From patchwork Mon Feb 24 02:10:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alistair Delva X-Patchwork-Id: 11399175 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 3254492A for ; Mon, 24 Feb 2020 02:10:37 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (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 103822067D for ; Mon, 24 Feb 2020 02:10:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=google.com header.i=@google.com header.b="OEZCOSfq" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 103822067D Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id DDDBC10FC3405; Sun, 23 Feb 2020 18:11:28 -0800 (PST) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=2607:f8b0:4864:20::64a; helo=mail-pl1-x64a.google.com; envelope-from=3mtbtxgykdeacfgnxciqqing.eqonkpwz-pxfkoonkuvu.23.qti@flex--adelva.bounces.google.com; receiver= Received: from mail-pl1-x64a.google.com (mail-pl1-x64a.google.com [IPv6:2607:f8b0:4864:20::64a]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 1BD3910FC33FF for ; Sun, 23 Feb 2020 18:11:26 -0800 (PST) Received: by mail-pl1-x64a.google.com with SMTP id q24so4295632pls.6 for ; Sun, 23 Feb 2020 18:10:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=U9x1EVLhqUbvxZ1MWzxoNmpwHOpemfs+Xxa6i1IJDww=; b=OEZCOSfqHyCH0n82I//mUildBSBEUUWtDcYiq5Oo5rR6qwCUGmKPZzbMBisxmcQAbs TwUoh4G1YcGAerITwUuZ71yplkGbaMvFWpjDhsl44azfyp7P/KC4RBOS12hgxQY8jm8M ldIXaMtQFvHvaRURHKQJFJiIDj0VeJ4hObpDLPxHCrY4fTUWKMlQ2GNmcvZ8TYBqHV9C VILHHGsrHmqLJFAja4WXRD36IvuFwZ9qn2f1/Ybes/BbOLiEuQ7gbF3HMSYDNIZzN2Wl 0+OLRiZL+3uLGxhSCLaFIvMWKj4va4dyktRr9Xz0/bsQkUhkikLjtVzf/ATL1C/LX4K+ hhyg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=U9x1EVLhqUbvxZ1MWzxoNmpwHOpemfs+Xxa6i1IJDww=; b=pmZQosJhy603LbyyrwS+CWniv4uACnXYDmCYtw9a0kG6l6NNOmADCYixTZBg89qmpd 4T1LOzW55pmBBGfW30TnOUOcMAMRMAXEHZR0+2BAiwhu4vMnPPgAkeAVl1FkMfvjpikI eQwlDBLuVmyJ97puwufgW2ImXNnqai63kxbEg2S6qjvc41dsocBmH5oGVHbuqSVC37vT pzBUdZmPHl3i/Qkf929p8rsibDzSTCmSA7JiWLWV+hIq75ALITp32F622zORdtFsLTkx A8g5XoSkwPz3acF0B8TTvs7mRU5NSz5NNID3ZQvGnBDLBzQ55IWRD3iInG2Xz92aJPwm 6wog== X-Gm-Message-State: APjAAAVdNmD3kDsEAdv9kx4+M02orLeq7z+PF6/lgCsIeWKV9GIGvgrF uw2fxOklSjyIbvg3T3Wiwrqa0j+sxeg= X-Google-Smtp-Source: APXvYqyTwjxCwbxReORBQcuv6XOeQhdEylhMml37cUwzX0Kd3xXx05FTdjuoUaIZYSsoX4pIMCxjPJwMRp0= X-Received: by 2002:a63:2e42:: with SMTP id u63mr49471649pgu.137.1582510233602; Sun, 23 Feb 2020 18:10:33 -0800 (PST) Date: Sun, 23 Feb 2020 18:10:28 -0800 In-Reply-To: <20200224021029.142701-1-adelva@google.com> Message-Id: <20200224021029.142701-2-adelva@google.com> Mime-Version: 1.0 References: <20200224021029.142701-1-adelva@google.com> X-Mailer: git-send-email 2.25.0.265.gbab2e86ba0-goog Subject: [PATCH v3 2/3] libnvdimm/of_pmem: handle memory-region in DT From: Alistair Delva To: linux-kernel@vger.kernel.org Message-ID-Hash: WQEDQZ6RSQW65BZQ52YAIZUYIWUMN4ZE X-Message-ID-Hash: WQEDQZ6RSQW65BZQ52YAIZUYIWUMN4ZE X-MailFrom: 3mTBTXgYKDEAcfgnxciqqing.eqonkpwz-pxfkoonkuvu.23.qti@flex--adelva.bounces.google.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: Kenny Root , Rob Herring , devicetree@vger.kernel.org, linux-nvdimm@lists.01.org, kernel-team@android.com X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: From: Kenny Root Add support for parsing the 'memory-region' DT property in addition to the 'reg' DT property. This enables use cases where the pmem region is not in I/O address space or dedicated memory (e.g. a bootloader carveout). Signed-off-by: Kenny Root Signed-off-by: Alistair Delva Reviewed-by: "Oliver O'Halloran" Cc: Rob Herring Cc: Dan Williams Cc: Vishal Verma Cc: Dave Jiang Cc: Ira Weiny Cc: devicetree@vger.kernel.org Cc: linux-nvdimm@lists.01.org Cc: kernel-team@android.com --- [v3: adelva: remove duplicate "From:"] drivers/nvdimm/of_pmem.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/nvdimm/of_pmem.c b/drivers/nvdimm/of_pmem.c index fdf54494e8c9..cff47cc5fc4a 100644 --- a/drivers/nvdimm/of_pmem.c +++ b/drivers/nvdimm/of_pmem.c @@ -49,11 +49,12 @@ static void of_pmem_register_region(struct platform_device *pdev, static int of_pmem_region_probe(struct platform_device *pdev) { + struct device_node *mr_np, *np; struct of_pmem_private *priv; - struct device_node *np; struct nvdimm_bus *bus; + struct resource res; bool is_volatile; - int i; + int i, ret; np = dev_of_node(&pdev->dev); if (!np) @@ -83,6 +84,21 @@ static int of_pmem_region_probe(struct platform_device *pdev) is_volatile); } + i = 0; + while ((mr_np = of_parse_phandle(np, "memory-region", i++))) { + ret = of_address_to_resource(mr_np, 0, &res); + if (ret) { + dev_warn( + &pdev->dev, + "Unable to acquire memory-region from %pOF: %d\n", + mr_np, ret); + } else { + of_pmem_register_region(pdev, bus, np, &res, + is_volatile); + } + of_node_put(mr_np); + } + return 0; }