From nobody Thu Apr 2 17:09:12 2026 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.14]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9FD38407119; Fri, 27 Mar 2026 16:24:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.14 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774628661; cv=none; b=WUP85A4T86XMcOpcqPQXGY1WKsdpj/tF+s97+0DUbk8z5tQ+XjVCtc+PfgrFOJfgCiJM9bEk5Ze3Vzbt/h/dWZobyuEbMexWw0a72cfrWn4JyJ68YkHjnD5OtqqlpBbLIQg6z27t9HF29fD9UJmpBG/mMX1ERfKgpuZ8rLpRBG8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774628661; c=relaxed/simple; bh=nSxKB/mCLDrbbeTMk6Of7USqSp6UAUKOXUxNYtSimUQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=pFiIsFFy9XujFqePIS6S3KRIGzxj9MQtOTfzc0YXmgYkaDKOpooWHOF42H7aeAC1RBObfGhvYV95oHiO4Uq5hwto+HxXpJM9LhVVEv3sFXlnqcYpJd/UFLC06SxqEHyB2mhaxFQW8uN2qKqjUthwFLaG7Vk9BTJBOtbe1ZaC5Wc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=hX20DsvX; arc=none smtp.client-ip=198.175.65.14 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="hX20DsvX" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1774628660; x=1806164660; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=nSxKB/mCLDrbbeTMk6Of7USqSp6UAUKOXUxNYtSimUQ=; b=hX20DsvXtg2K6hBpLW1DXk70+tsRyVtYqQ9iiXY3YiJpGuAfyoWDSbiW I1FLXp0S3kBX/p1BnxwQBXufMb0ZKw3aTNQqhKEAFPXO6Vm977+jDeiak KLAgC2cwxaxVPJqweC7rgyHXiCNBhetUc9Sqwf9PGwjMRa6eDLhGaF8cp yVGaV88wgsatkUhxMrUK8g+e3SnqwV8otVy1aZCNpivfHxGlEU+bnjmcD 0mVarUilpLycDWWn+Z++9Zi8toMah9jlinQwwVgM5tNmh9NfxUkqOPdPt YZINLC2S9sIhu1mWrNRioPr8LmQhfOiT+vNIPAyJWhyBL+YB8GZZViyYI w==; X-CSE-ConnectionGUID: v9rN96s/QpSSZ28j8HXjqA== X-CSE-MsgGUID: 7ZwL2awETuWGPJVtDOge0A== X-IronPort-AV: E=McAfee;i="6800,10657,11741"; a="79565694" X-IronPort-AV: E=Sophos;i="6.23,144,1770624000"; d="scan'208";a="79565694" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Mar 2026 09:24:20 -0700 X-CSE-ConnectionGUID: OhsKLpSLSxWe+zwCDUuyEw== X-CSE-MsgGUID: NioMDJNJR9Gj9xcXUa9o/A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,144,1770624000"; d="scan'208";a="220516389" Received: from yilunxu-optiplex-7050.sh.intel.com ([10.239.159.165]) by fmviesa006.fm.intel.com with ESMTP; 27 Mar 2026 09:24:17 -0700 From: Xu Yilun To: linux-coco@lists.linux.dev, linux-pci@vger.kernel.org, dan.j.williams@intel.com, x86@kernel.org Cc: chao.gao@intel.com, dave.jiang@intel.com, baolu.lu@linux.intel.com, yilun.xu@linux.intel.com, yilun.xu@intel.com, zhenzhong.duan@intel.com, kvm@vger.kernel.org, rick.p.edgecombe@intel.com, dave.hansen@linux.intel.com, kas@kernel.org, xiaoyao.li@intel.com, vishal.l.verma@intel.com, linux-kernel@vger.kernel.org Subject: [PATCH v2 29/31] x86/virt/tdx: Add SEAMCALL wrappers for IDE stream management Date: Sat, 28 Mar 2026 00:01:30 +0800 Message-Id: <20260327160132.2946114-30-yilun.xu@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20260327160132.2946114-1-yilun.xu@linux.intel.com> References: <20260327160132.2946114-1-yilun.xu@linux.intel.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" Add several SEAMCALL wrappers for IDE stream management. - TDH.IDE.STREAM.CREATE creates IDE stream metadata buffers for TDX Module, and does root port side IDE configuration. - TDH.IDE.STREAM.BLOCK clears the root port side IDE configuration. - TDH.IDE.STREAM.DELETE releases the IDE stream metadata buffers. - TDH.IDE.STREAM.KM deals with the IDE Key Management protocol (IDE-KM) More information see Intel TDX Connect ABI Specification [1] Section 3.2 TDX Connect Host-Side (SEAMCALL) Interface Functions. [1]: https://cdrdv2.intel.com/v1/dl/getContent/858625 Signed-off-by: Xu Yilun --- arch/x86/include/asm/tdx.h | 14 ++++++ arch/x86/virt/vmx/tdx/tdx.h | 4 ++ arch/x86/virt/vmx/tdx/tdx.c | 86 +++++++++++++++++++++++++++++++++++++ 3 files changed, 104 insertions(+) diff --git a/arch/x86/include/asm/tdx.h b/arch/x86/include/asm/tdx.h index 8abdad084972..7bdd66acda5b 100644 --- a/arch/x86/include/asm/tdx.h +++ b/arch/x86/include/asm/tdx.h @@ -260,6 +260,20 @@ u64 tdh_exec_spdm_mng(u64 spdm_id, u64 spdm_op, struct= page *spdm_param, struct page *spdm_rsp, struct page *spdm_req, struct tdx_page_array *spdm_out, u64 *spdm_req_or_out_len); +u64 tdh_ide_stream_create(u64 stream_info, u64 spdm_id, + struct tdx_page_array *stream_mt, u64 stream_ctrl, + u64 rid_assoc1, u64 rid_assoc2, + u64 addr_assoc1, u64 addr_assoc2, + u64 addr_assoc3, + u64 *stream_id, + u64 *rp_ide_id); +u64 tdh_ide_stream_block(u64 spdm_id, u64 stream_id); +u64 tdh_ide_stream_delete(u64 spdm_id, u64 stream_id, + struct tdx_page_array *stream_mt, + unsigned int *nr_released, u64 *released_hpa); +u64 tdh_ide_stream_km(u64 spdm_id, u64 stream_id, u64 operation, + struct page *spdm_rsp, struct page *spdm_req, + u64 *spdm_req_len); #else static inline void tdx_init(void) { } static inline int tdx_cpu_enable(void) { return -ENODEV; } diff --git a/arch/x86/virt/vmx/tdx/tdx.h b/arch/x86/virt/vmx/tdx/tdx.h index 4784db2d1d92..d0a9694432de 100644 --- a/arch/x86/virt/vmx/tdx/tdx.h +++ b/arch/x86/virt/vmx/tdx/tdx.h @@ -66,6 +66,10 @@ #define TDH_IOMMU_CLEAR 129 #define TDH_SPDM_CREATE 130 #define TDH_SPDM_DELETE 131 +#define TDH_IDE_STREAM_CREATE 132 +#define TDH_IDE_STREAM_BLOCK 133 +#define TDH_IDE_STREAM_DELETE 134 +#define TDH_IDE_STREAM_KM 135 #define TDH_SPDM_CONNECT 142 #define TDH_SPDM_DISCONNECT 143 #define TDH_SPDM_MNG 144 diff --git a/arch/x86/virt/vmx/tdx/tdx.c b/arch/x86/virt/vmx/tdx/tdx.c index 02882c2ad177..72d836b25bd6 100644 --- a/arch/x86/virt/vmx/tdx/tdx.c +++ b/arch/x86/virt/vmx/tdx/tdx.c @@ -2616,3 +2616,89 @@ u64 tdh_exec_spdm_mng(u64 spdm_id, u64 spdm_op, stru= ct page *spdm_param, return r; } EXPORT_SYMBOL_FOR_MODULES(tdh_exec_spdm_mng, "tdx-host"); + +u64 tdh_ide_stream_create(u64 stream_info, u64 spdm_id, + struct tdx_page_array *stream_mt, u64 stream_ctrl, + u64 rid_assoc1, u64 rid_assoc2, + u64 addr_assoc1, u64 addr_assoc2, + u64 addr_assoc3, + u64 *stream_id, + u64 *rp_ide_id) +{ + struct tdx_module_args args =3D { + .rcx =3D stream_info, + .rdx =3D spdm_id, + .r8 =3D hpa_array_t_assign_raw(stream_mt), + .r9 =3D stream_ctrl, + .r10 =3D rid_assoc1, + .r11 =3D rid_assoc2, + .r12 =3D addr_assoc1, + .r13 =3D addr_assoc2, + .r14 =3D addr_assoc3, + }; + u64 r; + + tdx_clflush_page_array(stream_mt); + + r =3D seamcall_saved_ret(TDH_IDE_STREAM_CREATE, &args); + + *stream_id =3D args.rcx; + *rp_ide_id =3D args.rdx; + + return r; +} +EXPORT_SYMBOL_FOR_MODULES(tdh_ide_stream_create, "tdx-host"); + +u64 tdh_ide_stream_block(u64 spdm_id, u64 stream_id) +{ + struct tdx_module_args args =3D { + .rcx =3D spdm_id, + .rdx =3D stream_id, + }; + + return seamcall(TDH_IDE_STREAM_BLOCK, &args); +} +EXPORT_SYMBOL_FOR_MODULES(tdh_ide_stream_block, "tdx-host"); + +u64 tdh_ide_stream_delete(u64 spdm_id, u64 stream_id, + struct tdx_page_array *stream_mt, + unsigned int *nr_released, u64 *released_hpa) +{ + struct tdx_module_args args =3D { + .rcx =3D spdm_id, + .rdx =3D stream_id, + .r8 =3D hpa_array_t_release_raw(stream_mt), + }; + u64 r; + + r =3D seamcall_ret(TDH_IDE_STREAM_DELETE, &args); + if (r !=3D TDX_SUCCESS) + return r; + + *nr_released =3D FIELD_GET(HPA_ARRAY_T_SIZE, args.rcx) + 1; + *released_hpa =3D FIELD_GET(HPA_ARRAY_T_PFN, args.rcx) << PAGE_SHIFT; + + return r; +} +EXPORT_SYMBOL_FOR_MODULES(tdh_ide_stream_delete, "tdx-host"); + +u64 tdh_ide_stream_km(u64 spdm_id, u64 stream_id, u64 operation, + struct page *spdm_rsp, struct page *spdm_req, + u64 *spdm_req_len) +{ + struct tdx_module_args args =3D { + .rcx =3D spdm_id, + .rdx =3D stream_id, + .r8 =3D operation, + .r9 =3D page_to_phys(spdm_rsp), + .r10 =3D page_to_phys(spdm_req), + }; + u64 r; + + r =3D seamcall_ret_ir_resched(TDH_IDE_STREAM_KM, &args); + + *spdm_req_len =3D args.rcx; + + return r; +} +EXPORT_SYMBOL_FOR_MODULES(tdh_ide_stream_km, "tdx-host"); --=20 2.25.1