPI_HAVE_ARCH_GET_ROOT_POINTER
144 static inline u64 acpi_arch_get_root_pointer(void)
146 return x86_init.acpi.get_root_pointer();
149 void acpi_generic_reduced_hw_init(void);
151 void x86_default_set_root_pointer(u64 addr);
152 u64 x86_default_get_root_pointer(void);
154 #else /* !CONFIG_ACPI */
157 #define acpi_ioapic 0
158 #define acpi_disable_cmcff 0
159 static inline void acpi_noirq_set(void) { }
160 static inline void acpi_disable_pci(void) { }
161 static inline void disable_acpi(void) { }
163 static inline void acpi_generic_reduced_hw_init(void) { }
165 static inline void x86_default_set_root_pointer(u64 addr) { }
167 static inline u64 x86_default_get_root_pointer(void)
172 #endif /* !CONFIG_ACPI */
174 #define ARCH_HAS_POWER_INIT 1
176 #ifdef CONFIG_ACPI_NUMA
177 extern int x86_acpi_numa_init(void);
178 #endif /* CONFIG_ACPI_NUMA */
180 struct cper_ia_proc_ctx;
182 #ifdef CONFIG_ACPI_APEI
183 static inline pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr)
186 * We currently have no way to look up the EFI memory map
187 * attributes for a region in a consistent way, because the
188 * memmap is discarded after efi_free_boot_services(). So if
189 * you call efi_mem_attributes() during boot and at runtime,
190 * you could theoretically see different attributes.
192 * We are yet to see any x86 platforms that require anything
193 * other than PAGE_KERNEL (some ARM64 platforms require the
194 * equivalent of PAGE_KERNEL_NOCACHE). Additionally, if SME
195 * is active, the ACPI information will not be encrypted,
196 * so return PAGE_KERNEL_NOENC until we know differently.
198 return PAGE_KERNEL_NOENC;
201 int arch_apei_report_x86_error(struct cper_ia_proc_ctx *ctx_info,
204 static inline int arch_apei_report_x86_error(struct cper_ia_proc_ctx *ctx_info,
211 #define ACPI_TABLE_UPGRADE_MAX_PHYS (max_low_pfn_mapped << PAGE_SHIFT)
213 #endif /* _ASM_X86_ACPI_H */