Received: by 2002:a05:6a10:f3d0:0:0:0:0 with SMTP id a16csp147216pxv; Thu, 24 Jun 2021 05:01:46 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxwclfopDxWep9Jo90D3438e5xE4bAVaCrU5uGXXeEuWyS0vAcKazVApI1kjzzZ+9GKb86J X-Received: by 2002:a17:907:6e7:: with SMTP id yh7mr5107321ejb.352.1624536105729; Thu, 24 Jun 2021 05:01:45 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1624536105; cv=none; d=google.com; s=arc-20160816; b=mWviIdXqxMhfPPu9HvI9E7xoxqGCtn7U3DXYWQX9+MV57p64ha6bCAOLqIBnV51bv8 us0q0yAxcEmaBTqDuqRVlu3iCWOX7ZIjrcW7RBmJ/ggD5ZHDj5KTG7dF/SiqO70CXe+5 1UyrO/piL66FD9O5zgsoWbO06Vmfv6+NP6oJF1qzv6qGLRhEiHOhh+dKfAkitGdmL5UW vYR2P7rJxUjI+1RB/RamT2yfYfA83R7y3u1e2DfAYrSnSb6VxVPjXdth6tntChg2mLr5 G36v5esg24x/qCPhH0DYNQypzO8CVCSBZnh3D1X00za7ofGfxy2gp/BuKpJLIA1yv0jY KRXA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=eijKYTcdSgjUORNbFd3aQ96Ibey7LIG8Pwg8gaFrgAg=; b=c6pznaMjym0PTCmMC/+trYdw9ct8MGMqbzoJ3jFP+NEO7ooWKPLr6yvN1vfN8i5ui1 BtPlHDvh9zUOrk5E0BSUKbIE14JDpoaadCc6baPg6LAlkEhWBQkUVMv0O8lfTMgeXEn6 NxibM1oZ7VBLmWkjIea6c+s2Vk6+8JOXUCY7A+b8FmNMqGp399BYB/0iSJu7u2pIynYm Kl+w9r7ibNY/RaiVFMWloMLQOi2ikXSS1sQINnULXl//sSqmegEUoK8XmnV81GU/7nU/ ewXVhoubRuVCPAb3xD8nHfdXzCqHlruvTtHAcU4aWd5NkcoCc/bIyeIxS70DBlvfvXLa 0lzA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=JgMRZ1ot; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id zd7si2599273ejb.406.2021.06.24.05.01.21; Thu, 24 Jun 2021 05:01:45 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=JgMRZ1ot; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230288AbhFXMAi (ORCPT + 99 others); Thu, 24 Jun 2021 08:00:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37730 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230252AbhFXMAf (ORCPT ); Thu, 24 Jun 2021 08:00:35 -0400 Received: from mail-qt1-x82c.google.com (mail-qt1-x82c.google.com [IPv6:2607:f8b0:4864:20::82c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CCF11C061766 for ; Thu, 24 Jun 2021 04:58:16 -0700 (PDT) Received: by mail-qt1-x82c.google.com with SMTP id d9so4541714qtx.8 for ; Thu, 24 Jun 2021 04:58:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=eijKYTcdSgjUORNbFd3aQ96Ibey7LIG8Pwg8gaFrgAg=; b=JgMRZ1otbqrdr8v6RfG1O5qyiq+sc/UK6pR7wktlQI21P6U9Ot2ebbXpqyOfCswpXD vHnOrJq457FEZWbAPtRUd+0QxMYhptRZiNfxVN6WduYqUiNkjrraOj8V/VODKYnMfx7x UfS82fN7N2sE+mFkuiJQwL75JYtbA6JksESv3uMIQjW7zSgfAUKNwkGaoESy2x9yuu8N nLu0sXn9yBfr3QdST/FrJeuxBaM8SYzPjuFi7DgFg6dlsuBDJdPJgBlR3f+Dz52+qbUK pOLofkEx/PZ6MpDUCwec4rDfH9YKzJQIFIYr/xvdBa+SCqbqzUDrl99G966QjMJOtJ1H L2Mw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=eijKYTcdSgjUORNbFd3aQ96Ibey7LIG8Pwg8gaFrgAg=; b=aLZBxMvcVkDrDZoINxah7irf9h5UEQau25ofYOpAFFB/6pC2EauamJr3sqvlsb5Mv5 bEQSd/W0iRYu1SY67uB335SmDW1+NXXQhWREF0a/ajtEEiVc8tHYXzfC2PQaOAXobhxy BvUtGB3LYsRZAldvisN5aBcvSV5H03wp50pQ8+CqXR+J+Lg3+9a2C6U1+YGCHw2dNo2Z EnrILgG3on3FVLcpnimOyDbf5DI7kybEVkhJhewFKOYEZ7sxYGZ3QXBkCY3Ui//LPI03 kddZsV97jykROln62mV1LaubCU7wG3n/DJBJntudO4jmTz4WzUVn880W6DO00mHJSR4j 2iRg== X-Gm-Message-State: AOAM531I3H6/hEm6y10+o7wL0Y08cee8YcaDvX/EtwkC951hT/ZaiEFR +ZxZOx50UlDo/1K7Su8HMjUhRw== X-Received: by 2002:ac8:7699:: with SMTP id g25mr4231845qtr.309.1624535896000; Thu, 24 Jun 2021 04:58:16 -0700 (PDT) Received: from pop-os.fios-router.home (pool-71-163-245-5.washdc.fios.verizon.net. [71.163.245.5]) by smtp.googlemail.com with ESMTPSA id w3sm2287173qkp.55.2021.06.24.04.58.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Jun 2021 04:58:15 -0700 (PDT) From: Thara Gopinath To: agross@kernel.org, bjorn.andersson@linaro.org, rui.zhang@intel.com, daniel.lezcano@linaro.org, viresh.kumar@linaro.org, rjw@rjwysocki.net, robh+dt@kernel.org Cc: linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: [Patch v2 1/5] firmware: qcom_scm: Introduce SCM calls to access LMh Date: Thu, 24 Jun 2021 07:58:09 -0400 Message-Id: <20210624115813.3613290-2-thara.gopinath@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210624115813.3613290-1-thara.gopinath@linaro.org> References: <20210624115813.3613290-1-thara.gopinath@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce SCM calls to access/configure limits management hardware(LMH). Signed-off-by: Thara Gopinath --- v1->v2: Changed the input parameters in qcom_scm_lmh_dcvsh from payload_buf and payload_size to payload_fn, payload_reg, payload_val as per Bjorn's review comments. drivers/firmware/qcom_scm.c | 54 +++++++++++++++++++++++++++++++++++++ drivers/firmware/qcom_scm.h | 4 +++ include/linux/qcom_scm.h | 14 ++++++++++ 3 files changed, 72 insertions(+) diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index ee9cb545e73b..19e9fb91d084 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c @@ -1147,6 +1147,60 @@ int qcom_scm_qsmmu500_wait_safe_toggle(bool en) } EXPORT_SYMBOL(qcom_scm_qsmmu500_wait_safe_toggle); +bool qcom_scm_lmh_dcvsh_available(void) +{ + return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_LMH, QCOM_SCM_LMH_LIMIT_DCVSH); +} +EXPORT_SYMBOL(qcom_scm_lmh_dcvsh_available); + +int qcom_scm_lmh_profile_change(u32 profile_id) +{ + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_LMH, + .cmd = QCOM_SCM_LMH_LIMIT_PROFILE_CHANGE, + .arginfo = QCOM_SCM_ARGS(1, QCOM_SCM_VAL), + .args[0] = profile_id, + .owner = ARM_SMCCC_OWNER_SIP, + }; + + return qcom_scm_call(__scm->dev, &desc, NULL); +} +EXPORT_SYMBOL(qcom_scm_lmh_profile_change); + +int qcom_scm_lmh_dcvsh(u32 payload_fn, u32 payload_reg, u32 payload_val, + u64 limit_node, u32 node_id, u64 version) +{ + dma_addr_t payload_phys; + u32 *payload_buf; + int payload_size = 5 * sizeof(u32); + + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_LMH, + .cmd = QCOM_SCM_LMH_LIMIT_DCVSH, + .arginfo = QCOM_SCM_ARGS(5, QCOM_SCM_RO, QCOM_SCM_VAL, QCOM_SCM_VAL, + QCOM_SCM_VAL, QCOM_SCM_VAL), + .args[1] = payload_size, + .args[2] = limit_node, + .args[3] = node_id, + .args[4] = version, + .owner = ARM_SMCCC_OWNER_SIP, + }; + + payload_buf = dma_alloc_coherent(__scm->dev, payload_size, &payload_phys, GFP_KERNEL); + if (!payload_buf) + return -ENOMEM; + + payload_buf[0] = payload_fn; + payload_buf[1] = 0; + payload_buf[2] = payload_reg; + payload_buf[3] = 1; + payload_buf[4] = payload_val; + + desc.args[0] = payload_phys; + return qcom_scm_call(__scm->dev, &desc, NULL); +} +EXPORT_SYMBOL(qcom_scm_lmh_dcvsh); + static int qcom_scm_find_dload_address(struct device *dev, u64 *addr) { struct device_node *tcsr; diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h index 632fe3142462..d92156ceb3ac 100644 --- a/drivers/firmware/qcom_scm.h +++ b/drivers/firmware/qcom_scm.h @@ -114,6 +114,10 @@ extern int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc, #define QCOM_SCM_SVC_HDCP 0x11 #define QCOM_SCM_HDCP_INVOKE 0x01 +#define QCOM_SCM_SVC_LMH 0x13 +#define QCOM_SCM_LMH_LIMIT_PROFILE_CHANGE 0x01 +#define QCOM_SCM_LMH_LIMIT_DCVSH 0x10 + #define QCOM_SCM_SVC_SMMU_PROGRAM 0x15 #define QCOM_SCM_SMMU_CONFIG_ERRATA1 0x03 #define QCOM_SCM_SMMU_CONFIG_ERRATA1_CLIENT_ALL 0x02 diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h index 0165824c5128..c0475d1c9885 100644 --- a/include/linux/qcom_scm.h +++ b/include/linux/qcom_scm.h @@ -109,6 +109,12 @@ extern int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt, u32 *resp); extern int qcom_scm_qsmmu500_wait_safe_toggle(bool en); + +extern int qcom_scm_lmh_dcvsh(u32 payload_fn, u32 payload_reg, u32 payload_val, + u64 limit_node, u32 node_id, u64 version); +extern int qcom_scm_lmh_profile_change(u32 profile_id); +extern bool qcom_scm_lmh_dcvsh_available(void); + #else #include @@ -170,5 +176,13 @@ static inline int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt, static inline int qcom_scm_qsmmu500_wait_safe_toggle(bool en) { return -ENODEV; } + +static inline int qcom_scm_lmh_dcvsh(u32 payload_fn, u32 payload_reg, u32 payload_val, + u64 limit_node, u32 node_id, u64 version) + { return -ENODEV; } + +static inline int qcom_scm_lmh_profile_change(u32 profile_id) { return -ENODEV; } + +static inline bool qcom_scm_lmh_dcvsh_available(void) { return -ENODEV; } #endif #endif -- 2.25.1