From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) (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 25B35315794 for ; Fri, 19 Sep 2025 14:22:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.15 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758291774; cv=none; b=YlYziRs8XYML+CSUBZitmGXIoMdZWR24ZrnwLg4oalotk8Y1ZEBmIpjwVV0/Z6dUQahJKOYTYF2BgHUtpWGKVLWRPrALR4S+ywx9OhAgcxYGHz8NYjY6H70cv75JIkodolYcKBbltFBtsYEEk2ha6XfUi1ZiDqqlXL/WO6SFVTg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758291774; c=relaxed/simple; bh=4zUw67ndeXVhVWEk0qI61EPpMIM5yMbCG8feHg3bE/4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=e0/oW2PQeOzSnw3vZ7x5aH6iL2+wcC5L0fPWhDpMAMzdvAvwmgdN+R4IA4RQjHN3qNlZXTCVOL5fRTBKEax9iDLbWmutSBXxDI5e074eW/dQN6hktvMlnMNvQ7wyvmM8ks2Oaen9rCwgjNuQvPdKrENh8M9LVAu0Wvf/ErzN3Pw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=aV0w5Uay; arc=none smtp.client-ip=192.198.163.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="aV0w5Uay" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1758291773; x=1789827773; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=4zUw67ndeXVhVWEk0qI61EPpMIM5yMbCG8feHg3bE/4=; b=aV0w5UayMIzATDdV15wZDw5Kr/kEHdpwStB/AdjdDG2KnGatrTZr0Z0q DwOsbftYSt8D2NuoZBMYrsoiT8ZumkSOQQHizn0Qx3XM+qnz88YStVZhf EesiZCWl3J5OQiKSWFp+wTEieFFYHpI+4/TWYFxF+ZJ5TY9JhiARfgpwC 5SqysjcyjmuSbZcnkbYUx6G5lL8I+jmwVzJiI1efqHk93czAjNPz7F1Tu XHw+n+ei4l9I2c6hTesbGZUQHNX3I1fD5Eyx3xccjxe4+/IDihG7GjhZS /A0yGrJysziN8X8nR1fa27M5QWArRudh98Q4cK7Mwm5Pb1/rIUCeIZzcq g==; X-CSE-ConnectionGUID: nf3Bxc8uSk29P2u93kaRYw== X-CSE-MsgGUID: g6XDGCw7SciWWQRKamUduQ== X-IronPort-AV: E=McAfee;i="6800,10657,11557"; a="60750584" X-IronPort-AV: E=Sophos;i="6.18,278,1751266800"; d="scan'208";a="60750584" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Sep 2025 07:22:41 -0700 X-CSE-ConnectionGUID: LabCWNiIRjqRa/+WWathLw== X-CSE-MsgGUID: Dr7OtJlASAC48bo5zMtrWQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,278,1751266800"; d="scan'208";a="176655071" Received: from dwillia2-desk.jf.intel.com ([10.88.27.145]) by fmviesa010.fm.intel.com with ESMTP; 19 Sep 2025 07:22:41 -0700 From: Dan Williams To: linux-coco@lists.linux.dev, linux-pci@vger.kernel.org Cc: xin@zytor.com, chao.gao@intel.com, Xu Yilun Subject: [RFC PATCH 26/27] x86/virt/tdx: Add SEAMCALL wrappers for IDE stream management Date: Fri, 19 Sep 2025 07:22:35 -0700 Message-ID: <20250919142237.418648-27-dan.j.williams@intel.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250919142237.418648-1-dan.j.williams@intel.com> References: <20250919142237.418648-1-dan.j.williams@intel.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Xu Yilun 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.c | 91 +++++++++++++++++++++++++++++++++++++ arch/x86/virt/vmx/tdx/tdx.h | 4 ++ 3 files changed, 109 insertions(+) diff --git a/arch/x86/include/asm/tdx.h b/arch/x86/include/asm/tdx.h index 97e0d7a1f38d..a10e6a08874c 100644 --- a/arch/x86/include/asm/tdx.h +++ b/arch/x86/include/asm/tdx.h @@ -236,6 +236,20 @@ u64 tdh_spdm_disconnect(u64 spdm_id, struct page *spdm_rsp, u64 tdh_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(void) { return -ENODEV; } diff --git a/arch/x86/virt/vmx/tdx/tdx.c b/arch/x86/virt/vmx/tdx/tdx.c index 86dd855d7361..179c976eab01 100644 --- a/arch/x86/virt/vmx/tdx/tdx.c +++ b/arch/x86/virt/vmx/tdx/tdx.c @@ -2523,3 +2523,94 @@ u64 tdh_spdm_mng(u64 spdm_id, u64 spdm_op, struct page *spdm_param, return r; } EXPORT_SYMBOL_GPL(tdh_spdm_mng); + +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_GPL(tdh_ide_stream_create); + +u64 tdh_ide_stream_block(u64 spdm_id, u64 stream_id) +{ + struct tdx_module_args args = { + .rcx = spdm_id, + .rdx = stream_id, + }; + u64 r; + + r = seamcall(TDH_IDE_STREAM_BLOCK, &args); + + return r; +} +EXPORT_SYMBOL_GPL(tdh_ide_stream_block); + +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), + }; + union hpa_array_t released; + u64 r; + + r = seamcall_ret(TDH_IDE_STREAM_DELETE, &args); + if (r < 0) + return r; + + released.raw = args.rcx; + *nr_released = released.array_size + 1; + *released_hpa = released.pfn << PAGE_SHIFT; + + return r; +} +EXPORT_SYMBOL_GPL(tdh_ide_stream_delete); + +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(TDH_IDE_STREAM_KM, &args); + + *spdm_req_len = args.rcx; + + return r; +} +EXPORT_SYMBOL_GPL(tdh_ide_stream_km); diff --git a/arch/x86/virt/vmx/tdx/tdx.h b/arch/x86/virt/vmx/tdx/tdx.h index eb67fd9d1f55..3f73926aebec 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 -- 2.51.0