From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (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 ED70B257821 for ; Mon, 17 Nov 2025 02:39:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.10 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763347164; cv=none; b=ttYwIYT97Vq+Esgc2Dk9rb1MRwedp9S/MPaTpfi5rWkH4L8zy3BWHSwlrixJN6fKGIJy7l52AnlBbzLaEcQJpL9NYm++y9S7+9yzQp0dcuSuQi1lOQJbLofWXy3y8Cmqv6P0DvXGwM8KRhfMrHgOC79NMIKGtI39XMqNvZ6cJQQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763347164; c=relaxed/simple; bh=Rokj9QBjCrAbn7WlwriKlW2AO3ckO6Lrq1xzwekP0Xs=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=fqvwj/uoDbnUVTpguvNtuW4o38bj4F+b2QCjlI2mP2AofmUBvTRmu/D4z0GIjUsOBAZyOPMcUqMWc0GVvBGXcdNC5lFtDFas4oify9dMJIsra5LkG6CowcJriM+Nozy+VyBRPCsI9t0N+enr5/Mw8lFTZbvikuCuLl1qHRQDmhY= 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=bkutgJNu; arc=none smtp.client-ip=198.175.65.10 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="bkutgJNu" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1763347162; x=1794883162; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Rokj9QBjCrAbn7WlwriKlW2AO3ckO6Lrq1xzwekP0Xs=; b=bkutgJNutyQnYQv4XtTaE8MQLEueq+1Iw/g5nV6BXOMBleaqaTKLd3G/ JOf/Ekfc2ad2zHdpHuuvN2B0Bp/1hhNLlezMqDvOzZyxQGaSOlDSed/C9 wbPeJHC9MHGZDp9JWvQ36lS6OQPVsdjAhccIB8OvnhsvhsT6c47r1r7jI sZg79PsU3zBxRovaFJXWlUzYARrH7/6oldE/DxMa8xJr/eDZF2S7tBs6r 2GWsgPPAgQ5CFwiuxNd7WbsZ/0nSuSglUoJQ43r4s7/r03MDSDQjwAZ73 /mNqrahhdz5C96H6MVDZ+vaKI/B558a85P0eYLGZ3kzwfc8ir5qK3KqO/ Q==; X-CSE-ConnectionGUID: 23OAYRViSdSPydnzIR7PAA== X-CSE-MsgGUID: J9sO/sRlSyOmdOtLCx9vng== X-IronPort-AV: E=McAfee;i="6800,10657,11615"; a="82729631" X-IronPort-AV: E=Sophos;i="6.19,310,1754982000"; d="scan'208";a="82729631" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Nov 2025 18:39:22 -0800 X-CSE-ConnectionGUID: jm0zuMRFRMa0RVeIguXTqQ== X-CSE-MsgGUID: aImnIFsASxaQE9YiwbU25w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,310,1754982000"; d="scan'208";a="227658519" Received: from yilunxu-optiplex-7050.sh.intel.com ([10.239.159.165]) by orviesa001.jf.intel.com with ESMTP; 16 Nov 2025 18:39:18 -0800 From: Xu Yilun To: linux-coco@lists.linux.dev, linux-pci@vger.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, dan.j.williams@intel.com, kas@kernel.org, x86@kernel.org Subject: [PATCH v1 24/26] x86/virt/tdx: Add SEAMCALL wrappers for IDE stream management Date: Mon, 17 Nov 2025 10:23:08 +0800 Message-Id: <20251117022311.2443900-25-yilun.xu@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20251117022311.2443900-1-yilun.xu@linux.intel.com> References: <20251117022311.2443900-1-yilun.xu@linux.intel.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Dan Williams --- 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 8e6da080f4e2..b5ad3818f222 100644 --- a/arch/x86/include/asm/tdx.h +++ b/arch/x86/include/asm/tdx.h @@ -240,6 +240,20 @@ 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_enable_ext(void) { return -ENODEV; } diff --git a/arch/x86/virt/vmx/tdx/tdx.h b/arch/x86/virt/vmx/tdx/tdx.h index f68b9d3abfe1..9097cabce343 100644 --- a/arch/x86/virt/vmx/tdx/tdx.h +++ b/arch/x86/virt/vmx/tdx/tdx.h @@ -52,6 +52,10 @@ #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 a0ba4d13e340..fd622445d3d6 100644 --- a/arch/x86/virt/vmx/tdx/tdx.c +++ b/arch/x86/virt/vmx/tdx/tdx.c @@ -2535,3 +2535,89 @@ u64 tdh_exec_spdm_mng(u64 spdm_id, u64 spdm_op, struct 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 = { + .rcx = stream_info, + .rdx = spdm_id, + .r8 = hpa_array_t_assign_raw(stream_mt), + .r9 = stream_ctrl, + .r10 = rid_assoc1, + .r11 = rid_assoc2, + .r12 = addr_assoc1, + .r13 = addr_assoc2, + .r14 = addr_assoc3, + }; + u64 r; + + tdx_clflush_page_array(stream_mt); + + r = seamcall_saved_ret(TDH_IDE_STREAM_CREATE, &args); + + *stream_id = args.rcx; + *rp_ide_id = 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 = { + .rcx = spdm_id, + .rdx = 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 = { + .rcx = spdm_id, + .rdx = stream_id, + .r8 = hpa_array_t_release_raw(stream_mt), + }; + u64 r; + + r = seamcall_ret(TDH_IDE_STREAM_DELETE, &args); + if (r < 0) + return r; + + *nr_released = FIELD_GET(HPA_ARRAY_T_SIZE, args.rcx) + 1; + *released_hpa = 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 = { + .rcx = spdm_id, + .rdx = stream_id, + .r8 = operation, + .r9 = page_to_phys(spdm_rsp), + .r10 = page_to_phys(spdm_req), + }; + u64 r; + + r = seamcall_ret_ir_resched(TDH_IDE_STREAM_KM, &args); + + *spdm_req_len = args.rcx; + + return r; +} +EXPORT_SYMBOL_FOR_MODULES(tdh_ide_stream_km, "tdx-host"); -- 2.25.1