From patchwork Sun Nov 29 23:07:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= X-Patchwork-Id: 1407905 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4Ckkf75KsSz9sTv for ; Mon, 30 Nov 2020 10:12:15 +1100 (AEDT) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.com Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4Ckkf74X4szDqtt for ; Mon, 30 Nov 2020 10:12:15 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=209.85.221.67; helo=mail-wr1-f67.google.com; envelope-from=kswilczynski@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.com Received: from mail-wr1-f67.google.com (mail-wr1-f67.google.com [209.85.221.67]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4CkkY41ssBzDrBk for ; Mon, 30 Nov 2020 10:07:52 +1100 (AEDT) Received: by mail-wr1-f67.google.com with SMTP id e7so13083237wrv.6 for ; Sun, 29 Nov 2020 15:07:51 -0800 (PST) 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=C4ZAbgOviSl5kwTV38A0mgojnuMMJBX6cIDk0sTmaeo=; b=CtF2Wr2xGR/HFEmNzYDkWc8bPGuYpno8smGuDE5Th/yPDEcmi+LG1eOs0LAl/JDMT8 f+Rbuxq38YkKGC0fMs6VO58CJ5jK31t1mMc87X30XItC1zRJ8UyUy28ymz3OyPXPBdci m9tGYTrEjrWjGeYSoGR2qziw5aHJwWJZEN179QC/5HhXfKIBUNZ/mTFIPHtnv2PQ+qp8 o9cmWnfm6f2LHVdolLLRW08x1Ja5X5ht7clgE5zF2L/f8LPmLplb/4uAeedHStoUaYov v3Nzq+taQSj/4J107gtrkNH4KNNNUDCAopHvRzAK1YjATrGoN9lCemWUuv+9PSFlKbeB xQ9A== X-Gm-Message-State: AOAM5335d0FyZ8jIf1X8+oaneF5X0L6t7JUHvqw7jXGkzrkwZkzhe2mW bnvo9kkJawMLEAHAI06Q3ZY= X-Google-Smtp-Source: ABdhPJyc10rS86sUCkCS7JwDecOpIFDWRywvD2p3TPef9gz9BjYexnZrT+fR1+MqL8LVO9fcgPl/QQ== X-Received: by 2002:adf:fd0e:: with SMTP id e14mr24090769wrr.119.1606691269434; Sun, 29 Nov 2020 15:07:49 -0800 (PST) Received: from workstation.lan ([95.155.85.46]) by smtp.gmail.com with ESMTPSA id d2sm24831005wrn.43.2020.11.29.15.07.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 29 Nov 2020 15:07:48 -0800 (PST) From: =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= To: Bjorn Helgaas Subject: [PATCH v6 2/5] PCI: thunder-pem: Add constant for custom ".bus_shit" initialiser Date: Sun, 29 Nov 2020 23:07:40 +0000 Message-Id: <20201129230743.3006978-3-kw@linux.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201129230743.3006978-1-kw@linux.com> References: <20201129230743.3006978-1-kw@linux.com> MIME-Version: 1.0 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Heiko Stuebner , Shawn Lin , Paul Mackerras , Thomas Petazzoni , Jonathan Chocron , Toan Le , Will Deacon , Rob Herring , Lorenzo Pieralisi , Michal Simek , linux-rockchip@lists.infradead.org, bcm-kernel-feedback-list@broadcom.com, Jonathan Derrick , linux-pci@vger.kernel.org, Ray Jui , Florian Fainelli , linux-rpi-kernel@lists.infradead.org, Jonathan Cameron , linux-arm-kernel@lists.infradead.org, Scott Branden , Zhou Wang , Robert Richter , linuxppc-dev@lists.ozlabs.org, Nicolas Saenz Julienne Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Add a custom constant for the ".bus_shit" initialiser to capture a non-standard platform-specific ECAM bus shift value. Standard values otherwise defined in the PCI Express Specification are available in the include/linux/pci-ecam.h. Suggested-by: Bjorn Helgaas Signed-off-by: Krzysztof Wilczyński --- drivers/pci/controller/pci-thunder-pem.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/pci/controller/pci-thunder-pem.c b/drivers/pci/controller/pci-thunder-pem.c index 3f847969143e..1a3f70ac61fc 100644 --- a/drivers/pci/controller/pci-thunder-pem.c +++ b/drivers/pci/controller/pci-thunder-pem.c @@ -19,6 +19,15 @@ #define PEM_CFG_WR 0x28 #define PEM_CFG_RD 0x30 +/* + * Enhanced Configuration Access Mechanism (ECAM) + * + * N.B. This is a non-standard platform-specific ECAM bus shift value. For + * standard values defined in the PCI Express Base Specification see + * include/linux/pci-ecam.h. + */ +#define THUNDER_PCIE_ECAM_BUS_SHIFT 24 + struct thunder_pem_pci { u32 ea_entry[3]; void __iomem *pem_reg_base; @@ -404,7 +413,7 @@ static int thunder_pem_acpi_init(struct pci_config_window *cfg) } const struct pci_ecam_ops thunder_pem_ecam_ops = { - .bus_shift = 24, + .bus_shift = THUNDER_PCIE_ECAM_BUS_SHIFT, .init = thunder_pem_acpi_init, .pci_ops = { .map_bus = pci_ecam_map_bus, @@ -441,7 +450,7 @@ static int thunder_pem_platform_init(struct pci_config_window *cfg) } static const struct pci_ecam_ops pci_thunder_pem_ops = { - .bus_shift = 24, + .bus_shift = THUNDER_PCIE_ECAM_BUS_SHIFT, .init = thunder_pem_platform_init, .pci_ops = { .map_bus = pci_ecam_map_bus,