From patchwork Thu Sep 28 09:20:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 727223 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 AA080CE7B10 for ; Thu, 28 Sep 2023 09:21:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231615AbjI1JVM (ORCPT ); Thu, 28 Sep 2023 05:21:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60696 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231577AbjI1JVJ (ORCPT ); Thu, 28 Sep 2023 05:21:09 -0400 Received: from mail-wr1-x430.google.com (mail-wr1-x430.google.com [IPv6:2a00:1450:4864:20::430]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DBDFC196 for ; Thu, 28 Sep 2023 02:21:04 -0700 (PDT) Received: by mail-wr1-x430.google.com with SMTP id ffacd0b85a97d-32008e339adso11780183f8f.2 for ; Thu, 28 Sep 2023 02:21:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1695892863; x=1696497663; 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=Bhvnh9OE997tswH9jSZ8GJnXlXkzgsgO3a5Q/DPonFc=; b=rvFi8Fj8kRtdFRgW6wXh3179g3cMjGHxkNRoATwjwng8kbLqBx+JJNNqzjHt0P0LBB cV8mMkePJka1Ib6SlbVlRclzX+34BIys67X1FehYJvuImv22zkPim20wNH3clLSqEELt 51YP9pbaIPwLxcSSwvclA/Zom94D/6FMkFyW0yafwHDipLaMHnYsF6qyPup+e8oBcfal dZ2zncJxXDll7AM+bSwoFOSXfQTzRfWjS7ryOtECZ4ogFBw4YemmBbeUvJy4C0ZnPFXb EoFUXb52iPkCO80aL6shXYYREAadXUpFzn3nJCJpetwa8IJNgOgkRozOI8hCxUxJIi33 G6Lg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695892863; x=1696497663; 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=Bhvnh9OE997tswH9jSZ8GJnXlXkzgsgO3a5Q/DPonFc=; b=AnMDFkv5COtuQeYyDSupjt3hv+7D+AFf5z3GfENtSqp3JT40igWwkIXYvCiQEucB2C O52WfytwKPTVWiO6z17Io+k2cNKpjzAqVZ3xPYmyhUgfmkGzwwo5d7oIKl74keph3/8l 6Iz9e8hWC46RC2mUANe0Sj9GPwWDXUcj8TikHVbEB6uXwqbNz92NsG09YyldPR87XrVN ah55ntyUamLKJSiG5/MGiHaucaHF6dnowtMUJdenMkQ2draVzV5/Z029gmyEWE84er5i bB6JQhCAF8SXA4pJzlLjojnd1lJ0sXuCCoxyQcs2lDNRNm5MYAKferytfr9aNE9dH+dE lCvQ== X-Gm-Message-State: AOJu0Ywr9JFxU2qWuI7k78ufzO5oN6rQOhe66t3zS5kI2zNSRwK2AMH3 djIC9F13BphTw6QHuDnzbAGfPg== X-Google-Smtp-Source: AGHT+IGQyggTMr9G3lck9DdE2/M/2/aJTExkk54GkglOS8vF8v+T6QNbn/6+dVleA/C2S/3U7G2ykQ== X-Received: by 2002:a5d:414e:0:b0:320:1d1:71c4 with SMTP id c14-20020a5d414e000000b0032001d171c4mr646792wrq.23.1695892863407; Thu, 28 Sep 2023 02:21:03 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:6e4c:e3c1:5cb8:b60e]) by smtp.gmail.com with ESMTPSA id e9-20020adfe7c9000000b003197efd1e7bsm5009156wrn.114.2023.09.28.02.21.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Sep 2023 02:21:02 -0700 (PDT) From: Bartosz Golaszewski To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Maximilian Luz , Krzysztof Kozlowski Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, kernel@quicinc.com, Bartosz Golaszewski Subject: [PATCH v2 03/11] firmware: qcom: scm: switch to using the SCM allocator Date: Thu, 28 Sep 2023 11:20:32 +0200 Message-Id: <20230928092040.9420-4-brgl@bgdev.pl> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230928092040.9420-1-brgl@bgdev.pl> References: <20230928092040.9420-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Bartosz Golaszewski We need to allocate, map and pass a buffer to the trustzone if we have more than 4 arguments for a given SCM calls. Let's use the new SCM allocator for that memory and shrink the code in process. Signed-off-by: Bartosz Golaszewski --- drivers/firmware/qcom/qcom_scm-smc.c | 21 ++++----------------- 1 file changed, 4 insertions(+), 17 deletions(-) diff --git a/drivers/firmware/qcom/qcom_scm-smc.c b/drivers/firmware/qcom/qcom_scm-smc.c index 16cf88acfa8e..0d5554df1321 100644 --- a/drivers/firmware/qcom/qcom_scm-smc.c +++ b/drivers/firmware/qcom/qcom_scm-smc.c @@ -2,6 +2,7 @@ /* Copyright (c) 2015,2019 The Linux Foundation. All rights reserved. */ +#include #include #include #include @@ -152,8 +153,7 @@ int __scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc, { int arglen = desc->arginfo & 0xf; int i, ret; - dma_addr_t args_phys = 0; - void *args_virt = NULL; + void *args_virt __free(qcom_scm_mem) = NULL; size_t alloc_len; gfp_t flag = atomic ? GFP_ATOMIC : GFP_KERNEL; u32 smccc_call_type = atomic ? ARM_SMCCC_FAST_CALL : ARM_SMCCC_STD_CALL; @@ -173,7 +173,7 @@ 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); + args_virt = qcom_scm_mem_alloc(PAGE_ALIGN(alloc_len), flag); if (!args_virt) return -ENOMEM; @@ -192,25 +192,12 @@ int __scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc, SCM_SMC_FIRST_EXT_IDX]); } - args_phys = dma_map_single(dev, args_virt, alloc_len, - DMA_TO_DEVICE); - - if (dma_mapping_error(dev, args_phys)) { - kfree(args_virt); - return -ENOMEM; - } - - smc.args[SCM_SMC_LAST_REG_IDX] = args_phys; + smc.args[SCM_SMC_LAST_REG_IDX] = qcom_scm_mem_to_phys(args_virt); } /* ret error check follows after args_virt cleanup*/ ret = __scm_smc_do(dev, &smc, &smc_res, atomic); - if (args_virt) { - dma_unmap_single(dev, args_phys, alloc_len, DMA_TO_DEVICE); - kfree(args_virt); - } - if (ret) return ret;