5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
30 lines
700 B
C
30 lines
700 B
C
/* 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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