From patchwork Fri Jun 25 19:17:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pratyush Yadav X-Patchwork-Id: 1497419 X-Patchwork-Delegate: jagannadh.teki@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=ti.com header.i=@ti.com header.a=rsa-sha256 header.s=ti-com-17Q1 header.b=aD4nrtL7; dkim-atps=neutral Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4GBRhp258Vz9sW8 for ; Sat, 26 Jun 2021 05:22:18 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id D292F82C91; Fri, 25 Jun 2021 21:19:37 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (1024-bit key; unprotected) header.d=ti.com header.i=@ti.com header.b="aD4nrtL7"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 2930B82C4F; Fri, 25 Jun 2021 21:18:50 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL,SPF_HELO_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from fllv0016.ext.ti.com (fllv0016.ext.ti.com [198.47.19.142]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 6643982C42 for ; Fri, 25 Jun 2021 21:18:39 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=p.yadav@ti.com Received: from lelv0265.itg.ti.com ([10.180.67.224]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 15PJIbnr078800; Fri, 25 Jun 2021 14:18:37 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1624648717; bh=5NUKpMj1OvRlYBn7htdjN/7qY/9PhRCdb42jGnz0XYI=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=aD4nrtL7e6b+NEnzIw2FCDVnlUgbpVzcmxOkS8qUVUWps42baZZc9dWjSwSdh5r64 CDn14gZI8/kA839gj0WO9iJR+3MtHP2b/L9VSe+PDEJQSbdkQ+5Yy6bv9kBVhyvUeA G0NA365LLYadL0puzqGGSdYFWsUeeXW2TmPIB+Tg= Received: from DLEE105.ent.ti.com (dlee105.ent.ti.com [157.170.170.35]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 15PJIbGf049740 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 25 Jun 2021 14:18:37 -0500 Received: from DLEE100.ent.ti.com (157.170.170.30) by DLEE105.ent.ti.com (157.170.170.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Fri, 25 Jun 2021 14:18:37 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DLEE100.ent.ti.com (157.170.170.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2 via Frontend Transport; Fri, 25 Jun 2021 14:18:37 -0500 Received: from pratyush-OptiPlex-790.dhcp.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 15PJHURe076530; Fri, 25 Jun 2021 14:18:35 -0500 From: Pratyush Yadav To: Jagan Teki , Vignesh R , Ryder Lee , Weijie Gao , Chunfeng Yun , GSS_MTK_Uboot_upstream , CC: Pratyush Yadav Subject: [PATCH v10 24/27] mtd: spi-nor-core: allow truncated erases Date: Sat, 26 Jun 2021 00:47:26 +0530 Message-ID: <20210625191729.31798-25-p.yadav@ti.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210625191729.31798-1-p.yadav@ti.com> References: <20210625191729.31798-1-p.yadav@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.2 at phobos.denx.de X-Virus-Status: Clean On devices with non-uniform sector sizes like Spansion S25 or S28 family of flashes the sector under erase does not necessarily have to be mtd->erasesize bytes long. For example, on S28 flashes the first 128 KiB region is composed of 32 4 KiB sectors, then a 128 KiB sector, and then 256 KiB sectors till the end. Let the flash-specific erase functions erase less than the requested length in case of the 4 or 128 KiB sectors and report the number of bytes erased back to the calling function. Signed-off-by: Pratyush Yadav --- drivers/mtd/spi/spi-nor-core.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c index 3bf9404490..ece4bc9e84 100644 --- a/drivers/mtd/spi/spi-nor-core.c +++ b/drivers/mtd/spi/spi-nor-core.c @@ -806,7 +806,8 @@ static int read_bar(struct spi_nor *nor, const struct flash_info *info) #endif /* - * Initiate the erasure of a single sector + * Initiate the erasure of a single sector. Returns the number of bytes erased + * on success, a negative error code on error. */ static int spi_nor_erase_sector(struct spi_nor *nor, u32 addr) { @@ -815,6 +816,7 @@ static int spi_nor_erase_sector(struct spi_nor *nor, u32 addr) SPI_MEM_OP_ADDR(nor->addr_width, addr, 0), SPI_MEM_OP_NO_DUMMY, SPI_MEM_OP_NO_DATA); + int ret; spi_nor_setup_op(nor, &op, nor->write_proto); @@ -825,7 +827,11 @@ static int spi_nor_erase_sector(struct spi_nor *nor, u32 addr) * Default implementation, if driver doesn't have a specialized HW * control */ - return spi_mem_exec_op(nor->spi, &op); + ret = spi_mem_exec_op(nor->spi, &op); + if (ret) + return ret; + + return nor->mtd.erasesize; } /* @@ -861,11 +867,11 @@ static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr) write_enable(nor); ret = spi_nor_erase_sector(nor, addr); - if (ret) + if (ret < 0) goto erase_err; - addr += mtd->erasesize; - len -= mtd->erasesize; + addr += ret; + len -= ret; ret = spi_nor_wait_till_ready(nor); if (ret)