From patchwork Mon Feb 5 18:28:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 13546021 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 DB645C4828D for ; Mon, 5 Feb 2024 18:28:49 +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=uJIHNMHCXXfKPrXjkxa2ia9R9ukLfl1aGEMirfRTWrs=; b=SXdoLjES2WUWT8 u2CKECfoCm5yqHHXd+gkIrCZbGc0Xj6UifNyc2vZb3+7PhmypF51/w8Z/JUXkjneaAarwkpCUJf0Z XD/JOzWbfmMzYI1Qqm9DiKFuiEaqp8oUfQanyGHOETzd/ppxQjf/YF/MScSUFqflR0Rs+SBVTe5n+ fofQJuKSMv8ga6fJhgOVXl/VKrYYAfByLrRQijld7oPlsfUuqNWu14pPL1P2pIY4tb7kVIlAbqJL1 BIRirMC7NTzZEaLJ6suCYJrCj21YArXloFv7cUnnapT/YT7JFi4wZO8y36YItUSYHOUoMmr++1C+N vsLoqKWLlPuXGfWff0zw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rX3hx-00000004N16-1pZi; Mon, 05 Feb 2024 18:28:41 +0000 Received: from mail-wm1-x32f.google.com ([2a00:1450:4864:20::32f]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rX3hn-00000004MtK-2qrR for linux-arm-kernel@lists.infradead.org; Mon, 05 Feb 2024 18:28:33 +0000 Received: by mail-wm1-x32f.google.com with SMTP id 5b1f17b1804b1-40ef64d8955so43314165e9.3 for ; Mon, 05 Feb 2024 10:28:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1707157710; x=1707762510; darn=lists.infradead.org; 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=2ES7ecXlXJM4Un4rzG7GFObnKvctiGb4CfffnKCJdG4=; b=keaC7yGkJmMwJf/s3Lo3X/ww6Zm0sntdw4hvDCNASEOau1Eg4tnZOKanOLLoy+b9XS +ISq2M7h0JPeGrbMTd+ac2oLUEcYYF/sR8/+JDWJvPPPaN2lktimYezcv9V8aXvZvaX8 Q1xctiwZK64u8RbI9m9+W/prINk5L06mAceWDMOtMnO7gsQh6c5A7A9A8eGKxmhI9ecE 9M1/9jq3RlVSiREIZkZH88fll/NUOcPXGSr4eclKD6j2NvFPjLIW1OqWbratsilDwd1W rzv+LqCcfxwFrflQTfLmiQkZ1VkVawhSL5U124Bd3KJ3W1VyjmkW5pMbk/InhPfUCEQW IP5w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707157710; x=1707762510; 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=2ES7ecXlXJM4Un4rzG7GFObnKvctiGb4CfffnKCJdG4=; b=hCLt/gALssSfWJlqG39Ws+vo6Cth71TT3Q1r14pZexE6FbTEkEJVRRy6BlHCVjSfT2 bbI++HtCXC3ExKJI870yyiVlteeOQkRt4AJpEu9mCgO+K1imCu0/jbnXyU6gnt3mY3lV nb7/Izu8dCtmz/tJCIuw+RXorwk784Wc42sYhly7LwbtCYYSamE3Mmuk+1erywa+Eu7v XrExCYneNH25cyqn7rbewP+JSQy+jKAy5aYVmskPuZDr78/zlhD3vGHVPnaJ3EPNL4MI 2+UI/dLUu2Li9tUI8vHxbaP4PlNvGCKz/uDze/c3u+uGZLDb+V4Veu03uzAJADW75Qdl 5nsQ== X-Gm-Message-State: AOJu0YxIS2wEsuMjrtppqkJdFMklByYpXBCHPH57zUFLPON/mg+hr7Iq MEHPwW5h3MazbuoJYMJLLcUJlGt7sDWycsLnMLw4EBpu7vZVrVy+ooekerHAWX4= X-Google-Smtp-Source: AGHT+IHRaxer47lLsNPzE1lYerxnHDOmXIYeuKvwusAuZfA0G+ZPa72Q9c/tVaihsJD/QECD4k3d6w== X-Received: by 2002:a05:600c:4ed4:b0:40f:cd96:31b7 with SMTP id g20-20020a05600c4ed400b0040fcd9631b7mr397542wmq.30.1707157709934; Mon, 05 Feb 2024 10:28:29 -0800 (PST) X-Forwarded-Encrypted: i=0; AJvYcCXG4NRUGyz5H1DuEu3Wfk/Kz0AdLGb+zwwdX27Og5B0V7rIfarK16JLITSBQM/V9KeyyGchkFjLnJq7U9cX0GxpZtXosrAMPWWfYMFs2+/fLe50BF/hxsFGhKKOp5F8+jYV4rKyLp0BybdCDhPtJKBwg1kDXd5I7XZn7Ko+ZaZCmi+v09BUiOiXYpBYizzi8cxavpe2SlviXaovcaQ0daNEOl8C2LrqSGm8VmzkN7W6y0LBquZ4jJSFwbd1rJmxp36ubDgFfauUaTaDSLzg7bAd6aIYf/6ntYPSPjJavzU+u5k+8+nbEF4XDQNXTxMHlMT54VwjsqfzelEQ6Q2W8ONCV6f9xuhtNWVCflicS/5XDLAaSa0vZrqlkWncoMrtQIm4jF4DVfq/rRvHGqhOGTI/rrOV6v0IFM3Nhb1jCljYOT9hOBDfaQf43NaWgg4wIAFYdivbD449bwQme8kwM7SK9u5nvaGTmxR9G0oWfTqBt2JmMV5+EyPJZ2snVWBc7BW/BRXExustKITp2ztgqUsNnw5stbn8kNEPc/RBuaCEXpbWIIDpet1nkCZWLxDkMus= Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:d929:10db:5b5c:b49d]) by smtp.gmail.com with ESMTPSA id v15-20020a5d678f000000b0033b17e18df8sm203229wru.12.2024.02.05.10.28.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Feb 2024 10:28:29 -0800 (PST) From: Bartosz Golaszewski To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Elliot Berman , Krzysztof Kozlowski , Guru Das Srinagesh , Andrew Halaney , Maximilian Luz , Alex Elder , Srini Kandagatla , Arnd Bergmann Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@quicinc.com, Bartosz Golaszewski , Deepti Jaggi Subject: [PATCH v7 09/12] firmware: qcom: scm: add support for SHM bridge operations Date: Mon, 5 Feb 2024 19:28:07 +0100 Message-Id: <20240205182810.58382-10-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240205182810.58382-1-brgl@bgdev.pl> References: <20240205182810.58382-1-brgl@bgdev.pl> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240205_102831_841833_CE771B49 X-CRM114-Status: GOOD ( 12.80 ) 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 From: Bartosz Golaszewski Add low-level primitives for enabling SHM bridge support as well as creating and destroying SHM bridge pools to qcom-scm. Signed-off-by: Bartosz Golaszewski Acked-by: Andrew Halaney Tested-by: Andrew Halaney # sc8280xp-lenovo-thinkpad-x13s Tested-by: Deepti Jaggi #sa8775p-ride Reviewed-by: Elliot Berman --- drivers/firmware/qcom/qcom_scm.c | 60 ++++++++++++++++++++++++++ drivers/firmware/qcom/qcom_scm.h | 3 ++ include/linux/firmware/qcom/qcom_scm.h | 6 +++ 3 files changed, 69 insertions(+) diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c index 318d7d398e5f..839773270a21 100644 --- a/drivers/firmware/qcom/qcom_scm.c +++ b/drivers/firmware/qcom/qcom_scm.c @@ -1323,6 +1323,66 @@ bool qcom_scm_lmh_dcvsh_available(void) } EXPORT_SYMBOL_GPL(qcom_scm_lmh_dcvsh_available); +int qcom_scm_shm_bridge_enable(void) +{ + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_MP, + .cmd = QCOM_SCM_MP_SHM_BRIDGE_ENABLE, + .owner = ARM_SMCCC_OWNER_SIP + }; + + struct qcom_scm_res res; + + if (!__qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_MP, + QCOM_SCM_MP_SHM_BRIDGE_ENABLE)) + return -EOPNOTSUPP; + + return qcom_scm_call(__scm->dev, &desc, &res) ?: res.result[0]; +} +EXPORT_SYMBOL_GPL(qcom_scm_shm_bridge_enable); + +int qcom_scm_shm_bridge_create(struct device *dev, u64 pfn_and_ns_perm_flags, + u64 ipfn_and_s_perm_flags, u64 size_and_flags, + u64 ns_vmids, u64 *handle) +{ + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_MP, + .cmd = QCOM_SCM_MP_SHM_BRIDGE_CREATE, + .owner = ARM_SMCCC_OWNER_SIP, + .args[0] = pfn_and_ns_perm_flags, + .args[1] = ipfn_and_s_perm_flags, + .args[2] = size_and_flags, + .args[3] = ns_vmids, + .arginfo = QCOM_SCM_ARGS(4, QCOM_SCM_VAL, QCOM_SCM_VAL, + QCOM_SCM_VAL, QCOM_SCM_VAL), + }; + + struct qcom_scm_res res; + int ret; + + ret = qcom_scm_call(__scm->dev, &desc, &res); + + if (handle && !ret) + *handle = res.result[1]; + + return ret ?: res.result[0]; +} +EXPORT_SYMBOL_GPL(qcom_scm_shm_bridge_create); + +int qcom_scm_shm_bridge_delete(struct device *dev, u64 handle) +{ + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_MP, + .cmd = QCOM_SCM_MP_SHM_BRIDGE_DELETE, + .owner = ARM_SMCCC_OWNER_SIP, + .args[0] = handle, + .arginfo = QCOM_SCM_ARGS(1, QCOM_SCM_VAL), + }; + + return qcom_scm_call(__scm->dev, &desc, NULL); +} +EXPORT_SYMBOL_GPL(qcom_scm_shm_bridge_delete); + int qcom_scm_lmh_profile_change(u32 profile_id) { struct qcom_scm_desc desc = { diff --git a/drivers/firmware/qcom/qcom_scm.h b/drivers/firmware/qcom/qcom_scm.h index aa7d06939f8e..cb7273aa0a5e 100644 --- a/drivers/firmware/qcom/qcom_scm.h +++ b/drivers/firmware/qcom/qcom_scm.h @@ -116,6 +116,9 @@ struct qcom_tzmem_pool *qcom_scm_get_tzmem_pool(void); #define QCOM_SCM_MP_IOMMU_SET_CP_POOL_SIZE 0x05 #define QCOM_SCM_MP_VIDEO_VAR 0x08 #define QCOM_SCM_MP_ASSIGN 0x16 +#define QCOM_SCM_MP_SHM_BRIDGE_ENABLE 0x1c +#define QCOM_SCM_MP_SHM_BRIDGE_DELETE 0x1d +#define QCOM_SCM_MP_SHM_BRIDGE_CREATE 0x1e #define QCOM_SCM_SVC_OCMEM 0x0f #define QCOM_SCM_OCMEM_LOCK_CMD 0x01 diff --git a/include/linux/firmware/qcom/qcom_scm.h b/include/linux/firmware/qcom/qcom_scm.h index ccaf28846054..9b6054813f59 100644 --- a/include/linux/firmware/qcom/qcom_scm.h +++ b/include/linux/firmware/qcom/qcom_scm.h @@ -115,6 +115,12 @@ int qcom_scm_lmh_dcvsh(u32 payload_fn, u32 payload_reg, u32 payload_val, int qcom_scm_lmh_profile_change(u32 profile_id); bool qcom_scm_lmh_dcvsh_available(void); +int qcom_scm_shm_bridge_enable(void); +int qcom_scm_shm_bridge_create(struct device *dev, u64 pfn_and_ns_perm_flags, + u64 ipfn_and_s_perm_flags, u64 size_and_flags, + u64 ns_vmids, u64 *handle); +int qcom_scm_shm_bridge_delete(struct device *dev, u64 handle); + #ifdef CONFIG_QCOM_QSEECOM int qcom_scm_qseecom_app_get_id(const char *app_name, u32 *app_id);