From patchwork Thu Jun 28 20:43:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Herring X-Patchwork-Id: 140478 Delivered-To: patch@linaro.org Received: by 2002:a2e:9754:0:0:0:0:0 with SMTP id f20-v6csp28801ljj; Thu, 28 Jun 2018 13:44:07 -0700 (PDT) X-Google-Smtp-Source: ADUXVKJ7jV8PXQ+s0L69hiZWDtl8E1CfdxWHrNw1+2mwMhL97BcFckYj4VNu8rvjE5hGZXUsGHcS X-Received: by 2002:a63:a902:: with SMTP id u2-v6mr9976539pge.67.1530218647427; Thu, 28 Jun 2018 13:44:07 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1530218647; cv=none; d=google.com; s=arc-20160816; b=PcrqpAh3tuY+PKLFIXV+YSv9XGD8PInXeEqbfrrdqaMNwVGZJ6X9TEnDGsQ5CVCF4W i0shvcUZz7yu0E7M8CWGhc5jeihxK6KYp3N9WJioqBCTA8p1yCNM9EVeMwag+0RZIocm dALzrRunDlJucIdJ7wAf/gq4Wh+IDspHR0hggLn8tLRAshbIRfw4bLHktWqYCBMrATo0 EECK6QRcRB3DtWTqGhKBN3BNUUN1Hhwck21fvCltnR0+2tHM9XQdYGPFkLYpYl+aEIrO 8G+1hGDuFftZfvUMBndqpUgNryWgKBQdmxe9sIRnknvfoGNWOBK9CGl3b38dkVk6xsv8 XcDQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=TvhgMc1vG+h7jxLUFvueOcNWWAd/bqD3DtXmxL/ZB5Y=; b=jdhg9KnVc+kYVWPWk81SoLsRq4MCU3svYcZ79XMLF41tWhTRBAHjbxaI7qJAcrN1CX XXYNgMRAk4POP364YMQ4/ZfRvJBGsWQisGyJYDaSbk+fW72wDf/d3wr7YsFyCgXjOawe ajt2CMTHIKSt5nHKR7LbdrDPrxUh2GnmmzQpFFXpk0kvMLkakThPLGhWipJzt+AwQsOv khJjxc9SvaNAU63zj4Oq0KMeVh1iIBAx2XgoPVhzdfqeARHK+AokaP/UpOxG3Yd28Un5 DqhNmjyiY68C1cN+zAd4D67oEdyWrNB3RvMnmGkKJGuyt8vJqna2wap2Tlcy05XGhVnb qmBw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id d191-v6si6673653pga.192.2018.06.28.13.44.07; Thu, 28 Jun 2018 13:44:07 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966108AbeF1UoG (ORCPT + 31 others); Thu, 28 Jun 2018 16:44:06 -0400 Received: from mail-yb0-f195.google.com ([209.85.213.195]:45692 "EHLO mail-yb0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753637AbeF1UoA (ORCPT ); Thu, 28 Jun 2018 16:44:00 -0400 Received: by mail-yb0-f195.google.com with SMTP id h127-v6so2525143ybg.12; Thu, 28 Jun 2018 13:44:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=TvhgMc1vG+h7jxLUFvueOcNWWAd/bqD3DtXmxL/ZB5Y=; b=CJoe87XzMu9VOrOq1oUJWY2hz9HzTYYMAASXn8U4+02z4C3t/9vCwPkV9/JFqaYuhw zRU93zy5oUQ+yft3wBhJ9o19AgnYbbsiOirVW0fOUZezWeTlI2zAkcfv5/PikudXTDFH EQtLTOghwTtaAaNsFyduMXbAs+6c3wG6DdH9tguZvhyj/iL+MZlpWeSW9h7RY084W88P OoVBsJ4a968kF6H4z6Sjc0cQKbX6ifwDsuVvjqtpczF7hgqTf+otBo0lUwuZWshNcJr+ bluXgrupZAHqBuiPM5X1GZA/9nfgexlFn5JLJWh4SrHkEdRpDp2b78EHbGldn0d0nyaT HWCw== X-Gm-Message-State: APt69E1M6qROCoWFjz1xqtc0FdX3G/QGvfz4qAQq7+fFeo+Rky8d9Hkj v1MK+OhB1QVtSdHkh7gFpQ== X-Received: by 2002:a25:5684:: with SMTP id k126-v6mr6121898ybb.170.1530218639710; Thu, 28 Jun 2018 13:43:59 -0700 (PDT) Received: from localhost.localdomain (24-223-123-72.static.usa-companies.net. [24.223.123.72]) by smtp.googlemail.com with ESMTPSA id o7-v6sm427913ywi.32.2018.06.28.13.43.56 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 28 Jun 2018 13:43:58 -0700 (PDT) From: Rob Herring To: Greg Kroah-Hartman , Linus Walleij , Alexander Graf , Bjorn Andersson , "Rafael J. Wysocki" , Kevin Hilman , Ulf Hansson , Joerg Roedel , Robin Murphy , Mark Brown , Frank Rowand Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, boot-architecture@lists.linaro.org, linux-arm-kernel@lists.infradead.org, Kukjin Kim , Krzysztof Kozlowski , Rob Clark , Heiko Stuebner , iommu@lists.linux-foundation.org, linux-samsung-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-rockchip@lists.infradead.org, Will Deacon , Marek Szyprowski , Joerg Roedel Subject: [PATCH v3 5/6] iommu: Remove IOMMU_OF_DECLARE Date: Thu, 28 Jun 2018 14:43:43 -0600 Message-Id: <20180628204344.13973-6-robh@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180628204344.13973-1-robh@kernel.org> References: <20180628204344.13973-1-robh@kernel.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that we use the driver core to stop deferred probe for missing drivers, IOMMU_OF_DECLARE can be removed. This is slightly less optimal than having a list of built-in drivers in that we'll now defer probe twice before giving up. This shouldn't have a significant impact on boot times as past discussions about deferred probe have given no evidence of deferred probe having a substantial impact. Cc: Robin Murphy Cc: Kukjin Kim Cc: Krzysztof Kozlowski Cc: Rob Clark Cc: Heiko Stuebner Cc: Frank Rowand Cc: linux-arm-kernel@lists.infradead.org Cc: iommu@lists.linux-foundation.org Cc: linux-samsung-soc@vger.kernel.org Cc: linux-arm-msm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Cc: devicetree@vger.kernel.org Acked-by: Will Deacon Acked-by: Marek Szyprowski Acked-by: Joerg Roedel Signed-off-by: Rob Herring --- v3: - Also remove linker sections from vmlinux.lds.h drivers/iommu/arm-smmu-v3.c | 2 -- drivers/iommu/arm-smmu.c | 7 ------- drivers/iommu/exynos-iommu.c | 2 -- drivers/iommu/ipmmu-vmsa.c | 3 --- drivers/iommu/msm_iommu.c | 2 -- drivers/iommu/of_iommu.c | 19 +------------------ drivers/iommu/qcom_iommu.c | 2 -- drivers/iommu/rockchip-iommu.c | 2 -- include/asm-generic/vmlinux.lds.h | 2 -- include/linux/of_iommu.h | 4 ---- 10 files changed, 1 insertion(+), 44 deletions(-) -- 2.17.1 diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 1d647104bccc..22bdabd3d8e0 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -2915,8 +2915,6 @@ static struct platform_driver arm_smmu_driver = { }; module_platform_driver(arm_smmu_driver); -IOMMU_OF_DECLARE(arm_smmuv3, "arm,smmu-v3"); - MODULE_DESCRIPTION("IOMMU API for ARM architected SMMUv3 implementations"); MODULE_AUTHOR("Will Deacon "); MODULE_LICENSE("GPL v2"); diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index f7a96bcf94a6..c73cfce1ccc0 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -2211,13 +2211,6 @@ static struct platform_driver arm_smmu_driver = { }; module_platform_driver(arm_smmu_driver); -IOMMU_OF_DECLARE(arm_smmuv1, "arm,smmu-v1"); -IOMMU_OF_DECLARE(arm_smmuv2, "arm,smmu-v2"); -IOMMU_OF_DECLARE(arm_mmu400, "arm,mmu-400"); -IOMMU_OF_DECLARE(arm_mmu401, "arm,mmu-401"); -IOMMU_OF_DECLARE(arm_mmu500, "arm,mmu-500"); -IOMMU_OF_DECLARE(cavium_smmuv2, "cavium,smmu-v2"); - MODULE_DESCRIPTION("IOMMU API for ARM architected SMMU implementations"); MODULE_AUTHOR("Will Deacon "); MODULE_LICENSE("GPL v2"); diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 85879cfec52f..b128cb4372d3 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -1390,5 +1390,3 @@ static int __init exynos_iommu_init(void) return ret; } core_initcall(exynos_iommu_init); - -IOMMU_OF_DECLARE(exynos_iommu_of, "samsung,exynos-sysmmu"); diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index 40ae6e87cb88..f026aa16d5f1 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -1108,9 +1108,6 @@ static void __exit ipmmu_exit(void) subsys_initcall(ipmmu_init); module_exit(ipmmu_exit); -IOMMU_OF_DECLARE(ipmmu_vmsa_iommu_of, "renesas,ipmmu-vmsa"); -IOMMU_OF_DECLARE(ipmmu_r8a7795_iommu_of, "renesas,ipmmu-r8a7795"); - MODULE_DESCRIPTION("IOMMU API for Renesas VMSA-compatible IPMMU"); MODULE_AUTHOR("Laurent Pinchart "); MODULE_LICENSE("GPL v2"); diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c index 0d3350463a3f..27377742600d 100644 --- a/drivers/iommu/msm_iommu.c +++ b/drivers/iommu/msm_iommu.c @@ -877,7 +877,5 @@ static void __exit msm_iommu_driver_exit(void) subsys_initcall(msm_iommu_driver_init); module_exit(msm_iommu_driver_exit); -IOMMU_OF_DECLARE(msm_iommu_of, "qcom,apq8064-iommu"); - MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Stepan Moskovchenko "); diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index 78ddf47dd67a..f7787e757244 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -27,9 +27,6 @@ #define NO_IOMMU 1 -static const struct of_device_id __iommu_of_table_sentinel - __used __section(__iommu_of_table_end); - /** * of_get_dma_window - Parse *dma-window property and returns 0 if found. * @@ -98,19 +95,6 @@ int of_get_dma_window(struct device_node *dn, const char *prefix, int index, } EXPORT_SYMBOL_GPL(of_get_dma_window); -static bool of_iommu_driver_present(struct device_node *np) -{ - /* - * If the IOMMU still isn't ready by the time we reach init, assume - * it never will be. We don't want to defer indefinitely, nor attempt - * to dereference __iommu_of_table after it's been freed. - */ - if (system_state >= SYSTEM_RUNNING) - return false; - - return of_match_node(&__iommu_of_table, np); -} - static int of_iommu_xlate(struct device *dev, struct of_phandle_args *iommu_spec) { @@ -120,8 +104,7 @@ static int of_iommu_xlate(struct device *dev, ops = iommu_ops_from_fwnode(fwnode); if ((ops && !ops->of_xlate) || - !of_device_is_available(iommu_spec->np) || - (!ops && !of_iommu_driver_present(iommu_spec->np))) + !of_device_is_available(iommu_spec->np)) return NO_IOMMU; err = iommu_fwspec_init(dev, &iommu_spec->np->fwnode, ops); diff --git a/drivers/iommu/qcom_iommu.c b/drivers/iommu/qcom_iommu.c index fe88a4880d3a..b48aee82d14b 100644 --- a/drivers/iommu/qcom_iommu.c +++ b/drivers/iommu/qcom_iommu.c @@ -945,7 +945,5 @@ static void __exit qcom_iommu_exit(void) module_init(qcom_iommu_init); module_exit(qcom_iommu_exit); -IOMMU_OF_DECLARE(qcom_iommu_dev, "qcom,msm-iommu-v1"); - MODULE_DESCRIPTION("IOMMU API for QCOM IOMMU v1 implementations"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c index 054cd2c8e9c8..de8d3bf91b23 100644 --- a/drivers/iommu/rockchip-iommu.c +++ b/drivers/iommu/rockchip-iommu.c @@ -1284,8 +1284,6 @@ static int __init rk_iommu_init(void) } subsys_initcall(rk_iommu_init); -IOMMU_OF_DECLARE(rk_iommu_of, "rockchip,iommu"); - MODULE_DESCRIPTION("IOMMU API for Rockchip"); MODULE_AUTHOR("Simon Xue and Daniel Kurtz "); MODULE_ALIAS("platform:rockchip-iommu"); diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index e373e2e10f6a..f173b5f30dbe 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -218,7 +218,6 @@ #define TIMER_OF_TABLES() OF_TABLE(CONFIG_TIMER_OF, timer) #define IRQCHIP_OF_MATCH_TABLE() OF_TABLE(CONFIG_IRQCHIP, irqchip) #define CLK_OF_TABLES() OF_TABLE(CONFIG_COMMON_CLK, clk) -#define IOMMU_OF_TABLES() OF_TABLE(CONFIG_OF_IOMMU, iommu) #define RESERVEDMEM_OF_TABLES() OF_TABLE(CONFIG_OF_RESERVED_MEM, reservedmem) #define CPU_METHOD_OF_TABLES() OF_TABLE(CONFIG_SMP, cpu_method) #define CPUIDLE_METHOD_OF_TABLES() OF_TABLE(CONFIG_CPU_IDLE, cpuidle_method) @@ -601,7 +600,6 @@ CLK_OF_TABLES() \ RESERVEDMEM_OF_TABLES() \ TIMER_OF_TABLES() \ - IOMMU_OF_TABLES() \ CPU_METHOD_OF_TABLES() \ CPUIDLE_METHOD_OF_TABLES() \ KERNEL_DTB() \ diff --git a/include/linux/of_iommu.h b/include/linux/of_iommu.h index 4fa654e4b5a9..f3d40dd7bb66 100644 --- a/include/linux/of_iommu.h +++ b/include/linux/of_iommu.h @@ -32,8 +32,4 @@ static inline const struct iommu_ops *of_iommu_configure(struct device *dev, #endif /* CONFIG_OF_IOMMU */ -extern struct of_device_id __iommu_of_table; - -#define IOMMU_OF_DECLARE(name, compat) OF_DECLARE_1(iommu, name, compat, NULL) - #endif /* __OF_IOMMU_H */