From patchwork Tue May 26 12:49:20 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hanjun Guo X-Patchwork-Id: 6479921 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 157BC9F38C for ; Tue, 26 May 2015 12:56:07 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 233D8204A7 for ; Tue, 26 May 2015 12:56:06 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id ABC95205EC for ; Tue, 26 May 2015 12:56:03 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YxELy-0005aJ-KX; Tue, 26 May 2015 12:53:06 +0000 Received: from mail-pa0-f42.google.com ([209.85.220.42]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YxEJw-0004Nm-EJ for linux-arm-kernel@lists.infradead.org; Tue, 26 May 2015 12:51:01 +0000 Received: by padbw4 with SMTP id bw4so92200049pad.0 for ; Tue, 26 May 2015 05:50:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=JrrD/aeI8YsedhsFq8/bAmRnT80yvdMUDMEcrXVdtsk=; b=MhYYKZCzbpxEGMv0EqphYI0KFG1F1aOY3jeF2ogtWs6+tqskBFQAFrDEXwYKehl7N2 qyezrMnxJ2LWE80Afe/0bn9+tP0zw2Q8KRqsXE9/Qaz/gkRTRHihEUkQq58ha8iRf2/A fM0iKOAvajE4qRW9ZNuaKSgPFSFhXZg+uwdmIjvarmVzHlvCfw2uXa8LBwrnU5LL7e5r /ZG6bME7EoeF5EdAwHx3Z9QfslCCKKWXc2FZ3F9NwH6v1t7+5iB6THC385kAWvjGY53z D72crIiWVS/3LI2pkvADcHxY8txUB3hOvZnLGfIvFzhb6Aa/Am4ru3sntWhuhZ7nUXP9 I3nw== X-Gm-Message-State: ALoCoQlxYPf6LcKYdiDqPpTGAJc7M6ablcfQyF7a4uGPP5oxfLvNYehcxj2L2rlUdloT6Wc4UCUg X-Received: by 10.66.55.105 with SMTP id r9mr48853071pap.143.1432644639097; Tue, 26 May 2015 05:50:39 -0700 (PDT) Received: from localhost ([180.150.153.56]) by mx.google.com with ESMTPSA id ie3sm13014882pbb.49.2015.05.26.05.50.37 (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Tue, 26 May 2015 05:50:38 -0700 (PDT) From: Hanjun Guo To: Bjorn Helgaas , Arnd Bergmann , Catalin Marinas , Will Deacon , "Rafael J. Wysocki" Subject: [PATCH 07/11] x86, pci: mmconfig_{32, 64}.c code refactoring - remove code duplication. Date: Tue, 26 May 2015 20:49:20 +0800 Message-Id: <1432644564-24746-8-git-send-email-hanjun.guo@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1432644564-24746-1-git-send-email-hanjun.guo@linaro.org> References: <1432644564-24746-1-git-send-email-hanjun.guo@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150526_055100_595082_45055F87 X-CRM114-Status: GOOD ( 14.46 ) X-Spam-Score: -0.7 (/) Cc: Lorenzo Pieralisi , linaro-acpi@lists.linaro.org, linux-pci@vger.kernel.org, Liviu Dudau , linux-kernel@vger.kernel.org, Tomasz Nowicki , linux-acpi@vger.kernel.org, Hanjun Guo , Suravee Suthikulpanit , Mark Salter , Yijing Wang , Thomas Gleixner , Jiang Liu , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Tomasz Nowicki mmconfig_64.c version is going to be default implementation for arch agnostic low-level direct PCI config space accessors for ECAM dirver. However, now it initialize raw_pci_ext_ops pointer which is x86 specific code only. Moreover, mmconfig_32.c is doing the same thing at the same time. Move it to mmconfig_shared.c so it becomes common for both and mmconfig_64.c turns out to be purely arch agnostic. Signed-off-by: Tomasz Nowicki Signed-off-by: Hanjun Guo Tested-by: Suravee Suthikulpanit --- arch/x86/pci/mmconfig-shared.c | 10 ++++++++-- arch/x86/pci/mmconfig_32.c | 10 ++-------- arch/x86/pci/mmconfig_64.c | 11 ++--------- include/linux/ecam.h | 5 +++++ 4 files changed, 17 insertions(+), 19 deletions(-) diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c index 6fa3080..8938db3 100644 --- a/arch/x86/pci/mmconfig-shared.c +++ b/arch/x86/pci/mmconfig-shared.c @@ -29,6 +29,11 @@ static bool pci_mmcfg_running_state; static bool pci_mmcfg_arch_init_failed; +const struct pci_raw_ops pci_mmcfg = { + .read = pci_mmcfg_read, + .write = pci_mmcfg_write, +}; + static u32 pci_mmconfig_amd_read(int len, void __iomem *addr) { @@ -555,9 +560,10 @@ static void __init __pci_mmcfg_init(int early) } } - if (pci_mmcfg_arch_init()) + if (pci_mmcfg_arch_init()) { + raw_pci_ext_ops = &pci_mmcfg; pci_probe = (pci_probe & ~PCI_PROBE_MASK) | PCI_PROBE_MMCONF; - else { + } else { free_all_mmcfg(); pci_mmcfg_arch_init_failed = true; } diff --git a/arch/x86/pci/mmconfig_32.c b/arch/x86/pci/mmconfig_32.c index 5cf6291..7a050cb 100644 --- a/arch/x86/pci/mmconfig_32.c +++ b/arch/x86/pci/mmconfig_32.c @@ -50,7 +50,7 @@ static void pci_exp_set_dev_base(unsigned int base, int bus, int devfn) } } -static int pci_mmcfg_read(unsigned int seg, unsigned int bus, +int pci_mmcfg_read(unsigned int seg, unsigned int bus, unsigned int devfn, int reg, int len, u32 *value) { unsigned long flags; @@ -79,7 +79,7 @@ err: *value = -1; return 0; } -static int pci_mmcfg_write(unsigned int seg, unsigned int bus, +int pci_mmcfg_write(unsigned int seg, unsigned int bus, unsigned int devfn, int reg, int len, u32 value) { unsigned long flags; @@ -106,15 +106,9 @@ static int pci_mmcfg_write(unsigned int seg, unsigned int bus, return 0; } -const struct pci_raw_ops pci_mmcfg = { - .read = pci_mmcfg_read, - .write = pci_mmcfg_write, -}; - int __init pci_mmcfg_arch_init(void) { printk(KERN_INFO "PCI: Using MMCONFIG for extended config space\n"); - raw_pci_ext_ops = &pci_mmcfg; return 1; } diff --git a/arch/x86/pci/mmconfig_64.c b/arch/x86/pci/mmconfig_64.c index b62ff18..fd857ea 100644 --- a/arch/x86/pci/mmconfig_64.c +++ b/arch/x86/pci/mmconfig_64.c @@ -25,7 +25,7 @@ static char __iomem *pci_dev_base(unsigned int seg, unsigned int bus, unsigned i return NULL; } -static int pci_mmcfg_read(unsigned int seg, unsigned int bus, +int pci_mmcfg_read(unsigned int seg, unsigned int bus, unsigned int devfn, int reg, int len, u32 *value) { char __iomem *addr; @@ -49,7 +49,7 @@ err: *value = -1; return 0; } -static int pci_mmcfg_write(unsigned int seg, unsigned int bus, +int pci_mmcfg_write(unsigned int seg, unsigned int bus, unsigned int devfn, int reg, int len, u32 value) { char __iomem *addr; @@ -71,11 +71,6 @@ static int pci_mmcfg_write(unsigned int seg, unsigned int bus, return 0; } -const struct pci_raw_ops pci_mmcfg = { - .read = pci_mmcfg_read, - .write = pci_mmcfg_write, -}; - static void __iomem *mcfg_ioremap(struct pci_mmcfg_region *cfg) { void __iomem *addr; @@ -101,8 +96,6 @@ int __init pci_mmcfg_arch_init(void) return 0; } - raw_pci_ext_ops = &pci_mmcfg; - return 1; } diff --git a/include/linux/ecam.h b/include/linux/ecam.h index 2387df5..fba5d6b 100644 --- a/include/linux/ecam.h +++ b/include/linux/ecam.h @@ -47,5 +47,10 @@ extern struct list_head pci_mmcfg_list; #define PCI_MMCFG_BUS_OFFSET(bus) ((bus) << 20) +int pci_mmcfg_read(unsigned int seg, unsigned int bus, + unsigned int devfn, int reg, int len, u32 *value); +int pci_mmcfg_write(unsigned int seg, unsigned int bus, + unsigned int devfn, int reg, int len, u32 value); + #endif /* __KERNEL__ */ #endif /* __ECAM_H */