Add helpers to request and release a device's memory or I/O regions.
With these helpers in place, one does not need to select a device's memory or
I/O regions with pci_select_bars() prior to requesting or releasing them.
Suggested-by: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Signed-off-by: Johannes Thumshirn <jthumshirn@xxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
---
include/linux/pci.h | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 932ec74..9ee6569 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1401,6 +1401,34 @@ typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode,
unsigned int command_bits, u32 flags);
void pci_register_set_vga_state(arch_set_vga_state_t func);
+static inline int
+pci_request_io_regions(struct pci_dev *pdev, const char *name)
+{
+ return pci_request_selected_regions(pdev,
+ pci_select_bars(pdev, IORESOURCE_IO), name);
+}
+
+static inline void
+pci_release_io_regions(struct pci_dev *pdev)
+{
+ return pci_release_selected_regions(pdev,
+ pci_select_bars(pdev, IORESOURCE_IO));
+}
+
+static inline int
+pci_request_mem_regions(struct pci_dev *pdev, const char *name)
+{
+ return pci_request_selected_regions(pdev,
+ pci_select_bars(pdev, IORESOURCE_MEM), name);
+}
+
+static inline void
+pci_release_mem_regions(struct pci_dev *pdev)
+{
+ return pci_release_selected_regions(pdev,
+ pci_select_bars(pdev, IORESOURCE_MEM));
+}
+
#else /* CONFIG_PCI is not enabled */
static inline void pci_set_flags(int flags) { }
--
1.8.5.6
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