From patchwork Thu Jun 8 07:10:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephan Gerhold X-Patchwork-Id: 13271682 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 ACBFFC7EE45 for ; Thu, 8 Jun 2023 07:11:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235392AbjFHHLm (ORCPT ); Thu, 8 Jun 2023 03:11:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234860AbjFHHLX (ORCPT ); Thu, 8 Jun 2023 03:11:23 -0400 Received: from mo4-p03-ob.smtp.rzone.de (mo4-p03-ob.smtp.rzone.de [81.169.146.173]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CE4091BF7; Thu, 8 Jun 2023 00:11:16 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1686208273; cv=none; d=strato.com; s=strato-dkim-0002; b=cHyUcK6Q2piv2uaBXSqbjUXNHJvIKxOfYT2p6T0nyS9t5UtgOG+C0d1ggv6IHGrDng dKmuwCBEQc/DNFFwhBJL9FV3K+kMCq+NYWr81bWgZgMf3C2pG6qfxEyNIL85VBlsaj3L JsoiJMK/dF1T9S6V/6xJBouKy1pxf9a8L4xlryxqSPyLZDWwvfuCWUGQlIuCF0HPwsaD BO/0Q1h6iSV4P6LxiRUwLMSsl2kTHyVGMum7Zlw6bYWiyzgtMA2QRaJyv5wnYRHA7rFv 77Y1WuVzB/FX7NOtFRMrqpjtFaWWIEtZ4FYsjDwbHWdlSA3DPXWDUAmZfHPzYhZnNLSm OQrQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; t=1686208273; s=strato-dkim-0002; d=strato.com; h=Cc:To:In-Reply-To:References:Message-Id:Subject:Date:From:Cc:Date: From:Subject:Sender; bh=K48pbbaDvIU0qCx1fn2eZU+dBmyCQ+5LoqGBbasUvkc=; b=CzIK6SuqxcNyL0uaG3pGGQby2vw10zcWivynrDCtzErjBSjL7ybCy0qxai7QTOiYJW O9mUknOhHo0hcQ9R64/rq6X8E/XUE0oxuZX3/LV7XI+KBIU7OY+57XH7AMn1BOiaGIfz D+HClwzmRI53CSlpSmOlvVxIG6Qy2v4uIsfJWAI0/3kgAYJx7QSUPVGO8UxO4AVFhAlx Nk/x3NCYKKyUp7mmfctBjJbQGgxABs2UFvCpRyEbglESKrABia/y4W5AFXNUbNDpS0KB 0UKo+n7AlGXezBMxNYIPpFLBEGI4y4uZTzqStEDIAOzGslc0rL2EJLnAxWgczsG3E5AK FdOg== ARC-Authentication-Results: i=1; strato.com; arc=none; dkim=none X-RZG-CLASS-ID: mo03 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1686208273; s=strato-dkim-0002; d=gerhold.net; h=Cc:To:In-Reply-To:References:Message-Id:Subject:Date:From:Cc:Date: From:Subject:Sender; bh=K48pbbaDvIU0qCx1fn2eZU+dBmyCQ+5LoqGBbasUvkc=; b=MHAoi2GR04BgvERD04BLA2SQeze+OCH1wnhsCMomEXGFqNWOXCPmweqHqICXWg4Z6L IutTEOXmA+WSFFRE4GeTkwKuGSR9mqIx053lpZ2Hk7Sk1Vj8XhWZ0aOcK8aDt90jiKDe tFMADLuF7CtKJnlgmxgdCmf3+eKc/MLhcrFwSdrzAix1S9UrODABmg7FhB5dbaKY4w2c F3JOxhkEse6frv4JkZmPxjZ3ECtZ0MNywvPTk9Z5EEhzFAK04VvhAM7/ETzUmlqz8knv VCUP6z8HNRz9q0sgIiUdiX0IhYb9CQNWYVj2gfHdExb/sEV3S7211g/EDNkJTgLKClto qbpQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; t=1686208273; s=strato-dkim-0003; d=gerhold.net; h=Cc:To:In-Reply-To:References:Message-Id:Subject:Date:From:Cc:Date: From:Subject:Sender; bh=K48pbbaDvIU0qCx1fn2eZU+dBmyCQ+5LoqGBbasUvkc=; b=rj4Df+27RvIvziV5MOheWc4T9gT8uYZSVMKJsYQACDNQBYHuSuo0/gYVvu9c7pJwj4 R043Uth+CoSbZKhsa1CQ== X-RZG-AUTH: ":P3gBZUipdd93FF5ZZvYFPugejmSTVR2nRPhVOQjVd4CteZ/7jYgS+mLFY+H0JAn8u4ly9TY=" Received: from [192.168.244.3] by smtp.strato.de (RZmta 49.5.3 DYNA|AUTH) with ESMTPSA id Z82ec2z587BDKHz (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Thu, 8 Jun 2023 09:11:13 +0200 (CEST) From: Stephan Gerhold Date: Thu, 08 Jun 2023 09:10:26 +0200 Subject: [PATCH v2 06/12] soc: qcom: smem: Add qcom_smem_is_available() MIME-Version: 1.0 Message-Id: <20230531-rpm-rproc-v2-6-56a4a00c8260@gerhold.net> References: <20230531-rpm-rproc-v2-0-56a4a00c8260@gerhold.net> In-Reply-To: <20230531-rpm-rproc-v2-0-56a4a00c8260@gerhold.net> To: Bjorn Andersson Cc: Andy Gross , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Mathieu Poirier , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-remoteproc@vger.kernel.org, Stephan Gerhold X-Mailer: b4 0.12.2 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Avoid having to look up a dummy item from SMEM to detect if it is already available or if we need to defer probing. Reviewed-by: Konrad Dybcio Signed-off-by: Stephan Gerhold --- drivers/soc/qcom/smem.c | 11 +++++++++++ include/linux/soc/qcom/smem.h | 1 + 2 files changed, 12 insertions(+) diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c index b0d59e815c3b..29193151cf4c 100644 --- a/drivers/soc/qcom/smem.c +++ b/drivers/soc/qcom/smem.c @@ -359,6 +359,17 @@ static struct qcom_smem *__smem; /* Timeout (ms) for the trylock of remote spinlocks */ #define HWSPINLOCK_TIMEOUT 1000 +/** + * qcom_smem_is_available() - Check if SMEM is available + * + * Return: true if SMEM is available, false otherwise. + */ +bool qcom_smem_is_available(void) +{ + return !!__smem; +} +EXPORT_SYMBOL(qcom_smem_is_available); + static int qcom_smem_alloc_private(struct qcom_smem *smem, struct smem_partition *part, unsigned item, diff --git a/include/linux/soc/qcom/smem.h b/include/linux/soc/qcom/smem.h index 223db6a9c733..a36a3b9d4929 100644 --- a/include/linux/soc/qcom/smem.h +++ b/include/linux/soc/qcom/smem.h @@ -4,6 +4,7 @@ #define QCOM_SMEM_HOST_ANY -1 +bool qcom_smem_is_available(void); int qcom_smem_alloc(unsigned host, unsigned item, size_t size); void *qcom_smem_get(unsigned host, unsigned item, size_t *size);