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| author | Tejun Heo <htejun@gmail.com> | 2008-03-12 15:26:34 +0900 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2008-03-17 08:26:44 -0400 |
| commit | 916fbfb7ae5f8c8f86399794d89e6d273df8826b (patch) | |
| tree | 0b3982923e2b4114b83f67cfca9b950004caef9c /lib/devres.c | |
| parent | 233f112042d0b50170212dbff99c3b34b8773cd3 (diff) | |
| download | lwn-916fbfb7ae5f8c8f86399794d89e6d273df8826b.tar.gz lwn-916fbfb7ae5f8c8f86399794d89e6d273df8826b.zip | |
devres: implement pcim_iomap_regions_request_all()
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>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'lib/devres.c')
| -rw-r--r-- | lib/devres.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/lib/devres.c b/lib/devres.c index b1d336ce7f3d..edc27a5d1b73 100644 --- a/lib/devres.c +++ b/lib/devres.c @@ -298,6 +298,31 @@ int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name) 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 |