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GET /api/patches/1641677/?format=api
{ "id": 1641677, "url": "http://patchwork.ozlabs.org/api/patches/1641677/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ide/patch/20220610081801.11854-22-Sergey.Semin@baikalelectronics.ru/", "project": { "id": 13, "url": "http://patchwork.ozlabs.org/api/projects/13/?format=api", "name": "Linux IDE development", "link_name": "linux-ide", "list_id": "linux-ide.vger.kernel.org", "list_email": "linux-ide@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20220610081801.11854-22-Sergey.Semin@baikalelectronics.ru>", "list_archive_url": null, "date": "2022-06-10T08:17:59", "name": "[v4,21/23] ata: ahci-dwc: Add platform-specific quirks support", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "89303faaed4bbc38789940f25884c39507013ebb", "submitter": { "id": 78624, "url": "http://patchwork.ozlabs.org/api/people/78624/?format=api", "name": "Serge Semin", "email": "Sergey.Semin@baikalelectronics.ru" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-ide/patch/20220610081801.11854-22-Sergey.Semin@baikalelectronics.ru/mbox/", "series": [ { "id": 304159, "url": "http://patchwork.ozlabs.org/api/series/304159/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-ide/list/?series=304159", "date": "2022-06-10T08:17:42", "name": "ata: ahci: Add DWC/Baikal-T1 AHCI SATA support", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/304159/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/1641677/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/1641677/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linux-ide-owner@vger.kernel.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "bilbo.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=baikalelectronics.ru header.i=@baikalelectronics.ru\n header.a=rsa-sha256 header.s=mail header.b=i8xAiVdu;\n\tdkim-atps=neutral", "ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2620:137:e000::1:20; helo=out1.vger.email;\n envelope-from=linux-ide-owner@vger.kernel.org; receiver=<UNKNOWN>)" ], "Received": [ "from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20])\n\tby bilbo.ozlabs.org (Postfix) with ESMTP id 4LKDQ160z4z9s09\n\tfor <incoming@patchwork.ozlabs.org>; Fri, 10 Jun 2022 18:19:05 +1000 (AEST)", "(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n id S1347501AbiFJITE (ORCPT <rfc822;incoming@patchwork.ozlabs.org>);\n Fri, 10 Jun 2022 04:19:04 -0400", "from lindbergh.monkeyblade.net ([23.128.96.19]:36212 \"EHLO\n lindbergh.monkeyblade.net\" rhost-flags-OK-OK-OK-OK) by vger.kernel.org\n with ESMTP id S1347342AbiFJISp (ORCPT\n <rfc822;linux-ide@vger.kernel.org>); Fri, 10 Jun 2022 04:18:45 -0400", "from mail.baikalelectronics.com (mail.baikalelectronics.com\n [87.245.175.230])\n by lindbergh.monkeyblade.net (Postfix) with ESMTP id 777EC253812;\n Fri, 10 Jun 2022 01:18:43 -0700 (PDT)", "from mail (mail.baikal.int [192.168.51.25])\n by mail.baikalelectronics.com (Postfix) with ESMTP id 86BC016C0;\n Fri, 10 Jun 2022 11:19:12 +0300 (MSK)", "from localhost (192.168.53.207) by mail (192.168.51.25) with\n Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 10 Jun 2022 11:18:20 +0300" ], "DKIM-Filter": "OpenDKIM Filter v2.11.0 mail.baikalelectronics.com 86BC016C0", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=baikalelectronics.ru; s=mail; t=1654849152;\n bh=J2syxJxPBxl/O9ELEC45e3GC4/7pOxuTZBZ19Urz1aA=;\n h=From:To:CC:Subject:Date:In-Reply-To:References:From;\n b=i8xAiVduBqO1BNwKL26BBmtgk8hsiX/veoSUjgmCYK5rK18JD0ZGVopEhmDNVLA/k\n Avgd+ZS93zVDRNMVfg6cAbSNYwSoyVm/WdxhJ44n1cpGfWQ62Yz2yMLB4yAMEMrbgE\n VxqZpcISmKtZaAXTNF5yjFauesZT5enYvJnBEJtg=", "From": "Serge Semin <Sergey.Semin@baikalelectronics.ru>", "To": "Damien Le Moal <damien.lemoal@opensource.wdc.com>,\n Hans de Goede <hdegoede@redhat.com>,\n Jens Axboe <axboe@kernel.dk>, Hannes Reinecke <hare@suse.de>,\n Serge Semin <fancer.lancer@gmail.com>", "CC": "Serge Semin <Sergey.Semin@baikalelectronics.ru>,\n Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>,\n Pavel Parkhomenko <Pavel.Parkhomenko@baikalelectronics.ru>,\n Rob Herring <robh+dt@kernel.org>, <linux-ide@vger.kernel.org>,\n <linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>", "Subject": "[PATCH v4 21/23] ata: ahci-dwc: Add platform-specific quirks support", "Date": "Fri, 10 Jun 2022 11:17:59 +0300", "Message-ID": "<20220610081801.11854-22-Sergey.Semin@baikalelectronics.ru>", "In-Reply-To": "<20220610081801.11854-1-Sergey.Semin@baikalelectronics.ru>", "References": "<20220610081801.11854-1-Sergey.Semin@baikalelectronics.ru>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-ClientProxiedBy": "MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25)", "X-Spam-Status": "No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,\n DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_PASS,SPF_PASS,\n T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no\n version=3.4.6", "X-Spam-Checker-Version": "SpamAssassin 3.4.6 (2021-04-09) on\n lindbergh.monkeyblade.net", "Precedence": "bulk", "List-ID": "<linux-ide.vger.kernel.org>", "X-Mailing-List": "linux-ide@vger.kernel.org" }, "content": "Some DWC AHCI SATA IP-core derivatives require to perform small platform\nor IP-core specific setups. They are too small to be placed in a dedicated\ndriver. It's just much easier to have a set of quirks for them right in\nthe DWC AHCI driver code. Since we are about to add such platform support,\nas a pre-requisite we introduce a platform-data based DWC AHCI quirks API.\nThe platform data can be used to define the flags passed to the\nahci_platform_get_resources() method, additional AHCI host-flags and a set\nof callbacks to initialize, re-initialize and clear the platform settings.\n\nSigned-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>\n\n---\n\nChangelog v2:\n- Change the local objects prefix from 'dwc_ahci_' to 'ahci_dwc_'.\n (@Damien)\n\nChangelog v4:\n- Convert ahci_dwc_plat to being statically defined. (@kbot)\n---\n drivers/ata/ahci_dwc.c | 52 ++++++++++++++++++++++++++++++++++++++----\n 1 file changed, 48 insertions(+), 4 deletions(-)", "diff": "diff --git a/drivers/ata/ahci_dwc.c b/drivers/ata/ahci_dwc.c\nindex 8c2510933a31..ab4180b7ed23 100644\n--- a/drivers/ata/ahci_dwc.c\n+++ b/drivers/ata/ahci_dwc.c\n@@ -90,7 +90,16 @@\n #define AHCI_DWC_PORT_PHYCR\t\t0x74\n #define AHCI_DWC_PORT_PHYSR\t\t0x78\n \n+struct ahci_dwc_plat_data {\n+\tunsigned int pflags;\n+\tunsigned int hflags;\n+\tint (*init)(struct ahci_host_priv *hpriv);\n+\tint (*reinit)(struct ahci_host_priv *hpriv);\n+\tvoid (*clear)(struct ahci_host_priv *hpriv);\n+};\n+\n struct ahci_dwc_host_priv {\n+\tconst struct ahci_dwc_plat_data *pdata;\n \tstruct platform_device *pdev;\n \n \tu32 timv;\n@@ -107,11 +116,15 @@ static struct ahci_host_priv *ahci_dwc_get_resources(struct platform_device *pde\n \t\treturn ERR_PTR(-ENOMEM);\n \n \tdpriv->pdev = pdev;\n+\tdpriv->pdata = device_get_match_data(&pdev->dev);\n+\tif (!dpriv->pdata)\n+\t\treturn ERR_PTR(-EINVAL);\n \n-\thpriv = ahci_platform_get_resources(pdev, AHCI_PLATFORM_GET_RESETS);\n+\thpriv = ahci_platform_get_resources(pdev, dpriv->pdata->pflags);\n \tif (IS_ERR(hpriv))\n \t\treturn hpriv;\n \n+\thpriv->flags |= dpriv->pdata->hflags;\n \thpriv->plat_data = (void *)dpriv;\n \n \treturn hpriv;\n@@ -242,22 +255,33 @@ static int ahci_dwc_init_dmacr(struct ahci_host_priv *hpriv)\n \n static int ahci_dwc_init_host(struct ahci_host_priv *hpriv)\n {\n+\tstruct ahci_dwc_host_priv *dpriv = hpriv->plat_data;\n \tint rc;\n \n \trc = ahci_platform_enable_resources(hpriv);\n \tif (rc)\n \t\treturn rc;\n \n+\tif (dpriv->pdata->init) {\n+\t\trc = dpriv->pdata->init(hpriv);\n+\t\tif (rc)\n+\t\t\tgoto err_disable_resources;\n+\t}\n+\n \tahci_dwc_check_cap(hpriv);\n \n \tahci_dwc_init_timer(hpriv);\n \n \trc = ahci_dwc_init_dmacr(hpriv);\n \tif (rc)\n-\t\tgoto err_disable_resources;\n+\t\tgoto err_clear_platform;\n \n \treturn 0;\n \n+err_clear_platform:\n+\tif (dpriv->pdata->clear)\n+\t\tdpriv->pdata->clear(hpriv);\n+\n err_disable_resources:\n \tahci_platform_disable_resources(hpriv);\n \n@@ -275,6 +299,12 @@ static int ahci_dwc_reinit_host(struct ahci_host_priv *hpriv)\n \tif (rc)\n \t\treturn rc;\n \n+\tif (dpriv->pdata->reinit) {\n+\t\trc = dpriv->pdata->reinit(hpriv);\n+\t\tif (rc)\n+\t\t\tgoto err_disable_resources;\n+\t}\n+\n \twritel(dpriv->timv, hpriv->mmio + AHCI_DWC_HOST_TIMER1MS);\n \n \tfor_each_set_bit(i, &port_map, AHCI_MAX_PORTS) {\n@@ -283,10 +313,20 @@ static int ahci_dwc_reinit_host(struct ahci_host_priv *hpriv)\n \t}\n \n \treturn 0;\n+\n+err_disable_resources:\n+\tahci_platform_disable_resources(hpriv);\n+\n+\treturn rc;\n }\n \n static void ahci_dwc_clear_host(struct ahci_host_priv *hpriv)\n {\n+\tstruct ahci_dwc_host_priv *dpriv = hpriv->plat_data;\n+\n+\tif (dpriv->pdata->clear)\n+\t\tdpriv->pdata->clear(hpriv);\n+\n \tahci_platform_disable_resources(hpriv);\n }\n \n@@ -371,9 +411,13 @@ static int ahci_dwc_resume(struct device *dev)\n \n static SIMPLE_DEV_PM_OPS(ahci_dwc_pm_ops, ahci_dwc_suspend, ahci_dwc_resume);\n \n+static struct ahci_dwc_plat_data ahci_dwc_plat = {\n+\t.pflags = AHCI_PLATFORM_GET_RESETS,\n+};\n+\n static const struct of_device_id ahci_dwc_of_match[] = {\n-\t{ .compatible = \"snps,dwc-ahci\", },\n-\t{ .compatible = \"snps,spear-ahci\", },\n+\t{ .compatible = \"snps,dwc-ahci\", &ahci_dwc_plat },\n+\t{ .compatible = \"snps,spear-ahci\", &ahci_dwc_plat },\n \t{},\n };\n MODULE_DEVICE_TABLE(of, ahci_dwc_of_match);\n", "prefixes": [ "v4", "21/23" ] }