From patchwork Mon Aug 28 19:25:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 13368243 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 5EDD9C83F15 for ; Mon, 28 Aug 2023 19:28:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233096AbjH1T15 (ORCPT ); Mon, 28 Aug 2023 15:27:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59976 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233367AbjH1T1c (ORCPT ); Mon, 28 Aug 2023 15:27:32 -0400 Received: from mail-wr1-x434.google.com (mail-wr1-x434.google.com [IPv6:2a00:1450:4864:20::434]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 37469120 for ; Mon, 28 Aug 2023 12:27:12 -0700 (PDT) Received: by mail-wr1-x434.google.com with SMTP id ffacd0b85a97d-31adc5c899fso3201614f8f.2 for ; Mon, 28 Aug 2023 12:27:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1693250831; x=1693855631; 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=5cFxADGOERyNFN7lTVtP33aE4fUtIdh4yla5Ms0ctiE=; b=EoXzrnanHjxRlCVdFNR3jEL/xRmfXMhI4RzAOrNmLf3G2biAWlM7vvmO7zLkPHT4iK 5Le0KJNfMSWSAwMlhFthLroTME9MfrlZuNQF5utevteIrmy0/Av5ZCo33of6uVD6MzZw A1KumZvLrH7LkMecujD0FPIYUstS5WpuDS37Ojb2nzciYE9Xh5rv0wqiVRJgNyR/eYOw epjjDQD+dBqlNcb4kQb7Sa60JXJvr7soJSrAuFyOkgWHC0Dit3u6CO0PaVO6+PsJ0nTy zKUet+A0wII8xV9lzUXPhMgXlFMm113iHCOpFEQhZhKXxSt/ZxNZqwZ+GN5YszttspJ7 Ks9Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693250831; x=1693855631; 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=5cFxADGOERyNFN7lTVtP33aE4fUtIdh4yla5Ms0ctiE=; b=f/VsPp/kESDm8NKNWYq1fU3GZaBAKlnHkocEzu+r+vkhENq9+z8ODABOtAZxsZVWWl UvrgNOOHr3QHnubHk+YL69g1s3aPKxxE2iUQdJFJC1J39pe+sA65/a38/JJPwyqzDvDI n5ro6PLQoCCBtJ4LGqm3iCiJdwDOyYW1m4+3hTgzw1UNDuwHltKpU/AsxFuKcHeZ65kH 9VxO5A1o/lmduNN+9/u7Gq+WMbgdAgg0/zAprg+FLzZ1L9UrHZVgiSA9Ep5KSsxg2jSY 9q1CBa5foWi90FfNbWHwzceM3Yk7/RmIdf+8h/RJXor8Ylcw1UoFFQIWUHCj0IIrJTvb xu6Q== X-Gm-Message-State: AOJu0YxwB4ySw1JOJqP6SJwBLi8qyPbESCwHDRN3Ljss7p7lVYgkPaKI PypYUxBlTj5k/7FEOylh+/vzbg== X-Google-Smtp-Source: AGHT+IFTdl/tQdMkT1arHw9DxZMr0l64zUqWz+qHpOkaOVV+i2xMx+CKkBv3fHfRzh8d+Cw4kcZ+EQ== X-Received: by 2002:a5d:4d02:0:b0:317:5a9b:fcec with SMTP id z2-20020a5d4d02000000b003175a9bfcecmr19670541wrt.14.1693250830785; Mon, 28 Aug 2023 12:27:10 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:8bd:7f16:d368:115f]) by smtp.gmail.com with ESMTPSA id i20-20020a5d5234000000b003141f96ed36sm11435319wra.0.2023.08.28.12.27.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Aug 2023 12:27:10 -0700 (PDT) From: Bartosz Golaszewski To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Catalin Marinas , Will Deacon , Arnd Bergmann , Alex Elder , Srini Kandagatla Cc: kernel@quicinc.com, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Bartosz Golaszewski Subject: [PATCH 07/11] firmware: qcom-scm: use SHM bridge if available Date: Mon, 28 Aug 2023 21:25:03 +0200 Message-Id: <20230828192507.117334-8-bartosz.golaszewski@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230828192507.117334-1-bartosz.golaszewski@linaro.org> References: <20230828192507.117334-1-bartosz.golaszewski@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Allocate the memory for SCM call arguments from the Shared Memory Bridge if it's available. Signed-off-by: Bartosz Golaszewski --- drivers/firmware/qcom_scm-smc.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/firmware/qcom_scm-smc.c b/drivers/firmware/qcom_scm-smc.c index 16cf88acfa8e..6045be600c2a 100644 --- a/drivers/firmware/qcom_scm-smc.c +++ b/drivers/firmware/qcom_scm-smc.c @@ -11,6 +11,7 @@ #include #include #include +#include #include "qcom_scm.h" @@ -161,6 +162,7 @@ int __scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc, ARM_SMCCC_SMC_32 : ARM_SMCCC_SMC_64; struct arm_smccc_res smc_res; struct arm_smccc_args smc = {0}; + bool using_shm_bridge = qcom_scm_shm_bridge_available(); smc.args[0] = ARM_SMCCC_CALL_VAL( smccc_call_type, @@ -173,8 +175,12 @@ int __scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc, if (unlikely(arglen > SCM_SMC_N_REG_ARGS)) { alloc_len = SCM_SMC_N_EXT_ARGS * sizeof(u64); - args_virt = kzalloc(PAGE_ALIGN(alloc_len), flag); - + if (using_shm_bridge) + args_virt = qcom_shm_bridge_alloc(NULL, + PAGE_ALIGN(alloc_len), + flag); + else + args_virt = kzalloc(PAGE_ALIGN(alloc_len), flag); if (!args_virt) return -ENOMEM; @@ -196,7 +202,10 @@ int __scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc, DMA_TO_DEVICE); if (dma_mapping_error(dev, args_phys)) { - kfree(args_virt); + if (using_shm_bridge) + qcom_shm_bridge_free(args_virt); + else + kfree(args_virt); return -ENOMEM; } @@ -208,7 +217,10 @@ int __scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc, if (args_virt) { dma_unmap_single(dev, args_phys, alloc_len, DMA_TO_DEVICE); - kfree(args_virt); + if (using_shm_bridge) + qcom_shm_bridge_free(args_virt); + else + kfree(args_virt); } if (ret)