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=-10.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 93BA0C35280 for ; Mon, 30 Sep 2019 14:37:04 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (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 7346421855 for ; Mon, 30 Sep 2019 14:37:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7346421855 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 4A7DD19B1; Mon, 30 Sep 2019 14:37:04 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id B1F04199D for ; Mon, 30 Sep 2019 14:37:02 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from huawei.com (szxga07-in.huawei.com [45.249.212.35]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 26CCE735 for ; Mon, 30 Sep 2019 14:37:02 +0000 (UTC) Received: from DGGEMS402-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 63F89242D57370195736; Mon, 30 Sep 2019 22:36:58 +0800 (CST) Received: from localhost.localdomain (10.67.212.75) by DGGEMS402-HUB.china.huawei.com (10.3.19.202) with Microsoft SMTP Server id 14.3.439.0; Mon, 30 Sep 2019 22:36:49 +0800 From: John Garry To: , , , , , Subject: [RFC PATCH 3/6] perf/smmuv3: Retrieve parent SMMUv3 IIDR Date: Mon, 30 Sep 2019 22:33:48 +0800 Message-ID: <1569854031-237636-4-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1569854031-237636-1-git-send-email-john.garry@huawei.com> References: <1569854031-237636-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.212.75] X-CFilter-Loop: Reflected Cc: nleeder@codeaurora.org, rjw@rjwysocki.net, linux-kernel@vger.kernel.org, linuxarm@huawei.com, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, lenb@kernel.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org To support IMP DEF events per PMCG, retrieve the parent SMMUv3 IIDR. This will be used as a lookup for the IMP DEF events supported, under the assumption that a PMCG implementation has the same uniqueness as the parent SMMUv3. In this, we assume that any PMCG associated with the same SMMUv3 will have the same IMP DEF events - otherwise, some other secondary matching would need to be done. Signed-off-by: John Garry --- drivers/perf/arm_smmuv3_pmu.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/perf/arm_smmuv3_pmu.c b/drivers/perf/arm_smmuv3_pmu.c index da71c741cb46..f702898c695d 100644 --- a/drivers/perf/arm_smmuv3_pmu.c +++ b/drivers/perf/arm_smmuv3_pmu.c @@ -115,6 +115,7 @@ struct smmu_pmu { bool global_filter; u32 global_filter_span; u32 global_filter_sid; + u32 parent_iidr; }; #define to_smmu_pmu(p) (container_of(p, struct smmu_pmu, pmu)) @@ -551,6 +552,11 @@ static const struct attribute_group *smmu_pmu_attr_grps[] = { NULL }; +static const struct attribute_group **smmu_pmu_lookup_attr_groups(u32 parent_smmu_iidr) +{ + return smmu_pmu_attr_grps; +} + /* * Generic device handlers */ @@ -706,11 +712,21 @@ static int smmu_pmu_probe(struct platform_device *pdev) int irq, err; char *name; struct device *dev = &pdev->dev; + struct device *parent = dev->parent; smmu_pmu = devm_kzalloc(dev, sizeof(*smmu_pmu), GFP_KERNEL); if (!smmu_pmu) return -ENOMEM; + if (parent) { + void *parent_drvdata; + + parent_drvdata = platform_get_drvdata(to_platform_device(parent)); + if (!parent_drvdata) + return -EPROBE_DEFER; + smmu_pmu->parent_iidr = *(u32 *)parent_drvdata; + } + smmu_pmu->dev = dev; platform_set_drvdata(pdev, smmu_pmu); @@ -724,7 +740,7 @@ static int smmu_pmu_probe(struct platform_device *pdev) .start = smmu_pmu_event_start, .stop = smmu_pmu_event_stop, .read = smmu_pmu_event_read, - .attr_groups = smmu_pmu_attr_grps, + .attr_groups = smmu_pmu_lookup_attr_groups(smmu_pmu->parent_iidr), .capabilities = PERF_PMU_CAP_NO_EXCLUDE, }; -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu