From patchwork Mon Oct 9 15:34:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 732142 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AAEE2E95A96 for ; Mon, 9 Oct 2023 15:35:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1377796AbjJIPfr (ORCPT ); Mon, 9 Oct 2023 11:35:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41888 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376940AbjJIPfa (ORCPT ); Mon, 9 Oct 2023 11:35:30 -0400 Received: from mail-wr1-x433.google.com (mail-wr1-x433.google.com [IPv6:2a00:1450:4864:20::433]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E6739122 for ; Mon, 9 Oct 2023 08:34:56 -0700 (PDT) Received: by mail-wr1-x433.google.com with SMTP id ffacd0b85a97d-3231d67aff2so4680677f8f.0 for ; Mon, 09 Oct 2023 08:34:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1696865695; x=1697470495; darn=vger.kernel.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=AGMo0XfPtT2eoS0TClJYKLLiBxw0PNFjU9Xb0WM0Oqk=; b=Nu8nyImco6PL1/6xgnQ57B3wdOs2YNxrMMQjtwIj1CxO2B3XLOh25OX5MaZCfhn+ki V1zLB/JrONiLUw6Iqin+JyXuFtwZa2nIc9cFlQmgGPpn4s55deN1vn6bpIWRD96GNxHS jYfhItwZPrxaN5AzFVGPASlLZYjsYR9liQgbs/KY2YOBfgOWNI6tZ/ihq+IZaR582kuc 1WcwNpH8zCAkCy/Jt96rVDwKfDhf7sHPgKFknVASRG+maw//7NISbDNsuVNjO+/39cNU xz9242M8F7iqxqXf/M9iANcKalVRukkwiDi2EDWvga0wXCv2ARhugEvbGf53n8CjJDwx vfRA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696865695; x=1697470495; 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=AGMo0XfPtT2eoS0TClJYKLLiBxw0PNFjU9Xb0WM0Oqk=; b=DnDMc5GLAMSMD3DSAb87FCZFIa9I8Hk3WrUz8U0vK/JRmX5Ot9qE43c1G/4L9M625K oqZ/PQL+NA/Gn850MpQ6fNaKD/t3phyIG/YwY9eGt79D43wco1i2kuUboqurjil4bJmG MG13dNzSLYGZHb5A8wpAicbQTt8CDpDO50fjUJiv3G5xdqbYMUYpDVkLXXSFRTNNUAJk WCUbd8Z3gPn314g8kriEna9o57gEoMrEbKltss3i+87G4t3JdW+vPDYFaWtm008wYr6N YETTVVyPWLpuTALzBXvXaMwr3U0bNQTG6xW+krm4f6X6m528MVWrQmCrjyhQ547KAr0z Atpg== X-Gm-Message-State: AOJu0YxWtoFgA7npP2LrU1w+uXBFgE6EwpRng24YlInSJontglIspm82 U0I3wo/6HdgrApoJ+36qyDkzAQ== X-Google-Smtp-Source: AGHT+IExMQGmoR910TN87hWZUaBBToBu+dIq/NTctCOEhsbuP+TC5cdn0qj3s9d/swCgx1y0tiBEZw== X-Received: by 2002:adf:cc81:0:b0:321:5971:23a5 with SMTP id p1-20020adfcc81000000b00321597123a5mr13956454wrj.20.1696865695351; Mon, 09 Oct 2023 08:34:55 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:f20d:2959:7545:e99f]) by smtp.gmail.com with ESMTPSA id b3-20020adff243000000b0031431fb40fasm10016521wrp.89.2023.10.09.08.34.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Oct 2023 08:34:54 -0700 (PDT) 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 Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@quicinc.com, Bartosz Golaszewski Subject: [PATCH v3 12/15] firmware: qcom: scm: add support for SHM bridge operations Date: Mon, 9 Oct 2023 17:34:24 +0200 Message-Id: <20231009153427.20951-13-brgl@bgdev.pl> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231009153427.20951-1-brgl@bgdev.pl> References: <20231009153427.20951-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.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 --- 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);