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@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxx>
Cc: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Cc: Jeff Garzik <jeff@xxxxxxxxxx>
---
Aieee... Sorry Andrew. I forgot doing "quilt add" on the file and
subsequently missed that pci.h was modified while gitting the repo.
Here's the corrected version.
include/linux/pci.h | 2 ++
lib/devres.c | 25 +++++++++++++++++++++++++
2 files changed, 27 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
Index: work/include/linux/pci.h
===================================================================
--- work.orig/include/linux/pci.h
+++ work/include/linux/pci.h
@@ -1044,6 +1044,8 @@ void __iomem *pcim_iomap(struct pci_dev
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);
+int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask,
+ const char *name);
void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask);
extern int pci_pci_problems;
--
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