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316 lines
9.9 KiB
316 lines
9.9 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _ASM_X86_PLATFORM_H |
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#define _ASM_X86_PLATFORM_H |
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#include <asm/bootparam.h> |
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struct ghcb; |
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struct mpc_bus; |
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struct mpc_cpu; |
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struct pt_regs; |
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struct mpc_table; |
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struct cpuinfo_x86; |
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struct irq_domain; |
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/** |
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* struct x86_init_mpparse - platform specific mpparse ops |
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* @setup_ioapic_ids: platform specific ioapic id override |
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* @find_smp_config: find the smp configuration |
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* @get_smp_config: get the smp configuration |
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*/ |
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struct x86_init_mpparse { |
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void (*setup_ioapic_ids)(void); |
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void (*find_smp_config)(void); |
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void (*get_smp_config)(unsigned int early); |
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}; |
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/** |
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* struct x86_init_resources - platform specific resource related ops |
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* @probe_roms: probe BIOS roms |
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* @reserve_resources: reserve the standard resources for the |
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* platform |
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* @memory_setup: platform specific memory setup |
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* |
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*/ |
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struct x86_init_resources { |
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void (*probe_roms)(void); |
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void (*reserve_resources)(void); |
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char *(*memory_setup)(void); |
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}; |
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/** |
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* struct x86_init_irqs - platform specific interrupt setup |
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* @pre_vector_init: init code to run before interrupt vectors |
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* are set up. |
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* @intr_init: interrupt init code |
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* @intr_mode_select: interrupt delivery mode selection |
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* @intr_mode_init: interrupt delivery mode setup |
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* @create_pci_msi_domain: Create the PCI/MSI interrupt domain |
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*/ |
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struct x86_init_irqs { |
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void (*pre_vector_init)(void); |
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void (*intr_init)(void); |
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void (*intr_mode_select)(void); |
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void (*intr_mode_init)(void); |
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struct irq_domain *(*create_pci_msi_domain)(void); |
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}; |
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/** |
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* struct x86_init_oem - oem platform specific customizing functions |
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* @arch_setup: platform specific architecture setup |
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* @banner: print a platform specific banner |
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*/ |
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struct x86_init_oem { |
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void (*arch_setup)(void); |
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void (*banner)(void); |
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}; |
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/** |
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* struct x86_init_paging - platform specific paging functions |
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* @pagetable_init: platform specific paging initialization call to setup |
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* the kernel pagetables and prepare accessors functions. |
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* Callback must call paging_init(). Called once after the |
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* direct mapping for phys memory is available. |
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*/ |
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struct x86_init_paging { |
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void (*pagetable_init)(void); |
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}; |
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/** |
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* struct x86_init_timers - platform specific timer setup |
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* @setup_perpcu_clockev: set up the per cpu clock event device for the |
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* boot cpu |
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* @timer_init: initialize the platform timer (default PIT/HPET) |
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* @wallclock_init: init the wallclock device |
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*/ |
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struct x86_init_timers { |
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void (*setup_percpu_clockev)(void); |
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void (*timer_init)(void); |
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void (*wallclock_init)(void); |
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}; |
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/** |
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* struct x86_init_iommu - platform specific iommu setup |
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* @iommu_init: platform specific iommu setup |
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*/ |
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struct x86_init_iommu { |
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int (*iommu_init)(void); |
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}; |
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/** |
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* struct x86_init_pci - platform specific pci init functions |
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* @arch_init: platform specific pci arch init call |
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* @init: platform specific pci subsystem init |
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* @init_irq: platform specific pci irq init |
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* @fixup_irqs: platform specific pci irq fixup |
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*/ |
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struct x86_init_pci { |
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int (*arch_init)(void); |
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int (*init)(void); |
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void (*init_irq)(void); |
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void (*fixup_irqs)(void); |
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}; |
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/** |
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* struct x86_hyper_init - x86 hypervisor init functions |
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* @init_platform: platform setup |
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* @guest_late_init: guest late init |
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* @x2apic_available: X2APIC detection |
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* @msi_ext_dest_id: MSI supports 15-bit APIC IDs |
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* @init_mem_mapping: setup early mappings during init_mem_mapping() |
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* @init_after_bootmem: guest init after boot allocator is finished |
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*/ |
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struct x86_hyper_init { |
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void (*init_platform)(void); |
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void (*guest_late_init)(void); |
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bool (*x2apic_available)(void); |
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bool (*msi_ext_dest_id)(void); |
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void (*init_mem_mapping)(void); |
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void (*init_after_bootmem)(void); |
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}; |
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/** |
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* struct x86_init_acpi - x86 ACPI init functions |
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* @set_root_poitner: set RSDP address |
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* @get_root_pointer: get RSDP address |
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* @reduced_hw_early_init: hardware reduced platform early init |
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*/ |
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struct x86_init_acpi { |
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void (*set_root_pointer)(u64 addr); |
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u64 (*get_root_pointer)(void); |
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void (*reduced_hw_early_init)(void); |
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}; |
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/** |
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* struct x86_init_ops - functions for platform specific setup |
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* |
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*/ |
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struct x86_init_ops { |
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struct x86_init_resources resources; |
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struct x86_init_mpparse mpparse; |
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struct x86_init_irqs irqs; |
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struct x86_init_oem oem; |
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struct x86_init_paging paging; |
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struct x86_init_timers timers; |
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struct x86_init_iommu iommu; |
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struct x86_init_pci pci; |
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struct x86_hyper_init hyper; |
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struct x86_init_acpi acpi; |
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}; |
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/** |
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* struct x86_cpuinit_ops - platform specific cpu hotplug setups |
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* @setup_percpu_clockev: set up the per cpu clock event device |
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* @early_percpu_clock_init: early init of the per cpu clock event device |
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*/ |
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struct x86_cpuinit_ops { |
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void (*setup_percpu_clockev)(void); |
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void (*early_percpu_clock_init)(void); |
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void (*fixup_cpu_id)(struct cpuinfo_x86 *c, int node); |
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}; |
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struct timespec64; |
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/** |
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* struct x86_legacy_devices - legacy x86 devices |
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* |
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* @pnpbios: this platform can have a PNPBIOS. If this is disabled the platform |
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* is known to never have a PNPBIOS. |
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* |
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* These are devices known to require LPC or ISA bus. The definition of legacy |
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* devices adheres to the ACPI 5.2.9.3 IA-PC Boot Architecture flag |
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* ACPI_FADT_LEGACY_DEVICES. These devices consist of user visible devices on |
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* the LPC or ISA bus. User visible devices are devices that have end-user |
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* accessible connectors (for example, LPT parallel port). Legacy devices on |
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* the LPC bus consist for example of serial and parallel ports, PS/2 keyboard |
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* / mouse, and the floppy disk controller. A system that lacks all known |
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* legacy devices can assume all devices can be detected exclusively via |
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* standard device enumeration mechanisms including the ACPI namespace. |
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* |
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* A system which has does not have ACPI_FADT_LEGACY_DEVICES enabled must not |
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* have any of the legacy devices enumerated below present. |
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*/ |
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struct x86_legacy_devices { |
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int pnpbios; |
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}; |
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/** |
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* enum x86_legacy_i8042_state - i8042 keyboard controller state |
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* @X86_LEGACY_I8042_PLATFORM_ABSENT: the controller is always absent on |
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* given platform/subarch. |
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* @X86_LEGACY_I8042_FIRMWARE_ABSENT: firmware reports that the controller |
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* is absent. |
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* @X86_LEGACY_i8042_EXPECTED_PRESENT: the controller is likely to be |
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* present, the i8042 driver should probe for controller existence. |
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*/ |
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enum x86_legacy_i8042_state { |
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X86_LEGACY_I8042_PLATFORM_ABSENT, |
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X86_LEGACY_I8042_FIRMWARE_ABSENT, |
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X86_LEGACY_I8042_EXPECTED_PRESENT, |
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}; |
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/** |
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* struct x86_legacy_features - legacy x86 features |
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* |
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* @i8042: indicated if we expect the device to have i8042 controller |
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* present. |
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* @rtc: this device has a CMOS real-time clock present |
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* @reserve_bios_regions: boot code will search for the EBDA address and the |
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* start of the 640k - 1M BIOS region. If false, the platform must |
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* ensure that its memory map correctly reserves sub-1MB regions as needed. |
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* @devices: legacy x86 devices, refer to struct x86_legacy_devices |
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* documentation for further details. |
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*/ |
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struct x86_legacy_features { |
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enum x86_legacy_i8042_state i8042; |
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int rtc; |
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int warm_reset; |
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int no_vga; |
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int reserve_bios_regions; |
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struct x86_legacy_devices devices; |
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}; |
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/** |
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* struct x86_hyper_runtime - x86 hypervisor specific runtime callbacks |
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* |
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* @pin_vcpu: pin current vcpu to specified physical |
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* cpu (run rarely) |
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* @sev_es_hcall_prepare: Load additional hypervisor-specific |
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* state into the GHCB when doing a VMMCALL under |
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* SEV-ES. Called from the #VC exception handler. |
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* @sev_es_hcall_finish: Copies state from the GHCB back into the |
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* processor (or pt_regs). Also runs checks on the |
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* state returned from the hypervisor after a |
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* VMMCALL under SEV-ES. Needs to return 'false' |
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* if the checks fail. Called from the #VC |
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* exception handler. |
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*/ |
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struct x86_hyper_runtime { |
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void (*pin_vcpu)(int cpu); |
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void (*sev_es_hcall_prepare)(struct ghcb *ghcb, struct pt_regs *regs); |
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bool (*sev_es_hcall_finish)(struct ghcb *ghcb, struct pt_regs *regs); |
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}; |
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/** |
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* struct x86_platform_ops - platform specific runtime functions |
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* @calibrate_cpu: calibrate CPU |
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* @calibrate_tsc: calibrate TSC, if different from CPU |
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* @get_wallclock: get time from HW clock like RTC etc. |
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* @set_wallclock: set time back to HW clock |
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* @is_untracked_pat_range exclude from PAT logic |
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* @nmi_init enable NMI on cpus |
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* @save_sched_clock_state: save state for sched_clock() on suspend |
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* @restore_sched_clock_state: restore state for sched_clock() on resume |
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* @apic_post_init: adjust apic if needed |
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* @legacy: legacy features |
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* @set_legacy_features: override legacy features. Use of this callback |
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* is highly discouraged. You should only need |
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* this if your hardware platform requires further |
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* custom fine tuning far beyond what may be |
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* possible in x86_early_init_platform_quirks() by |
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* only using the current x86_hardware_subarch |
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* semantics. |
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* @hyper: x86 hypervisor specific runtime callbacks |
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*/ |
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struct x86_platform_ops { |
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unsigned long (*calibrate_cpu)(void); |
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unsigned long (*calibrate_tsc)(void); |
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void (*get_wallclock)(struct timespec64 *ts); |
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int (*set_wallclock)(const struct timespec64 *ts); |
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void (*iommu_shutdown)(void); |
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bool (*is_untracked_pat_range)(u64 start, u64 end); |
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void (*nmi_init)(void); |
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unsigned char (*get_nmi_reason)(void); |
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void (*save_sched_clock_state)(void); |
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void (*restore_sched_clock_state)(void); |
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void (*apic_post_init)(void); |
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struct x86_legacy_features legacy; |
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void (*set_legacy_features)(void); |
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struct x86_hyper_runtime hyper; |
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}; |
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struct pci_dev; |
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struct x86_msi_ops { |
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void (*restore_msi_irqs)(struct pci_dev *dev); |
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}; |
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struct x86_apic_ops { |
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unsigned int (*io_apic_read) (unsigned int apic, unsigned int reg); |
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void (*restore)(void); |
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}; |
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extern struct x86_init_ops x86_init; |
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extern struct x86_cpuinit_ops x86_cpuinit; |
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extern struct x86_platform_ops x86_platform; |
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extern struct x86_msi_ops x86_msi; |
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extern struct x86_apic_ops x86_apic_ops; |
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extern void x86_early_init_platform_quirks(void); |
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extern void x86_init_noop(void); |
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extern void x86_init_uint_noop(unsigned int unused); |
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extern bool bool_x86_init_noop(void); |
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extern void x86_op_int_noop(int cpu); |
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extern bool x86_pnpbios_disabled(void); |
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#endif
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