From patchwork Thu Oct 8 09:26:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 11822523 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 1D0376CA for ; Thu, 8 Oct 2020 09:32:13 +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 CF6202168B for ; Thu, 8 Oct 2020 09:32:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="WImL035A" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CF6202168B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.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:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version: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=gsGQnUvo8YIvc9gal1Gm2gCKg8R6ZgP81DbdVzD0Xao=; b=WImL035A/lmq5FYwryWCqHW04 d364AyvcLoNibAi9bY2e2HOb12P03DkZzlGWQjSffad7pf6SVYSv7N6ES/E8mw8SUXQc1zXyI/cA4 a7u9EscuV+Vzj0XeU1EQNkJw8actErsDsfG3B6HGD7L61OZSPjXIDnoz6BGGEcPYKGKqkCe8J5Hk8 TcNQKj9IQ62yWxktYisyjooGAcaHDD2JQPp3ElumygG6Lm8JaTPrxvoRTQTIbc24l6LsjNTDss178 /HL28gHiJ0XyOr0QjCYln96KakquDPDMDszTQ8WC/7+Bsc6FnQRC7chQuHx1ysxcbPtg8jpAleN/q 0X8GUK62A==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQSG2-0001ID-DK; Thu, 08 Oct 2020 09:30:42 +0000 Received: from szxga07-in.huawei.com ([45.249.212.35] helo=huawei.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQSFq-0001C2-Gk for linux-arm-kernel@lists.infradead.org; Thu, 08 Oct 2020 09:30:33 +0000 Received: from DGGEMS404-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 4D36BE57EAAFBFC61C40; Thu, 8 Oct 2020 17:30:14 +0800 (CST) Received: from localhost.localdomain (10.69.192.58) by DGGEMS404-HUB.china.huawei.com (10.3.19.204) with Microsoft SMTP Server id 14.3.487.0; Thu, 8 Oct 2020 17:30:05 +0800 From: John Garry To: , , , , , Subject: [PATCH v2 3/4] perf/imx_ddr: Add system PMU identifier for userspace Date: Thu, 8 Oct 2020 17:26:20 +0800 Message-ID: <1602149181-237415-4-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1602149181-237415-1-git-send-email-john.garry@huawei.com> References: <1602149181-237415-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201008_053032_447203_29D7A6D8 X-CRM114-Status: GOOD ( 13.50 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [45.249.212.35 listed in list.dnswl.org] 0.0 RCVD_IN_MSPIKE_H4 RBL: Very Good reputation (+4) [45.249.212.35 listed in wl.mailspike.net] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders 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: devicetree@vger.kernel.org, irogers@google.com, John Garry , linuxarm@huawei.com, acme@kernel.org, linux-kernel@vger.kernel.org, jolsa@redhat.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Joakim Zhang The DDR Perf for i.MX8 is a system PMU whose AXI ID would different from SoC to SoC. Need expose system PMU identifier for userspace which refer to /sys/bus/event_source/devices//identifier. Reviewed-by: John Garry Signed-off-by: Joakim Zhang Signed-off-by: John Garry --- drivers/perf/fsl_imx8_ddr_perf.c | 45 +++++++++++++++++++++++++++++--- 1 file changed, 42 insertions(+), 3 deletions(-) diff --git a/drivers/perf/fsl_imx8_ddr_perf.c b/drivers/perf/fsl_imx8_ddr_perf.c index 397540a4b799..c537cd9b8142 100644 --- a/drivers/perf/fsl_imx8_ddr_perf.c +++ b/drivers/perf/fsl_imx8_ddr_perf.c @@ -50,21 +50,38 @@ static DEFINE_IDA(ddr_ida); struct fsl_ddr_devtype_data { unsigned int quirks; /* quirks needed for different DDR Perf core */ + const char *identifier; /* system PMU identifier for userspace */ }; -static const struct fsl_ddr_devtype_data imx8_devtype_data; +static const struct fsl_ddr_devtype_data imx8_devtype_data = { + .identifier = "i.MX8", +}; + +static const struct fsl_ddr_devtype_data imx8mq_devtype_data = { + .quirks = DDR_CAP_AXI_ID_FILTER, + .identifier = "i.MX8MQ", +}; + +static const struct fsl_ddr_devtype_data imx8mm_devtype_data = { + .quirks = DDR_CAP_AXI_ID_FILTER, + .identifier = "i.MX8MM", +}; -static const struct fsl_ddr_devtype_data imx8m_devtype_data = { +static const struct fsl_ddr_devtype_data imx8mn_devtype_data = { .quirks = DDR_CAP_AXI_ID_FILTER, + .identifier = "i.MX8MN", }; static const struct fsl_ddr_devtype_data imx8mp_devtype_data = { .quirks = DDR_CAP_AXI_ID_FILTER_ENHANCED, + .identifier = "i.MX8MP", }; static const struct of_device_id imx_ddr_pmu_dt_ids[] = { { .compatible = "fsl,imx8-ddr-pmu", .data = &imx8_devtype_data}, - { .compatible = "fsl,imx8m-ddr-pmu", .data = &imx8m_devtype_data}, + { .compatible = "fsl,imx8mq-ddr-pmu", .data = &imx8mq_devtype_data}, + { .compatible = "fsl,imx8mm-ddr-pmu", .data = &imx8mm_devtype_data}, + { .compatible = "fsl,imx8mn-ddr-pmu", .data = &imx8mn_devtype_data}, { .compatible = "fsl,imx8mp-ddr-pmu", .data = &imx8mp_devtype_data}, { /* sentinel */ } }; @@ -84,6 +101,27 @@ struct ddr_pmu { int id; }; +static ssize_t ddr_perf_identifier_show(struct device *dev, + struct device_attribute *attr, + char *page) +{ + struct ddr_pmu *pmu = dev_get_drvdata(dev); + + return sprintf(page, "%s\n", pmu->devtype_data->identifier); +} + +static struct device_attribute ddr_perf_identifier_attr = + __ATTR(identifier, 0444, ddr_perf_identifier_show, NULL); + +static struct attribute *ddr_perf_identifier_attrs[] = { + &ddr_perf_identifier_attr.attr, + NULL, +}; + +static struct attribute_group ddr_perf_identifier_attr_group = { + .attrs = ddr_perf_identifier_attrs, +}; + enum ddr_perf_filter_capabilities { PERF_CAP_AXI_ID_FILTER = 0, PERF_CAP_AXI_ID_FILTER_ENHANCED, @@ -237,6 +275,7 @@ static const struct attribute_group *attr_groups[] = { &ddr_perf_format_attr_group, &ddr_perf_cpumask_attr_group, &ddr_perf_filter_cap_attr_group, + &ddr_perf_identifier_attr_group, NULL, };