From patchwork Tue Jan 10 00:30:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Matthew Gerlach X-Patchwork-Id: 41237 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:4e01:0:0:0:0:0 with SMTP id p1csp2461012wrt; Mon, 9 Jan 2023 16:31:07 -0800 (PST) X-Google-Smtp-Source: AMrXdXuYZAYBQ4no9pIdurzNp5ERHA4/adAwBiJJhvDWlntNpe5kPdZzkpaUSfPKql3qZzwyoRhY X-Received: by 2002:aa7:8a45:0:b0:586:ad46:ed6c with SMTP id n5-20020aa78a45000000b00586ad46ed6cmr8762032pfa.22.1673310667078; Mon, 09 Jan 2023 16:31:07 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1673310667; cv=none; d=google.com; s=arc-20160816; b=lGkQysPTbE90hi/91ADWq0xJle1u0sD5C3YjbVh0Q0NhSdx/M+JP4MfYSqm0Ktw/pN 1gA9U49llWZgixrJoJtgXqoFb4kx07Zukk+mt2Inn68xfGQko/VhqyAQZushBgbtEruZ yfnCsTyde4ZYTa3yXkaEAVHgX+AUm+u9ekvdmJqmayWuCtMJzpti3PRg9cawf6KwAfbT pfG34+MBitwgXbbdAEteI3Wp4/MQqOcDBJrMtTBn3BPdsKuCaSe+74kFIgjDHHUImEXm dFGTBzSFR3WAehn+btfOeK41Rctpm+/95w46TFJaaRjCeRZPjjtjf4r2qNo6wIG9w2oI xMOw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=Vl4B3aMFIdj2m7Jd/IVn34OGNoAZ/mpUQYu2s2j2bLM=; b=gWEhKkqb5GsOKf5+FKS4L6WmZ+5eWTuuvX9lIUq0yOxKpVNJp6R6UgZujBqVB+QoS1 MbzyWuv2/wdbie8iIvR5PX166GOmuyj+3w4eoUr4GNbbisr4Nzdw0yA5ru4MyAdGuIkG K+cCeTSyO9bKbASPkuXbjRtyWKRDLMafWNCHKHodQta6van3nC+Y3sZiBTycDrgiM2u/ KLAR0NzUNDOh/Qzprm5c5uTRbVw5glBMX5jXV+0ucQjNsZmtMGink1kdj9yAPlkvXLGW O7Ubx98Z1Qj6iWfzGFoi+M8M2s1P8YwA48hj0AglMG8i3K2AqPcQs4VPNHWqk/tZgYen q/pg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=XpxmB1FW; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id u13-20020a056a00124d00b00574b1311362si841023pfi.104.2023.01.09.16.30.54; Mon, 09 Jan 2023 16:31:07 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=XpxmB1FW; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235332AbjAJAaD (ORCPT + 99 others); Mon, 9 Jan 2023 19:30:03 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59864 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235767AbjAJA35 (ORCPT ); Mon, 9 Jan 2023 19:29:57 -0500 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E81F03E0E6; Mon, 9 Jan 2023 16:29:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1673310596; x=1704846596; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=NObn6stZidq+7SmPoutFtJ/EZSc2Sfj2qbCIi9/idig=; b=XpxmB1FWubz11FE9wKTi2Snuix9IuvFZwENu1XlwIaK4ggj1qfdS2DMo N1smhxXdtZHAItbmamr6RN6PFI0JVrl2gKbFJaRetnDNUWsQRuIQC3wx+ KrsQJqhtG7xzni6njqh//xSX1UCQeWpjsI245XWYlfjKdApDVb7eFqsmc Lmvj1Xn8h1pWdjLbb/Q+DZTSKJo9QY0zhpDlHix6YJICV74Sp3NPtArmG p+sKCkH8ipN9XO9jX9fQNzYkcCMSk9vqpZsjKBK5n1q6QUqjdB8WMUoLR 09eGoIbJU0tAh7iLkitnf5i/3ecM0SqA5G0Ecb9ULyvpSIVHdmIovNOq4 A==; X-IronPort-AV: E=McAfee;i="6500,9779,10585"; a="324265537" X-IronPort-AV: E=Sophos;i="5.96,313,1665471600"; d="scan'208";a="324265537" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jan 2023 16:29:53 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10585"; a="687381575" X-IronPort-AV: E=Sophos;i="5.96,313,1665471600"; d="scan'208";a="687381575" Received: from rhweight-wrk1.ra.intel.com ([137.102.106.43]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jan 2023 16:29:53 -0800 From: matthew.gerlach@linux.intel.com To: hao.wu@intel.com, yilun.xu@intel.com, russell.h.weight@intel.com, basheer.ahmed.muddebihal@intel.com, trix@redhat.com, mdf@kernel.org, linux-fpga@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, tianfei.zhang@intel.com, corbet@lwn.net, gregkh@linuxfoundation.org, linux-serial@vger.kernel.org, jirislaby@kernel.org, geert+renesas@glider.be, andriy.shevchenko@linux.intel.com, niklas.soderlund+renesas@ragnatech.se, macro@orcam.me.uk, johan@kernel.org, lukas@wunner.de, ilpo.jarvinen@linux.intel.com, marpagan@redhat.com, bagasdotme@gmail.com Cc: Matthew Gerlach Subject: [PATCH v10 1/4] Documentation: fpga: dfl: Add documentation for DFHv1 Date: Mon, 9 Jan 2023 16:30:26 -0800 Message-Id: <20230110003029.806022-2-matthew.gerlach@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230110003029.806022-1-matthew.gerlach@linux.intel.com> References: <20230110003029.806022-1-matthew.gerlach@linux.intel.com> MIME-Version: 1.0 X-Spam-Status: No, score=-4.3 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1754593406235802513?= X-GMAIL-MSGID: =?utf-8?q?1754593406235802513?= From: Matthew Gerlach Add documentation describing the extensions provided by Version 1 of the Device Feature Header (DFHv1). Signed-off-by: Matthew Gerlach Reviewed-by: Ilpo Järvinen Reviewed-by: Tom Rix --- v10: ad Rb Tom Rix v9: move DFH definitions to after the Overview fix name of feature revision field clarify next field in DFH v8: fix section titles v7: shorten long lines and wording suggestions by bagasdotme@gmail.com v6: no change v5: use nested list for field descriptions clean up prose add reviewed-by and comments from Ilpo Järvinen v4: Remove marketing speak and separate v0 and v1 descriptions. Fix errors reported by "make htmldocs". v3: no change v2: s/GUILD/GUID/ add picture --- Documentation/fpga/dfl.rst | 117 +++++++++++++++++++++++++++++++++++++ 1 file changed, 117 insertions(+) diff --git a/Documentation/fpga/dfl.rst b/Documentation/fpga/dfl.rst index 15b670926084..7e015249785b 100644 --- a/Documentation/fpga/dfl.rst +++ b/Documentation/fpga/dfl.rst @@ -75,6 +75,123 @@ convenient for software to locate each feature by walking through this list, and can be implemented in register regions of any FPGA device. +Device Feature Header - Version 0 +================================= +Version 0 (DFHv0) is the original version of the Device Feature Header. +The format of DFHv0 is shown below:: + + +-----------------------------------------------------------------------+ + |63 Type 60|59 DFH VER 52|51 Rsvd 41|40 EOL|39 Next 16|15 REV 12|11 ID 0| 0x00 + +-----------------------------------------------------------------------+ + |63 GUID_L 0| 0x08 + +-----------------------------------------------------------------------+ + |63 GUID_H 0| 0x10 + +-----------------------------------------------------------------------+ + +- Offset 0x00 + + * Type - The type of DFH (e.g. FME, AFU, or private feature). + * DFH VER - The version of the DFH. + * Rsvd - Currently unused. + * EOL - Set if the DFH is the end of the Device Feature List (DFL). + * Next - The offset in bytes of the next DFH in the DFL from the DFH start, + and the start of a DFH must be aligned to an 8 byte boundary. + If EOL is set, Next is the size of MMIO of the last feature in the list. + * REV - The revision of the feature associated with this header. + * ID - The feature ID if Type is private feature. + +- Offset 0x08 + + * GUID_L - Least significant 64 bits of a 128-bit Globally Unique Identifier + (present only if Type is FME or AFU). + +- Offset 0x10 + + * GUID_H - Most significant 64 bits of a 128-bit Globally Unique Identifier + (present only if Type is FME or AFU). + + +Device Feature Header - Version 1 +================================= +Version 1 (DFHv1) of the Device Feature Header adds the following functionality: + +* Provides a standardized mechanism for features to describe + parameters/capabilities to software. +* Standardize the use of a GUID for all DFHv1 types. +* Decouples the DFH location from the register space of the feature itself. + +The format of Version 1 of the Device Feature Header (DFH) is shown below:: + + +-----------------------------------------------------------------------+ + |63 Type 60|59 DFH VER 52|51 Rsvd 41|40 EOL|39 Next 16|15 REV 12|11 ID 0| 0x00 + +-----------------------------------------------------------------------+ + |63 GUID_L 0| 0x08 + +-----------------------------------------------------------------------+ + |63 GUID_H 0| 0x10 + +-----------------------------------------------------------------------+ + |63 Reg Address/Offset 1| Rel 0| 0x18 + +-----------------------------------------------------------------------+ + |63 Reg Size 32|Params 31|30 Group 16|15 Instance 0| 0x20 + +-----------------------------------------------------------------------+ + |63 Next 35|34RSV33|EOP32|31 Param Version 16|15 Param ID 0| 0x28 + +-----------------------------------------------------------------------+ + |63 Parameter Data 0| 0x30 + +-----------------------------------------------------------------------+ + + ... + + +-----------------------------------------------------------------------+ + |63 Next 35|34RSV33|EOP32|31 Param Version 16|15 Param ID 0| + +-----------------------------------------------------------------------+ + |63 Parameter Data 0| + +-----------------------------------------------------------------------+ + +- Offset 0x00 + + * Type - The type of DFH (e.g. FME, AFU, or private feature). + * DFH VER - The version of the DFH. + * Rsvd - Currently unused. + * EOL - Set if the DFH is the end of the Device Feature List (DFL). + * Next - The offset in bytes of the next DFH in the DFL from the DFH start, + and the start of a DFH must be aligned to an 8 byte boundary. + If EOL is set, Next is the size of MMIO of the last feature in the list. + * REV - The revision of the feature associated with this header. + * ID - The feature ID if Type is private feature. + +- Offset 0x08 + + * GUID_L - Least significant 64 bits of a 128-bit Globally Unique Identifier. + +- Offset 0x10 + + * GUID_H - Most significant 64 bits of a 128-bit Globally Unique Identifier. + +- Offset 0x18 + + * Reg Address/Offset - If Rel bit is set, then the value is the high 63 bits + of a 16-bit aligned absolute address of the feature's registers. Otherwise + the value is the offset from the start of the DFH of the feature's registers. + +- Offset 0x20 + + * Reg Size - Size of feature's register set in bytes. + * Params - Set if DFH has a list of parameter blocks. + * Group - Id of group if feature is part of a group. + * Instance - Id of feature instance within a group. + +- Offset 0x28 if feature has parameters + + * Next - Offset to the next parameter block in 8 byte words. If EOP set, + size in 8 byte words of last parameter. + * Param Version - Version of Param ID. + * Param ID - ID of parameter. + +- Offset 0x30 + + * Parameter Data - Parameter data whose size and format is defined by + version and ID of the parameter. + + FIU - FME (FPGA Management Engine) ================================== The FPGA Management Engine performs reconfiguration and other infrastructure