From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932566AbcBPNyE (ORCPT ); Tue, 16 Feb 2016 08:54:04 -0500 Received: from mail-wm0-f43.google.com ([74.125.82.43]:34076 "EHLO mail-wm0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932467AbcBPNx5 (ORCPT ); Tue, 16 Feb 2016 08:53:57 -0500 From: Tomasz Nowicki To: helgaas@kernel.org, arnd@arndb.de, will.deacon@arm.com, catalin.marinas@arm.com, rafael@kernel.org, hanjun.guo@linaro.org, Lorenzo.Pieralisi@arm.com, okaya@codeaurora.org, jiang.liu@linux.intel.com, jchandra@broadcom.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, jcm@redhat.com, Tomasz Nowicki Subject: [PATCH V5 02/15] acpi, pci, mcfg: Provide default RAW ACPI PCI config space accessors. Date: Tue, 16 Feb 2016 14:53:32 +0100 Message-Id: <1455630825-27253-3-git-send-email-tn@semihalf.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1455630825-27253-1-git-send-email-tn@semihalf.com> References: <1455630825-27253-1-git-send-email-tn@semihalf.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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 Tested-by: Duc Dang Tested-by: Dongdong Liu Tested-by: Hanjun Guo Tested-by: Graeme Gregory Tested-by: Sinan Kaya --- drivers/acpi/pci_mcfg.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/acpi/pci_mcfg.c b/drivers/acpi/pci_mcfg.c index ea84365..0467b00 100644 --- a/drivers/acpi/pci_mcfg.c +++ b/drivers/acpi/pci_mcfg.c @@ -21,6 +21,26 @@ static DEFINE_MUTEX(pci_mmcfg_lock); LIST_HEAD(pci_mmcfg_list); +/* + * 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; +} + static void list_add_sorted(struct pci_mmcfg_region *new) { struct pci_mmcfg_region *cfg; -- 1.9.1