From patchwork Mon Nov 4 03:21:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jamin Lin X-Patchwork-Id: 13860813 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E26FDD111A0 for ; Mon, 4 Nov 2024 03:22:24 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1t7nej-0005uG-NM; Sun, 03 Nov 2024 22:21:29 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1t7nea-0005sH-E7; Sun, 03 Nov 2024 22:21:21 -0500 Received: from mail.aspeedtech.com ([211.20.114.72] helo=TWMBX01.aspeed.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1t7neZ-0004QT-1g; Sun, 03 Nov 2024 22:21:20 -0500 Received: from TWMBX01.aspeed.com (192.168.0.62) by TWMBX01.aspeed.com (192.168.0.62) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.12; Mon, 4 Nov 2024 11:21:05 +0800 Received: from localhost.localdomain (192.168.10.10) by TWMBX01.aspeed.com (192.168.0.62) with Microsoft SMTP Server id 15.2.1258.12 via Frontend Transport; Mon, 4 Nov 2024 11:21:05 +0800 To: =?utf-8?q?C=C3=A9dric_Le_Goater?= , Peter Maydell , Steven Lee , Troy Lee , Andrew Jeffery , "Joel Stanley" , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Bin Meng , "open list:ASPEED BMCs" , "open list:All patches CC here" , "open list:SD (Secure Card)" CC: , , Subject: [PATCH v2 2/3] hw/sd/sdhci: Introduce a new Write Protected pin inverted property Date: Mon, 4 Nov 2024 11:21:03 +0800 Message-ID: <20241104032104.2784183-3-jamin_lin@aspeedtech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241104032104.2784183-1-jamin_lin@aspeedtech.com> References: <20241104032104.2784183-1-jamin_lin@aspeedtech.com> MIME-Version: 1.0 Received-SPF: pass client-ip=211.20.114.72; envelope-from=jamin_lin@aspeedtech.com; helo=TWMBX01.aspeed.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_FAIL=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-to: Jamin Lin X-Patchwork-Original-From: Jamin Lin via From: Jamin Lin Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The Write Protect pin of SDHCI model is default active low to match the SDHCI spec. So, write enable the bit 19 should be 1 and write protected the bit 19 should be 0 at the Present State Register (0x24). However, some boards are design Write Protected pin active high. In other words, write enable the bit 19 should be 0 and write protected the bit 19 should be 1 at the Present State Register (0x24). To support it, introduces a new "wp-inverted" property and set it false by default. Signed-off-by: Jamin Lin Acked-by: Cédric Le Goater --- hw/sd/sdhci.c | 6 ++++++ include/hw/sd/sdhci.h | 5 +++++ 2 files changed, 11 insertions(+) diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c index db7d547156..c675543873 100644 --- a/hw/sd/sdhci.c +++ b/hw/sd/sdhci.c @@ -275,6 +275,10 @@ static void sdhci_set_readonly(DeviceState *dev, bool level) { SDHCIState *s = (SDHCIState *)dev; + if (s->wp_inverted) { + level = !level; + } + if (level) { s->prnsts &= ~SDHC_WRITE_PROTECT; } else { @@ -1551,6 +1555,8 @@ static Property sdhci_sysbus_properties[] = { false), DEFINE_PROP_LINK("dma", SDHCIState, dma_mr, TYPE_MEMORY_REGION, MemoryRegion *), + DEFINE_PROP_BOOL("wp-inverted", SDHCIState, + wp_inverted, false), DEFINE_PROP_END_OF_LIST(), }; diff --git a/include/hw/sd/sdhci.h b/include/hw/sd/sdhci.h index 6cd2822f1d..25ad9ed778 100644 --- a/include/hw/sd/sdhci.h +++ b/include/hw/sd/sdhci.h @@ -100,6 +100,11 @@ struct SDHCIState { uint8_t sd_spec_version; uint8_t uhs_mode; uint8_t vendor; /* For vendor specific functionality */ + /* + * Write Protect pin default active low for detecting SD card + * to be protected. Set wp_inverted to true inverted the signal. + */ + bool wp_inverted; }; typedef struct SDHCIState SDHCIState;