From patchwork Wed Jan 18 12:14:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cristian Marussi X-Patchwork-Id: 13106274 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 72D5EC32793 for ; Wed, 18 Jan 2023 12:20:23 +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=6RqgNBdNhSylwRMEtn9IXjg/LfVAcwzQZJFM7SyZG/Q=; b=ZD7fvWfc+4EW6x Ed/betSKh+gYlBkzB1csKFq/TbP7wv6hKrdK0bY2TaGBxZBLABP64x2RrEiCWuBU6Y0T5wK+m0FtW Ih18gLSODtonZoE7zkZ8kx2KLCJUUZhv67nVlwfCdzSvdrea3Kopf1/ZXb9D8jSeGT/Ct5Fz52Rpw NfUkdT4e7k2vBlbpwfgQ12h2zGdITGXG6spHVyHPtgf/p5Z+jbroIl6otFENHEb1hrwFwKxjUqfJ3 ygZpzNEIETCPjn7rlxVdS6hqMga+BoaVZnpURGV5euJPFKVPCyB8FGZ2GtS6gh7M8T48bImJuWHHR xfOLzqtpn2n/pq+bnPrA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pI7O1-000jcF-J3; Wed, 18 Jan 2023 12:17:49 +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 1pI7Lb-000iWP-Qk for linux-arm-kernel@lists.infradead.org; Wed, 18 Jan 2023 12:15:21 +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 D453216F3; Wed, 18 Jan 2023 04:15:59 -0800 (PST) Received: from e120937-lin.. (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id A60503F71A; Wed, 18 Jan 2023 04:15:15 -0800 (PST) From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: sudeep.holla@arm.com, james.quinlan@broadcom.com, Jonathan.Cameron@Huawei.com, f.fainelli@gmail.com, etienne.carriere@linaro.org, vincent.guittot@linaro.org, souvik.chakravarty@arm.com, wleavitt@marvell.com, peter.hilber@opensynergy.com, nicola.mazzucato@arm.com, tarek.el-sherbiny@arm.com, quic_kshivnan@quicinc.com, cristian.marussi@arm.com Subject: [PATCH v8 07/17] firmware: arm_scmi: Add internal platform/channel IDs Date: Wed, 18 Jan 2023 12:14:16 +0000 Message-Id: <20230118121426.492864-8-cristian.marussi@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230118121426.492864-1-cristian.marussi@arm.com> References: <20230118121426.492864-1-cristian.marussi@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230118_041520_022315_A80BC49A X-CRM114-Status: GOOD ( 15.76 ) 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 couple of unique identifiers to channel and platform instance descriptors in order to emit more descriptive message dump traces. Signed-off-by: Cristian Marussi --- drivers/firmware/arm_scmi/common.h | 3 +++ drivers/firmware/arm_scmi/driver.c | 17 +++++++++++++++-- 2 files changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h index 049607280ea5..bf3883f169e3 100644 --- a/drivers/firmware/arm_scmi/common.h +++ b/drivers/firmware/arm_scmi/common.h @@ -157,6 +157,8 @@ void scmi_protocol_release(const struct scmi_handle *handle, u8 protocol_id); /** * struct scmi_chan_info - Structure representing a SCMI channel information * + * @id: An identifier for this channel: this matches the protocol number + * used to initialize this channel * @dev: Reference to device in the SCMI hierarchy corresponding to this * channel * @rx_timeout_ms: The configured RX timeout in milliseconds. @@ -168,6 +170,7 @@ void scmi_protocol_release(const struct scmi_handle *handle, u8 protocol_id); * @transport_info: Transport layer related information */ struct scmi_chan_info { + int id; struct device *dev; unsigned int rx_timeout_ms; struct scmi_handle *handle; diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index fefa01dbf9ee..af34324e923b 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -39,6 +39,8 @@ #define CREATE_TRACE_POINTS #include +static DEFINE_IDA(scmi_id); + static DEFINE_IDR(scmi_protocols); static DEFINE_SPINLOCK(protocol_lock); @@ -98,6 +100,7 @@ struct scmi_protocol_instance { /** * struct scmi_info - Structure representing a SCMI instance * + * @id: A sequence number starting from zero identifying this instance * @dev: Device pointer * @desc: SoC description for this instance * @version: SCMI revision information containing protocol version, @@ -131,6 +134,7 @@ struct scmi_protocol_instance { * @devreq_mtx: A mutex to serialize device creation for this SCMI instance */ struct scmi_info { + int id; struct device *dev; const struct scmi_desc *desc; struct scmi_revision_info version; @@ -2270,6 +2274,7 @@ static int scmi_chan_setup(struct scmi_info *info, struct device_node *of_node, } of_node_get(of_node); + cinfo->id = prot_id; cinfo->dev = &tdev->dev; ret = info->desc->ops->chan_setup(cinfo, info->dev, tx); if (ret) { @@ -2486,6 +2491,10 @@ static int scmi_probe(struct platform_device *pdev) if (!info) return -ENOMEM; + info->id = ida_alloc_min(&scmi_id, 0, GFP_KERNEL); + if (info->id < 0) + return info->id; + info->dev = dev; info->desc = desc; info->bus_nb.notifier_call = scmi_bus_notifier; @@ -2518,13 +2527,13 @@ static int scmi_probe(struct platform_device *pdev) if (desc->ops->link_supplier) { ret = desc->ops->link_supplier(dev); if (ret) - return ret; + goto clear_ida; } /* Setup all channels described in the DT at first */ ret = scmi_channels_setup(info); if (ret) - return ret; + goto clear_ida; ret = bus_register_notifier(&scmi_bus_type, &info->bus_nb); if (ret) @@ -2604,6 +2613,8 @@ static int scmi_probe(struct platform_device *pdev) bus_unregister_notifier(&scmi_bus_type, &info->bus_nb); clear_txrx_setup: scmi_cleanup_txrx_channels(info); +clear_ida: + ida_free(&scmi_id, info->id); return ret; } @@ -2637,6 +2648,8 @@ static int scmi_remove(struct platform_device *pdev) /* Safe to free channels since no more users */ scmi_cleanup_txrx_channels(info); + ida_free(&scmi_id, info->id); + return 0; }