From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id D5B543D647C; Tue, 29 Sep 2026 22:36:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790721399; cv=none; b=gdyenNX4VO+o4d93Oo6NdZwHmCp9O81ocS+p9UJw5omRM16wTcwPM7KFVL2LileFOhewOnfsk8A3Wv0cSdtqmDIEwiBAKqQdzRXAOdEFZ1awC7HS23I2sYTpG1z/doPwzXTlNDdaDE2pISsWC43QShkRx3gfngV7XGPetJMV9e0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790721399; c=relaxed/simple; bh=Ymf/cgNOvtF8j7qbvczslQ4pKC6Lx1W98l3M/V1vP2A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=aKErOOxrhvn3+5SM4sUV5WlplyIgOqXWFWPDQ7EEUxw3Y0qDBXoQQKFS9+DKE1G+g7TnK034CI17Z62Im/J0Q0/yxOTxOVjmf2PPO+k+8qiC2AcLVGZyRe2j5Ag6zU7k7ebReORs4cj5/SBONndMGqryUQdfC6izbt2jIdmo0So= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=gVgS3iK4; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="gVgS3iK4" Received: from mrdev.corp.microsoft.com (192-184-212-33.fiber.dynamic.sonic.net [192.184.212.33]) by linux.microsoft.com (Postfix) with ESMTPSA id 2584020B716D; Tue, 29 Sep 2026 15:35:44 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 2584020B716D DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1790721344; bh=FUH5ngTZgAQ97CtC2m8tO43RnFT+/gvng8S29Lw4Qso=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gVgS3iK45fZiK2yx7MyKjUuFX2rYX5l0iu/PpmCFmKTrPrqH5xdKl3YfHARpVHMop WKK5WbxF66h3hkFhq/AjpD4HGwC63c8DDtpKtDS7OlwJRrIYjyDk8vyDJ0u/po2SYd f8MnPTpcXeWdvPXViOhy2eEONCqTQgooUkqlEq84= From: Mukesh R To: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, linux-arch@vger.kernel.org Cc: jgg@nvidia.com, jacob.pan@linux.microsoft.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, tglx@kernel.org, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, arnd@arndb.de, mrathor@linux.microsoft.com Subject: [PATCH V2 3/4] mshv: Import data structs around device domains from hyperv headers Date: Tue, 29 Sep 2026 15:36:21 -0700 Message-ID: <20260929223622.778617-4-mrathor@linux.microsoft.com> X-Mailer: git-send-email 2.51.2.vfs.0.1 In-Reply-To: <20260929223622.778617-1-mrathor@linux.microsoft.com> References: <20260929223622.778617-1-mrathor@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Copy/import from Hyper-V public headers, definitions and declarations that are related to creating iommu domains in the hypervisor, attaching devices to them, doing the reverse, etc. Signed-off-by: Mukesh R --- include/hyperv/hvgdk_mini.h | 9 ++++ include/hyperv/hvhdk_mini.h | 87 +++++++++++++++++++++++++++++++++++++ 2 files changed, 96 insertions(+) diff --git a/include/hyperv/hvgdk_mini.h b/include/hyperv/hvgdk_mini.h index 6a4e8b9d570f..3b74f3c0229d 100644 --- a/include/hyperv/hvgdk_mini.h +++ b/include/hyperv/hvgdk_mini.h @@ -326,6 +326,8 @@ union hv_hypervisor_version_info { /* stimer Direct Mode is available */ #define HV_STIMER_DIRECT_MODE_AVAILABLE BIT(19) +#define HV_DEVICE_DOMAIN_AVAILABLE BIT(24) + /* * Implementation recommendations. Indicates which behaviors the hypervisor * recommends the OS implement for optimal performance. @@ -486,9 +488,15 @@ union hv_vp_assist_msr_contents { /* HV_REGISTER_VP_ASSIST_PAGE */ #define HVCALL_GET_VP_INDEX_FROM_APIC_ID 0x009a #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0 +#define HVCALL_CREATE_DEVICE_DOMAIN 0x00b1 +#define HVCALL_ATTACH_DEVICE_DOMAIN 0x00b2 +#define HVCALL_MAP_DEVICE_GPA_PAGES 0x00b3 +#define HVCALL_UNMAP_DEVICE_GPA_PAGES 0x00b4 #define HVCALL_SIGNAL_EVENT_DIRECT 0x00c0 #define HVCALL_POST_MESSAGE_DIRECT 0x00c1 #define HVCALL_DISPATCH_VP 0x00c2 +#define HVCALL_DETACH_DEVICE_DOMAIN 0x00c4 +#define HVCALL_DELETE_DEVICE_DOMAIN 0x00c5 #define HVCALL_GET_GPA_PAGES_ACCESS_STATES 0x00c9 #define HVCALL_ACQUIRE_SPARSE_SPA_PAGE_HOST_ACCESS 0x00d7 #define HVCALL_RELEASE_SPARSE_SPA_PAGE_HOST_ACCESS 0x00d8 @@ -502,6 +510,7 @@ union hv_vp_assist_msr_contents { /* HV_REGISTER_VP_ASSIST_PAGE */ #define HVCALL_MMIO_READ 0x0106 #define HVCALL_MMIO_WRITE 0x0107 #define HVCALL_DISABLE_HYP_EX 0x010f +#define HVCALL_GET_IOMMU_CAPABILITIES 0x0125 #define HVCALL_MAP_STATS_PAGE2 0x0131 /* HV_HYPERCALL_INPUT */ diff --git a/include/hyperv/hvhdk_mini.h b/include/hyperv/hvhdk_mini.h index 035ba20870f7..3dbfb338bcba 100644 --- a/include/hyperv/hvhdk_mini.h +++ b/include/hyperv/hvhdk_mini.h @@ -548,4 +548,91 @@ union hv_device_id { /* HV_DEVICE_ID */ } acpi; } __packed; +#define HV_DEVICE_DOMAIN_TYPE_S2 0 /* HV_DEVICE_DOMAIN_ID_TYPE_S2 */ +#define HV_DEVICE_DOMAIN_TYPE_S1 1 /* HV_DEVICE_DOMAIN_ID_TYPE_S1 */ + +#define HV_DEVICE_DOMAIN_ID_S2_DEFAULT 0 +#define HV_DEVICE_DOMAIN_ID_S2_NULL 0xFFFFFFFFULL + +union hv_device_domain_id { + u64 as_uint64; + struct { + u32 type : 4; + u32 reserved : 28; + u32 id; + }; +} __packed; + +struct hv_input_device_domain { /* HV_INPUT_DEVICE_DOMAIN */ + u64 partition_id; + union hv_input_vtl owner_vtl; + u8 padding[7]; + union hv_device_domain_id domain_id; +} __packed; + +union hv_create_device_domain_flags { /* HV_CREATE_DEVICE_DOMAIN_FLAGS */ + u32 as_uint32; + struct { + u32 forward_progress_required : 1; + u32 inherit_owning_vtl : 1; + u32 reserved : 30; + } __packed; +} __packed; + +struct hv_input_create_device_domain { /* HV_INPUT_CREATE_DEVICE_DOMAIN */ + struct hv_input_device_domain device_domain; + union hv_create_device_domain_flags create_device_domain_flags; +} __packed; + +struct hv_input_delete_device_domain { /* HV_INPUT_DELETE_DEVICE_DOMAIN */ + struct hv_input_device_domain device_domain; +} __packed; + +struct hv_input_attach_device_domain { /* HV_INPUT_ATTACH_DEVICE_DOMAIN */ + struct hv_input_device_domain device_domain; + union hv_device_id device_id; +} __packed; + +struct hv_input_detach_device_domain { /* HV_INPUT_DETACH_DEVICE_DOMAIN */ + u64 partition_id; + union hv_device_id device_id; +} __packed; + +/* HV_INPUT_GET_IOMMU_CAPABILITIES */ +struct hv_input_get_iommu_capabilities { + u64 partition_id; + u64 reserved; +} __packed; + +#define HV_IOMMU_CAP_PRESENT BIT_ULL(0) +#define HV_IOMMU_CAP_S2 BIT_ULL(1) +#define HV_IOMMU_CAP_S1 BIT_ULL(2) +#define HV_IOMMU_CAP_S1_5LVL BIT_ULL(3) +#define HV_IOMMU_CAP_PASID BIT_ULL(4) +#define HV_IOMMU_CAP_ATS BIT_ULL(5) +#define HV_IOMMU_CAP_PRI BIT_ULL(6) + +struct hv_output_get_iommu_capabilities { /* HV_OUTPUT_GET_IOMMU_CAPABILITIES */ + u32 size; + u16 reserved; + u8 max_iova_width; + u8 max_pasid_width; + u64 iommu_cap; /* HV_IOMMU_CAP_* above */ + u64 pgsize_bitmap; +} __packed; + +struct hv_input_map_device_gpa_pages { /* HV_INPUT_MAP_DEVICE_GPA_PAGES */ + struct hv_input_device_domain device_domain; + union hv_input_vtl target_vtl; + u8 padding[3]; + u32 map_flags; + u64 target_device_va_base; + u64 gpa_page_list[]; +} __packed; + +struct hv_input_unmap_device_gpa_pages { /* HV_INPUT_UNMAP_DEVICE_GPA_PAGES */ + struct hv_input_device_domain device_domain; + u64 target_device_va_base; +} __packed; + #endif /* _HV_HVHDK_MINI_H */ -- 2.51.2.vfs.0.1