From patchwork Wed Oct 16 11:15:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lars Pedersen X-Patchwork-Id: 11193099 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A6C16912 for ; Wed, 16 Oct 2019 11:16:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 86C502067B for ; Wed, 16 Oct 2019 11:16:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="AVuhKq+8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727653AbfJPLQY (ORCPT ); Wed, 16 Oct 2019 07:16:24 -0400 Received: from mail-lf1-f67.google.com ([209.85.167.67]:43507 "EHLO mail-lf1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392661AbfJPLQX (ORCPT ); Wed, 16 Oct 2019 07:16:23 -0400 Received: by mail-lf1-f67.google.com with SMTP id u3so17121184lfl.10 for ; Wed, 16 Oct 2019 04:16:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=jNz2l6RmEwE6Fc6A3eEYVtJGEkTSCgiCfzF9GXY5jH0=; b=AVuhKq+85lxvZynjjZBWhJwMItoDVGF2xtfG0T9C8RJmHBrK8LioE+U3sD97zp+9b0 MsJGip+/J8OoYQhsue8AGIv9T+paDfAlXHCBj774LxPHG/gMWnzxnQjl+Br/KI/7+uKF E62CUU26+XQBp3GLQcr2neQhnG3Rgfcl2xV1VavMvdle1mNgH5cDBRQbj9OAMgufUslr 4glYk3GnjV4EKzQQnHdByPT+io9ZdFD7St1Z7/tIFqsLioW8IA58uoP4TaydWjPBsBFc 3P4ltuzHIZFO3yJTQOJ93vsLOoUOR2GfAuw8xF0N1bztG+OepQIf8q9w5/jD7bpjI10v xOWw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=jNz2l6RmEwE6Fc6A3eEYVtJGEkTSCgiCfzF9GXY5jH0=; b=PN6IDz89Rj2V+sOn2UHdmlx0ZvllPaemS0g2BAh89xleeMlYFClrish8OzCq4k/VF8 rK9OyL7k9vDGhdJG/2PmQj6QXDTEktnbAovb2HQVlB0tB42aWGvB1fIY6tYpILPX+ED2 AuVmDbuBRhpqD2fosYe+81Fh4zX9cb+Fh2BXHLaP+C/fTrF/ldLZHPYGpT978rz49ykm 0eRr48yDjwo6TdW2E6OMujcHimHnmR3xa6p9hK2C5KiN7F2wU5dAWsgDgm2aj5H5imAN HRO+WVzbD2PSSNcMCv5+9jfx9nPbZKopXEFVKRrugKp2WdaVEKz140793xxpkZyrpc6P B2+w== X-Gm-Message-State: APjAAAWehx2tQ9WvN6xe6IL/hKKjY2J9KSdqrmKncctof4vf9y2q3JMr ZjwIkY21Gfo7FZ6tPcVmg7Q/2OdZ X-Google-Smtp-Source: APXvYqwgPGdcjoOxbwvA6aB+8qOkSd/BuMupwiBCN3SOzgqKdFXX0ja7og6I58cCtJDrKLUCZXnXfA== X-Received: by 2002:a05:6512:515:: with SMTP id o21mr24889349lfb.189.1571224581520; Wed, 16 Oct 2019 04:16:21 -0700 (PDT) Received: from laped.kamstrup.dk ([185.181.22.4]) by smtp.googlemail.com with ESMTPSA id b21sm6544729lff.96.2019.10.16.04.16.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Oct 2019 04:16:21 -0700 (PDT) From: Lars Pedersen X-Google-Original-From: Lars Pedersen To: linux-mmc@vger.kernel.org, avri.altman@wdc.com, michael.heimpold@i2se.com Cc: Lars Pedersen Subject: [PATCH 2/2] mmc-utils: Support for bkops start when manual background operation is used. Date: Wed, 16 Oct 2019 13:15:42 +0200 Message-Id: <20191016111542.31358-3-laa@kamstrup.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191016111542.31358-1-laa@kamstrup.com> References: <20191016111542.31358-1-laa@kamstrup.com> MIME-Version: 1.0 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: Lars Pedersen Add bkops start functionality when BKOPS_EN[0](MANUAL_EN) is set. --- mmc.c | 5 +++++ mmc.h | 5 +++++ mmc_cmds.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ mmc_cmds.h | 1 + 4 files changed, 57 insertions(+) diff --git a/mmc.c b/mmc.c index 9e02ba0..4ea1339 100644 --- a/mmc.c +++ b/mmc.c @@ -131,6 +131,11 @@ static struct Command commands[] = { "NOTE! Only supported in eMMC-5.1 and MANUAL_EN(BKOPS_EN[0]) must not be set", NULL }, + { do_write_bkops_start, -1, + "bkops start", "\n" + "Manually start eMMC BKOPS feature on .\nNOTE! BKOPS_EN[0] must be set.", + NULL + }, { do_hwreset_en, -1, "hwreset enable", "\n" "Permanently enable the eMMC H/W Reset feature on .\nNOTE! This is a one-time programmable (unreversible) change.", diff --git a/mmc.h b/mmc.h index 0596d6c..a804067 100644 --- a/mmc.h +++ b/mmc.h @@ -80,6 +80,7 @@ #define EXT_CSD_WR_REL_SET 167 #define EXT_CSD_WR_REL_PARAM 166 #define EXT_CSD_SANITIZE_START 165 +#define EXT_CSD_BKOPS_START 164 #define EXT_CSD_BKOPS_EN 163 /* R/W */ #define EXT_CSD_RST_N_FUNCTION 162 /* R/W */ #define EXT_CSD_PARTITIONING_SUPPORT 160 /* RO */ @@ -132,6 +133,10 @@ #define BKOPS_ENABLE_AUTO_SET (1<<1) /* AUTO_EN */ #define BKOPS_ENABLE_AUTO_CLR (0) /* AUTO_EN */ +/* + * BKOPS_START field definition + */ +#define BKOPS_START (1<<0) /* * EXT_CSD field definitions diff --git a/mmc_cmds.c b/mmc_cmds.c index 05a63db..db1e98c 100644 --- a/mmc_cmds.c +++ b/mmc_cmds.c @@ -829,6 +829,52 @@ int do_write_bkops_auto_en(int nargs, char **argv) return ret; } +int do_write_bkops_start(int nargs, char **argv) +{ + __u8 ext_csd[512], value = 0; + int fd, ret; + char *device; + + if (nargs != 2) { + fprintf(stderr, "Usage: mmc bkops start \n"); + exit(1); + } + + device = argv[1]; + + fd = open(device, O_RDWR); + if (fd < 0) { + perror("open"); + exit(1); + } + + ret = read_extcsd(fd, ext_csd); + if (ret) { + fprintf(stderr, "Could not read EXT_CSD from %s\n", device); + exit(1); + } + + if (!(ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1)) { + fprintf(stderr, "%s doesn't support background operations\n", device); + exit(1); + } + + if (!(ext_csd[EXT_CSD_BKOPS_EN] & 0x1)) { + fprintf(stderr, "%s manual starting of background operations isn't enabled\n", device); + exit(1); + } + + ret = write_extcsd_value(fd, EXT_CSD_BKOPS_START, BKOPS_START); + if (ret) { + fprintf(stderr, "Could not write 0x%02x to EXT_CSD[%d] in %s\n", + value, EXT_CSD_BKOPS_EN, device); + exit(1); + } + + return ret; +} + + int do_status_get(int nargs, char **argv) { __u32 response; diff --git a/mmc_cmds.h b/mmc_cmds.h index 7f825ae..91b7ec5 100644 --- a/mmc_cmds.h +++ b/mmc_cmds.h @@ -29,6 +29,7 @@ int do_write_boot_en(int nargs, char **argv); int do_boot_bus_conditions_set(int nargs, char **argv); int do_write_bkops_manual_en(int nargs, char **argv); int do_write_bkops_auto_en(int nargs, char **argv); +int do_write_bkops_start(int nargs, char **argv); int do_hwreset_en(int nargs, char **argv); int do_hwreset_dis(int nargs, char **argv); int do_sanitize(int nargs, char **argv);