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29 lines
700 B
29 lines
700 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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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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#include <asm/e820/api.h> |
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extern int force_iommu, no_iommu; |
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extern int iommu_detected; |
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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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if (e820__mapped_all(start, end, E820_TYPE_RESERVED)) |
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return 0; |
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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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#endif /* _ASM_X86_IOMMU_H */
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