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authorTejun Heo <htejun@gmail.com>2008-03-12 02:26:34 -0400
committerJeff Garzik <jeff@garzik.org>2008-03-17 08:26:44 -0400
commit916fbfb7ae5f8c8f86399794d89e6d273df8826b (patch)
tree0b3982923e2b4114b83f67cfca9b950004caef9c /lib
parent233f112042d0b50170212dbff99c3b34b8773cd3 (diff)
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')
-rw-r--r--lib/devres.c25
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)
298EXPORT_SYMBOL(pcim_iomap_regions); 298EXPORT_SYMBOL(pcim_iomap_regions);
299 299
300/** 300/**
301 * pcim_iomap_regions_request_all - Request all BARs and iomap specified ones
302 * @pdev: PCI device to map IO resources for
303 * @mask: Mask of BARs to iomap
304 * @name: Name used when requesting regions
305 *
306 * Request all PCI BARs and iomap regions specified by @mask.
307 */
308int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask,
309 const char *name)
310{
311 int request_mask = ((1 << 6) - 1) & ~mask;
312 int rc;
313
314 rc = pci_request_selected_regions(pdev, request_mask, name);
315 if (rc)
316 return rc;
317
318 rc = pcim_iomap_regions(pdev, mask, name);
319 if (rc)
320 pci_release_selected_regions(pdev, request_mask);
321 return rc;
322}
323EXPORT_SYMBOL(pcim_iomap_regions_request_all);
324
325/**
301 * pcim_iounmap_regions - Unmap and release PCI BARs 326 * pcim_iounmap_regions - Unmap and release PCI BARs
302 * @pdev: PCI device to map IO resources for 327 * @pdev: PCI device to map IO resources for
303 * @mask: Mask of BARs to unmap and release 328 * @mask: Mask of BARs to unmap and release