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[213.17.239.108]) by smtp.gmail.com with ESMTPSA id y124sm8858741wmg.3.2016.01.13.05.21.30 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 13 Jan 2016 05:21:31 -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, tglx@linutronix.de, 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 V3 07/21] pci, acpi, mcfg: Provide default RAW ACPI PCI config space accessors. Date: Wed, 13 Jan 2016 14:20:53 +0100 Message-Id: <1452691267-32240-8-git-send-email-tn@semihalf.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1452691267-32240-1-git-send-email-tn@semihalf.com> References: <1452691267-32240-1-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 Lets keep RAW ACPI PCI config space accessors empty by default, since we are note sure if they are necessary accross all archs. Once we sort this out, we can provide generic version or let architectures to overwrite, like now x86. Suggested-by: Lorenzo Pieralisi Signed-off-by: Tomasz Nowicki Tested-by: Suravee Suthikulpanit Tested-by: Jeremy Linton --- drivers/acpi/mcfg.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/acpi/mcfg.c b/drivers/acpi/mcfg.c index 745b83e..3e1e7be 100644 --- a/drivers/acpi/mcfg.c +++ b/drivers/acpi/mcfg.c @@ -9,9 +9,30 @@ #include #include +#include #define PREFIX "MCFG: " +/* + * raw_pci_read/write - raw ACPI PCI config space accessors. + * + * By defauly (__weak) these accessors are empty and should be overwritten + * by architectures which support operations on ACPI PCI_Config regions, + * see osl.c file. + */ + +int __weak raw_pci_read(unsigned int domain, unsigned int bus, + unsigned int devfn, int reg, int len, u32 *val) +{ + return PCIBIOS_DEVICE_NOT_FOUND; +} + +int __weak raw_pci_write(unsigned int domain, unsigned int bus, + unsigned int devfn, int reg, int len, u32 val) +{ + return PCIBIOS_DEVICE_NOT_FOUND; +} + int __init acpi_parse_mcfg(struct acpi_table_header *header) { struct acpi_table_mcfg *mcfg;