From patchwork Tue Jun 7 07:44:01 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 9159981 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 19DE360467 for ; Tue, 7 Jun 2016 07:46:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0B2CD27248 for ; Tue, 7 Jun 2016 07:46:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F2C72281D2; Tue, 7 Jun 2016 07:46:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 866F427248 for ; Tue, 7 Jun 2016 07:46:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752774AbcFGHoN (ORCPT ); Tue, 7 Jun 2016 03:44:13 -0400 Received: from mx2.suse.de ([195.135.220.15]:56839 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751399AbcFGHoM (ORCPT ); Tue, 7 Jun 2016 03:44:12 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id CB79DAC0C; Tue, 7 Jun 2016 07:44:09 +0000 (UTC) From: Johannes Thumshirn To: Bjorn Helgaas Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Christoph Hellwig , Johannes Thumshirn Subject: [PATCH v3 1/6] PCI: Add helpers to request/release memory and I/O regions Date: Tue, 7 Jun 2016 09:44:01 +0200 Message-Id: X-Mailer: git-send-email 1.8.5.6 In-Reply-To: References: In-Reply-To: References: Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add helpers to request and release a device's memory or I/O regions. With these helpers in place, one does not need to select a device's memory or I/O regions with pci_select_bars() prior to requesting or releasing them. Suggested-by: Christoph Hellwig Signed-off-by: Johannes Thumshirn Reviewed-by: Christoph Hellwig Cc: Christoph Hellwig --- include/linux/pci.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/include/linux/pci.h b/include/linux/pci.h index 932ec74..9ee6569 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1401,6 +1401,34 @@ typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode, unsigned int command_bits, u32 flags); void pci_register_set_vga_state(arch_set_vga_state_t func); +static inline int +pci_request_io_regions(struct pci_dev *pdev, const char *name) +{ + return pci_request_selected_regions(pdev, + pci_select_bars(pdev, IORESOURCE_IO), name); +} + +static inline void +pci_release_io_regions(struct pci_dev *pdev) +{ + return pci_release_selected_regions(pdev, + pci_select_bars(pdev, IORESOURCE_IO)); +} + +static inline int +pci_request_mem_regions(struct pci_dev *pdev, const char *name) +{ + return pci_request_selected_regions(pdev, + pci_select_bars(pdev, IORESOURCE_MEM), name); +} + +static inline void +pci_release_mem_regions(struct pci_dev *pdev) +{ + return pci_release_selected_regions(pdev, + pci_select_bars(pdev, IORESOURCE_MEM)); +} + #else /* CONFIG_PCI is not enabled */ static inline void pci_set_flags(int flags) { }