From mboxrd@z Thu Jan 1 00:00:00 1970 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=-3.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,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 7E852C4360F for ; Fri, 5 Apr 2019 10:09:13 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4ED05217D4 for ; Fri, 5 Apr 2019 10:09:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Bf3DRLRb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4ED05217D4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=i3jwGJoC+56cHaIS5WsYpePWtR7UYNGFPL30cxhCJmQ=; b=Bf3DRLRb6MNHhS c22tLYCWUP7vnDD44Uh5urp2PB2Rn7BgCmT6Z0Kj2RSusjhTcq/8prP0TYolDQlmGd6k1Bs07cmeE 3XfReMYHXVDj15Z3YDdljoW6se9M41O2+7C5wHCDutEydZ891bZk06GKuoer5lG78XFKMA4HP2sEg sCj1FYbfU7faAuT6mGZOW399PxDnKEravgiVAle9xXSenTnns8NvvYFHNaVRouUfB3GMTa1MJuivr yrogo0EhJrTlmo4KGSNLaFWmfuC9nOYrThrJDCyFAUMq8Xsn1R2vNS9CmPfbhTn3sYX/78u2ArXl9 CFwFljcVvdcdVkDzx5UA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hCLmY-0002WS-7F; Fri, 05 Apr 2019 10:09:10 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hCLlb-0001Jr-Lp for linux-mtd@lists.infradead.org; Fri, 05 Apr 2019 10:08:46 +0000 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hCLlB-0000RI-TP; Fri, 05 Apr 2019 12:07:45 +0200 Received: from sha by dude.hi.pengutronix.de with local (Exim 4.92-RC6) (envelope-from ) id 1hCLlA-0008Ik-F8; Fri, 05 Apr 2019 12:07:44 +0200 From: Sascha Hauer To: linux-mtd@lists.infradead.org Subject: [PATCH 00/10] Implement exec_op for GPMI nand driver Date: Fri, 5 Apr 2019 12:07:30 +0200 Message-Id: <20190405100740.5074-1-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-mtd@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190405_030812_371144_C59EF193 X-CRM114-Status: GOOD ( 11.93 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sam Lefebvre , Boris Brezillon , Richard Weinberger , Sascha Hauer , kernel@pengutronix.de, Miquel Raynal , Han Xu Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org The GPMI nand driver suffers from very poor performance. The read performance can be roughly doubled with two steps: First is to use runtime PM for controlling the clocks which prevents the driver from spending a good amount of time en/disabling the clocks. The second step is to implement exec_op which allows us to combine the steps necessary to do a page read into a single DMA transaction. Sascha Sascha Hauer (10): mtd: rawnand: export nand operation tracer mtd: rawnand: fsmc: Use nand_op_trace for operation tracing mtd: rawnand: gpmi: move all driver code into single file mtd: rawnand: gpmi: remove unused variable mtd: rawnand: gpmi: Remove unnecessary variables mtd: rawnand: gpmi: read buf in nand_read_page_op mtd: rawnand: gpmi: remove unused parameters mtd: rawnand: gpmi: Drop unnecessary restoring of previous chipselection mtd: rawnand: gpmi: use runtime PM to manage clocks mtd: rawnand: gpmi: Implement exec_op drivers/dma/mxs-dma.c | 3 + drivers/mtd/nand/raw/fsmc_nand.c | 19 +- drivers/mtd/nand/raw/gpmi-nand/Makefile | 1 - drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c | 936 ----------- drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 1694 ++++++++++++++------ drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h | 64 +- drivers/mtd/nand/raw/nand_base.c | 30 +- include/linux/mtd/rawnand.h | 37 + 8 files changed, 1236 insertions(+), 1548 deletions(-) delete mode 100644 drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c -- 2.20.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/