change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/arch/x86/include/asm/iommu.h
..
..
@@ -2,11 +2,30 @@
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 #ifndef _ASM_X86_IOMMU_H
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 #define _ASM_X86_IOMMU_H
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+#include <linux/acpi.h>
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+
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+#include <asm/e820/api.h>
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+
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 extern int force_iommu, no_iommu;
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 extern int iommu_detected;
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-extern int iommu_pass_through;
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 /* 10 seconds */
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 #define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000)
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+static inline int __init
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+arch_rmrr_sanity_check(struct acpi_dmar_reserved_memory *rmrr)
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+{
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+	u64 start = rmrr->base_address;
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+	u64 end = rmrr->end_address + 1;
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+	int entry_type;
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+
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+	entry_type = e820__get_entry_type(start, end);
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+	if (entry_type == E820_TYPE_RESERVED || entry_type == E820_TYPE_NVS)
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+		return 0;
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+
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+	pr_err(FW_BUG "No firmware reserved region can cover this RMRR [%#018Lx-%#018Lx], contact BIOS vendor for fixes\n",
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+	       start, end - 1);
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+	return -EINVAL;
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+}
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+
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 #endif /* _ASM_X86_IOMMU_H */