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[213.17.239.108]) by smtp.gmail.com with ESMTPSA id w8sm12238889wjx.21.2016.02.04.09.28.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 04 Feb 2016 09:29:01 -0800 (PST) From: Tomasz Nowicki To: bhelgaas@google.com, arnd@arndb.de, will.deacon@arm.com, catalin.marinas@arm.com, rjw@rjwysocki.net, hanjun.guo@linaro.org, Lorenzo.Pieralisi@arm.com, okaya@codeaurora.org, jiang.liu@linux.intel.com, Stefano.Stabellini@eu.citrix.com Cc: robert.richter@caviumnetworks.com, mw@semihalf.com, Liviu.Dudau@arm.com, ddaney@caviumnetworks.com, wangyijing@huawei.com, Suravee.Suthikulpanit@amd.com, msalter@redhat.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linaro-acpi@lists.linaro.org, jchandra@broadcom.com, jcm@redhat.com, Tomasz Nowicki Subject: [PATCH V4 04/23] x86, pci: mmconfig_{32, 64}.c code refactoring - remove code duplication. Date: Thu, 4 Feb 2016 18:28:42 +0100 Message-Id: <1454606941-9523-5-git-send-email-tn@semihalf.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1454606941-9523-1-git-send-email-tn@semihalf.com> References: <1454606941-9523-1-git-send-email-tn@semihalf.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org mmconfig_64.c version is going to be default implementation for low-level operation on mmconfig regions. However, now it initializes raw_pci_ext_ops pointer which is specific for x86 only. Moreover, mmconfig_32.c is doing the same thing at the same time. So lets 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 Tested-by: Suravee Suthikulpanit Tested-by: Jeremy Linton Tested-by: Duc Dang Tested-by: Dongdong Liu Tested-by: Hanjun Guo Tested-by: Graeme Gregory Tested-by: Sinan Kaya --- arch/x86/include/asm/pci_x86.h | 5 +++++ arch/x86/pci/mmconfig-shared.c | 10 ++++++++-- arch/x86/pci/mmconfig_32.c | 10 ++-------- arch/x86/pci/mmconfig_64.c | 11 ++--------- 4 files changed, 17 insertions(+), 19 deletions(-) diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h index 0281d2d..26e7dd4 100644 --- a/arch/x86/include/asm/pci_x86.h +++ b/arch/x86/include/asm/pci_x86.h @@ -129,6 +129,11 @@ extern void pci_mmcfg_arch_unmap(struct pci_mmcfg_region *cfg); extern int pci_mmconfig_insert(struct device *dev, u16 seg, u8 start, u8 end, phys_addr_t addr); +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); + /* * On AMD Fam10h CPUs, all PCI MMIO configuration space accesses must use * %eax. No other source or target registers may be used. The following diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c index ce2c2e4..980f304 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 const char *__init pci_mmcfg_e7520(void) { u32 win; @@ -512,9 +517,10 @@ 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 246f135..2ded56f 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; @@ -89,7 +89,7 @@ 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; @@ -126,15 +126,9 @@ 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 b14fcd3..d0c48eb 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; @@ -59,7 +59,7 @@ 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; @@ -91,11 +91,6 @@ 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; @@ -121,8 +116,6 @@ int __init pci_mmcfg_arch_init(void) return 0; } - raw_pci_ext_ops = &pci_mmcfg; - return 1; }