From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 79DEEC433E2 for ; Tue, 15 Sep 2020 10:50:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 11F53206B7 for ; Tue, 15 Sep 2020 10:50:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="dPoF6dmt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726331AbgIOKuv (ORCPT ); Tue, 15 Sep 2020 06:50:51 -0400 Received: from mail29.static.mailgun.info ([104.130.122.29]:13202 "EHLO mail29.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726290AbgIOKno (ORCPT ); Tue, 15 Sep 2020 06:43:44 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1600166623; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=HUVHYi+gpgmemciLzKjuXqFBb5jZeT5vLoGGTbkyiDk=; b=dPoF6dmtCILDeqmTr0YNIe+BcA4CwN1VaXz7nmkY2iV//fNME7EYoZVzw1362HkesGvh4Fj+ zh7V6RQcOTWPRC7q045sfOF2ztWXgX9TVKb3zLrN6xeLegjsyGuTPgEwk5SzqToIdgr/IxUq FkPJRe/kvfbxVNw/xAXzOBYXFWE= X-Mailgun-Sending-Ip: 104.130.122.29 X-Mailgun-Sid: WyI0MWYwYSIsICJsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n05.prod.us-west-2.postgun.com with SMTP id 5f609ac1698ee477d157fcd0 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Tue, 15 Sep 2020 10:43:13 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id B2435C43382; Tue, 15 Sep 2020 10:43:13 +0000 (UTC) Received: from tingweiz-gv.qualcomm.com (unknown [180.166.53.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: tingwei) by smtp.codeaurora.org (Postfix) with ESMTPSA id D5625C433C8; Tue, 15 Sep 2020 10:43:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org D5625C433C8 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=tingwei@codeaurora.org From: Tingwei Zhang To: Mathieu Poirier , Suzuki K Poulose , Alexander Shishkin , Mike Leach Cc: Tingwei Zhang , Greg Kroah-Hartman , Leo Yan , Randy Dunlap , Russell King , Kim Phillips , Mian Yousaf Kaukab , tsoni@codeaurora.org, Sai Prakash Ranjan , Mao Jinlong , coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel test robot Subject: [PATCH v11 16/24] coresight: cti: add function to register cti associate ops Date: Tue, 15 Sep 2020 18:41:08 +0800 Message-Id: <20200915104116.16789-17-tingwei@codeaurora.org> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20200915104116.16789-1-tingwei@codeaurora.org> References: <20200915104116.16789-1-tingwei@codeaurora.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add static cti_assoc_ops to coresight core driver. Let cti driver register the add_assoc and remove_assoc call back. Avoid coresight core driver to depend on cti driver. Signed-off-by: Tingwei Zhang Tested-by: Mike Leach Reported-by: kernel test robot Reviewed-by: Mathieu Poirier --- drivers/hwtracing/coresight/coresight-cti.c | 36 +++++++++++++++++--- drivers/hwtracing/coresight/coresight-priv.h | 14 ++++---- drivers/hwtracing/coresight/coresight.c | 21 ++++++++++-- 3 files changed, 55 insertions(+), 16 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-cti.c b/drivers/hwtracing/coresight/coresight-cti.c index 47f3c9abae30..5003d1f59af0 100644 --- a/drivers/hwtracing/coresight/coresight-cti.c +++ b/drivers/hwtracing/coresight/coresight-cti.c @@ -539,7 +539,7 @@ cti_match_fixup_csdev(struct cti_device *ctidev, const char *node_name, * This will set the association if CTI declared before the CS device. * (called from coresight_register() with coresight_mutex locked). */ -void cti_add_assoc_to_csdev(struct coresight_device *csdev) +static void cti_add_assoc_to_csdev(struct coresight_device *csdev) { struct cti_drvdata *ect_item; struct cti_device *ctidev; @@ -572,13 +572,12 @@ void cti_add_assoc_to_csdev(struct coresight_device *csdev) cti_add_done: mutex_unlock(&ect_mutex); } -EXPORT_SYMBOL_GPL(cti_add_assoc_to_csdev); /* * Removing the associated devices is easier. * A CTI will not have a value for csdev->ect_dev. */ -void cti_remove_assoc_from_csdev(struct coresight_device *csdev) +static void cti_remove_assoc_from_csdev(struct coresight_device *csdev) { struct cti_drvdata *ctidrv; struct cti_trig_con *tc; @@ -599,7 +598,15 @@ void cti_remove_assoc_from_csdev(struct coresight_device *csdev) } mutex_unlock(&ect_mutex); } -EXPORT_SYMBOL_GPL(cti_remove_assoc_from_csdev); + +/* + * Operations to add and remove associated CTI. + * Register to coresight core driver as call back function. + */ +static struct cti_assoc_op cti_assoc_ops = { + .add = cti_add_assoc_to_csdev, + .remove = cti_remove_assoc_from_csdev +}; /* * Update the cross references where the associated device was found @@ -956,4 +963,23 @@ static struct amba_driver cti_driver = { .probe = cti_probe, .id_table = cti_ids, }; -builtin_amba_driver(cti_driver); + +static int __init cti_init(void) +{ + int ret; + + ret = amba_driver_register(&cti_driver); + if (ret) + pr_info("Error registering cti driver\n"); + coresight_set_cti_ops(&cti_assoc_ops); + return ret; +} + +static void __exit cti_exit(void) +{ + coresight_remove_cti_ops(); + amba_driver_unregister(&cti_driver); +} + +module_init(cti_init); +module_exit(cti_exit); diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index d638c7d48815..65a29293b6cb 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -173,15 +173,13 @@ static inline int etm_readl_cp14(u32 off, unsigned int *val) { return 0; } static inline int etm_writel_cp14(u32 off, u32 val) { return 0; } #endif -#ifdef CONFIG_CORESIGHT_CTI -extern void cti_add_assoc_to_csdev(struct coresight_device *csdev); -extern void cti_remove_assoc_from_csdev(struct coresight_device *csdev); +struct cti_assoc_op { + void (*add)(struct coresight_device *csdev); + void (*remove)(struct coresight_device *csdev); +}; -#else -static inline void cti_add_assoc_to_csdev(struct coresight_device *csdev) {} -static inline void -cti_remove_assoc_from_csdev(struct coresight_device *csdev) {} -#endif +extern void coresight_set_cti_ops(const struct cti_assoc_op *cti_op); +extern void coresight_remove_cti_ops(void); /* * Macros and inline functions to handle CoreSight UCI data and driver diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c index 4faa4aa3964d..4f4485b17458 100644 --- a/drivers/hwtracing/coresight/coresight.c +++ b/drivers/hwtracing/coresight/coresight.c @@ -56,6 +56,20 @@ static struct list_head *stm_path; const u32 coresight_barrier_pkt[4] = {0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fffffff}; EXPORT_SYMBOL_GPL(coresight_barrier_pkt); +static const struct cti_assoc_op *cti_assoc_ops; + +void coresight_set_cti_ops(const struct cti_assoc_op *cti_op) +{ + cti_assoc_ops = cti_op; +} +EXPORT_SYMBOL_GPL(coresight_set_cti_ops); + +void coresight_remove_cti_ops(void) +{ + cti_assoc_ops = NULL; +} +EXPORT_SYMBOL_GPL(coresight_remove_cti_ops); + static int coresight_id_match(struct device *dev, void *data) { int trace_id, i_trace_id; @@ -1232,7 +1246,8 @@ static void coresight_device_release(struct device *dev) { struct coresight_device *csdev = to_coresight_device(dev); - cti_remove_assoc_from_csdev(csdev); + if (cti_assoc_ops && cti_assoc_ops->remove) + cti_assoc_ops->remove(csdev); fwnode_handle_put(csdev->dev.fwnode); kfree(csdev->refcnt); kfree(csdev); @@ -1543,8 +1558,8 @@ struct coresight_device *coresight_register(struct coresight_desc *desc) ret = coresight_fixup_device_conns(csdev); if (!ret) ret = coresight_fixup_orphan_conns(csdev); - if (!ret) - cti_add_assoc_to_csdev(csdev); + if (!ret && cti_assoc_ops && cti_assoc_ops->add) + cti_assoc_ops->add(csdev); mutex_unlock(&coresight_mutex); if (ret) { -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project