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GET /api/patches/804530/?format=api
{ "id": 804530, "url": "http://patchwork.ozlabs.org/api/patches/804530/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/patch/1503414919-30820-6-git-send-email-bmeng.cn@gmail.com/", "project": { "id": 18, "url": "http://patchwork.ozlabs.org/api/projects/18/?format=api", "name": "U-Boot", "link_name": "uboot", "list_id": "u-boot.lists.denx.de", "list_email": "u-boot@lists.denx.de", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<1503414919-30820-6-git-send-email-bmeng.cn@gmail.com>", "list_archive_url": null, "date": "2017-08-22T15:15:10", "name": "[U-Boot,05/14] nvme: Cache controller's capabilities", "commit_ref": "b65c6921433c8fcf306b4671f9f9f7c68c36cefc", "pull_url": null, "state": "accepted", "archived": false, "hash": "9ea7cb1bd394a032eb01db2b925b3208845f71e9", "submitter": { "id": 64981, "url": "http://patchwork.ozlabs.org/api/people/64981/?format=api", "name": "Bin Meng", "email": "bmeng.cn@gmail.com" }, "delegate": { "id": 3651, "url": "http://patchwork.ozlabs.org/api/users/3651/?format=api", "username": "trini", "first_name": "Tom", "last_name": "Rini", "email": "trini@ti.com" }, "mbox": "http://patchwork.ozlabs.org/project/uboot/patch/1503414919-30820-6-git-send-email-bmeng.cn@gmail.com/mbox/", "series": [], "comments": "http://patchwork.ozlabs.org/api/patches/804530/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/804530/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<u-boot-bounces@lists.denx.de>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.denx.de\n\t(client-ip=81.169.180.215; helo=lists.denx.de;\n\tenvelope-from=u-boot-bounces@lists.denx.de;\n\treceiver=<UNKNOWN>)", "ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=gmail.com header.i=@gmail.com\n\theader.b=\"WzlZWGIA\"; dkim-atps=neutral" ], "Received": [ "from lists.denx.de (dione.denx.de [81.169.180.215])\n\tby ozlabs.org (Postfix) with ESMTP id 3xcDj14BLQz9sNd\n\tfor <incoming@patchwork.ozlabs.org>;\n\tWed, 23 Aug 2017 01:18:29 +1000 (AEST)", "by lists.denx.de (Postfix, from userid 105)\n\tid 53682C21F5F; Tue, 22 Aug 2017 15:12:17 +0000 (UTC)", "from lists.denx.de (localhost [IPv6:::1])\n\tby lists.denx.de (Postfix) with ESMTP id 0C35EC21E3B;\n\tTue, 22 Aug 2017 15:11:27 +0000 (UTC)", "by lists.denx.de (Postfix, from userid 105)\n\tid A1939C21EBD; Tue, 22 Aug 2017 15:11:09 +0000 (UTC)", "from mail-it0-f68.google.com (mail-it0-f68.google.com\n\t[209.85.214.68])\n\tby lists.denx.de (Postfix) with ESMTPS id A311BC21E11\n\tfor <u-boot@lists.denx.de>; Tue, 22 Aug 2017 15:11:05 +0000 (UTC)", "by mail-it0-f68.google.com with SMTP id w204so3940302ita.5\n\tfor <u-boot@lists.denx.de>; Tue, 22 Aug 2017 08:11:05 -0700 (PDT)", "from ala-d2121-lx1.wrs.com (unknown-156-139.windriver.com.\n\t[147.11.156.139]) by smtp.gmail.com with ESMTPSA id\n\ta189sm5182572itd.5.2017.08.22.08.11.03\n\t(version=TLS1_1 cipher=ECDHE-RSA-AES128-SHA bits=128/128);\n\tTue, 22 Aug 2017 08:11:03 -0700 (PDT)" ], "X-Spam-Checker-Version": "SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de", "X-Spam-Level": "", "X-Spam-Status": "No, score=-0.0 required=5.0 tests=FREEMAIL_FROM,\n\tRCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL,\n\tT_DKIM_INVALID\n\tautolearn=unavailable autolearn_force=no version=3.4.0", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025;\n\th=from:to:subject:date:message-id:in-reply-to:references;\n\tbh=kh4/agWYV6HVTyUZy+Ka5WEhyi/aNCxiEYhgllyfcuA=;\n\tb=WzlZWGIA792LwEkrI2EbSJhw++LeENDSbyX0c/xhWati7mPyuHxPI5E29ietW+blpI\n\tuhS8fJ3kckHrRlWKY5kJ4s9ify4V5ITjmoi6OeYJczdObXNI7HphbdFShgFOSH3Gx69T\n\tACZMix1TBBJr60fc1Tsn9ffRS94IhfC4em8t5erKS+vUPZ3QmAz31bBM+OwwqBBbNvNl\n\tgXThpS5vYNpMQ1kksVFQZCZ9KrnTpNvBU8s+JP1N0j46ieYm8GZtsrBmOGBVZnX+jwOB\n\tI+mrvKdy5qAKZ6lRbVWhKou8PxnoDsJuxtPMBHd4fj9Sri8gZqxqqXQzg1HnL1aGLwy6\n\tFXQg==", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:from:to:subject:date:message-id:in-reply-to\n\t:references;\n\tbh=kh4/agWYV6HVTyUZy+Ka5WEhyi/aNCxiEYhgllyfcuA=;\n\tb=fRJy7wG2j72NabXH5zFyDqrpIiX3QUPEPJludPh1yvv17EFVN9okJYPE4sS8XSZ16V\n\tByKh8FWhnqSoxaw0XODTWrRC/S1C2uYZMoIs3xmAACrI7LpKZG8eq3HWc46ZyHzmPC8K\n\tr2iuQ95+zpdgcDPkdezBX74ph7EzYWPlQX9WLq+jztghT+IBCdlb+HRF5bZbraOPyQBa\n\tfKWqYA1Dgzg3Lfb3vDd3HqwXiDnN9Q/O3GwuifTKCeb8JJWMlNPDM+7izfBF3T55Ivna\n\t8dbJ0DHukAM+wZH4ew8I61MlzCVQ42i5lxX2vzitWSSIV34Wast+mAZfkzqlV9EoED1W\n\t1uMQ==", "X-Gm-Message-State": "AHYfb5gqMKlBk5jmqB81RabzwJD7bQjj5LUzbhMPFD0j15n+9RYM562q\n\t0CeYLJ53/ftQ+g==", "X-Received": "by 10.36.47.149 with SMTP id j143mr217832itj.158.1503414664554; \n\tTue, 22 Aug 2017 08:11:04 -0700 (PDT)", "From": "Bin Meng <bmeng.cn@gmail.com>", "To": "Tom Rini <trini@konsulko.com>, U-Boot Mailing List <u-boot@lists.denx.de>", "Date": "Tue, 22 Aug 2017 08:15:10 -0700", "Message-Id": "<1503414919-30820-6-git-send-email-bmeng.cn@gmail.com>", "X-Mailer": "git-send-email 1.7.9.5", "In-Reply-To": "<1503414919-30820-1-git-send-email-bmeng.cn@gmail.com>", "References": "<1503414919-30820-1-git-send-email-bmeng.cn@gmail.com>", "Subject": "[U-Boot] [PATCH 05/14] nvme: Cache controller's capabilities", "X-BeenThere": "u-boot@lists.denx.de", "X-Mailman-Version": "2.1.18", "Precedence": "list", "List-Id": "U-Boot discussion <u-boot.lists.denx.de>", "List-Unsubscribe": "<https://lists.denx.de/options/u-boot>,\n\t<mailto:u-boot-request@lists.denx.de?subject=unsubscribe>", "List-Archive": "<http://lists.denx.de/pipermail/u-boot/>", "List-Post": "<mailto:u-boot@lists.denx.de>", "List-Help": "<mailto:u-boot-request@lists.denx.de?subject=help>", "List-Subscribe": "<https://lists.denx.de/listinfo/u-boot>,\n\t<mailto:u-boot-request@lists.denx.de?subject=subscribe>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "base64", "Errors-To": "u-boot-bounces@lists.denx.de", "Sender": "\"U-Boot\" <u-boot-bounces@lists.denx.de>" }, "content": "Capabilities register is RO and accessed at various places in the\ndriver. Let's cache it in the controller driver's priv struct.\n\nSigned-off-by: Bin Meng <bmeng.cn@gmail.com>\n---\n\n drivers/nvme/nvme.c | 11 +++++------\n drivers/nvme/nvme.h | 1 +\n 2 files changed, 6 insertions(+), 6 deletions(-)", "diff": "diff --git a/drivers/nvme/nvme.c b/drivers/nvme/nvme.c\nindex 2ae947c..d92273e 100644\n--- a/drivers/nvme/nvme.c\n+++ b/drivers/nvme/nvme.c\n@@ -318,7 +318,7 @@ static int nvme_configure_admin_queue(struct nvme_dev *dev)\n {\n \tint result;\n \tu32 aqa;\n-\tu64 cap = nvme_readq(&dev->bar->cap);\n+\tu64 cap = dev->cap;\n \tstruct nvme_queue *nvmeq;\n \t/* most architectures use 4KB as the page size */\n \tunsigned page_shift = 12;\n@@ -549,7 +549,7 @@ static int nvme_get_info_from_identify(struct nvme_dev *dev)\n {\n \tstruct nvme_id_ctrl buf, *ctrl = &buf;\n \tint ret;\n-\tint shift = NVME_CAP_MPSMIN(nvme_readq(&dev->bar->cap)) + 12;\n+\tint shift = NVME_CAP_MPSMIN(dev->cap) + 12;\n \n \tret = nvme_identify(dev, 0, 1, (dma_addr_t)ctrl);\n \tif (ret)\n@@ -772,7 +772,6 @@ static int nvme_probe(struct udevice *udev)\n {\n \tint ret;\n \tstruct nvme_dev *ndev = dev_get_priv(udev);\n-\tu64 cap;\n \n \tndev->instance = trailing_strtol(udev->name);\n \n@@ -801,9 +800,9 @@ static int nvme_probe(struct udevice *udev)\n \t}\n \tndev->prp_entry_num = MAX_PRP_POOL >> 3;\n \n-\tcap = nvme_readq(&ndev->bar->cap);\n-\tndev->q_depth = min_t(int, NVME_CAP_MQES(cap) + 1, NVME_Q_DEPTH);\n-\tndev->db_stride = 1 << NVME_CAP_STRIDE(cap);\n+\tndev->cap = nvme_readq(&ndev->bar->cap);\n+\tndev->q_depth = min_t(int, NVME_CAP_MQES(ndev->cap) + 1, NVME_Q_DEPTH);\n+\tndev->db_stride = 1 << NVME_CAP_STRIDE(ndev->cap);\n \tndev->dbs = ((void __iomem *)ndev->bar) + 4096;\n \n \tret = nvme_configure_admin_queue(ndev);\ndiff --git a/drivers/nvme/nvme.h b/drivers/nvme/nvme.h\nindex cd411be..f0fa639 100644\n--- a/drivers/nvme/nvme.h\n+++ b/drivers/nvme/nvme.h\n@@ -621,6 +621,7 @@ struct nvme_dev {\n \tchar model[40];\n \tchar firmware_rev[8];\n \tu32 max_transfer_shift;\n+\tu64 cap;\n \tu32 stripe_size;\n \tu32 page_size;\n \tu8 vwc;\n", "prefixes": [ "U-Boot", "05/14" ] }