disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/arch/arm64/include/asm/acpi.h
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@@ -1,12 +1,9 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  *  Copyright (C) 2013-2014, Linaro Ltd.
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  *	Author: Al Stone <al.stone@linaro.org>
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  *	Author: Graeme Gregory <graeme.gregory@linaro.org>
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  *	Author: Hanjun Guo <hanjun.guo@linaro.org>
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- *
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- *  This program is free software; you can redistribute it and/or modify
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- *  it under the terms of the GNU General Public License version 2 as
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- *  published by the Free Software Foundation;
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  */
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 #ifndef _ASM_ACPI_H
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 #include <linux/efi.h>
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 #include <linux/memblock.h>
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 #include <linux/psci.h>
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+#include <linux/stddef.h>
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 #include <asm/cputype.h>
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 #include <asm/io.h>
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+#include <asm/ptrace.h>
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 #include <asm/smp_plat.h>
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 #include <asm/tlbflush.h>
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 /* Macros for consistency checks of the GICC subtable of MADT */
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-#define ACPI_MADT_GICC_LENGTH	\
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-	(acpi_gbl_FADT.header.revision < 6 ? 76 : 80)
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+
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+/*
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+ * MADT GICC minimum length refers to the MADT GICC structure table length as
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+ * defined in the earliest ACPI version supported on arm64, ie ACPI 5.1.
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+ *
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+ * The efficiency_class member was added to the
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+ * struct acpi_madt_generic_interrupt to represent the MADT GICC structure
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+ * "Processor Power Efficiency Class" field, added in ACPI 6.0 whose offset
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+ * is therefore used to delimit the MADT GICC structure minimum length
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+ * appropriately.
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+ */
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+#define ACPI_MADT_GICC_MIN_LENGTH   offsetof(  \
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+	struct acpi_madt_generic_interrupt, efficiency_class)
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 #define BAD_MADT_GICC_ENTRY(entry, end)					\
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-	(!(entry) || (entry)->header.length != ACPI_MADT_GICC_LENGTH ||	\
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-	(unsigned long)(entry) + ACPI_MADT_GICC_LENGTH > (end))
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+	(!(entry) || (entry)->header.length < ACPI_MADT_GICC_MIN_LENGTH || \
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+	(unsigned long)(entry) + (entry)->header.length > (end))
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+
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+#define ACPI_MADT_GICC_SPE  (offsetof(struct acpi_madt_generic_interrupt, \
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+	spe_interrupt) + sizeof(u16))
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 /* Basic configuration for ACPI */
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 #ifdef	CONFIG_ACPI
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 pgprot_t __acpi_get_mem_attribute(phys_addr_t addr);
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 /* ACPI table mapping after acpi_permanent_mmap is set */
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-static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys,
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-					    acpi_size size)
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-{
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-	/* For normal memory we already have a cacheable mapping. */
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-	if (memblock_is_map_memory(phys))
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-		return (void __iomem *)__phys_to_virt(phys);
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-
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-	/*
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-	 * We should still honor the memory's attribute here because
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-	 * crash dump kernel possibly excludes some ACPI (reclaim)
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-	 * regions from memblock list.
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-	 */
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-	return __ioremap(phys, size, __acpi_get_mem_attribute(phys));
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-}
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+void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size);
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 #define acpi_os_ioremap acpi_os_ioremap
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 typedef u64 phys_cpuid_t;
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 static inline void arch_fix_phys_package_id(int num, u32 slot) { }
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 void __init acpi_init_cpus(void);
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-
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+int apei_claim_sea(struct pt_regs *regs);
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 #else
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 static inline void acpi_init_cpus(void) { }
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+static inline int apei_claim_sea(struct pt_regs *regs) { return -ENOENT; }
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 #endif /* CONFIG_ACPI */
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 #ifdef CONFIG_ARM64_ACPI_PARKING_PROTOCOL