Line data    Source code

       1             : /* SPDX-License-Identifier: GPL-2.0-or-later */
       2             : #ifndef _ASM_X86_ACPI_H
       3             : #define _ASM_X86_ACPI_H
       4             : 
       5             : /*
       6             :  *  Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
       7             :  *  Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
       8             :  */
       9             : #include <acpi/pdc_intel.h>
      10             : 
      11             : #include <asm/numa.h>
      12             : #include <asm/fixmap.h>
      13             : #include <asm/processor.h>
      14             : #include <asm/mmu.h>
      15             : #include <asm/mpspec.h>
      16             : #include <asm/x86_init.h>
      17             : 
      18             : #ifdef CONFIG_ACPI_APEI
      19             : # include <asm/pgtable_types.h>
      20             : #endif
      21             : 
      22             : #ifdef CONFIG_ACPI
      23             : extern int acpi_lapic;
      24             : extern int acpi_ioapic;
      25             : extern int acpi_noirq;
      26             : extern int acpi_strict;
      27             : extern int acpi_disabled;
      28             : extern int acpi_pci_disabled;
      29             : extern int acpi_skip_timer_override;
      30             : extern int acpi_use_timer_override;
      31             : extern int acpi_fix_pin2_polarity;
      32             : extern int acpi_disable_cmcff;
      33             : 
      34             : extern u8 acpi_sci_flags;
      35             : extern u32 acpi_sci_override_gsi;
      36             : void acpi_pic_sci_set_trigger(unsigned int, u16);
      37             : 
      38             : struct device;
      39             : 
      40             : extern int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
      41             :                                   int trigger, int polarity);
      42             : extern void (*__acpi_unregister_gsi)(u32 gsi);
      43             : 
      44             : static inline void disable_acpi(void)
      45             : {
      46             :         acpi_disabled = 1;
      47             :         acpi_pci_disabled = 1;
      48             :         acpi_noirq = 1;
      49             : }
      50             : 
      51             : extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
      52             : 
      53             : static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
      54             : static inline void acpi_disable_pci(void)
      55             : {
      56             :         acpi_pci_disabled = 1;
      57             :         acpi_noirq_set();
      58             : }
      59             : 
      60             : /* Low-level suspend routine. */
      61             : extern int (*acpi_suspend_lowlevel)(void);
      62             : 
      63             : /* Physical address to resume after wakeup */
      64             : unsigned long acpi_get_wakeup_address(void);
      65             : 
      66             : /*
      67             :  * Check if the CPU can handle C2 and deeper
      68             :  */
      69             : static inline unsigned int acpi_processor_cstate_check(unsigned int max_cstate)
      70             : {
      71             :         /*
      72             :          * Early models (<=5) of AMD Opterons are not supposed to go into
      73             :          * C2 state.
      74             :          *
      75             :          * Steppings 0x0A and later are good
      76             :          */
      77             :         if (boot_cpu_data.x86 == 0x0F &&
      78             :             boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
      79             :             boot_cpu_data.x86_model <= 0x05 &&
      80             :             boot_cpu_data.x86_stepping < 0x0A)
      81             :                 return 1;
      82             :         else if (boot_cpu_has(X86_BUG_AMD_APIC_C1E))
      83             :                 return 1;
      84             :         else
      85             :                 return max_cstate;
      86             : }
      87             : 
      88             : static inline bool arch_has_acpi_pdc(void)
      89             : {
      90             :         struct cpuinfo_x86 *c = &cpu_data(0);
      91             :         return (c->x86_vendor == X86_VENDOR_INTEL ||
      92             :                 c->x86_vendor == X86_VENDOR_CENTAUR);
      93             : }
      94             : 
      95             : static inline void arch_acpi_set_pdc_bits(u32 *buf)
      96             : {
      97             :         struct cpuinfo_x86 *c = &cpu_data(0);
      98             : 
      99             :         buf[2] |= ACPI_PDC_C_CAPABILITY_SMP;
     100             : 
     101             :         if (cpu_has(c, X86_FEATURE_EST))
     102             :                 buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
     103             : 
     104             :         if (cpu_has(c, X86_FEATURE_ACPI))
     105             :                 buf[2] |= ACPI_PDC_T_FFH;
     106             : 
     107             :         /*
     108             :          * If mwait/monitor is unsupported, C2/C3_FFH will be disabled
     109             :          */
     110             :         if (!cpu_has(c, X86_FEATURE_MWAIT))
     111             :                 buf[2] &= ~(ACPI_PDC_C_C2C3_FFH);
     112             : }
     113             : 
     114             : static inline bool acpi_has_cpu_in_madt(void)
     115             : {
     116             :         return !!acpi_lapic;
     117             : }
     118             : 
     119             : #define ACPI_HAVE_ARCH_SET_ROOT_POINTER
     120             : static inline void acpi_arch_set_root_pointer(u64 addr)
     121             : {
     122             :         x86_init.acpi.set_root_pointer(addr);
     123             : }
     124             : 
     125             : #define ACPI_HAVE_ARCH_GET_ROOT_POINTER
     126             : static inline u64 acpi_arch_get_root_pointer(void)
     127             : {
     128             :         return x86_init.acpi.get_root_pointer();
     129             : }
     130             : 
     131             : void acpi_generic_reduced_hw_init(void);
     132             : 
     133             : void x86_default_set_root_pointer(u64 addr);
     134             : u64 x86_default_get_root_pointer(void);
     135             : 
     136             : #else /* !CONFIG_ACPI */
     137             : 
     138             : #define acpi_lapic 0
     139             : #define acpi_ioapic 0
     140             : #define acpi_disable_cmcff 0
     141             : static inline void acpi_noirq_set(void) { }
     142             : static inline void acpi_disable_pci(void) { }
     143             : static inline void disable_acpi(void) { }
     144             : 
     145           0 : static inline void acpi_generic_reduced_hw_init(void) { }
     146             : 
     147           0 : static inline void x86_default_set_root_pointer(u64 addr) { }
     148             : 
     149           0 : static inline u64 x86_default_get_root_pointer(void)
     150             : {
     151           0 :         return 0;
     152             : }
     153             : 
     154             : #endif /* !CONFIG_ACPI */
     155             : 
     156             : #define ARCH_HAS_POWER_INIT     1
     157             : 
     158             : #ifdef CONFIG_ACPI_NUMA
     159             : extern int x86_acpi_numa_init(void);
     160             : #endif /* CONFIG_ACPI_NUMA */
     161             : 
     162             : struct cper_ia_proc_ctx;
     163             : 
     164             : #ifdef CONFIG_ACPI_APEI
     165             : static inline pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr)
     166             : {
     167             :         /*
     168             :          * We currently have no way to look up the EFI memory map
     169             :          * attributes for a region in a consistent way, because the
     170             :          * memmap is discarded after efi_free_boot_services(). So if
     171             :          * you call efi_mem_attributes() during boot and at runtime,
     172             :          * you could theoretically see different attributes.
     173             :          *
     174             :          * We are yet to see any x86 platforms that require anything
     175             :          * other than PAGE_KERNEL (some ARM64 platforms require the
     176             :          * equivalent of PAGE_KERNEL_NOCACHE). Additionally, if SME
     177             :          * is active, the ACPI information will not be encrypted,
     178             :          * so return PAGE_KERNEL_NOENC until we know differently.
     179             :          */
     180             :         return PAGE_KERNEL_NOENC;
     181             : }
     182             : 
     183             : int arch_apei_report_x86_error(struct cper_ia_proc_ctx *ctx_info,
     184             :                                u64 lapic_id);
     185             : #else
     186             : static inline int arch_apei_report_x86_error(struct cper_ia_proc_ctx *ctx_info,
     187             :                                              u64 lapic_id)
     188             : {
     189             :         return -EINVAL;
     190             : }
     191             : #endif
     192             : 
     193             : #define ACPI_TABLE_UPGRADE_MAX_PHYS (max_low_pfn_mapped << PAGE_SHIFT)
     194             : 
     195             : #endif /* _ASM_X86_ACPI_H */