From patchwork Mon Aug 22 19:14:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 12951238 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2694BC28D13 for ; Mon, 22 Aug 2022 19:14:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238349AbiHVTOx (ORCPT ); Mon, 22 Aug 2022 15:14:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43744 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238269AbiHVTOl (ORCPT ); Mon, 22 Aug 2022 15:14:41 -0400 Received: from mail.baikalelectronics.com (mail.baikalelectronics.com [87.245.175.230]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 2BAE128E36; Mon, 22 Aug 2022 12:14:40 -0700 (PDT) Received: from mail (mail.baikal.int [192.168.51.25]) by mail.baikalelectronics.com (Postfix) with ESMTP id 80D82DA6; Mon, 22 Aug 2022 22:17:46 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mail.baikalelectronics.com 80D82DA6 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baikalelectronics.ru; s=mail; t=1661195866; bh=z4bJmTJq93ppPtElTBvIhg00dYF7lC245GPtGAEfv08=; h=From:To:CC:Subject:Date:In-Reply-To:References:From; b=lu39DrDC+YwrpOcwtl5utrdg2Gprn5rLupOp2g+E5hcMdPtrDD4J52I9nPBJciiji V4XLaTu31NPf3786GwXiv2HBgPxa3REJo3yAVvIqrXnZPrRA7jJRc5dnE3eca3xmKF yRNLj1/gyjmGHVRcKGnogPiND63qrVkIEYHrYumU= Received: from localhost (192.168.168.10) by mail (192.168.51.25) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 22 Aug 2022 22:14:31 +0300 From: Serge Semin To: Michal Simek , Borislav Petkov , Mauro Carvalho Chehab , Tony Luck , James Morse , Robert Richter CC: Serge Semin , Serge Semin , Alexey Malahov , Michail Ivanov , Pavel Parkhomenko , Punnaiah Choudary Kalluri , Manish Narani , Dinh Nguyen , , , Subject: [PATCH 04/18] EDAC/synopsys: Detach private data from mci instance Date: Mon, 22 Aug 2022 22:14:13 +0300 Message-ID: <20220822191427.27969-5-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20220822191427.27969-1-Sergey.Semin@baikalelectronics.ru> References: <20220822191427.27969-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org We are about to add a more comprehensive DW uMCTL2 DDRC parameters detection procedure and some resources requests (clocks and resets). Since these parameters will be utilized in the various parts of the driver and in particular used for the Memory Controller data instance pre-initialization, they need to be first retrieved before the MCI is allocated and second preserved in the driver private data. Therefore the best approach would be to add the parameters structure right into the driver private data and make sure the data is allocated separately from the mem_ctl_info instance. For that we suggest to add a new static method snps_data_create(), which aside with the snps_edac_priv structure allocation will also perform the private data basic initialization like CSRs region mapping, device data getting, platform data pointer copying and spin-lock initialization. In addition to that the snps_mc_init() will be converted to snps_mc_create(), which from now will be used to allocate and initialize the mem_ctl_info structure instance. Note in order to have an access to the snps_edac_priv structure instance, as before the mem_ctl_info.pvt_info pointer will be utilized. Signed-off-by: Serge Semin --- drivers/edac/synopsys_edac.c | 138 ++++++++++++++++++++++------------- 1 file changed, 89 insertions(+), 49 deletions(-) diff --git a/drivers/edac/synopsys_edac.c b/drivers/edac/synopsys_edac.c index 1aaf355798bd..10dc9e9d66d9 100644 --- a/drivers/edac/synopsys_edac.c +++ b/drivers/edac/synopsys_edac.c @@ -240,6 +240,7 @@ struct snps_ecc_status { /** * struct snps_edac_priv - DDR memory controller private data. + * @pdev: Platform device. * @baseaddr: Base address of the DDR controller. * @lock: Concurrent CSRs access lock. * @message: Buffer for framing the event specific info. @@ -253,6 +254,7 @@ struct snps_ecc_status { * @rank_shift: Bit shifts for rank bit. */ struct snps_edac_priv { + struct platform_device *pdev; void __iomem *baseaddr; spinlock_t lock; char message[SNPS_EDAC_MSG_SIZE]; @@ -460,6 +462,34 @@ static irqreturn_t snps_irq_handler(int irq, void *dev_id) return IRQ_HANDLED; } +/** + * snps_create_data - Create private data. + * @pdev: platform device. + * + * Return: Private data instance or negative errno. + */ +static struct snps_edac_priv *snps_create_data(struct platform_device *pdev) +{ + struct snps_edac_priv *priv; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return ERR_PTR(-ENOMEM); + + priv->baseaddr = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(priv->baseaddr)) + return ERR_CAST(priv->baseaddr); + + priv->p_data = of_device_get_match_data(&pdev->dev); + if (!priv->p_data) + return ERR_PTR(-ENODEV); + + priv->pdev = pdev; + spin_lock_init(&priv->lock); + + return priv; +} + /** * snps_get_dtype - Return the controller memory width. * @base: DDR memory controller base address. @@ -591,21 +621,36 @@ static void snps_init_csrows(struct mem_ctl_info *mci) } /** - * snps_mc_init - Initialize one driver instance. - * @mci: EDAC memory controller instance. - * @pdev: platform device. + * snps_mc_create - Create and initialize MC instance. + * @priv: DDR memory controller private data. + * + * Allocate the EDAC memory controller descriptor and initialize it + * using the private data info. * - * Perform initialization of the EDAC memory controller instance and - * related driver-private data associated with the memory controller the - * instance is bound to. + * Return: MC data instance or negative errno. */ -static void snps_mc_init(struct mem_ctl_info *mci, struct platform_device *pdev) +static struct mem_ctl_info *snps_mc_create(struct snps_edac_priv *priv) { - struct snps_edac_priv *priv; + struct edac_mc_layer layers[2]; + struct mem_ctl_info *mci; - mci->pdev = &pdev->dev; - priv = mci->pvt_info; - platform_set_drvdata(pdev, mci); + layers[0].type = EDAC_MC_LAYER_CHIP_SELECT; + layers[0].size = SNPS_EDAC_NR_CSROWS; + layers[0].is_virt_csrow = true; + layers[1].type = EDAC_MC_LAYER_CHANNEL; + layers[1].size = SNPS_EDAC_NR_CHANS; + layers[1].is_virt_csrow = false; + + mci = edac_mc_alloc(EDAC_AUTO_MC_NUM, ARRAY_SIZE(layers), layers, 0); + if (!mci) { + edac_printk(KERN_ERR, EDAC_MC, + "Failed memory allocation for mc instance\n"); + return ERR_PTR(-ENOMEM); + } + + mci->pvt_info = priv; + mci->pdev = &priv->pdev->dev; + platform_set_drvdata(priv->pdev, mci); /* Initialize controller capabilities and configuration */ mci->mtype_cap = MEM_FLAG_LPDDR | MEM_FLAG_DDR2 | MEM_FLAG_LPDDR2 | @@ -625,24 +670,43 @@ static void snps_mc_init(struct mem_ctl_info *mci, struct platform_device *pdev) mci->ctl_page_to_phys = NULL; snps_init_csrows(mci); + + return mci; } +/** + * snps_mc_free - Free MC instance. + * @mci: EDAC memory controller instance. + * + * Just revert what was done in the framework of the snps_mc_create(). + * + * Return: MC data instance or negative errno. + */ +static void snps_mc_free(struct mem_ctl_info *mci) +{ + struct snps_edac_priv *priv = mci->pvt_info; + platform_set_drvdata(priv->pdev, NULL); -static int snps_setup_irq(struct mem_ctl_info *mci, struct platform_device *pdev) + edac_mc_free(mci); +} + + + +static int snps_setup_irq(struct mem_ctl_info *mci) { struct snps_edac_priv *priv = mci->pvt_info; int ret, irq; - irq = platform_get_irq(pdev, 0); + irq = platform_get_irq(priv->pdev, 0); if (irq < 0) { edac_printk(KERN_ERR, EDAC_MC, "No IRQ %d in DT\n", irq); return irq; } - ret = devm_request_irq(&pdev->dev, irq, snps_irq_handler, - 0, dev_name(&pdev->dev), mci); + ret = devm_request_irq(&priv->pdev->dev, irq, snps_irq_handler, + 0, dev_name(&priv->pdev->dev), mci); if (ret < 0) { edac_printk(KERN_ERR, EDAC_MC, "Failed to request IRQ\n"); return ret; @@ -1066,49 +1130,24 @@ static inline void snps_create_debugfs_nodes(struct mem_ctl_info *mci) {} */ static int snps_mc_probe(struct platform_device *pdev) { - const struct snps_platform_data *p_data; - struct edac_mc_layer layers[2]; struct snps_edac_priv *priv; struct mem_ctl_info *mci; - void __iomem *baseaddr; int rc; - baseaddr = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(baseaddr)) - return PTR_ERR(baseaddr); - - p_data = of_device_get_match_data(&pdev->dev); - if (!p_data) - return -ENODEV; + priv = snps_create_data(pdev); + if (IS_ERR(priv)) + return PTR_ERR(priv); if (!snps_get_ecc_state(baseaddr)) { edac_printk(KERN_INFO, EDAC_MC, "ECC not enabled\n"); return -ENXIO; } - layers[0].type = EDAC_MC_LAYER_CHIP_SELECT; - layers[0].size = SNPS_EDAC_NR_CSROWS; - layers[0].is_virt_csrow = true; - layers[1].type = EDAC_MC_LAYER_CHANNEL; - layers[1].size = SNPS_EDAC_NR_CHANS; - layers[1].is_virt_csrow = false; - - mci = edac_mc_alloc(EDAC_AUTO_MC_NUM, ARRAY_SIZE(layers), layers, - sizeof(struct snps_edac_priv)); - if (!mci) { - edac_printk(KERN_ERR, EDAC_MC, - "Failed memory allocation for mc instance\n"); - return -ENOMEM; - } - - priv = mci->pvt_info; - priv->baseaddr = baseaddr; - priv->p_data = p_data; - spin_lock_init(&priv->lock); - - snps_mc_init(mci, pdev); + mci = snps_mc_create(priv); + if (IS_ERR(mci)) + return PTR_ERR(mci); - rc = snps_setup_irq(mci, pdev); + rc = snps_setup_irq(mci); if (rc) goto free_edac_mc; @@ -1124,7 +1163,7 @@ static int snps_mc_probe(struct platform_device *pdev) return 0; free_edac_mc: - edac_mc_free(mci); + snps_mc_free(mci); return rc; } @@ -1143,7 +1182,8 @@ static int snps_mc_remove(struct platform_device *pdev) snps_disable_irq(priv); edac_mc_del_mc(&pdev->dev); - edac_mc_free(mci); + + snps_mc_free(mci); return 0; }