From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- arch/x86/include/asm/iommu.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 arch/x86/include/asm/iommu.h (limited to 'arch/x86/include/asm/iommu.h') diff --git a/arch/x86/include/asm/iommu.h b/arch/x86/include/asm/iommu.h new file mode 100644 index 000000000..7a983119b --- /dev/null +++ b/arch/x86/include/asm/iommu.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_X86_IOMMU_H +#define _ASM_X86_IOMMU_H + +#include + +#include + +extern int force_iommu, no_iommu; +extern int iommu_detected; + +/* 10 seconds */ +#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000) + +static inline int __init +arch_rmrr_sanity_check(struct acpi_dmar_reserved_memory *rmrr) +{ + u64 start = rmrr->base_address; + u64 end = rmrr->end_address + 1; + int entry_type; + + entry_type = e820__get_entry_type(start, end); + if (entry_type == E820_TYPE_RESERVED || entry_type == E820_TYPE_NVS) + return 0; + + pr_err(FW_BUG "No firmware reserved region can cover this RMRR [%#018Lx-%#018Lx], contact BIOS vendor for fixes\n", + start, end - 1); + return -EINVAL; +} + +#endif /* _ASM_X86_IOMMU_H */ -- cgit v1.2.3