From nobody Sun Feb 8 11:26:13 2026 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 7E4D839341D; Tue, 20 Jan 2026 06:43:46 +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=1768891438; cv=none; b=adQswXj9kzj4Gy1x1SEKuSyN0peDP2W/Im6OkVO73pUq5vkbJGVUDR4OQr+1m8Y4I8WcaPkdySqr11zT5Kd1eVM9b/dDJp7xMweaUe2u8YPV1KKCVzH99ns098/CZMzTdWWQtlMTu0L4GM7lS1Nv3ZUlQPN8vyaXqGyYrK71dMc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768891438; c=relaxed/simple; bh=t6KWa8Ywuv55mBlGRMItarSrgfml7ndi5kM3By2DgKQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Qeb5VKEkWUEbbSg0FuE4UAEFZO1eTMqLyDLq13l+8eRF2WRFzBENzLswOjPO3+KN1BA6yYvPJ/L0XdKvCx8ted9CsJRPGLqv+N3DhBLla1oC32tOetphc4NbXTBLypy1vItU6VvFM5p2aOeGUp9xvY+poucQxGrEOUZ5byDctSk= 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=mdo0t083; 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="mdo0t083" 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 9907E20B7172; Mon, 19 Jan 2026 22:43:37 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 9907E20B7172 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1768891418; bh=wqmyheb8rD2njJBWwC6GothbZYR9ohwQrRX05s9s+ww=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mdo0t0832V1O+P0nkREY95p7rRr4BZA+JyroNqivGh/7D1MngHH8XQJkpu98A9Foh sOdWA6RVvsvFJst/F2Qz5wNtwXWijEPiDguG0XLtCIE+iAJVeRyD8L9S35pRYClIAm ZSYLlmlmQgZZ6k9YxVuH6tdQjnmLOKCDy/BVySGU= From: Mukesh R To: linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, linux-pci@vger.kernel.org, linux-arch@vger.kernel.org Cc: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, longli@microsoft.com, catalin.marinas@arm.com, will@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, joro@8bytes.org, lpieralisi@kernel.org, kwilczynski@kernel.org, mani@kernel.org, robh@kernel.org, bhelgaas@google.com, arnd@arndb.de, nunodasneves@linux.microsoft.com, mhklinux@outlook.com, romank@linux.microsoft.com Subject: [PATCH v0 09/15] mshv: Import data structs around device domains and irq remapping Date: Mon, 19 Jan 2026 22:42:24 -0800 Message-ID: <20260120064230.3602565-10-mrathor@linux.microsoft.com> X-Mailer: git-send-email 2.51.2.vfs.0.1 In-Reply-To: <20260120064230.3602565-1-mrathor@linux.microsoft.com> References: <20260120064230.3602565-1-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: quoted-printable Content-Type: text/plain; charset="utf-8" From: Mukesh Rathor Import/copy from Hyper-V public headers, definitions and declarations that are related to attaching and detaching of device domains and interrupt remapping, and building device ids for those purposes. Signed-off-by: Mukesh Rathor --- include/hyperv/hvgdk_mini.h | 11 ++++ include/hyperv/hvhdk_mini.h | 112 ++++++++++++++++++++++++++++++++++++ 2 files changed, 123 insertions(+) diff --git a/include/hyperv/hvgdk_mini.h b/include/hyperv/hvgdk_mini.h index 04b18d0e37af..bda9fae5b1ef 100644 --- a/include/hyperv/hvgdk_mini.h +++ b/include/hyperv/hvgdk_mini.h @@ -323,6 +323,9 @@ union hv_hypervisor_version_info { /* stimer Direct Mode is available */ #define HV_STIMER_DIRECT_MODE_AVAILABLE BIT(19) =20 +#define HV_DEVICE_DOMAIN_AVAILABLE BIT(24) +#define HV_S1_DEVICE_DOMAIN_AVAILABLE BIT(25) + /* * Implementation recommendations. Indicates which behaviors the hypervisor * recommends the OS implement for optimal performance. @@ -471,6 +474,8 @@ union hv_vp_assist_msr_contents { /* HV_REGISTER_VP_AS= SIST_PAGE */ #define HVCALL_MAP_DEVICE_INTERRUPT 0x007c #define HVCALL_UNMAP_DEVICE_INTERRUPT 0x007d #define HVCALL_RETARGET_INTERRUPT 0x007e +#define HVCALL_ATTACH_DEVICE 0x0082 +#define HVCALL_DETACH_DEVICE 0x0083 #define HVCALL_NOTIFY_PARTITION_EVENT 0x0087 #define HVCALL_ENTER_SLEEP_STATE 0x0084 #define HVCALL_NOTIFY_PORT_RING_EMPTY 0x008b @@ -482,9 +487,15 @@ union hv_vp_assist_msr_contents { /* HV_REGISTER_VP_A= SSIST_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 diff --git a/include/hyperv/hvhdk_mini.h b/include/hyperv/hvhdk_mini.h index 41a29bf8ec14..57821d6ddb61 100644 --- a/include/hyperv/hvhdk_mini.h +++ b/include/hyperv/hvhdk_mini.h @@ -449,6 +449,32 @@ struct hv_send_ipi_ex { /* HV_INPUT_SEND_SYNTHETIC_CLU= STER_IPI_EX */ struct hv_vpset vp_set; } __packed; =20 +union hv_attdev_flags { /* HV_ATTACH_DEVICE_FLAGS */ + struct { + u32 logical_id : 1; + u32 resvd0 : 1; + u32 ats_enabled : 1; + u32 virt_func : 1; + u32 shared_irq_child : 1; + u32 virt_dev : 1; + u32 ats_supported : 1; + u32 small_irt : 1; + u32 resvd : 24; + } __packed; + u32 as_uint32; +}; + +union hv_dev_pci_caps { /* HV_DEVICE_PCI_CAPABILITIES */ + struct { + u32 max_pasid_width : 5; + u32 invalidate_qdepth : 5; + u32 global_inval : 1; + u32 prg_response_req : 1; + u32 resvd : 20; + } __packed; + u32 as_uint32; +}; + typedef u16 hv_pci_rid; /* HV_PCI_RID */ typedef u16 hv_pci_segment; /* HV_PCI_SEGMENT */ typedef u64 hv_logical_device_id; @@ -528,4 +554,90 @@ union hv_device_id { /* HV_DEVICE_ID */ } acpi; } __packed; =20 +struct hv_input_attach_device { /* HV_INPUT_ATTACH_DEVICE */ + u64 partition_id; + union hv_device_id device_id; + union hv_attdev_flags attdev_flags; + u8 attdev_vtl; + u8 rsvd0; + u16 rsvd1; + u64 logical_devid; + union hv_dev_pci_caps dev_pcicaps; + u16 pf_pci_rid; + u16 resvd2; +} __packed; + +struct hv_input_detach_device { /* HV_INPUT_DETACH_DEVICE */ + u64 partition_id; + u64 logical_devid; +} __packed; + + +/* 3 domain types: stage 1, stage 2, and SOC */ +#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_TYPE_SOC 2 /* HV_DEVICE_DOMAIN_ID_TYPE_SOC */ + +/* ID for stage 2 default domain and NULL domain */ +#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; + +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_PAG= ES */ + struct hv_input_device_domain device_domain; + u64 target_device_va_base; +} __packed; + #endif /* _HV_HVHDK_MINI_H */ --=20 2.51.2.vfs.0.1