From patchwork Fri Sep 8 02:51:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AKASHI Takahiro X-Patchwork-Id: 1831216 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=yuBe6qSy; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org) Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4RhgfJ6NSDz1yh5 for ; Fri, 8 Sep 2023 12:53:28 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id B84DB86A24; Fri, 8 Sep 2023 04:52:33 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.b="yuBe6qSy"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id E502586A1A; Fri, 8 Sep 2023 04:52:31 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.2 Received: from mail-pl1-x636.google.com (mail-pl1-x636.google.com [IPv6:2607:f8b0:4864:20::636]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id D857F86995 for ; Fri, 8 Sep 2023 04:52:28 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=takahiro.akashi@linaro.org Received: by mail-pl1-x636.google.com with SMTP id d9443c01a7336-1bf7b5e1f06so3055835ad.0 for ; Thu, 07 Sep 2023 19:52:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1694141547; x=1694746347; darn=lists.denx.de; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=FFPJjDa20a8vFvRkRF/UxpvOVUFkHJ53fb9mlcp1AUY=; b=yuBe6qSyS1zxPYYwR3L4cvXL3GudRk0ucOSkKDmdpPFFcu+CO0rj+jQXwsk7b/Rn7v bK245lUmlXpThkuxitTT4qocG9wS5PB/65R5KkvZHEgiptSPSnpQ3IfEGlQLBrqkiAGt lsf7g9Y3pjFR9WtM8AqVwGh++8l/1nSQH4A4+KCXJTGGZd9sFfSxfXa+GZCZTRpsEnJt pqy7fmgnH12tbuJlNvr9GOjQ7wxt8xiJe6623MtL7EXNGjDo1mhimvRY6YtSQhcnG0bl 4trR6Iw6Vu3uPS1IkEx0lgOzIpT2/79cpGOQaji734pfqKraqjtqyxa581oTpxEaDeEw L3Pw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1694141547; x=1694746347; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=FFPJjDa20a8vFvRkRF/UxpvOVUFkHJ53fb9mlcp1AUY=; b=K0hV/7oxljFhkKFQ4IQv6gGiVVovLdMmEW+HULhPOtdKBK7WujQSB8CgGzRzr8P8Dl xtEE9IdMjsM5eZKp3o+qFYZZWgFQnihymv18px61Wa6JUPIDqC7AoAeDjmSu7VA/ELTi 8yODsnTls+KydJ239MeSG8IExYtWWg/rvOqkTCLjVa1PWbbPsnBT1IbU9cBqzHAuFoZH e3+k3lpTPPfmGdoxJMN9pja9lql3Gca+u9tAY50NNd4ZBKhaxScqPx/VDdzNY9D0KvrH AXFNCbhZlCCYNb3pTVmwTFhx++/lrSqidu0Bgw/H4JlLGPhbIHHLAEhkhnHgBYEeR3+6 Svgg== X-Gm-Message-State: AOJu0Yy4QFkmoWpctGw17W3RDABlES5by3wkQDTD6Ww+ARVv6eycIlVT cenFNkiNFFLqdwAXj7qdUjTzRPfO40UJdqjg8qvzMw== X-Google-Smtp-Source: AGHT+IFjTcqG4pnyiF1b4om556Kq6XmhN42all25nj682jWhcqu3kPJAF6K6U/AeHbE60gsgdF5POQ== X-Received: by 2002:a17:902:d48d:b0:1c2:c60:8387 with SMTP id c13-20020a170902d48d00b001c20c608387mr1544408plg.0.1694141547104; Thu, 07 Sep 2023 19:52:27 -0700 (PDT) Received: from octopus.. ([2400:4050:c3e1:100:2d89:7669:ac2d:f09e]) by smtp.gmail.com with ESMTPSA id n9-20020a170902e54900b001c0ce518e98sm417286plf.224.2023.09.07.19.52.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Sep 2023 19:52:26 -0700 (PDT) From: AKASHI Takahiro To: trini@konsulko.com, sjg@chromium.org Cc: etienne.carriere@st.com, u-boot@lists.denx.de, AKASHI Takahiro , Etienne Carriere Subject: [PATCH v3 05/13] firmware: scmi: install base protocol to SCMI agent Date: Fri, 8 Sep 2023 11:51:30 +0900 Message-Id: <20230908025138.44405-6-takahiro.akashi@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230908025138.44405-1-takahiro.akashi@linaro.org> References: <20230908025138.44405-1-takahiro.akashi@linaro.org> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean SCMI base protocol is mandatory, and once SCMI node is found in a device tree, the protocol handle (udevice) is unconditionally installed to the agent. Then basic information will be retrieved from SCMI server via the protocol and saved into the agent instance's local storage. Signed-off-by: AKASHI Takahiro Reviewed-by: Simon Glass Reviewed-by: Etienne Carriere --- v3 * typo fix: add '@' for argument name in function description * eliminate dev_get_uclass_plat()'s repeated in inline * modify the code for dynamically allocated sub-vendor/agent names v2 * use helper functions, removing direct uses of ops --- drivers/firmware/scmi/scmi_agent-uclass.c | 116 ++++++++++++++++++++++ include/scmi_agent-uclass.h | 66 ++++++++++++ 2 files changed, 182 insertions(+) diff --git a/drivers/firmware/scmi/scmi_agent-uclass.c b/drivers/firmware/scmi/scmi_agent-uclass.c index e823d105a3eb..87a667d60124 100644 --- a/drivers/firmware/scmi/scmi_agent-uclass.c +++ b/drivers/firmware/scmi/scmi_agent-uclass.c @@ -57,6 +57,9 @@ struct udevice *scmi_get_protocol(struct udevice *dev, } switch (id) { + case SCMI_PROTOCOL_ID_BASE: + proto = priv->base_dev; + break; case SCMI_PROTOCOL_ID_CLOCK: proto = priv->clock_dev; break; @@ -101,6 +104,9 @@ static int scmi_add_protocol(struct udevice *dev, } switch (proto_id) { + case SCMI_PROTOCOL_ID_BASE: + priv->base_dev = proto; + break; case SCMI_PROTOCOL_ID_CLOCK: priv->clock_dev = proto; break; @@ -237,6 +243,83 @@ int devm_scmi_process_msg(struct udevice *dev, struct scmi_msg *msg) return scmi_process_msg(protocol->parent, priv->channel, msg); } +/** + * scmi_fill_base_info - get base information about SCMI server + * @agent: SCMI agent device + * @dev: SCMI protocol device + * + * By using Base protocol commands, collect the base information + * about SCMI server. + * + * Return: 0 on success, error code otherwise + */ +static int scmi_fill_base_info(struct udevice *agent, struct udevice *dev) +{ + struct scmi_agent_priv *priv = dev_get_uclass_plat(agent); + int ret; + + ret = scmi_base_protocol_version(dev, &priv->version); + if (ret) { + dev_err(dev, "protocol_version() failed (%d)\n", ret); + return ret; + } + /* check for required version */ + if (priv->version < SCMI_BASE_PROTOCOL_VERSION) { + dev_err(dev, "base protocol version (%d) lower than expected\n", + priv->version); + return -EPROTO; + } + + ret = scmi_base_protocol_attrs(dev, &priv->num_agents, + &priv->num_protocols); + if (ret) { + dev_err(dev, "protocol_attrs() failed (%d)\n", ret); + return ret; + } + ret = scmi_base_discover_vendor(dev, &priv->vendor); + if (ret) { + dev_err(dev, "base_discover_vendor() failed (%d)\n", ret); + return ret; + } + ret = scmi_base_discover_sub_vendor(dev, &priv->sub_vendor); + if (ret) { + if (ret != -EOPNOTSUPP) { + dev_err(dev, "base_discover_sub_vendor() failed (%d)\n", + ret); + return ret; + } + priv->sub_vendor = "NA"; + } + ret = scmi_base_discover_impl_version(dev, &priv->impl_version); + if (ret) { + dev_err(dev, "base_discover_impl_version() failed (%d)\n", + ret); + return ret; + } + + priv->agent_id = 0xffffffff; /* to avoid false claim */ + ret = scmi_base_discover_agent(dev, 0xffffffff, + &priv->agent_id, &priv->agent_name); + if (ret) { + if (ret != -EOPNOTSUPP) { + dev_err(dev, + "base_discover_agent() failed for myself (%d)\n", + ret); + return ret; + } + priv->agent_name = "NA"; + } + + ret = scmi_base_discover_list_protocols(dev, &priv->protocols); + if (ret != priv->num_protocols) { + dev_err(dev, "base_discover_list_protocols() failed (%d)\n", + ret); + return ret; + } + + return 0; +} + /* * SCMI agent devices binds devices of various uclasses depeding on * the FDT description. scmi_bind_protocol() is a generic bind sequence @@ -251,6 +334,39 @@ static int scmi_bind_protocols(struct udevice *dev) struct driver *drv; struct udevice *proto; + if (!uclass_get_device(UCLASS_SCMI_AGENT, 1, &agent)) { + /* This is a second SCMI agent */ + dev_err(dev, "Cannot have more than one SCMI agent\n"); + return -EEXIST; + } + + /* initialize the device from device tree */ + drv = DM_DRIVER_GET(scmi_base_drv); + name = "scmi-base.0"; + ret = device_bind(dev, drv, name, NULL, ofnode_null(), &proto); + if (ret) { + dev_err(dev, "failed to bind base protocol\n"); + return ret; + } + ret = scmi_add_protocol(dev, SCMI_PROTOCOL_ID_BASE, proto); + if (ret) { + dev_err(dev, "failed to add protocol: %s, ret: %d\n", + proto->name, ret); + return ret; + } + + ret = device_probe(proto); + if (ret) { + dev_err(dev, "failed to probe base protocol\n"); + return ret; + } + + ret = scmi_fill_base_info(dev, proto); + if (ret) { + dev_err(dev, "failed to get base information\n"); + return ret; + } + dev_for_each_subnode(node, dev) { u32 protocol_id; diff --git a/include/scmi_agent-uclass.h b/include/scmi_agent-uclass.h index 3358c2b2d804..6fd6d54d6a5a 100644 --- a/include/scmi_agent-uclass.h +++ b/include/scmi_agent-uclass.h @@ -5,6 +5,7 @@ #ifndef _SCMI_AGENT_UCLASS_H #define _SCMI_AGENT_UCLASS_H +#include #include struct scmi_msg; @@ -12,16 +13,81 @@ struct scmi_channel; /** * struct scmi_agent_priv - private data maintained by agent instance + * @version: Version + * @num_agents: Number of agents + * @num_protocols: Number of protocols + * @impl_version: Implementation version + * @protocols: Array of protocol IDs + * @vendor: Vendor name + * @sub_vendor: Sub-vendor name + * @agent_name: Agent name + * agent_id: Identifier of agent + * @base_dev: SCMI base protocol device * @clock_dev: SCMI clock protocol device * @resetdom_dev: SCMI reset domain protocol device * @voltagedom_dev: SCMI voltage domain protocol device */ struct scmi_agent_priv { + u32 version; + u32 num_agents; + u32 num_protocols; + u32 impl_version; + u8 *protocols; + u8 *vendor; + u8 *sub_vendor; + u8 *agent_name; + u32 agent_id; + struct udevice *base_dev; struct udevice *clock_dev; struct udevice *resetdom_dev; struct udevice *voltagedom_dev; }; +static inline u32 scmi_version(struct udevice *dev) +{ + return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->version; +} + +static inline u32 scmi_num_agents(struct udevice *dev) +{ + return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->num_agents; +} + +static inline u32 scmi_num_protocols(struct udevice *dev) +{ + return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->num_protocols; +} + +static inline u32 scmi_impl_version(struct udevice *dev) +{ + return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->impl_version; +} + +static inline u8 *scmi_protocols(struct udevice *dev) +{ + return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->protocols; +} + +static inline u8 *scmi_vendor(struct udevice *dev) +{ + return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->vendor; +} + +static inline u8 *scmi_sub_vendor(struct udevice *dev) +{ + return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->sub_vendor; +} + +static inline u8 *scmi_agent_name(struct udevice *dev) +{ + return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->agent_name; +} + +static inline u32 scmi_agent_id(struct udevice *dev) +{ + return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->agent_id; +} + /** * struct scmi_transport_ops - The functions that a SCMI transport layer must implement. */