From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: [PATCH 11/12] devres: implement pcim_iomap_regions() Date: Wed, 27 Dec 2006 00:18:35 +0900 Message-ID: <11671463153699-git-send-email-htejun@gmail.com> References: <1167146313307-git-send-email-htejun@gmail.com> Reply-To: Tejun Heo Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: In-Reply-To: <1167146313307-git-send-email-htejun@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: gregkh@suse.de, jeff@garzik.org, linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org Cc: Tejun Heo List-Id: linux-ide@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 4266638..60d41eb 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -35,6 +35,8 @@ 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 2e058b6..735c38c 100644 --- a/lib/iomap.c +++ b/lib/iomap.c @@ -357,3 +357,56 @@ 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); -- 1.4.4.2