From patchwork Tue Sep 29 08:54:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Diana Madalina Craciun X-Patchwork-Id: 11805311 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 BFB6E139A for ; Tue, 29 Sep 2020 08:57:21 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 6A663206B5 for ; Tue, 29 Sep 2020 08:57:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="bE3EY3Bw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6A663206B5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=oss.nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=kD3Qw62Gte/v0fLhu7gsPsREmyfDxZfNy/2IKWkoMNE=; b=bE3EY3Bw17pVblOntkqdzJMEev XXzEuNmn4JxufTaq9hJsscg3csrktc4FPNPqOrw/qgulmx2HlJMLqE5hD58Gt8Wau8ZIFnxrHB3R2 HHP2Zo7UDlddrcMq910lUK4CoeklUvX+8rtyAzqJy9hvVHBYPSeW7jsWqylDxZUSL+QuX/r6kY+x0 n69CaEpdR0ozWaSWxDLN/b13BqioGC0vIGOAZsq98VFRPhHhmDOju2ybigPXdlkq5QHxFSSq0c4Si f8QoTgXlKWnSw8db4ipXkRgo39s8gRSVdppnpGggiJYbI3F02Ta9BUHxAUUqcr7VEwxAzqeCCN4zW 2vN6ygTw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kNBRR-0003nJ-W3; Tue, 29 Sep 2020 08:56:58 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kNBPh-0003Df-AW for linux-arm-kernel@lists.infradead.org; Tue, 29 Sep 2020 08:55:14 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 837A5200264; Tue, 29 Sep 2020 10:55:08 +0200 (CEST) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 769BE201589; Tue, 29 Sep 2020 10:55:08 +0200 (CEST) Received: from fsr-ub1864-111.ea.freescale.net (fsr-ub1864-111.ea.freescale.net [10.171.82.141]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id 23D662032C; Tue, 29 Sep 2020 10:55:08 +0200 (CEST) From: Diana Craciun To: linux-kernel@vger.kernel.org, laurentiu.tudor@nxp.com Subject: [PATCH v5 09/13] bus/fsl-mc: Add a container setup function Date: Tue, 29 Sep 2020 11:54:37 +0300 Message-Id: <20200929085441.17448-10-diana.craciun@oss.nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200929085441.17448-1-diana.craciun@oss.nxp.com> References: <20200929085441.17448-1-diana.craciun@oss.nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200929_045509_563765_35347F5E X-CRM114-Status: GOOD ( 19.02 ) X-Spam-Score: -0.7 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [92.121.34.21 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gregkh@linuxfoundation.org, Diana Craciun , linux-arm-kernel@lists.infradead.org, stuyoder@gmail.com, leoyang.li@nxp.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Both DPRC driver and VFIO driver use the same initialization code for the DPRC. Introduced a new function which groups this initialization code. The function is exported and may be used by VFIO as well. Signed-off-by: Diana Craciun --- drivers/bus/fsl-mc/dprc-driver.c | 71 ++++++++++++++++++++++---------- include/linux/fsl/mc.h | 2 + 2 files changed, 51 insertions(+), 22 deletions(-) diff --git a/drivers/bus/fsl-mc/dprc-driver.c b/drivers/bus/fsl-mc/dprc-driver.c index 516119c8121a..9e4088209cfe 100644 --- a/drivers/bus/fsl-mc/dprc-driver.c +++ b/drivers/bus/fsl-mc/dprc-driver.c @@ -588,25 +588,24 @@ static int dprc_setup_irq(struct fsl_mc_device *mc_dev) } /** - * dprc_probe - callback invoked when a DPRC is being bound to this driver + * dprc_setup - opens and creates a mc_io for DPRC * * @mc_dev: Pointer to fsl-mc device representing a DPRC * * It opens the physical DPRC in the MC. - * It scans the DPRC to discover the MC objects contained in it. - * It creates the interrupt pool for the MC bus associated with the DPRC. - * It configures the interrupts for the DPRC device itself. + * It configures the DPRC portal used to communicate with MC */ -static int dprc_probe(struct fsl_mc_device *mc_dev) + +int dprc_setup(struct fsl_mc_device *mc_dev) { - int error; - size_t region_size; struct device *parent_dev = mc_dev->dev.parent; struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev); + struct irq_domain *mc_msi_domain; bool mc_io_created = false; bool msi_domain_set = false; u16 major_ver, minor_ver; - struct irq_domain *mc_msi_domain; + size_t region_size; + int error; if (!is_fsl_mc_bus_dprc(mc_dev)) return -EINVAL; @@ -681,35 +680,63 @@ static int dprc_probe(struct fsl_mc_device *mc_dev) goto error_cleanup_open; } + return 0; + +error_cleanup_open: + (void)dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle); + +error_cleanup_msi_domain: + if (msi_domain_set) + dev_set_msi_domain(&mc_dev->dev, NULL); + + if (mc_io_created) { + fsl_destroy_mc_io(mc_dev->mc_io); + mc_dev->mc_io = NULL; + } + + return error; +} +EXPORT_SYMBOL_GPL(dprc_setup); + +/** + * dprc_probe - callback invoked when a DPRC is being bound to this driver + * + * @mc_dev: Pointer to fsl-mc device representing a DPRC + * + * It opens the physical DPRC in the MC. + * It scans the DPRC to discover the MC objects contained in it. + * It creates the interrupt pool for the MC bus associated with the DPRC. + * It configures the interrupts for the DPRC device itself. + */ +static int dprc_probe(struct fsl_mc_device *mc_dev) +{ + int error; + + error = dprc_setup(mc_dev); + if (error < 0) + return error; + /* * Discover MC objects in DPRC object: */ error = dprc_scan_container(mc_dev, true); if (error < 0) - goto error_cleanup_open; + goto dprc_cleanup; /* * Configure interrupt for the DPRC object associated with this MC bus: */ error = dprc_setup_irq(mc_dev); if (error < 0) - goto error_cleanup_open; + goto scan_cleanup; dev_info(&mc_dev->dev, "DPRC device bound to driver"); return 0; -error_cleanup_open: - (void)dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle); - -error_cleanup_msi_domain: - if (msi_domain_set) - dev_set_msi_domain(&mc_dev->dev, NULL); - - if (mc_io_created) { - fsl_destroy_mc_io(mc_dev->mc_io); - mc_dev->mc_io = NULL; - } - +scan_cleanup: + device_for_each_child(&mc_dev->dev, NULL, __fsl_mc_device_remove); +dprc_cleanup: + dprc_cleanup(mc_dev); return error; } diff --git a/include/linux/fsl/mc.h b/include/linux/fsl/mc.h index 5519a510b8c9..e99d181ee4cd 100644 --- a/include/linux/fsl/mc.h +++ b/include/linux/fsl/mc.h @@ -540,6 +540,8 @@ void dprc_remove_devices(struct fsl_mc_device *mc_bus_dev, int dprc_cleanup(struct fsl_mc_device *mc_dev); +int dprc_setup(struct fsl_mc_device *mc_dev); + /* * Data Path Buffer Pool (DPBP) API * Contains initialization APIs and runtime control APIs for DPBP