From patchwork Fri Feb 26 08:32:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Avri Altman X-Patchwork-Id: 12106089 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3D537C433E6 for ; Fri, 26 Feb 2021 08:35:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EC4D964EE7 for ; Fri, 26 Feb 2021 08:35:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229727AbhBZIe5 (ORCPT ); Fri, 26 Feb 2021 03:34:57 -0500 Received: from esa6.hgst.iphmx.com ([216.71.154.45]:39220 "EHLO esa6.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230006AbhBZIen (ORCPT ); Fri, 26 Feb 2021 03:34:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1614328483; x=1645864483; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=0pGRZXLb1+wtT643DBu0cIFZ+O3AdUvJpqIxwaTZzaE=; b=GCCwgrQ+PImN4LhQjZOzSOqBXMxOHbP9CeNqgWLi/KpQDQumzOGM4e3x FKCeUuddmA85pCorVecGRiAPvcAUe0n7a6CBZcjvDGlOOE2Dvr7IYp8cc LvJDUrvPDEBtUTmhV4mbhYPwHUP6wmLufBWFTIhYm9uJNBKz2XRdaXlx2 gauVG56Ok7njBisR34myJZHdC/+b7SXa5AyvGKhnYsjsLOU+8b/wMk+ZF f/T5B+5+yf3rj1IperNyA+wY8tO4H/U9tk2itf6OfqP9+JY4XQ8gVs4x1 QJuH+hhwSTGqmmyT/4ManIKGr0Kl8/e3+x2HLTlMPDw29R0U3JyLPVtuP Q==; IronPort-SDR: baVBaYXnsGKwdw19dU+OEknaD26lQqO6xT+2o4GDEtRMj8wx2HVBa8YiQwWb9/HMMDleBTOlKI dEtjqyHD9ilen6btuawDj8AviKY3V77r05Z8/0jxxwDcDpIQEKKhXRTDfkHxZusqyiqaKmLH5k GpYTFvWFzA0Hkw2VEEYDvrUkEBBjRzmWgo2bt29mJvpY6EREyIcRM8I//5Mo//qxvecEIFvKyj wUzbMbM3jPSNgZuNKk82z5rJgoftLaeZD9Gy+sU5rXTEMuOVrdlRF089FOhZNfYunGNmWAec8N LuQ= X-IronPort-AV: E=Sophos;i="5.81,208,1610380800"; d="scan'208";a="162040897" Received: from h199-255-45-14.hgst.com (HELO uls-op-cesaep01.wdc.com) ([199.255.45.14]) by ob1.hgst.iphmx.com with ESMTP; 26 Feb 2021 16:33:28 +0800 IronPort-SDR: 2eLVfA/RdUlBn+ygwwUndp3w3wFRyMqdKznU3aodnu0pbb5ohv/jqwvW9SAvC6cFbXC1d96btJ Hs7NSMeqHQ+Pd76P7fsaFHwvzCtiVweR0+6/HUhxj7fZbpqXNRRP8Rz9jgL6siufvxM0/91qui 0rtwCuvYM6GHtYsa33x5bFM6gLBYl62NMezEjMz8A4tmrB0cvEWuVVhYtqygNnw62uPf0Wl6BM 5nSvQh9qBffqfCZHhSNl9W7FUb4t/dNFIDhV7WPA72dYkBi4WAmnVF0l/PMhWfdjl1k4Gazoro 8z0BQt5kxMtFp8OpDgoOK+am Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep01.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Feb 2021 00:16:41 -0800 IronPort-SDR: qsDd5HE+VLFeOkkbmI31DBIEi0LuuvYscolgNBXRMcpMSVmq5WJl+CZ/oB/9W9MX7rIC/K+L+J hzgEKYDFf3YljLHkAQ8ibEWVa7HJ1kk1v0jasbXpQrvwM5IH5Z4vI4+DO4xaCxm5fJhgftCLtG am0rgZCwIrZmn1jn5ZWYioCZ7sAc6PjsvxGEI58Oa7TgkPlUaGX3ZR2L4NV0j8DJBXc/WYqFyq 6kGQNpvzFZfpQa7ZJb5c0jFIM/4az/3C5XQyX1e3OAn5Hr9qi9Fbi5G/tit2RU6cjw6ZIg24e5 FyQ= WDCIronportException: Internal Received: from bxygm33.sdcorp.global.sandisk.com ([10.0.231.247]) by uls-op-cesaip02.wdc.com with ESMTP; 26 Feb 2021 00:33:24 -0800 From: Avri Altman To: "James E . J . Bottomley" , "Martin K . Petersen" , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: gregkh@linuxfoundation.org, Bart Van Assche , yongmyung lee , Daejun Park , alim.akhtar@samsung.com, asutoshd@codeaurora.org, Zang Leigang , Avi Shchislowski , Bean Huo , cang@codeaurora.org, stanley.chu@mediatek.com, Avri Altman Subject: [PATCH v4 0/9] Add Host control mode to HPB Date: Fri, 26 Feb 2021 10:32:51 +0200 Message-Id: <20210226083300.30934-1-avri.altman@wdc.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org v3 -> v4: - rebase on Daejun's v25 v2 -> v3: - Attend Greg's and Can's comments - rebase on Daejun's v21 v1 -> v2: - attend Greg's and Daejun's comments - add patch 9 making host mode parameters configurable - rebase on Daejun's v19 The HPB spec defines 2 control modes - device control mode and host control mode. In oppose to device control mode, in which the host obey to whatever recommendation received from the device - In host control mode, the host uses its own algorithms to decide which regions should be activated or inactivated. We kept the host managed heuristic simple and concise. Aside from adding a by-spec functionality, host control mode entails some further potential benefits: makes the hpb logic transparent and readable, while allow tuning / scaling its various parameters, and utilize system-wide info to optimize HPB potential. This series is based on Samsung's V25 device-control HPB2.0 driver, see msg-id: 20210226073233epcms2p80fca2dffabea03143a9414838f757633@epcms2p8 in lore.kernel.org. This version was tested on Galaxy S20, and Xiaomi Mi10 pro. Your meticulous review and testing is mostly welcome and appreciated. Thanks, Avri Avri Altman (9): scsi: ufshpb: Cache HPB Control mode on init scsi: ufshpb: Add host control mode support to rsp_upiu scsi: ufshpb: Add region's reads counter scsi: ufshpb: Make eviction depends on region's reads scsi: ufshpb: Region inactivation in host mode scsi: ufshpb: Add hpb dev reset response scsi: ufshpb: Add "Cold" regions timer scsi: ufshpb: Add support for host control mode scsi: ufshpb: Make host mode parameters configurable Documentation/ABI/testing/sysfs-driver-ufs | 67 +++ drivers/scsi/ufs/ufshcd.h | 2 + drivers/scsi/ufs/ufshpb.c | 528 ++++++++++++++++++++- drivers/scsi/ufs/ufshpb.h | 40 ++ 4 files changed, 613 insertions(+), 24 deletions(-)