From patchwork Wed Mar 8 17:38:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 13166285 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 27B0BC64EC4 for ; Wed, 8 Mar 2023 17:40:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ZQozqhNLgCMRvfmpGIAPQaHSX7t7wOenQ+XDn/wIkYg=; b=zNP9aKxrTpADR0 eZT4bTj6OYWw52UBctpAvdYv5vt/EliEJlvPbulBTwoqVrsi+KNiv9OXa3KOUPjvrz2v3QWV0zH+M vj3x5Pk/e7mrWEOitxFE9EB6kUr3bFXoJO9i3g4U3kI9ATUw759/FBU7gU+0mzC6A7P0uhkzwpZoD UZyhkDrICo8zmGm+76+tcPisF1nKxVGu5NxPlzziZsz8CmdcUHjM1Pa8ttRau7peI56nHlLYYr974 csd09i3b4WpePtCamGwGuciNo2AKt8P5agaX8n9dhLMktfv29G11EYuZY4gk/ldaAIY5qygaejfVs 5bLdca9jtZKOrFL/x2tw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZxl7-006D82-C7; Wed, 08 Mar 2023 17:39:25 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZxl1-006D5g-0m for linux-arm-kernel@lists.infradead.org; Wed, 08 Mar 2023 17:39:21 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3618E106F; Wed, 8 Mar 2023 09:39:58 -0800 (PST) Received: from e127643.arm.com (unknown [10.57.48.148]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 3C1E03F67D; Wed, 8 Mar 2023 09:39:13 -0800 (PST) From: James Clark To: coresight@lists.linaro.org Cc: James Clark , Mathieu Poirier , Suzuki K Poulose , Mike Leach , Leo Yan , Alexander Shishkin , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/8] coresight: Use enum type for cs_mode wherever possible Date: Wed, 8 Mar 2023 17:38:55 +0000 Message-Id: <20230308173904.3449231-2-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230308173904.3449231-1-james.clark@arm.com> References: <20230308173904.3449231-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230308_093919_200532_D9D68950 X-CRM114-Status: GOOD ( 17.42 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org mode is stored as a local_t, but it is also passed around a lot as a plain u32, so use the correct type wherever local_t isn't currently used. This helps a little bit with readability. Signed-off-by: James Clark --- drivers/hwtracing/coresight/coresight-core.c | 7 ++++--- drivers/hwtracing/coresight/coresight-etb10.c | 3 ++- drivers/hwtracing/coresight/coresight-etm3x-core.c | 6 +++--- drivers/hwtracing/coresight/coresight-etm4x-core.c | 6 +++--- drivers/hwtracing/coresight/coresight-priv.h | 9 ++------- drivers/hwtracing/coresight/coresight-stm.c | 6 +++--- drivers/hwtracing/coresight/coresight-tmc-etf.c | 2 +- drivers/hwtracing/coresight/coresight-tmc-etr.c | 7 +++---- drivers/hwtracing/coresight/coresight-tpdm.c | 4 ++-- drivers/hwtracing/coresight/coresight-tpiu.c | 3 ++- drivers/hwtracing/coresight/coresight-trbe.c | 3 ++- drivers/hwtracing/coresight/ultrasoc-smb.c | 3 ++- drivers/hwtracing/coresight/ultrasoc-smb.h | 2 +- include/linux/coresight.h | 13 ++++++++++--- 14 files changed, 40 insertions(+), 34 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index d3bf82c0de1d..e3b63fd52b9c 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -308,7 +308,7 @@ void coresight_set_assoc_ectdev_mutex(struct coresight_device *csdev, EXPORT_SYMBOL_GPL(coresight_set_assoc_ectdev_mutex); static int coresight_enable_sink(struct coresight_device *csdev, - u32 mode, void *data) + enum cs_mode mode, void *data) { int ret; @@ -416,7 +416,8 @@ static void coresight_disable_link(struct coresight_device *csdev, csdev->enable = false; } -static int coresight_enable_source(struct coresight_device *csdev, u32 mode) +static int coresight_enable_source(struct coresight_device *csdev, + enum cs_mode mode) { int ret; @@ -516,7 +517,7 @@ void coresight_disable_path(struct list_head *path) } EXPORT_SYMBOL_GPL(coresight_disable_path); -int coresight_enable_path(struct list_head *path, u32 mode, void *sink_data) +int coresight_enable_path(struct list_head *path, enum cs_mode mode, void *sink_data) { int ret = 0; diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c index 8aa6e4f83e42..eb99c445015a 100644 --- a/drivers/hwtracing/coresight/coresight-etb10.c +++ b/drivers/hwtracing/coresight/coresight-etb10.c @@ -225,7 +225,8 @@ static int etb_enable_perf(struct coresight_device *csdev, void *data) return ret; } -static int etb_enable(struct coresight_device *csdev, u32 mode, void *data) +static int etb_enable(struct coresight_device *csdev, enum cs_mode mode, + void *data) { int ret; diff --git a/drivers/hwtracing/coresight/coresight-etm3x-core.c b/drivers/hwtracing/coresight/coresight-etm3x-core.c index afc57195ee52..116a91d90ac2 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm3x-core.c @@ -552,8 +552,8 @@ static int etm_enable_sysfs(struct coresight_device *csdev) return ret; } -static int etm_enable(struct coresight_device *csdev, - struct perf_event *event, u32 mode) +static int etm_enable(struct coresight_device *csdev, struct perf_event *event, + enum cs_mode mode) { int ret; u32 val; @@ -671,7 +671,7 @@ static void etm_disable_sysfs(struct coresight_device *csdev) static void etm_disable(struct coresight_device *csdev, struct perf_event *event) { - u32 mode; + enum cs_mode mode; struct etm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); /* diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index 1ea8f173cca0..2ff4c42ea688 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -822,8 +822,8 @@ static int etm4_enable_sysfs(struct coresight_device *csdev) return ret; } -static int etm4_enable(struct coresight_device *csdev, - struct perf_event *event, u32 mode) +static int etm4_enable(struct coresight_device *csdev, struct perf_event *event, + enum cs_mode mode) { int ret; u32 val; @@ -989,7 +989,7 @@ static void etm4_disable_sysfs(struct coresight_device *csdev) static void etm4_disable(struct coresight_device *csdev, struct perf_event *event) { - u32 mode; + enum cs_mode mode; struct etmv4_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); /* diff --git a/drivers/hwtracing/coresight/coresight-priv.h b/drivers/hwtracing/coresight/coresight-priv.h index 595ce5862056..788ff19c60f6 100644 --- a/drivers/hwtracing/coresight/coresight-priv.h +++ b/drivers/hwtracing/coresight/coresight-priv.h @@ -82,12 +82,6 @@ enum etm_addr_type { ETM_ADDR_TYPE_STOP, }; -enum cs_mode { - CS_MODE_DISABLED, - CS_MODE_SYSFS, - CS_MODE_PERF, -}; - /** * struct cs_buffer - keep track of a recording session' specifics * @cur: index of the current buffer @@ -133,7 +127,8 @@ static inline void CS_UNLOCK(void __iomem *addr) } void coresight_disable_path(struct list_head *path); -int coresight_enable_path(struct list_head *path, u32 mode, void *sink_data); +int coresight_enable_path(struct list_head *path, enum cs_mode mode, + void *sink_data); struct coresight_device *coresight_get_sink(struct list_head *path); struct coresight_device * coresight_get_enabled_sink(struct coresight_device *source); diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c index 66a614c5492c..a1c27c901ad1 100644 --- a/drivers/hwtracing/coresight/coresight-stm.c +++ b/drivers/hwtracing/coresight/coresight-stm.c @@ -119,7 +119,7 @@ DEFINE_CORESIGHT_DEVLIST(stm_devs, "stm"); * @spinlock: only one at a time pls. * @chs: the channels accociated to this STM. * @stm: structure associated to the generic STM interface. - * @mode: this tracer's mode, i.e sysFS, or disabled. + * @mode: this tracer's mode (enum cs_mode), i.e sysFS, or disabled. * @traceid: value of the current ID for this component. * @write_bytes: Maximus bytes this STM can write at a time. * @stmsper: settings for register STMSPER. @@ -192,8 +192,8 @@ static void stm_enable_hw(struct stm_drvdata *drvdata) CS_LOCK(drvdata->base); } -static int stm_enable(struct coresight_device *csdev, - struct perf_event *event, u32 mode) +static int stm_enable(struct coresight_device *csdev, struct perf_event *event, + enum cs_mode mode) { u32 val; struct stm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); diff --git a/drivers/hwtracing/coresight/coresight-tmc-etf.c b/drivers/hwtracing/coresight/coresight-tmc-etf.c index 0ab1f73c2d06..14d3c1472455 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etf.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etf.c @@ -302,7 +302,7 @@ static int tmc_enable_etf_sink_perf(struct coresight_device *csdev, void *data) } static int tmc_enable_etf_sink(struct coresight_device *csdev, - u32 mode, void *data) + enum cs_mode mode, void *data) { int ret; diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index 918d461fcf4a..ed589cfff1b5 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -1666,17 +1666,16 @@ static int tmc_enable_etr_sink_perf(struct coresight_device *csdev, void *data) } static int tmc_enable_etr_sink(struct coresight_device *csdev, - u32 mode, void *data) + enum cs_mode mode, void *data) { switch (mode) { case CS_MODE_SYSFS: return tmc_enable_etr_sink_sysfs(csdev); case CS_MODE_PERF: return tmc_enable_etr_sink_perf(csdev, data); + default: + return -EINVAL; } - - /* We shouldn't be here */ - return -EINVAL; } static int tmc_disable_etr_sink(struct coresight_device *csdev) diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index 9479a5e8c672..f4854af0431e 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -42,8 +42,8 @@ static void __tpdm_enable(struct tpdm_drvdata *drvdata) CS_LOCK(drvdata->base); } -static int tpdm_enable(struct coresight_device *csdev, - struct perf_event *event, u32 mode) +static int tpdm_enable(struct coresight_device *csdev, struct perf_event *event, + enum cs_mode mode) { struct tpdm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c index 34d37abd2c8d..b0179f761c98 100644 --- a/drivers/hwtracing/coresight/coresight-tpiu.c +++ b/drivers/hwtracing/coresight/coresight-tpiu.c @@ -69,7 +69,8 @@ static void tpiu_enable_hw(struct csdev_access *csa) CS_LOCK(csa->base); } -static int tpiu_enable(struct coresight_device *csdev, u32 mode, void *__unused) +static int tpiu_enable(struct coresight_device *csdev, enum cs_mode mode, + void *__unused) { tpiu_enable_hw(&csdev->access); atomic_inc(csdev->refcnt); diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c index 1fc4fd79a1c6..5406e338c280 100644 --- a/drivers/hwtracing/coresight/coresight-trbe.c +++ b/drivers/hwtracing/coresight/coresight-trbe.c @@ -1005,7 +1005,8 @@ static int __arm_trbe_enable(struct trbe_buf *buf, return ret; } -static int arm_trbe_enable(struct coresight_device *csdev, u32 mode, void *data) +static int arm_trbe_enable(struct coresight_device *csdev, enum cs_mode mode, + void *data) { struct trbe_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); struct trbe_cpudata *cpudata = dev_get_drvdata(&csdev->dev); diff --git a/drivers/hwtracing/coresight/ultrasoc-smb.c b/drivers/hwtracing/coresight/ultrasoc-smb.c index b317342c7ce5..a2ced0b3c3cd 100644 --- a/drivers/hwtracing/coresight/ultrasoc-smb.c +++ b/drivers/hwtracing/coresight/ultrasoc-smb.c @@ -256,7 +256,8 @@ static int smb_enable_perf(struct coresight_device *csdev, void *data) return 0; } -static int smb_enable(struct coresight_device *csdev, u32 mode, void *data) +static int smb_enable(struct coresight_device *csdev, enum cs_mode mode, + void *data) { struct smb_drv_data *drvdata = dev_get_drvdata(csdev->dev.parent); int ret = 0; diff --git a/drivers/hwtracing/coresight/ultrasoc-smb.h b/drivers/hwtracing/coresight/ultrasoc-smb.h index 7dfbe42e37a0..d2e14e8d2c8a 100644 --- a/drivers/hwtracing/coresight/ultrasoc-smb.h +++ b/drivers/hwtracing/coresight/ultrasoc-smb.h @@ -119,7 +119,7 @@ struct smb_drv_data { struct mutex mutex; bool reading; pid_t pid; - u32 mode; + enum cs_mode mode; }; #endif diff --git a/include/linux/coresight.h b/include/linux/coresight.h index f19a47b9bb5a..1f878e8ed8c4 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -272,6 +272,12 @@ static struct coresight_dev_list (var) = { \ #define to_coresight_device(d) container_of(d, struct coresight_device, dev) +enum cs_mode { + CS_MODE_DISABLED, + CS_MODE_SYSFS, + CS_MODE_PERF, +}; + #define source_ops(csdev) csdev->ops->source_ops #define sink_ops(csdev) csdev->ops->sink_ops #define link_ops(csdev) csdev->ops->link_ops @@ -288,7 +294,8 @@ static struct coresight_dev_list (var) = { \ * @update_buffer: update buffer pointers after a trace session. */ struct coresight_ops_sink { - int (*enable)(struct coresight_device *csdev, u32 mode, void *data); + int (*enable)(struct coresight_device *csdev, enum cs_mode mode, + void *data); int (*disable)(struct coresight_device *csdev); void *(*alloc_buffer)(struct coresight_device *csdev, struct perf_event *event, void **pages, @@ -320,8 +327,8 @@ struct coresight_ops_link { */ struct coresight_ops_source { int (*cpu_id)(struct coresight_device *csdev); - int (*enable)(struct coresight_device *csdev, - struct perf_event *event, u32 mode); + int (*enable)(struct coresight_device *csdev, struct perf_event *event, + enum cs_mode mode); void (*disable)(struct coresight_device *csdev, struct perf_event *event); }; From patchwork Wed Mar 8 17:38:56 2023 Content-Type: text/plain; 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Wed, 8 Mar 2023 09:39:16 -0800 (PST) From: James Clark To: coresight@lists.linaro.org Cc: James Clark , Mathieu Poirier , Suzuki K Poulose , Mike Leach , Leo Yan , Alexander Shishkin , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/8] coresight: Change name of pdata->conns Date: Wed, 8 Mar 2023 17:38:56 +0000 Message-Id: <20230308173904.3449231-3-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230308173904.3449231-1-james.clark@arm.com> References: <20230308173904.3449231-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230308_093920_523027_15103E85 X-CRM114-Status: GOOD ( 16.46 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org conns is actually for output connections. Change the name to make it clearer and so that we can add input connections later. No functional changes. Signed-off-by: James Clark --- drivers/hwtracing/coresight/coresight-core.c | 26 +++++++++---------- .../hwtracing/coresight/coresight-platform.c | 12 ++++----- .../hwtracing/coresight/coresight-tmc-etr.c | 2 +- include/linux/coresight.h | 2 +- 4 files changed, 21 insertions(+), 21 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index e3b63fd52b9c..c0eda7407fb8 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -119,7 +119,7 @@ static int coresight_find_link_inport(struct coresight_device *csdev, struct coresight_connection *conn; for (i = 0; i < parent->pdata->nr_outport; i++) { - conn = &parent->pdata->conns[i]; + conn = &parent->pdata->out_conns[i]; if (conn->child_dev == csdev) return conn->child_port; } @@ -137,7 +137,7 @@ static int coresight_find_link_outport(struct coresight_device *csdev, struct coresight_connection *conn; for (i = 0; i < csdev->pdata->nr_outport; i++) { - conn = &csdev->pdata->conns[i]; + conn = &csdev->pdata->out_conns[i]; if (conn->child_dev == child) return conn->outport; } @@ -606,7 +606,7 @@ coresight_find_enabled_sink(struct coresight_device *csdev) for (i = 0; i < csdev->pdata->nr_outport; i++) { struct coresight_device *child_dev; - child_dev = csdev->pdata->conns[i].child_dev; + child_dev = csdev->pdata->out_conns[i].child_dev; if (child_dev) sink = coresight_find_enabled_sink(child_dev); if (sink) @@ -722,7 +722,7 @@ static int coresight_grab_device(struct coresight_device *csdev) for (i = 0; i < csdev->pdata->nr_outport; i++) { struct coresight_device *child; - child = csdev->pdata->conns[i].child_dev; + child = csdev->pdata->out_conns[i].child_dev; if (child && child->type == CORESIGHT_DEV_TYPE_HELPER) if (!coresight_get_ref(child)) goto err; @@ -733,7 +733,7 @@ static int coresight_grab_device(struct coresight_device *csdev) for (i--; i >= 0; i--) { struct coresight_device *child; - child = csdev->pdata->conns[i].child_dev; + child = csdev->pdata->out_conns[i].child_dev; if (child && child->type == CORESIGHT_DEV_TYPE_HELPER) coresight_put_ref(child); } @@ -752,7 +752,7 @@ static void coresight_drop_device(struct coresight_device *csdev) for (i = 0; i < csdev->pdata->nr_outport; i++) { struct coresight_device *child; - child = csdev->pdata->conns[i].child_dev; + child = csdev->pdata->out_conns[i].child_dev; if (child && child->type == CORESIGHT_DEV_TYPE_HELPER) coresight_put_ref(child); } @@ -794,7 +794,7 @@ static int _coresight_build_path(struct coresight_device *csdev, for (i = 0; i < csdev->pdata->nr_outport; i++) { struct coresight_device *child_dev; - child_dev = csdev->pdata->conns[i].child_dev; + child_dev = csdev->pdata->out_conns[i].child_dev; if (child_dev && _coresight_build_path(child_dev, sink, path) == 0) { found = true; @@ -964,7 +964,7 @@ coresight_find_sink(struct coresight_device *csdev, int *depth) struct coresight_device *child_dev, *sink = NULL; int child_depth = curr_depth; - child_dev = csdev->pdata->conns[i].child_dev; + child_dev = csdev->pdata->out_conns[i].child_dev; if (child_dev) sink = coresight_find_sink(child_dev, &child_depth); @@ -1334,7 +1334,7 @@ static int coresight_orphan_match(struct device *dev, void *data) * an orphan connection whose name matches @csdev, link it. */ for (i = 0; i < i_csdev->pdata->nr_outport; i++) { - conn = &i_csdev->pdata->conns[i]; + conn = &i_csdev->pdata->out_conns[i]; /* Skip the port if FW doesn't describe it */ if (!conn->child_fwnode) @@ -1375,7 +1375,7 @@ static int coresight_fixup_device_conns(struct coresight_device *csdev) int i, ret = 0; for (i = 0; i < csdev->pdata->nr_outport; i++) { - struct coresight_connection *conn = &csdev->pdata->conns[i]; + struct coresight_connection *conn = &csdev->pdata->out_conns[i]; if (!conn->child_fwnode) continue; @@ -1412,7 +1412,7 @@ static int coresight_remove_match(struct device *dev, void *data) * a connection whose name matches @csdev, remove it. */ for (i = 0; i < iterator->pdata->nr_outport; i++) { - conn = &iterator->pdata->conns[i]; + conn = &iterator->pdata->out_conns[i]; if (conn->child_dev == NULL || conn->child_fwnode == NULL) continue; @@ -1548,7 +1548,7 @@ void coresight_release_platform_data(struct coresight_device *csdev, struct coresight_platform_data *pdata) { int i; - struct coresight_connection *conns = pdata->conns; + struct coresight_connection *conns = pdata->out_conns; for (i = 0; i < pdata->nr_outport; i++) { /* If we have made the links, remove them now */ @@ -1560,7 +1560,7 @@ void coresight_release_platform_data(struct coresight_device *csdev, */ if (conns[i].child_fwnode) { fwnode_handle_put(conns[i].child_fwnode); - pdata->conns[i].child_fwnode = NULL; + pdata->out_conns[i].child_fwnode = NULL; } } if (csdev) diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c index 475899714104..5085525a32bb 100644 --- a/drivers/hwtracing/coresight/coresight-platform.c +++ b/drivers/hwtracing/coresight/coresight-platform.c @@ -27,9 +27,9 @@ static int coresight_alloc_conns(struct device *dev, struct coresight_platform_data *pdata) { if (pdata->nr_outport) { - pdata->conns = devm_kcalloc(dev, pdata->nr_outport, - sizeof(*pdata->conns), GFP_KERNEL); - if (!pdata->conns) + pdata->out_conns = devm_kcalloc(dev, pdata->nr_outport, + sizeof(*pdata->out_conns), GFP_KERNEL); + if (!pdata->out_conns) return -ENOMEM; } @@ -251,7 +251,7 @@ static int of_coresight_parse_endpoint(struct device *dev, break; } - conn = &pdata->conns[endpoint.port]; + conn = &pdata->out_conns[endpoint.port]; if (conn->child_fwnode) { dev_warn(dev, "Duplicate output port %d\n", endpoint.port); @@ -744,8 +744,8 @@ static int acpi_coresight_parse_graph(struct acpi_device *adev, int port = conns[i].outport; /* Duplicate output port */ - WARN_ON(pdata->conns[port].child_fwnode); - pdata->conns[port] = conns[i]; + WARN_ON(pdata->out_conns[port].child_fwnode); + pdata->out_conns[port] = conns[i]; } devm_kfree(&adev->dev, conns); diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index ed589cfff1b5..86d4a08aa833 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -782,7 +782,7 @@ tmc_etr_get_catu_device(struct tmc_drvdata *drvdata) return NULL; for (i = 0; i < etr->pdata->nr_outport; i++) { - tmp = etr->pdata->conns[i].child_dev; + tmp = etr->pdata->out_conns[i].child_dev; if (tmp && coresight_is_catu_device(tmp)) return tmp; } diff --git a/include/linux/coresight.h b/include/linux/coresight.h index 1f878e8ed8c4..322d7273e122 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -109,7 +109,7 @@ union coresight_dev_subtype { struct coresight_platform_data { int nr_inport; int nr_outport; - struct coresight_connection *conns; + struct coresight_connection *out_conns; }; /** From patchwork Wed Mar 8 17:38:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 13166288 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1CD66C64EC4 for ; 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Wed, 08 Mar 2023 17:39:54 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZxl9-006D8d-62 for linux-arm-kernel@lists.infradead.org; Wed, 08 Mar 2023 17:39:31 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 519F6106F; Wed, 8 Mar 2023 09:40:05 -0800 (PST) Received: from e127643.arm.com (unknown [10.57.48.148]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 571A93F67D; Wed, 8 Mar 2023 09:39:20 -0800 (PST) From: James Clark To: coresight@lists.linaro.org Cc: James Clark , Mathieu Poirier , Suzuki K Poulose , Mike Leach , Leo Yan , Alexander Shishkin , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/8] coresight: Rename nr_outports to nr_outconns Date: Wed, 8 Mar 2023 17:38:57 +0000 Message-Id: <20230308173904.3449231-4-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230308173904.3449231-1-james.clark@arm.com> References: <20230308173904.3449231-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230308_093927_361606_47F5EF4A X-CRM114-Status: GOOD ( 22.94 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Rename to avoid confusion between port number and the index in the connection array. The port number is already stored in the connection, and in a later commit the connection array will be appended to, so the length of it will no longer reflect the number of ports. No functional changes. Signed-off-by: James Clark --- drivers/hwtracing/coresight/coresight-core.c | 32 ++++++++--------- .../hwtracing/coresight/coresight-platform.c | 34 +++++++++---------- .../hwtracing/coresight/coresight-tmc-etr.c | 2 +- include/linux/coresight.h | 10 +++--- 4 files changed, 39 insertions(+), 39 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index c0eda7407fb8..617be08883da 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -118,7 +118,7 @@ static int coresight_find_link_inport(struct coresight_device *csdev, int i; struct coresight_connection *conn; - for (i = 0; i < parent->pdata->nr_outport; i++) { + for (i = 0; i < parent->pdata->nr_outconns; i++) { conn = &parent->pdata->out_conns[i]; if (conn->child_dev == csdev) return conn->child_port; @@ -136,7 +136,7 @@ static int coresight_find_link_outport(struct coresight_device *csdev, int i; struct coresight_connection *conn; - for (i = 0; i < csdev->pdata->nr_outport; i++) { + for (i = 0; i < csdev->pdata->nr_outconns; i++) { conn = &csdev->pdata->out_conns[i]; if (conn->child_dev == child) return conn->outport; @@ -397,9 +397,9 @@ static void coresight_disable_link(struct coresight_device *csdev, link_subtype = csdev->subtype.link_subtype; if (link_subtype == CORESIGHT_DEV_SUBTYPE_LINK_MERG) { - nr_conns = csdev->pdata->nr_inport; + nr_conns = csdev->pdata->nr_inconns; } else if (link_subtype == CORESIGHT_DEV_SUBTYPE_LINK_SPLIT) { - nr_conns = csdev->pdata->nr_outport; + nr_conns = csdev->pdata->nr_outconns; } else { nr_conns = 1; } @@ -603,7 +603,7 @@ coresight_find_enabled_sink(struct coresight_device *csdev) /* * Recursively explore each port found on this element. */ - for (i = 0; i < csdev->pdata->nr_outport; i++) { + for (i = 0; i < csdev->pdata->nr_outconns; i++) { struct coresight_device *child_dev; child_dev = csdev->pdata->out_conns[i].child_dev; @@ -719,7 +719,7 @@ static int coresight_grab_device(struct coresight_device *csdev) { int i; - for (i = 0; i < csdev->pdata->nr_outport; i++) { + for (i = 0; i < csdev->pdata->nr_outconns; i++) { struct coresight_device *child; child = csdev->pdata->out_conns[i].child_dev; @@ -749,7 +749,7 @@ static void coresight_drop_device(struct coresight_device *csdev) int i; coresight_put_ref(csdev); - for (i = 0; i < csdev->pdata->nr_outport; i++) { + for (i = 0; i < csdev->pdata->nr_outconns; i++) { struct coresight_device *child; child = csdev->pdata->out_conns[i].child_dev; @@ -791,7 +791,7 @@ static int _coresight_build_path(struct coresight_device *csdev, } /* Not a sink - recursively explore each port found on this element */ - for (i = 0; i < csdev->pdata->nr_outport; i++) { + for (i = 0; i < csdev->pdata->nr_outconns; i++) { struct coresight_device *child_dev; child_dev = csdev->pdata->out_conns[i].child_dev; @@ -960,7 +960,7 @@ coresight_find_sink(struct coresight_device *csdev, int *depth) * Not a sink we want - or possible child sink may be better. * recursively explore each port found on this element. */ - for (i = 0; i < csdev->pdata->nr_outport; i++) { + for (i = 0; i < csdev->pdata->nr_outconns; i++) { struct coresight_device *child_dev, *sink = NULL; int child_depth = curr_depth; @@ -1333,7 +1333,7 @@ static int coresight_orphan_match(struct device *dev, void *data) * Circle throuch all the connection of that component. If we find * an orphan connection whose name matches @csdev, link it. */ - for (i = 0; i < i_csdev->pdata->nr_outport; i++) { + for (i = 0; i < i_csdev->pdata->nr_outconns; i++) { conn = &i_csdev->pdata->out_conns[i]; /* Skip the port if FW doesn't describe it */ @@ -1374,7 +1374,7 @@ static int coresight_fixup_device_conns(struct coresight_device *csdev) { int i, ret = 0; - for (i = 0; i < csdev->pdata->nr_outport; i++) { + for (i = 0; i < csdev->pdata->nr_outconns; i++) { struct coresight_connection *conn = &csdev->pdata->out_conns[i]; if (!conn->child_fwnode) @@ -1411,7 +1411,7 @@ static int coresight_remove_match(struct device *dev, void *data) * Circle throuch all the connection of that component. If we find * a connection whose name matches @csdev, remove it. */ - for (i = 0; i < iterator->pdata->nr_outport; i++) { + for (i = 0; i < iterator->pdata->nr_outconns; i++) { conn = &iterator->pdata->out_conns[i]; if (conn->child_dev == NULL || conn->child_fwnode == NULL) @@ -1451,7 +1451,7 @@ static void coresight_remove_conns(struct coresight_device *csdev) * doesn't have at least one input port, there is no point * in searching all the devices. */ - if (csdev->pdata->nr_inport) + if (csdev->pdata->nr_inconns) bus_for_each_dev(&coresight_bustype, NULL, csdev, coresight_remove_match); } @@ -1550,7 +1550,7 @@ void coresight_release_platform_data(struct coresight_device *csdev, int i; struct coresight_connection *conns = pdata->out_conns; - for (i = 0; i < pdata->nr_outport; i++) { + for (i = 0; i < pdata->nr_outconns; i++) { /* If we have made the links, remove them now */ if (csdev && conns[i].child_dev) coresight_remove_links(csdev, &conns[i]); @@ -1587,9 +1587,9 @@ struct coresight_device *coresight_register(struct coresight_desc *desc) link_subtype = desc->subtype.link_subtype; if (link_subtype == CORESIGHT_DEV_SUBTYPE_LINK_MERG) - nr_refcnts = desc->pdata->nr_inport; + nr_refcnts = desc->pdata->nr_inconns; else if (link_subtype == CORESIGHT_DEV_SUBTYPE_LINK_SPLIT) - nr_refcnts = desc->pdata->nr_outport; + nr_refcnts = desc->pdata->nr_outconns; } refcnts = kcalloc(nr_refcnts, sizeof(*refcnts), GFP_KERNEL); diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c index 5085525a32bb..ed865e0621a9 100644 --- a/drivers/hwtracing/coresight/coresight-platform.c +++ b/drivers/hwtracing/coresight/coresight-platform.c @@ -26,8 +26,8 @@ static int coresight_alloc_conns(struct device *dev, struct coresight_platform_data *pdata) { - if (pdata->nr_outport) { - pdata->out_conns = devm_kcalloc(dev, pdata->nr_outport, + if (pdata->nr_outconns) { + pdata->out_conns = devm_kcalloc(dev, pdata->nr_outconns, sizeof(*pdata->out_conns), GFP_KERNEL); if (!pdata->out_conns) return -ENOMEM; @@ -84,7 +84,7 @@ static inline bool of_coresight_legacy_ep_is_input(struct device_node *ep) } static void of_coresight_get_ports_legacy(const struct device_node *node, - int *nr_inport, int *nr_outport) + int *nr_inconns, int *nr_outconns) { struct device_node *ep = NULL; struct of_endpoint endpoint; @@ -114,8 +114,8 @@ static void of_coresight_get_ports_legacy(const struct device_node *node, } while (ep); - *nr_inport = in; - *nr_outport = out; + *nr_inconns = in; + *nr_outconns = out; } static struct device_node *of_coresight_get_port_parent(struct device_node *ep) @@ -164,7 +164,7 @@ of_coresight_count_ports(struct device_node *port_parent) } static void of_coresight_get_ports(const struct device_node *node, - int *nr_inport, int *nr_outport) + int *nr_inconns, int *nr_outconns) { struct device_node *input_ports = NULL, *output_ports = NULL; @@ -173,16 +173,16 @@ static void of_coresight_get_ports(const struct device_node *node, if (input_ports || output_ports) { if (input_ports) { - *nr_inport = of_coresight_count_ports(input_ports); + *nr_inconns = of_coresight_count_ports(input_ports); of_node_put(input_ports); } if (output_ports) { - *nr_outport = of_coresight_count_ports(output_ports); + *nr_outconns = of_coresight_count_ports(output_ports); of_node_put(output_ports); } } else { /* Fall back to legacy DT bindings parsing */ - of_coresight_get_ports_legacy(node, nr_inport, nr_outport); + of_coresight_get_ports_legacy(node, nr_inconns, nr_outconns); } } @@ -289,10 +289,10 @@ static int of_get_coresight_platform_data(struct device *dev, struct device_node *node = dev->of_node; /* Get the number of input and output port for this component */ - of_coresight_get_ports(node, &pdata->nr_inport, &pdata->nr_outport); + of_coresight_get_ports(node, &pdata->nr_inconns, &pdata->nr_outconns); /* If there are no output connections, we are done */ - if (!pdata->nr_outport) + if (!pdata->nr_outconns) return 0; ret = coresight_alloc_conns(dev, pdata); @@ -690,7 +690,7 @@ static int acpi_coresight_parse_graph(struct acpi_device *adev, const union acpi_object *graph; struct coresight_connection *conns, *ptr; - pdata->nr_inport = pdata->nr_outport = 0; + pdata->nr_inconns = pdata->nr_outconns = 0; graph = acpi_get_coresight_graph(adev); if (!graph) return -ENOENT; @@ -718,11 +718,11 @@ static int acpi_coresight_parse_graph(struct acpi_device *adev, return dir; if (dir == ACPI_CORESIGHT_LINK_MASTER) { - if (ptr->outport >= pdata->nr_outport) - pdata->nr_outport = ptr->outport + 1; + if (ptr->outport >= pdata->nr_outconns) + pdata->nr_outconns = ptr->outport + 1; ptr++; } else { - WARN_ON(pdata->nr_inport == ptr->child_port + 1); + WARN_ON(pdata->nr_inconns == ptr->child_port + 1); /* * We do not track input port connections for a device. * However we need the highest port number described, @@ -730,8 +730,8 @@ static int acpi_coresight_parse_graph(struct acpi_device *adev, * record for an output connection. Hence, do not move * the ptr for input connections */ - if (ptr->child_port >= pdata->nr_inport) - pdata->nr_inport = ptr->child_port + 1; + if (ptr->child_port >= pdata->nr_inconns) + pdata->nr_inconns = ptr->child_port + 1; } } diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index 86d4a08aa833..4711dfa7418c 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -781,7 +781,7 @@ tmc_etr_get_catu_device(struct tmc_drvdata *drvdata) if (!IS_ENABLED(CONFIG_CORESIGHT_CATU)) return NULL; - for (i = 0; i < etr->pdata->nr_outport; i++) { + for (i = 0; i < etr->pdata->nr_outconns; i++) { tmp = etr->pdata->out_conns[i].child_dev; if (tmp && coresight_is_catu_device(tmp)) return tmp; diff --git a/include/linux/coresight.h b/include/linux/coresight.h index 322d7273e122..cdf0d1def778 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -102,13 +102,13 @@ union coresight_dev_subtype { * struct coresight_platform_data - data harvested from the firmware * specification. * - * @nr_inport: Number of elements for the input connections. - * @nr_outport: Number of elements for the output connections. - * @conns: Sparse array of nr_outport connections from this component. + * @nr_inconns: Number of elements for the input connections. + * @nr_outconns: Number of elements for the output connections. + * @conns: Sparse array of nr_outconns connections from this component. */ struct coresight_platform_data { - int nr_inport; - int nr_outport; + int nr_inconns; + int nr_outconns; struct coresight_connection *out_conns; }; From patchwork Wed Mar 8 17:38:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 13166287 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0CB05C678D5 for ; Wed, 8 Mar 2023 17:40:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=to2T0SIxKoJcy86sImeSQ+zD1P4ZmTJs09nC3KiTufE=; b=Sl292yR1WY/UGv wTfGa5AiZ4jDW9RNd1DhI014cPXWkO6MkAKxYGquFXlJ6gWA7f0uznSdEekb/rxGQKOzDvqlxD3LP b3Oz5xxV1qI8sLEYFWk+LfD+UpZ31hRR4s7XTiS7BCH7fXPjU8LWY0WYt/iULJbZqA/VzwLGTgHc+ Z/Fyf0S5rpu3haNMGl7W7wUaJB3nVCHKAPigaYvGpq2y5Pd/7Occ424fq32N6IRahD1o3yP79w6CE YwUSXyUVDuMPOGCTirS8fcSaU2t39/+JhMQrCkFE1RMFK2x7ZD0xcsyzXKAF8hp3UTECOMfIFkqoi LAMscdbaqszb/lRHa/ig==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZxlP-006DGz-Uu; Wed, 08 Mar 2023 17:39:44 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZxl9-006D8c-5R for linux-arm-kernel@lists.infradead.org; Wed, 08 Mar 2023 17:39:29 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D188D1063; Wed, 8 Mar 2023 09:40:08 -0800 (PST) Received: from e127643.arm.com (unknown [10.57.48.148]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id D882B3F67D; Wed, 8 Mar 2023 09:39:23 -0800 (PST) From: James Clark To: coresight@lists.linaro.org Cc: James Clark , Mathieu Poirier , Suzuki K Poulose , Mike Leach , Leo Yan , Alexander Shishkin , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 4/8] coresight: Dynamically add connections Date: Wed, 8 Mar 2023 17:38:58 +0000 Message-Id: <20230308173904.3449231-5-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230308173904.3449231-1-james.clark@arm.com> References: <20230308173904.3449231-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230308_093927_368437_FAE3FE62 X-CRM114-Status: GOOD ( 23.40 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a function for adding connections dynamically. This also removes the 1:1 mapping between port number and the index into the connections array. The only place this mapping was used was in the warning for duplicate output ports, which has been replaced by a search. Other uses of the port number already use the port member variable. Being able to dynamically add connections will allow other devices like CTI to re-use the connection mechanism despite not having explicit connections described in the DT. Signed-off-by: James Clark --- .../hwtracing/coresight/coresight-platform.c | 77 ++++++++++++++----- include/linux/coresight.h | 7 +- 2 files changed, 63 insertions(+), 21 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c index ed865e0621a9..8effce5937d9 100644 --- a/drivers/hwtracing/coresight/coresight-platform.c +++ b/drivers/hwtracing/coresight/coresight-platform.c @@ -27,8 +27,9 @@ static int coresight_alloc_conns(struct device *dev, struct coresight_platform_data *pdata) { if (pdata->nr_outconns) { - pdata->out_conns = devm_kcalloc(dev, pdata->nr_outconns, - sizeof(*pdata->out_conns), GFP_KERNEL); + pdata->out_conns = devm_krealloc_array( + dev, pdata->out_conns, pdata->nr_outconns, + sizeof(*pdata->out_conns), GFP_KERNEL | __GFP_ZERO); if (!pdata->out_conns) return -ENOMEM; } @@ -36,6 +37,48 @@ static int coresight_alloc_conns(struct device *dev, return 0; } +/* + * Add a connection in the first free slot, or realloc + * if there is no space. @conn's contents is copied into the new slot. + * + * If the output port is already assigned on this device, return -EINVAL + */ +int coresight_add_conn(struct device *dev, + struct coresight_platform_data *pdata, + const struct coresight_connection *conn) +{ + int ret; + struct coresight_connection *free_conn = NULL; + struct coresight_connection *i; + + /* + * Search for a free slot, and while looking for one, warn + * on any existing duplicate output port. + */ + for (i = pdata->out_conns; i < pdata->out_conns + pdata->nr_outconns; + ++i) { + if (i->child_fwnode && conn->outport != -1 && + i->outport == conn->outport) { + dev_warn(dev, "Duplicate output port %d\n", i->outport); + return -EINVAL; + } + if (!i->child_fwnode && !free_conn) + free_conn = i; + } + + if (!free_conn) { + pdata->nr_outconns++; + ret = coresight_alloc_conns(dev, pdata); + if (ret) + return ret; + free_conn = &pdata->out_conns[pdata->nr_outconns - 1]; + } + + *free_conn = *conn; + return 0; +} +EXPORT_SYMBOL_GPL(coresight_add_conn); + static struct device * coresight_find_device_by_fwnode(struct fwnode_handle *fwnode) { @@ -224,7 +267,7 @@ static int of_coresight_parse_endpoint(struct device *dev, struct device_node *rep = NULL; struct device *rdev = NULL; struct fwnode_handle *rdev_fwnode; - struct coresight_connection *conn; + struct coresight_connection conn; do { /* Parse the local port details */ @@ -251,14 +294,7 @@ static int of_coresight_parse_endpoint(struct device *dev, break; } - conn = &pdata->out_conns[endpoint.port]; - if (conn->child_fwnode) { - dev_warn(dev, "Duplicate output port %d\n", - endpoint.port); - ret = -EINVAL; - break; - } - conn->outport = endpoint.port; + conn.outport = endpoint.port; /* * Hold the refcount to the target device. This could be * released via: @@ -267,8 +303,14 @@ static int of_coresight_parse_endpoint(struct device *dev, * 2) While removing the target device via * coresight_remove_match() */ - conn->child_fwnode = fwnode_handle_get(rdev_fwnode); - conn->child_port = rendpoint.port; + conn.child_fwnode = fwnode_handle_get(rdev_fwnode); + conn.child_port = rendpoint.port; + + ret = coresight_add_conn(dev, pdata, &conn); + if (ret) { + fwnode_handle_put(conn.child_fwnode); + return ret; + } /* Connection record updated */ } while (0); @@ -741,13 +783,10 @@ static int acpi_coresight_parse_graph(struct acpi_device *adev, /* Copy the connection information to the final location */ for (i = 0; conns + i < ptr; i++) { - int port = conns[i].outport; - - /* Duplicate output port */ - WARN_ON(pdata->out_conns[port].child_fwnode); - pdata->out_conns[port] = conns[i]; + rc = coresight_add_conn(&adev->dev, pdata, &conns[i]); + if (rc) + return rc; } - devm_kfree(&adev->dev, conns); return 0; } diff --git a/include/linux/coresight.h b/include/linux/coresight.h index cdf0d1def778..62cc8e43b6cb 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -167,8 +167,8 @@ struct coresight_desc { * @outport: a connection's output port number. * @child_port: remote component's port number @output is connected to. * @chid_fwnode: remote component's fwnode handle. - * @child_dev: a @coresight_device representation of the component - connected to @outport. + * @child_dev: remote component's @coresight_device representation. Will + * be looked up and assigned using @child_fwnode * @link: Representation of the connection as a sysfs link. */ struct coresight_connection { @@ -609,5 +609,8 @@ static inline void coresight_write64(struct coresight_device *csdev, u64 val, u3 extern int coresight_get_cpu(struct device *dev); struct coresight_platform_data *coresight_get_platform_data(struct device *dev); +int coresight_add_conn(struct device *dev, + struct coresight_platform_data *pdata, + const struct coresight_connection *conn); #endif /* _LINUX_COREISGHT_H */ From patchwork Wed Mar 8 17:38:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 13166289 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 19361C678D5 for ; Wed, 8 Mar 2023 17:41:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=c7u1jBNB/SctUxR167xZSOLcAj4SCI2yaV0EIXlCbNk=; b=NgIN6Vl+7Juod3 p25HkPaaqDq8H5lycE3A2dyIcGeJstQPav1Xghwyy4Y0+6YPo/Eu1xpudpUVawOEQCNiUgvdpFi0f s2vek8mh6lKHonAUvlhdEgqZE7kYKt92POozHvfNnVZ3VAYfp9bV6JfSWJWlpsyw5E9ewqmy7QGyH tCThQbAwPdwPK2qlOVUBgJYSXXNtwpEF3RKsSofWqH1o3aS5BClnF7eTUoJck2HoFis6CrUZ5TMqp zZbc44mG8gtN+/ToR5lNAP8xKdW7KwpN/cwzpf0C+LS1oHjbJwFKha6dEN4mtcRx/x3mDGW5luP7v awoIYm4rSRBrvLcIs1OA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZxll-006DSL-Sh; Wed, 08 Mar 2023 17:40:06 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZxlB-006D8c-7p for linux-arm-kernel@lists.infradead.org; Wed, 08 Mar 2023 17:39:31 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 71227150C; Wed, 8 Mar 2023 09:40:12 -0800 (PST) Received: from e127643.arm.com (unknown [10.57.48.148]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 783263F67D; Wed, 8 Mar 2023 09:39:27 -0800 (PST) From: James Clark To: coresight@lists.linaro.org Cc: James Clark , Mathieu Poirier , Suzuki K Poulose , Mike Leach , Leo Yan , Alexander Shishkin , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 5/8] coresight: Store in-connections as well as out-connections Date: Wed, 8 Mar 2023 17:38:59 +0000 Message-Id: <20230308173904.3449231-6-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230308173904.3449231-1-james.clark@arm.com> References: <20230308173904.3449231-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230308_093929_421667_E25A6E62 X-CRM114-Status: GOOD ( 27.32 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This will allow CATU to get its associated ETR in a generic way where currently the enable path has some hard coded searches which avoid the need to store input connections. Signed-off-by: James Clark --- drivers/hwtracing/coresight/coresight-core.c | 56 +++++++++++++++-- .../hwtracing/coresight/coresight-platform.c | 61 ++++++++++++++++--- drivers/hwtracing/coresight/coresight-sysfs.c | 1 - include/linux/coresight.h | 33 +++++++++- 4 files changed, 136 insertions(+), 15 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index 617be08883da..fe9fb11ab283 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -59,6 +59,7 @@ const u32 coresight_barrier_pkt[4] = {0x7fffffff, 0x7fffffff, 0x7fffffff, 0x7fff EXPORT_SYMBOL_GPL(coresight_barrier_pkt); static const struct cti_assoc_op *cti_assoc_ops; +static int coresight_fixup_inputs(struct coresight_device *csdev); ssize_t coresight_simple_show_pair(struct device *_dev, struct device_attribute *attr, char *buf) @@ -1369,6 +1370,35 @@ static int coresight_fixup_orphan_conns(struct coresight_device *csdev) csdev, coresight_orphan_match); } +/* + * Device connections are discovered before one/both devices have been created, + * so inputs must be added later. + */ +static int coresight_fixup_inputs(struct coresight_device *csdev) +{ + int i, ret = 0; + struct coresight_connection *out_conn; + struct coresight_connection in_conn; + + for (i = 0; i < csdev->pdata->nr_outconns; i++) { + out_conn = &csdev->pdata->out_conns[i]; + if (!out_conn->child_dev || !out_conn->child_dev->pdata) + continue; + + /* Reverse in/out/child/parent relationships for inputs */ + in_conn.child_dev = csdev; + in_conn.child_port = out_conn->outport; + in_conn.outport = out_conn->child_port; + in_conn.child_fwnode = csdev->dev.fwnode; + ret = coresight_add_in_conn(out_conn->child_dev->dev.parent, + out_conn->child_dev->pdata, + &in_conn); + if (ret) + return ret; + } + + return 0; +} static int coresight_fixup_device_conns(struct coresight_device *csdev) { @@ -1427,11 +1457,20 @@ static int coresight_remove_match(struct device *dev, void *data) */ fwnode_handle_put(conn->child_fwnode); conn->child_fwnode = NULL; + conn->child_dev = NULL; + /* No need to continue */ + break; + } + } + for (i = 0; i < iterator->pdata->nr_inconns; i++) { + conn = &iterator->pdata->in_conns[i]; + if (csdev == conn->child_dev) { + conn->child_fwnode = NULL; + conn->child_dev = NULL; /* No need to continue */ break; } } - /* * Returning '0' ensures that all known component on the * bus will be checked. @@ -1552,21 +1591,28 @@ void coresight_release_platform_data(struct coresight_device *csdev, for (i = 0; i < pdata->nr_outconns; i++) { /* If we have made the links, remove them now */ - if (csdev && conns[i].child_dev) + if (csdev && conns[i].child_dev) { coresight_remove_links(csdev, &conns[i]); + conns[i].child_dev = NULL; + } + /* * Drop the refcount and clear the handle as this device * is going away */ if (conns[i].child_fwnode) { fwnode_handle_put(conns[i].child_fwnode); - pdata->out_conns[i].child_fwnode = NULL; + conns[i].child_fwnode = NULL; } } + for (i = 0; i < pdata->nr_inconns; i++) { + pdata->in_conns[i].child_dev = NULL; + pdata->in_conns[i].child_fwnode = NULL; + } + if (csdev) coresight_remove_conns_sysfs_group(csdev); } - struct coresight_device *coresight_register(struct coresight_desc *desc) { int ret; @@ -1659,6 +1705,8 @@ struct coresight_device *coresight_register(struct coresight_desc *desc) ret = coresight_create_conns_sysfs_group(csdev); if (!ret) ret = coresight_fixup_device_conns(csdev); + if (!ret) + ret = coresight_fixup_inputs(csdev); if (!ret) ret = coresight_fixup_orphan_conns(csdev); diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c index 8effce5937d9..3ebf490601f3 100644 --- a/drivers/hwtracing/coresight/coresight-platform.c +++ b/drivers/hwtracing/coresight/coresight-platform.c @@ -20,8 +20,7 @@ #include "coresight-priv.h" /* - * coresight_alloc_conns: Allocate connections record for each output - * port from the device. + * coresight_alloc_conns: Allocate connections record for each input/output device. */ static int coresight_alloc_conns(struct device *dev, struct coresight_platform_data *pdata) @@ -33,7 +32,14 @@ static int coresight_alloc_conns(struct device *dev, if (!pdata->out_conns) return -ENOMEM; } - + if (pdata->nr_inconns) { + pdata->in_conns = devm_krealloc_array(dev, pdata->in_conns, + pdata->nr_inconns, + sizeof(*pdata->in_conns), + GFP_KERNEL | __GFP_ZERO); + if (!pdata->in_conns) + return -ENOMEM; + } return 0; } @@ -79,6 +85,45 @@ int coresight_add_conn(struct device *dev, } EXPORT_SYMBOL_GPL(coresight_add_conn); +/* + * Add a connection in the first free slot, or realloc + * if there is no space. + * + * Do nothing if the connection already exists because inputs are + * fixed up multiple times. + */ +int coresight_add_in_conn(struct device *dev, + struct coresight_platform_data *pdata, + struct coresight_connection *conn) +{ + int ret; + struct coresight_connection *free_conn = NULL; + int i; + + /* Search for a free slot or exit if a duplicate is found */ + if (pdata->in_conns) { + for (i = 0; i < pdata->nr_inconns; ++i) { + if (!free_conn && !pdata->in_conns[i].child_fwnode) + free_conn = &pdata->in_conns[i]; + if (pdata->in_conns[i].child_fwnode == + conn->child_fwnode) + return 0; + } + } + + if (!free_conn) { + pdata->nr_inconns++; + ret = coresight_alloc_conns(dev, pdata); + if (ret) + return ret; + free_conn = &pdata->in_conns[pdata->nr_inconns - 1]; + } + + *free_conn = *conn; + return 0; +} +EXPORT_SYMBOL_GPL(coresight_add_in_conn); + static struct device * coresight_find_device_by_fwnode(struct fwnode_handle *fwnode) { @@ -249,7 +294,7 @@ static int of_coresight_get_cpu(struct device *dev) /* * of_coresight_parse_endpoint : Parse the given output endpoint @ep - * and fill the connection information in @conn + * and fill the connection information in @in_conn and @out_conn * * Parses the local port, remote device name and the remote port. * @@ -333,14 +378,14 @@ static int of_get_coresight_platform_data(struct device *dev, /* Get the number of input and output port for this component */ of_coresight_get_ports(node, &pdata->nr_inconns, &pdata->nr_outconns); - /* If there are no output connections, we are done */ - if (!pdata->nr_outconns) - return 0; - ret = coresight_alloc_conns(dev, pdata); if (ret) return ret; + /* If there are no output connections, we are done */ + if (!pdata->nr_outconns) + return 0; + parent = of_coresight_get_output_ports_node(node); /* * If the DT uses obsoleted bindings, the ports are listed diff --git a/drivers/hwtracing/coresight/coresight-sysfs.c b/drivers/hwtracing/coresight/coresight-sysfs.c index 34d2a2d31d00..8c7cff502070 100644 --- a/drivers/hwtracing/coresight/coresight-sysfs.c +++ b/drivers/hwtracing/coresight/coresight-sysfs.c @@ -202,5 +202,4 @@ void coresight_remove_links(struct coresight_device *orig, devm_kfree(&orig->dev, conn->link->orig_name); devm_kfree(&orig->dev, conn->link); conn->link = NULL; - conn->child_dev = NULL; } diff --git a/include/linux/coresight.h b/include/linux/coresight.h index 62cc8e43b6cb..daecee847b95 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -110,6 +110,7 @@ struct coresight_platform_data { int nr_inconns; int nr_outconns; struct coresight_connection *out_conns; + struct coresight_connection *in_conns; }; /** @@ -167,9 +168,34 @@ struct coresight_desc { * @outport: a connection's output port number. * @child_port: remote component's port number @output is connected to. * @chid_fwnode: remote component's fwnode handle. - * @child_dev: remote component's @coresight_device representation. Will - * be looked up and assigned using @child_fwnode + * @child_dev: remote component's @coresight_device representation connected + * to @outport. Will be looked up and assigned using @child_fwnode + * upon device registration. + * @parent_dev: a @coresight_device representation of the owner of this + connection. As in, the device connected to @child_port of the + target of the connection. * @link: Representation of the connection as a sysfs link. + * + * The full connection structure looks like this, where in_conns store references to + * the parent device in the same child_dev member as output connections. + * + * +-----------------------------+ +-----------------------------+ + * |coresight_device | |coresight_connection | + * |-----------------------------| |-----------------------------| + * ---->| | | | + * | | | | child_dev*|------ + * | |pdata->out_conns[nr_outconns]|----------->| | | + * | | | | | | + * | +-----------------------------+ +-----------------------------+ | + * | | + * | +-----------------------------+ +-----------------------------+ | + * | |coresight_connection | |coresight_device | | + * | |-----------------------------| |------------------------------ | + * | | | | |<----- + * -----|child_dev* | | | + * | |<-----------|pdata->in_conns[nr_inconns] | + * | | | | + * +-----------------------------+ +-----------------------------+ */ struct coresight_connection { int outport; @@ -612,5 +638,8 @@ struct coresight_platform_data *coresight_get_platform_data(struct device *dev); int coresight_add_conn(struct device *dev, struct coresight_platform_data *pdata, const struct coresight_connection *conn); +int coresight_add_in_conn(struct device *dev, + struct coresight_platform_data *pdata, + struct coresight_connection *conn); #endif /* _LINUX_COREISGHT_H */ From patchwork Wed Mar 8 17:39:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 13166290 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8A7A3C64EC4 for ; Wed, 8 Mar 2023 17:41:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=LZ4trxc8Kztdnw6ok84d+5oN+wr6yDTyQ24VWLVOfgg=; b=Nrv2oduI5owGdM 6bCaI2M1Iwe1d7aZqtq1KJ0tPpTReDbU0sdHDmbH3rNGCdk2t4AZSUa1E2vbNBSOqm0NxD1dPuzvL tEa772p7MvjpMam+IoPOdU92gFHKrZwal6RduMDvjCogYk8DvqyjKDFPqW9Ty9qDh78ZEleHnA9ke r6JGn48GgruTayH4HX8pK4Jo8l/OWMTBsa5RNzp4p52DZdE8q/zNZyrZtrg69+aHWHIw6WC65Ww3w WDed9iVhVNVRfVR+tR9JUoJ8SRKwkSJNfGE12G+B5mzsCtLduPRPVGGevA6Uo7+jA9ll8EcEgxo2r xMeTNWX08BDz7s/SBZGg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZxm0-006DcA-EC; Wed, 08 Mar 2023 17:40:20 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pZxlF-006DBr-B5 for linux-arm-kernel@lists.infradead.org; Wed, 08 Mar 2023 17:39:34 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id EA2A11063; Wed, 8 Mar 2023 09:40:15 -0800 (PST) Received: from e127643.arm.com (unknown [10.57.48.148]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id F10CF3F67D; Wed, 8 Mar 2023 09:39:30 -0800 (PST) From: James Clark To: coresight@lists.linaro.org Cc: James Clark , Mathieu Poirier , Suzuki K Poulose , Mike Leach , Leo Yan , Alexander Shishkin , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 6/8] coresight: Refactor out buffer allocation function for ETR Date: Wed, 8 Mar 2023 17:39:00 +0000 Message-Id: <20230308173904.3449231-7-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230308173904.3449231-1-james.clark@arm.com> References: <20230308173904.3449231-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230308_093933_490542_D517149E X-CRM114-Status: GOOD ( 16.17 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org When CATU is moved to the generic enable/disable path system in the next commit, it will need to call into ETR and get it to pre-allocate its buffer so add a function for it. No functional changes Signed-off-by: James Clark --- .../hwtracing/coresight/coresight-tmc-etr.c | 49 ++++++++++++++++--- drivers/hwtracing/coresight/coresight-tmc.h | 2 + 2 files changed, 44 insertions(+), 7 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index 4711dfa7418c..e9327778d751 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -1169,7 +1169,7 @@ void tmc_etr_disable_hw(struct tmc_drvdata *drvdata) drvdata->etr_buf = NULL; } -static int tmc_enable_etr_sink_sysfs(struct coresight_device *csdev) +static struct etr_buf *tmc_etr_get_sysfs_buffer(struct coresight_device *csdev) { int ret = 0; unsigned long flags; @@ -1192,7 +1192,7 @@ static int tmc_enable_etr_sink_sysfs(struct coresight_device *csdev) /* Allocate memory with the locks released */ free_buf = new_buf = tmc_etr_setup_sysfs_buf(drvdata); if (IS_ERR(new_buf)) - return PTR_ERR(new_buf); + return new_buf; /* Let's try again */ spin_lock_irqsave(&drvdata->spinlock, flags); @@ -1223,17 +1223,33 @@ static int tmc_enable_etr_sink_sysfs(struct coresight_device *csdev) drvdata->sysfs_buf = new_buf; } - ret = tmc_etr_enable_hw(drvdata, drvdata->sysfs_buf); - if (!ret) { - drvdata->mode = CS_MODE_SYSFS; - atomic_inc(csdev->refcnt); - } out: spin_unlock_irqrestore(&drvdata->spinlock, flags); /* Free memory outside the spinlock if need be */ if (free_buf) tmc_etr_free_sysfs_buf(free_buf); + return drvdata->sysfs_buf; +} + +static int tmc_enable_etr_sink_sysfs(struct coresight_device *csdev) +{ + int ret; + unsigned long flags; + struct tmc_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); + struct etr_buf *sysfs_buf = tmc_etr_get_sysfs_buffer(csdev); + + if (IS_ERR(sysfs_buf)) + return PTR_ERR(sysfs_buf); + + spin_lock_irqsave(&drvdata->spinlock, flags); + ret = tmc_etr_enable_hw(drvdata, sysfs_buf); + if (!ret) { + drvdata->mode = CS_MODE_SYSFS; + atomic_inc(csdev->refcnt); + } + + spin_unlock_irqrestore(&drvdata->spinlock, flags); if (!ret) dev_dbg(&csdev->dev, "TMC-ETR enabled\n"); @@ -1241,6 +1257,25 @@ static int tmc_enable_etr_sink_sysfs(struct coresight_device *csdev) return ret; } +struct etr_buf *tmc_etr_get_buffer(struct coresight_device *csdev, + enum cs_mode mode, void *data) +{ + struct perf_output_handle *handle = data; + struct etr_perf_buffer *etr_perf = etm_perf_sink_config(handle); + + switch (mode) { + case CS_MODE_SYSFS: + return tmc_etr_get_sysfs_buffer(csdev); + case CS_MODE_PERF: + if (WARN_ON(!etr_perf || !etr_perf->etr_buf)) + return ERR_PTR(-EINVAL); + return etr_perf->etr_buf; + default: + return ERR_PTR(-EINVAL); + } +} +EXPORT_SYMBOL_GPL(tmc_etr_get_buffer); + /* * alloc_etr_buf: Allocate ETR buffer for use by perf. * The size of the hardware buffer is dependent on the size configured diff --git a/drivers/hwtracing/coresight/coresight-tmc.h b/drivers/hwtracing/coresight/coresight-tmc.h index 01c0382a29c0..b97da39652d2 100644 --- a/drivers/hwtracing/coresight/coresight-tmc.h +++ b/drivers/hwtracing/coresight/coresight-tmc.h @@ -332,5 +332,7 @@ struct coresight_device *tmc_etr_get_catu_device(struct tmc_drvdata *drvdata); void tmc_etr_set_catu_ops(const struct etr_buf_operations *catu); void tmc_etr_remove_catu_ops(void); +struct etr_buf *tmc_etr_get_buffer(struct coresight_device *csdev, + enum cs_mode mode, void *data); #endif From patchwork Wed Mar 8 17:39:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 13166291 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D2EA7C64EC4 for ; Wed, 8 Mar 2023 17:41:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Wed, 8 Mar 2023 09:39:34 -0800 (PST) From: James Clark To: coresight@lists.linaro.org Cc: James Clark , Mathieu Poirier , Suzuki K Poulose , Mike Leach , Leo Yan , Alexander Shishkin , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 7/8] coresight: Enable and disable helper devices adjacent to the path Date: Wed, 8 Mar 2023 17:39:01 +0000 Message-Id: <20230308173904.3449231-8-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230308173904.3449231-1-james.clark@arm.com> References: <20230308173904.3449231-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230308_093936_732630_0A3EDA62 X-CRM114-Status: GOOD ( 28.27 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Currently CATU is the only helper device, and its enable and disable calls are hard coded. To allow more helper devices to be added in a generic way, remove these hard coded calls and just enable and disable all helper devices. This has to apply to helpers adjacent to the path, because they will never be in the path. CATU was already discovered in this way, so there is no change there. One change that is needed is for CATU to call back into ETR to allocate the buffer. Because the enable call was previously hard coded, it was done at a point where the buffer was already allocated, but this is no longer the case. Signed-off-by: James Clark --- drivers/hwtracing/coresight/coresight-catu.c | 34 ++++++++-- drivers/hwtracing/coresight/coresight-core.c | 68 ++++++++++++++++++- .../hwtracing/coresight/coresight-tmc-etr.c | 28 -------- include/linux/coresight.h | 3 +- 4 files changed, 99 insertions(+), 34 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c index bc90a03f478f..56e68360833f 100644 --- a/drivers/hwtracing/coresight/coresight-catu.c +++ b/drivers/hwtracing/coresight/coresight-catu.c @@ -395,13 +395,32 @@ static inline int catu_wait_for_ready(struct catu_drvdata *drvdata) return coresight_timeout(csa, CATU_STATUS, CATU_STATUS_READY, 1); } -static int catu_enable_hw(struct catu_drvdata *drvdata, void *data) +static struct coresight_device * +catu_get_etr_device(struct coresight_device *csdev) +{ + int i; + struct coresight_device *tmp; + + for (i = 0; i < csdev->pdata->nr_inconns; i++) { + tmp = csdev->pdata->in_conns[i].child_dev; + if (tmp && tmp->type == CORESIGHT_DEV_TYPE_SINK && + tmp->subtype.sink_subtype == + CORESIGHT_DEV_SUBTYPE_SINK_SYSMEM) + return tmp; + } + + return NULL; +} + +static int catu_enable_hw(struct catu_drvdata *drvdata, enum cs_mode cs_mode, + void *data) { int rc; u32 control, mode; - struct etr_buf *etr_buf = data; + struct etr_buf *etr_buf = NULL; struct device *dev = &drvdata->csdev->dev; struct coresight_device *csdev = drvdata->csdev; + struct coresight_device *etrdev; if (catu_wait_for_ready(drvdata)) dev_warn(dev, "Timeout while waiting for READY\n"); @@ -416,6 +435,12 @@ static int catu_enable_hw(struct catu_drvdata *drvdata, void *data) if (rc) return rc; + etrdev = catu_get_etr_device(csdev); + if (etrdev) { + etr_buf = tmc_etr_get_buffer(etrdev, cs_mode, data); + if (IS_ERR(etr_buf)) + return PTR_ERR(etr_buf); + } control |= BIT(CATU_CONTROL_ENABLE); if (etr_buf && etr_buf->mode == ETR_MODE_CATU) { @@ -441,13 +466,14 @@ static int catu_enable_hw(struct catu_drvdata *drvdata, void *data) return 0; } -static int catu_enable(struct coresight_device *csdev, void *data) +static int catu_enable(struct coresight_device *csdev, enum cs_mode mode, + void *data) { int rc; struct catu_drvdata *catu_drvdata = csdev_to_catu_drvdata(csdev); CS_UNLOCK(catu_drvdata->base); - rc = catu_enable_hw(catu_drvdata, data); + rc = catu_enable_hw(catu_drvdata, mode, data); CS_LOCK(catu_drvdata->base); return rc; } diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index fe9fb11ab283..7554307f0d88 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -441,6 +441,34 @@ static int coresight_enable_source(struct coresight_device *csdev, return 0; } +static int coresight_enable_helper(struct coresight_device *csdev, + enum cs_mode mode, void *sink_data) +{ + int ret; + + if (!helper_ops(csdev)->enable) + return 0; + ret = helper_ops(csdev)->enable(csdev, mode, sink_data); + if (ret) + return ret; + + csdev->enable = true; + return 0; +} + +static void coresight_disable_helper(struct coresight_device *csdev) +{ + int ret; + + if (!helper_ops(csdev)->disable) + return; + + ret = helper_ops(csdev)->disable(csdev, NULL); + if (ret) + return; + csdev->enable = false; +} + /** * coresight_disable_source - Drop the reference count by 1 and disable * the device if there are no users left. @@ -460,6 +488,18 @@ static bool coresight_disable_source(struct coresight_device *csdev) return !csdev->enable; } +static void coresight_disable_helpers(struct coresight_device *csdev) +{ + int i; + struct coresight_device *helper; + + for (i = 0; i < csdev->pdata->nr_outconns; ++i) { + helper = csdev->pdata->out_conns[i].child_dev; + if (helper && helper->type == CORESIGHT_DEV_TYPE_HELPER) + coresight_disable_helper(helper); + } +} + /* * coresight_disable_path_from : Disable components in the given path beyond * @nd in the list. If @nd is NULL, all the components, except the SOURCE are @@ -509,6 +549,9 @@ static void coresight_disable_path_from(struct list_head *path, default: break; } + + /* Disable all helpers adjacent along the path last */ + coresight_disable_helpers(csdev); } } @@ -518,9 +561,28 @@ void coresight_disable_path(struct list_head *path) } EXPORT_SYMBOL_GPL(coresight_disable_path); -int coresight_enable_path(struct list_head *path, enum cs_mode mode, void *sink_data) +static int coresight_enable_helpers(struct coresight_device *csdev, + enum cs_mode mode, void *sink_data) { + int i, ret = 0; + struct coresight_device *helper; + + for (i = 0; i < csdev->pdata->nr_outconns; ++i) { + helper = csdev->pdata->out_conns[i].child_dev; + if (!helper || helper->type != CORESIGHT_DEV_TYPE_HELPER) + continue; + ret = coresight_enable_helper(helper, mode, sink_data); + if (ret) + return ret; + } + + return 0; +} + +int coresight_enable_path(struct list_head *path, enum cs_mode mode, + void *sink_data) +{ int ret = 0; u32 type; struct coresight_node *nd; @@ -530,6 +592,10 @@ int coresight_enable_path(struct list_head *path, enum cs_mode mode, void *sink_ csdev = nd->csdev; type = csdev->type; + /* Enable all helpers adjacent to the path first */ + ret = coresight_enable_helpers(csdev, mode, sink_data); + if (ret) + goto err; /* * ETF devices are tricky... They can be a link or a sink, * depending on how they are configured. If an ETF has been diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index e9327778d751..74266bbdb09c 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -791,24 +791,6 @@ tmc_etr_get_catu_device(struct tmc_drvdata *drvdata) } EXPORT_SYMBOL_GPL(tmc_etr_get_catu_device); -static inline int tmc_etr_enable_catu(struct tmc_drvdata *drvdata, - struct etr_buf *etr_buf) -{ - struct coresight_device *catu = tmc_etr_get_catu_device(drvdata); - - if (catu && helper_ops(catu)->enable) - return helper_ops(catu)->enable(catu, etr_buf); - return 0; -} - -static inline void tmc_etr_disable_catu(struct tmc_drvdata *drvdata) -{ - struct coresight_device *catu = tmc_etr_get_catu_device(drvdata); - - if (catu && helper_ops(catu)->disable) - helper_ops(catu)->disable(catu, drvdata->etr_buf); -} - static const struct etr_buf_operations *etr_buf_ops[] = { [ETR_MODE_FLAT] = &etr_flat_buf_ops, [ETR_MODE_ETR_SG] = &etr_sg_buf_ops, @@ -1058,13 +1040,6 @@ static int tmc_etr_enable_hw(struct tmc_drvdata *drvdata, if (WARN_ON(drvdata->etr_buf)) return -EBUSY; - /* - * If this ETR is connected to a CATU, enable it before we turn - * this on. - */ - rc = tmc_etr_enable_catu(drvdata, etr_buf); - if (rc) - return rc; rc = coresight_claim_device(drvdata->csdev); if (!rc) { drvdata->etr_buf = etr_buf; @@ -1072,7 +1047,6 @@ static int tmc_etr_enable_hw(struct tmc_drvdata *drvdata, if (rc) { drvdata->etr_buf = NULL; coresight_disclaim_device(drvdata->csdev); - tmc_etr_disable_catu(drvdata); } } @@ -1162,8 +1136,6 @@ static void __tmc_etr_disable_hw(struct tmc_drvdata *drvdata) void tmc_etr_disable_hw(struct tmc_drvdata *drvdata) { __tmc_etr_disable_hw(drvdata); - /* Disable CATU device if this ETR is connected to one */ - tmc_etr_disable_catu(drvdata); coresight_disclaim_device(drvdata->csdev); /* Reset the ETR buf used by hardware */ drvdata->etr_buf = NULL; diff --git a/include/linux/coresight.h b/include/linux/coresight.h index daecee847b95..d61b0d12542e 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -369,7 +369,8 @@ struct coresight_ops_source { * @disable : Disable the device */ struct coresight_ops_helper { - int (*enable)(struct coresight_device *csdev, void *data); + int (*enable)(struct coresight_device *csdev, enum cs_mode mode, + void *data); int (*disable)(struct coresight_device *csdev, void *data); }; From patchwork Wed Mar 8 17:39:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Clark X-Patchwork-Id: 13166292 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BEE61C64EC4 for ; Wed, 8 Mar 2023 17:42:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Wed, 8 Mar 2023 09:39:38 -0800 (PST) From: James Clark To: coresight@lists.linaro.org Cc: James Clark , Mathieu Poirier , Suzuki K Poulose , Mike Leach , Leo Yan , Alexander Shishkin , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 8/8] coresight: Fix CTI module refcount leak by making it a helper device Date: Wed, 8 Mar 2023 17:39:02 +0000 Message-Id: <20230308173904.3449231-9-james.clark@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230308173904.3449231-1-james.clark@arm.com> References: <20230308173904.3449231-1-james.clark@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230308_093941_790765_C0503415 X-CRM114-Status: GOOD ( 27.41 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The CTI module has some hard coded refcounting code that has a leak. For example running perf and then trying to unload it fails: perf record -e cs_etm// -a -- ls rmmod coresight_cti rmmod: ERROR: Module coresight_cti is in use The coresight core already handles references of devices in use, so by making CTI a normal helper device, we get working refcounting for free. Signed-off-by: James Clark --- drivers/hwtracing/coresight/coresight-core.c | 73 +++---------------- .../hwtracing/coresight/coresight-cti-core.c | 56 +++++++++----- .../hwtracing/coresight/coresight-cti-sysfs.c | 4 +- drivers/hwtracing/coresight/coresight-cti.h | 4 +- include/linux/coresight.h | 28 +------ 5 files changed, 53 insertions(+), 112 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c index 7554307f0d88..07bcb972fe15 100644 --- a/drivers/hwtracing/coresight/coresight-core.c +++ b/drivers/hwtracing/coresight/coresight-core.c @@ -253,48 +253,6 @@ void coresight_disclaim_device(struct coresight_device *csdev) } EXPORT_SYMBOL_GPL(coresight_disclaim_device); -/* enable or disable an associated CTI device of the supplied CS device */ -static int -coresight_control_assoc_ectdev(struct coresight_device *csdev, bool enable) -{ - int ect_ret = 0; - struct coresight_device *ect_csdev = csdev->ect_dev; - struct module *mod; - - if (!ect_csdev) - return 0; - if ((!ect_ops(ect_csdev)->enable) || (!ect_ops(ect_csdev)->disable)) - return 0; - - mod = ect_csdev->dev.parent->driver->owner; - if (enable) { - if (try_module_get(mod)) { - ect_ret = ect_ops(ect_csdev)->enable(ect_csdev); - if (ect_ret) { - module_put(mod); - } else { - get_device(ect_csdev->dev.parent); - csdev->ect_enabled = true; - } - } else - ect_ret = -ENODEV; - } else { - if (csdev->ect_enabled) { - ect_ret = ect_ops(ect_csdev)->disable(ect_csdev); - put_device(ect_csdev->dev.parent); - module_put(mod); - csdev->ect_enabled = false; - } - } - - /* output warning if ECT enable is preventing trace operation */ - if (ect_ret) - dev_info(&csdev->dev, "Associated ECT device (%s) %s failed\n", - dev_name(&ect_csdev->dev), - enable ? "enable" : "disable"); - return ect_ret; -} - /* * Set the associated ect / cti device while holding the coresight_mutex * to avoid a race with coresight_enable that may try to use this value. @@ -302,8 +260,14 @@ coresight_control_assoc_ectdev(struct coresight_device *csdev, bool enable) void coresight_set_assoc_ectdev_mutex(struct coresight_device *csdev, struct coresight_device *ect_csdev) { + struct coresight_connection conn = {}; + mutex_lock(&coresight_mutex); - csdev->ect_dev = ect_csdev; + conn.child_fwnode = fwnode_handle_get(dev_fwnode(&ect_csdev->dev)); + conn.child_dev = ect_csdev; + conn.child_port = conn.outport = -1; + coresight_add_conn(csdev->dev.parent, csdev->pdata, &conn); + coresight_fixup_inputs(csdev); mutex_unlock(&coresight_mutex); } EXPORT_SYMBOL_GPL(coresight_set_assoc_ectdev_mutex); @@ -320,12 +284,8 @@ static int coresight_enable_sink(struct coresight_device *csdev, if (!sink_ops(csdev)->enable) return -EINVAL; - ret = coresight_control_assoc_ectdev(csdev, true); - if (ret) - return ret; ret = sink_ops(csdev)->enable(csdev, mode, data); if (ret) { - coresight_control_assoc_ectdev(csdev, false); return ret; } csdev->enable = true; @@ -343,7 +303,6 @@ static void coresight_disable_sink(struct coresight_device *csdev) ret = sink_ops(csdev)->disable(csdev); if (ret) return; - coresight_control_assoc_ectdev(csdev, false); csdev->enable = false; } @@ -368,17 +327,11 @@ static int coresight_enable_link(struct coresight_device *csdev, return outport; if (link_ops(csdev)->enable) { - ret = coresight_control_assoc_ectdev(csdev, true); - if (!ret) { - ret = link_ops(csdev)->enable(csdev, inport, outport); - if (ret) - coresight_control_assoc_ectdev(csdev, false); - } + ret = link_ops(csdev)->enable(csdev, inport, outport); + if (!ret) + csdev->enable = true; } - if (!ret) - csdev->enable = true; - return ret; } @@ -407,7 +360,6 @@ static void coresight_disable_link(struct coresight_device *csdev, if (link_ops(csdev)->disable) { link_ops(csdev)->disable(csdev, inport, outport); - coresight_control_assoc_ectdev(csdev, false); } for (i = 0; i < nr_conns; i++) @@ -424,12 +376,8 @@ static int coresight_enable_source(struct coresight_device *csdev, if (!csdev->enable) { if (source_ops(csdev)->enable) { - ret = coresight_control_assoc_ectdev(csdev, true); - if (ret) - return ret; ret = source_ops(csdev)->enable(csdev, NULL, mode); if (ret) { - coresight_control_assoc_ectdev(csdev, false); return ret; } } @@ -482,7 +430,6 @@ static bool coresight_disable_source(struct coresight_device *csdev) if (atomic_dec_return(csdev->refcnt) == 0) { if (source_ops(csdev)->disable) source_ops(csdev)->disable(csdev, NULL); - coresight_control_assoc_ectdev(csdev, false); csdev->enable = false; } return !csdev->enable; diff --git a/drivers/hwtracing/coresight/coresight-cti-core.c b/drivers/hwtracing/coresight/coresight-cti-core.c index 277c890a1f1f..3f3dfb528188 100644 --- a/drivers/hwtracing/coresight/coresight-cti-core.c +++ b/drivers/hwtracing/coresight/coresight-cti-core.c @@ -555,7 +555,10 @@ static void cti_add_assoc_to_csdev(struct coresight_device *csdev) mutex_lock(&ect_mutex); /* exit if current is an ECT device.*/ - if ((csdev->type == CORESIGHT_DEV_TYPE_ECT) || list_empty(&ect_net)) + if ((csdev->type == CORESIGHT_DEV_TYPE_HELPER && + csdev->subtype.helper_subtype == + CORESIGHT_DEV_SUBTYPE_HELPER_ECT_CTI) || + list_empty(&ect_net)) goto cti_add_done; /* if we didn't find the csdev previously we used the fwnode name */ @@ -580,6 +583,22 @@ static void cti_add_assoc_to_csdev(struct coresight_device *csdev) mutex_unlock(&ect_mutex); } +struct coresight_device *cti__get_cti_device(struct coresight_device *csdev) +{ + int i; + struct coresight_device *tmp; + + for (i = 0; i < csdev->pdata->nr_outconns; i++) { + tmp = csdev->pdata->out_conns[i].child_dev; + + if (tmp && tmp->type == CORESIGHT_DEV_TYPE_HELPER && + tmp->subtype.helper_subtype == + CORESIGHT_DEV_SUBTYPE_HELPER_ECT_CTI) + return tmp; + } + return NULL; +} + /* * Removing the associated devices is easier. * A CTI will not have a value for csdev->ect_dev. @@ -588,20 +607,21 @@ static void cti_remove_assoc_from_csdev(struct coresight_device *csdev) { struct cti_drvdata *ctidrv; struct cti_trig_con *tc; + struct coresight_device *cti_csdev = cti__get_cti_device(csdev); struct cti_device *ctidev; + if (!cti_csdev) + return; + mutex_lock(&ect_mutex); - if (csdev->ect_dev) { - ctidrv = csdev_to_cti_drvdata(csdev->ect_dev); - ctidev = &ctidrv->ctidev; - list_for_each_entry(tc, &ctidev->trig_cons, node) { - if (tc->con_dev == csdev) { - cti_remove_sysfs_link(ctidrv, tc); - tc->con_dev = NULL; - break; - } + ctidrv = csdev_to_cti_drvdata(cti_csdev); + ctidev = &ctidrv->ctidev; + list_for_each_entry(tc, &ctidev->trig_cons, node) { + if (tc->con_dev == csdev) { + cti_remove_sysfs_link(ctidrv, tc); + tc->con_dev = NULL; + break; } - csdev->ect_dev = NULL; } mutex_unlock(&ect_mutex); } @@ -646,8 +666,6 @@ static void cti_remove_conn_xrefs(struct cti_drvdata *drvdata) list_for_each_entry(tc, &ctidev->trig_cons, node) { if (tc->con_dev) { - coresight_set_assoc_ectdev_mutex(tc->con_dev, - NULL); cti_remove_sysfs_link(drvdata, tc); tc->con_dev = NULL; } @@ -795,27 +813,27 @@ static void cti_pm_release(struct cti_drvdata *drvdata) } /** cti ect operations **/ -int cti_enable(struct coresight_device *csdev) +int cti_enable(struct coresight_device *csdev, enum cs_mode mode, void *data) { struct cti_drvdata *drvdata = csdev_to_cti_drvdata(csdev); return cti_enable_hw(drvdata); } -int cti_disable(struct coresight_device *csdev) +int cti_disable(struct coresight_device *csdev, void *data) { struct cti_drvdata *drvdata = csdev_to_cti_drvdata(csdev); return cti_disable_hw(drvdata); } -static const struct coresight_ops_ect cti_ops_ect = { +static const struct coresight_ops_helper cti_ops_ect = { .enable = cti_enable, .disable = cti_disable, }; static const struct coresight_ops cti_ops = { - .ect_ops = &cti_ops_ect, + .helper_ops = &cti_ops_ect, }; /* @@ -922,8 +940,8 @@ static int cti_probe(struct amba_device *adev, const struct amba_id *id) /* set up coresight component description */ cti_desc.pdata = pdata; - cti_desc.type = CORESIGHT_DEV_TYPE_ECT; - cti_desc.subtype.ect_subtype = CORESIGHT_DEV_SUBTYPE_ECT_CTI; + cti_desc.type = CORESIGHT_DEV_TYPE_HELPER; + cti_desc.subtype.helper_subtype = CORESIGHT_DEV_SUBTYPE_HELPER_ECT_CTI; cti_desc.ops = &cti_ops; cti_desc.groups = drvdata->ctidev.con_groups; cti_desc.dev = dev; diff --git a/drivers/hwtracing/coresight/coresight-cti-sysfs.c b/drivers/hwtracing/coresight/coresight-cti-sysfs.c index e528cff9d4e2..d25dd2737b49 100644 --- a/drivers/hwtracing/coresight/coresight-cti-sysfs.c +++ b/drivers/hwtracing/coresight/coresight-cti-sysfs.c @@ -112,11 +112,11 @@ static ssize_t enable_store(struct device *dev, ret = pm_runtime_resume_and_get(dev->parent); if (ret) return ret; - ret = cti_enable(drvdata->csdev); + ret = cti_enable(drvdata->csdev, CS_MODE_SYSFS, NULL); if (ret) pm_runtime_put(dev->parent); } else { - ret = cti_disable(drvdata->csdev); + ret = cti_disable(drvdata->csdev, NULL); if (!ret) pm_runtime_put(dev->parent); } diff --git a/drivers/hwtracing/coresight/coresight-cti.h b/drivers/hwtracing/coresight/coresight-cti.h index 8b106b13a244..cb9ee616d01f 100644 --- a/drivers/hwtracing/coresight/coresight-cti.h +++ b/drivers/hwtracing/coresight/coresight-cti.h @@ -215,8 +215,8 @@ int cti_add_connection_entry(struct device *dev, struct cti_drvdata *drvdata, const char *assoc_dev_name); struct cti_trig_con *cti_allocate_trig_con(struct device *dev, int in_sigs, int out_sigs); -int cti_enable(struct coresight_device *csdev); -int cti_disable(struct coresight_device *csdev); +int cti_enable(struct coresight_device *csdev, enum cs_mode mode, void *data); +int cti_disable(struct coresight_device *csdev, void *data); void cti_write_all_hw_regs(struct cti_drvdata *drvdata); void cti_write_intack(struct device *dev, u32 ackval); void cti_write_single_reg(struct cti_drvdata *drvdata, int offset, u32 value); diff --git a/include/linux/coresight.h b/include/linux/coresight.h index d61b0d12542e..815e0776c1cb 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -40,8 +40,7 @@ enum coresight_dev_type { CORESIGHT_DEV_TYPE_LINK, CORESIGHT_DEV_TYPE_LINKSINK, CORESIGHT_DEV_TYPE_SOURCE, - CORESIGHT_DEV_TYPE_HELPER, - CORESIGHT_DEV_TYPE_ECT, + CORESIGHT_DEV_TYPE_HELPER }; enum coresight_dev_subtype_sink { @@ -66,12 +65,7 @@ enum coresight_dev_subtype_source { enum coresight_dev_subtype_helper { CORESIGHT_DEV_SUBTYPE_HELPER_CATU, -}; - -/* Embedded Cross Trigger (ECT) sub-types */ -enum coresight_dev_subtype_ect { - CORESIGHT_DEV_SUBTYPE_ECT_NONE, - CORESIGHT_DEV_SUBTYPE_ECT_CTI, + CORESIGHT_DEV_SUBTYPE_HELPER_ECT_CTI }; /** @@ -84,8 +78,6 @@ enum coresight_dev_subtype_ect { * by @coresight_dev_subtype_source. * @helper_subtype: type of helper this component is, as defined * by @coresight_dev_subtype_helper. - * @ect_subtype: type of cross trigger this component is, as - * defined by @coresight_dev_subtype_ect */ union coresight_dev_subtype { /* We have some devices which acts as LINK and SINK */ @@ -95,7 +87,6 @@ union coresight_dev_subtype { }; enum coresight_dev_subtype_source source_subtype; enum coresight_dev_subtype_helper helper_subtype; - enum coresight_dev_subtype_ect ect_subtype; }; /** @@ -261,12 +252,9 @@ struct coresight_device { bool activated; /* true only if a sink is part of a path */ struct dev_ext_attribute *ea; struct coresight_device *def_sink; - /* cross trigger handling */ - struct coresight_device *ect_dev; /* sysfs links between components */ int nr_links; bool has_conns_grp; - bool ect_enabled; /* true only if associated ect device is enabled */ /* system configuration and feature lists */ struct list_head feature_csdev_list; struct list_head config_csdev_list; @@ -374,23 +362,11 @@ struct coresight_ops_helper { int (*disable)(struct coresight_device *csdev, void *data); }; -/** - * struct coresight_ops_ect - Ops for an embedded cross trigger device - * - * @enable : Enable the device - * @disable : Disable the device - */ -struct coresight_ops_ect { - int (*enable)(struct coresight_device *csdev); - int (*disable)(struct coresight_device *csdev); -}; - struct coresight_ops { const struct coresight_ops_sink *sink_ops; const struct coresight_ops_link *link_ops; const struct coresight_ops_source *source_ops; const struct coresight_ops_helper *helper_ops; - const struct coresight_ops_ect *ect_ops; }; #if IS_ENABLED(CONFIG_CORESIGHT)