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b24413180f
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
263 lines
8.4 KiB
C
263 lines
8.4 KiB
C
/* 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 mpc_bus;
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struct mpc_cpu;
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struct mpc_table;
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struct cpuinfo_x86;
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/**
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* struct x86_init_mpparse - platform specific mpparse ops
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* @mpc_record: platform specific mpc record accounting
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* @setup_ioapic_ids: platform specific ioapic id override
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* @mpc_apic_id: platform specific mpc apic id assignment
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* @smp_read_mpc_oem: platform specific oem mpc table setup
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* @mpc_oem_pci_bus: platform specific pci bus setup (default NULL)
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* @mpc_oem_bus_info: platform specific mpc bus info
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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 (*mpc_record)(unsigned int mode);
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void (*setup_ioapic_ids)(void);
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int (*mpc_apic_id)(struct mpc_cpu *m);
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void (*smp_read_mpc_oem)(struct mpc_table *mpc);
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void (*mpc_oem_pci_bus)(struct mpc_bus *m);
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void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name);
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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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* @trap_init: platform specific trap setup
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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 (*trap_init)(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_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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};
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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 timespec;
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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 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_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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*/
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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 timespec *ts);
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int (*set_wallclock)(const struct timespec *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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};
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struct pci_dev;
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struct x86_msi_ops {
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int (*setup_msi_irqs)(struct pci_dev *dev, int nvec, int type);
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void (*teardown_msi_irq)(unsigned int irq);
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void (*teardown_msi_irqs)(struct pci_dev *dev);
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void (*restore_msi_irqs)(struct pci_dev *dev);
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};
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struct x86_io_apic_ops {
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unsigned int (*read) (unsigned int apic, unsigned int reg);
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void (*disable)(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_io_apic_ops x86_io_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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#endif
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