From patchwork Tue Aug 4 12:44:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Alex_Benn=C3=A9e?= X-Patchwork-Id: 1340860 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=T8YDxwS+; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BLZHs4N6Cz9sTK for ; Tue, 4 Aug 2020 22:46:17 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725932AbgHDMqK (ORCPT ); Tue, 4 Aug 2020 08:46:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728322AbgHDMoa (ORCPT ); Tue, 4 Aug 2020 08:44:30 -0400 Received: from mail-wm1-x344.google.com (mail-wm1-x344.google.com [IPv6:2a00:1450:4864:20::344]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 67D46C0617A1 for ; Tue, 4 Aug 2020 05:44:24 -0700 (PDT) Received: by mail-wm1-x344.google.com with SMTP id 184so2790051wmb.0 for ; Tue, 04 Aug 2020 05:44:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=bN3d8Ia77BH2nBiHDQ6zBNPByWQO01hAGf1Nc3k/FjU=; b=T8YDxwS+GAi/l87EqEDVnHA6L2vWdoJLRomogp4zswguktwRhtfY6a3S80oC+la+7Y uBOGZPkWUazcUyhEPQsfO3QZ16muTbOfxNxa4uXdYwfXdmkfVzoMRSW4m/T7f0i4RLf7 dX+k8C7kUSi09yoGq/WkXRUuQWQIUOu80qSJ8B9K9QLhl5toYoFUrNUqUcTwdRw8GrmH fMUA0SnmjEveRBv57i02a+TxYyxNXCrEDBzYs7JuFuOONWrjDdCFY0ND5r47wpeLc24V fJMl0bur8BNgusZj++pQeoEnXBDmf1q7b4PbFj3Wzq0ri29fof8CCFp8ai4icK9pDdY1 JhtQ== 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:mime-version:content-transfer-encoding; bh=bN3d8Ia77BH2nBiHDQ6zBNPByWQO01hAGf1Nc3k/FjU=; b=LZwCiyGMQGrKtHNN22v8lqd64ACLv9Twbv3X9b2yrlNXX2IOpHHWKwxJtJQI344tAO q4tvYDmA2QUoeYG0dN5Km+nBfpw2Z9iSgP6dctxRr+Qel9lsYVCKVDbPtuWtIIor9aWO SWheKOWpqnGR5Lxn8OoudMj9moKy+8gjiMKtSmGwRlXXaFsSq/n3Hqvps53veFMjzUDV eSZcXu2Y11OIGIkKEPFkuwxsmmF861l0YQhJ/7pMx+tTFg9AY8QxgBrpYVEW6IXx/y5i uLMKUK6uN1UwO+xzrzUJKfMQrs1iZ1VDuoandJTUhiI0z+KOcPmevAb3QEh7Ai93vAj2 tOCA== X-Gm-Message-State: AOAM530DXgjS7sLVfn3ZtyHTbYtdmhk9U50G/L84ztd279DS0qNI29ds bHh8Hdy6FZFkRkr2KtL+YegN0A== X-Google-Smtp-Source: ABdhPJz9A0fUr0s+57vaSQaPT8GQEVwMIBWtT6cib6RQGYxAGZypLJ4R2NHV8/yEEKGRo0R1n0bqCQ== X-Received: by 2002:a7b:c257:: with SMTP id b23mr3829607wmj.164.1596545062751; Tue, 04 Aug 2020 05:44:22 -0700 (PDT) Received: from zen.linaroharston ([51.148.130.216]) by smtp.gmail.com with ESMTPSA id b137sm4843577wmb.9.2020.08.04.05.44.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Aug 2020 05:44:18 -0700 (PDT) Received: from zen.lan (localhost [127.0.0.1]) by zen.linaroharston (Postfix) with ESMTP id 860581FF87; Tue, 4 Aug 2020 13:44:17 +0100 (BST) From: =?utf-8?q?Alex_Benn=C3=A9e?= To: kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, kvmarm@lists.cs.columbia.edu, christoffer.dall@arm.com, maz@kernel.org, =?utf-8?q?Alex_Benn=C3=A9e?= , Robert Richter , linux-pci@vger.kernel.org Subject: [PATCH v1 1/3] arm64: allow de-selection of ThunderX PCI controllers Date: Tue, 4 Aug 2020 13:44:15 +0100 Message-Id: <20200804124417.27102-2-alex.bennee@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200804124417.27102-1-alex.bennee@linaro.org> References: <20200804124417.27102-1-alex.bennee@linaro.org> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org For a pure VirtIO guest bringing in all the PCI quirk handling adds a significant amount of bloat to kernel we don't need. Solve this by adding a CONFIG symbol for the ThunderX PCI devices and allowing it to be turned off. Saving over 300k from the uncompressed vmlinux: -rwxr-xr-x 1 alex alex 85652472 Aug 3 16:48 vmlinux* -rwxr-xr-x 1 alex alex 86033880 Aug 3 16:39 vmlinux.orig* Signed-off-by: Alex Bennée Cc: Robert Richter Cc: linux-pci@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org --- arch/arm64/Kconfig.platforms | 2 ++ arch/arm64/configs/defconfig | 1 + drivers/pci/controller/Kconfig | 7 +++++++ drivers/pci/controller/Makefile | 4 ++-- 4 files changed, 12 insertions(+), 2 deletions(-) diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms index 8dd05b2a925c..a328eebdaa59 100644 --- a/arch/arm64/Kconfig.platforms +++ b/arch/arm64/Kconfig.platforms @@ -253,12 +253,14 @@ config ARCH_SPRD config ARCH_THUNDER bool "Cavium Inc. Thunder SoC Family" + select PCI_THUNDER help This enables support for Cavium's Thunder Family of SoCs. config ARCH_THUNDER2 bool "Cavium ThunderX2 Server Processors" select GPIOLIB + select PCI_THUNDER help This enables support for Cavium's ThunderX2 CN99XX family of server processors. diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 2ca7ba69c318..d840cba99941 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -199,6 +199,7 @@ CONFIG_PCI_HOST_GENERIC=y CONFIG_PCI_XGENE=y CONFIG_PCIE_ALTERA=y CONFIG_PCIE_ALTERA_MSI=y +CONFIG_PCI_THUNDER=y CONFIG_PCI_HOST_THUNDER_PEM=y CONFIG_PCI_HOST_THUNDER_ECAM=y CONFIG_PCIE_ROCKCHIP_HOST=m diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig index adddf21fa381..28335ffa5d48 100644 --- a/drivers/pci/controller/Kconfig +++ b/drivers/pci/controller/Kconfig @@ -286,6 +286,13 @@ config PCI_LOONGSON Say Y here if you want to enable PCI controller support on Loongson systems. +config PCI_THUNDER + bool "Thunder X PCIE controllers" + depends on ARM64 + select PCI_QUIRKS + help + Say Y here to enable ThunderX ECAM and PEM PCI controllers. + source "drivers/pci/controller/dwc/Kconfig" source "drivers/pci/controller/mobiveil/Kconfig" source "drivers/pci/controller/cadence/Kconfig" diff --git a/drivers/pci/controller/Makefile b/drivers/pci/controller/Makefile index efd9733ead26..8fad4781a5d3 100644 --- a/drivers/pci/controller/Makefile +++ b/drivers/pci/controller/Makefile @@ -45,8 +45,8 @@ obj-y += mobiveil/ # ARM64 and use internal ifdefs to only build the pieces we need # depending on whether ACPI, the DT driver, or both are enabled. +obj-$(CONFIG_PCI_THUNDER) += pci-thunder-ecam.o +obj-$(CONFIG_PCI_THUNDER) += pci-thunder-pem.o ifdef CONFIG_PCI -obj-$(CONFIG_ARM64) += pci-thunder-ecam.o -obj-$(CONFIG_ARM64) += pci-thunder-pem.o obj-$(CONFIG_ARM64) += pci-xgene.o endif