From patchwork Tue Jan 7 21:04:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elliot Berman X-Patchwork-Id: 11321847 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3F6E4138C for ; Tue, 7 Jan 2020 21:20:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1B32C2077B for ; Tue, 7 Jan 2020 21:20:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="FYkGl1sD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728964AbgAGVT5 (ORCPT ); Tue, 7 Jan 2020 16:19:57 -0500 Received: from mail25.static.mailgun.info ([104.130.122.25]:48290 "EHLO mail25.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729082AbgAGVEo (ORCPT ); Tue, 7 Jan 2020 16:04:44 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1578431084; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=ktTICb0pqeIhsoL9iz0mVGvt/SWbzJYQSsAxmkhWOzU=; b=FYkGl1sDVNM0NMCt98YweZMYfIIBM5EBy6LHqb2+i9UEVyGk6WnhUa/oDRnjMIeaeVtV8ckg ORABYNpZ71RhPeQIzi0mtQXtg6kiNJC4PycH8tNAnTAx31K+purKsahqN5o4777+XwPW4FGs 49lE+hCmayyofBcAr+9QlpYRZLw= X-Mailgun-Sending-Ip: 104.130.122.25 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e14f267.7f4307d08f48-smtp-out-n03; Tue, 07 Jan 2020 21:04:39 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 928FAC447AD; Tue, 7 Jan 2020 21:04:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from eberman-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: eberman) by smtp.codeaurora.org (Postfix) with ESMTPSA id C5842C447AC; Tue, 7 Jan 2020 21:04:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org C5842C447AC Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=eberman@codeaurora.org From: Elliot Berman To: Bjorn Andersson , agross@kernel.org, swboyd@chromium.org, Stephan Gerhold Cc: Elliot Berman , saiprakash.ranjan@codeaurora.org, tsoni@codeaurora.org, sidgup@codeaurora.org, psodagud@codeaurora.org, Brian Masney , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 04/17] firmware: qcom_scm-64: Make SMC macros less magical Date: Tue, 7 Jan 2020 13:04:13 -0800 Message-Id: <1578431066-19600-5-git-send-email-eberman@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1578431066-19600-1-git-send-email-eberman@codeaurora.org> References: <1578431066-19600-1-git-send-email-eberman@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Improve understandability of SMC macros by reversing the logic as they are all functions of how many arguments can be shoved in registers and how many SCM arguments are supported. There aren't 4 register arguments because are 7 arguments that go into a buffer - there are up to 7 arguments that are overflowed into a buffer because only 4 registers are allocated for arguments. Change-Id: Iac0378fc4c5e20943a64b98223d53caa4955dd53 Reviewed-by: Stephen Boyd Tested-by: Brian Masney # arm32 Tested-by: Stephan Gerhold Signed-off-by: Elliot Berman --- drivers/firmware/qcom_scm-64.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/firmware/qcom_scm-64.c b/drivers/firmware/qcom_scm-64.c index 976c2b9..3101f36 100644 --- a/drivers/firmware/qcom_scm-64.c +++ b/drivers/firmware/qcom_scm-64.c @@ -58,9 +58,9 @@ static DEFINE_MUTEX(qcom_scm_lock); #define QCOM_SCM_EBUSY_WAIT_MS 30 #define QCOM_SCM_EBUSY_MAX_RETRY 20 -#define SCM_SMC_N_EXT_ARGS 7 -#define SCM_SMC_FIRST_EXT_IDX 3 -#define SCM_SMC_N_REG_ARGS (MAX_QCOM_SCM_ARGS - SCM_SMC_N_EXT_ARGS + 1) +#define SCM_SMC_N_REG_ARGS 4 +#define SCM_SMC_FIRST_EXT_IDX (SCM_SMC_N_REG_ARGS - 1) +#define SCM_SMC_N_EXT_ARGS (MAX_QCOM_SCM_ARGS - SCM_SMC_N_REG_ARGS + 1) static void __scm_smc_do_quirk(const struct qcom_scm_desc *desc, struct arm_smccc_res *res, u32 fn_id,