From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964769AbXAJFiv (ORCPT ); Wed, 10 Jan 2007 00:38:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932611AbXAJFiZ (ORCPT ); Wed, 10 Jan 2007 00:38:25 -0500 Received: from ug-out-1314.google.com ([66.249.92.169]:26779 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932669AbXAJFgD (ORCPT ); Wed, 10 Jan 2007 00:36:03 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:cc:subject:in-reply-to:x-mailer:date:message-id:mime-version:content-type:reply-to:to:content-transfer-encoding:from; b=XRs6dB5r6VBFthbqF0YqK6Y5Gl5hIng99YmznrPbaxptyLyfkshMxTxm5XjxPCO1/7t271UqpqhB3RUSOUYYAvL1shlVWPJthYzjPMxHp6HrgKoLIbQeo0sBcMXUOfxODoPPyQHcIj2qqQWF0RrbuDWWv4pQ96szv/37gKM+dtk= Cc: Tejun Heo Subject: [PATCH 12/13] devres: implement pcim_iomap_regions() In-Reply-To: <11684073353213-git-send-email-htejun@gmail.com> X-Mailer: git-send-email Date: Wed, 10 Jan 2007 14:35:38 +0900 Message-Id: <1168407338988-git-send-email-htejun@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Reply-To: Tejun Heo To: jgarzik@pobox.com, gregkh@suse.de, alan@lxorguk.ukuu.org.uk, linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, htejun@gmail.com Content-Transfer-Encoding: 7BIT From: Tejun Heo Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Implement pcim_iomap_regions(). This function takes mask of BARs to request and iomap. No BAR should have length of zero. BARs are iomapped using pcim_iomap_table(). Signed-off-by: Tejun Heo --- include/linux/io.h | 2 + lib/iomap.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 55 insertions(+), 0 deletions(-) diff --git a/include/linux/io.h b/include/linux/io.h index f5edf9c..45a9c94 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -45,6 +45,8 @@ void __iomem * pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); void __iomem * const * pcim_iomap_table(struct pci_dev *pdev); +int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name); + /** * check_signature - find BIOS signatures * @io_addr: mmio address to check diff --git a/lib/iomap.c b/lib/iomap.c index 3214028..4990c73 100644 --- a/lib/iomap.c +++ b/lib/iomap.c @@ -498,3 +498,56 @@ void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr) WARN_ON(1); } EXPORT_SYMBOL(pcim_iounmap); + +/** + * pcim_iomap_regions - Request and iomap PCI BARs + * @pdev: PCI device to map IO resources for + * @mask: Mask of BARs to request and iomap + * @name: Name used when requesting regions + * + * Request and iomap regions specified by @mask. + */ +int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name) +{ + void __iomem * const *iomap; + int i, rc; + + iomap = pcim_iomap_table(pdev); + if (!iomap) + return -ENOMEM; + + for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { + unsigned long len; + + if (!(mask & (1 << i))) + continue; + + rc = -EINVAL; + len = pci_resource_len(pdev, i); + if (!len) + goto err_inval; + + rc = pci_request_region(pdev, i, name); + if (rc) + goto err_region; + + rc = -ENOMEM; + if (!pcim_iomap(pdev, i, 0)) + goto err_iomap; + } + + return 0; + + err_iomap: + pcim_iounmap(pdev, iomap[i]); + err_region: + pci_release_region(pdev, i); + err_inval: + while (--i >= 0) { + pcim_iounmap(pdev, iomap[i]); + pci_release_region(pdev, i); + } + + return rc; +} +EXPORT_SYMBOL(pcim_iomap_regions); -- 1.4.4.3