Messages in this thread Patch in this message | | | Date | Tue, 11 Mar 2008 19:51:38 +0900 | From | Tejun Heo <> | Subject | [PATCH] devres: implement pcim_iomap_regions_request_all() |
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Some drivers need to reserve all PCI BARs to prevent other drivers misusing unoccupied BARs. pcim_iomap_regions_request_all() requests all BARs and iomap specified BARs.
Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Jeff Garzik <jeff@garzik.org> --- After acked, it's probably best to push this through libata-dev as that's the only user for now.
Thanks.
lib/devres.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)
Index: work/lib/devres.c =================================================================== --- work.orig/lib/devres.c +++ work/lib/devres.c @@ -298,6 +298,31 @@ int pcim_iomap_regions(struct pci_dev *p EXPORT_SYMBOL(pcim_iomap_regions); /** + * pcim_iomap_regions_request_all - Request all BARs and iomap specified ones + * @pdev: PCI device to map IO resources for + * @mask: Mask of BARs to iomap + * @name: Name used when requesting regions + * + * Request all PCI BARs and iomap regions specified by @mask. + */ +int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask, + const char *name) +{ + int request_mask = ((1 << 6) - 1) & ~mask; + int rc; + + rc = pci_request_selected_regions(pdev, request_mask, name); + if (rc) + return rc; + + rc = pcim_iomap_regions(pdev, mask, name); + if (rc) + pci_release_selected_regions(pdev, request_mask); + return rc; +} +EXPORT_SYMBOL(pcim_iomap_regions_request_all); + +/** * pcim_iounmap_regions - Unmap and release PCI BARs * @pdev: PCI device to map IO resources for * @mask: Mask of BARs to unmap and release
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