Provide a function to do most of the common PCI init work.
Suggested-by: Andrew Jones <drjones@xxxxxxxxxx>
Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
---
lib/pci.c | 8 ++++++++
lib/pci.h | 1 +
2 files changed, 9 insertions(+)
diff --git a/lib/pci.c b/lib/pci.c
index fd17ea5..971f02e 100644
--- a/lib/pci.c
+++ b/lib/pci.c
@@ -249,3 +249,11 @@ void pci_scan_bars(struct pci_dev *dev)
dev->bar[i] = pci_bar_get_addr(dev, i);
}
}
+
+int pci_enable_defaults(struct pci_dev *dev)
+{
+ pci_scan_bars(dev);
+ /* Enable device DMA operations */
+ pci_cmd_set_clr(dev, PCI_COMMAND_MASTER, 0);
+ return 0;
+}
diff --git a/lib/pci.h b/lib/pci.h
index de15086..63f8a0a 100644
--- a/lib/pci.h
+++ b/lib/pci.h
@@ -26,6 +26,7 @@ struct pci_dev {
void pci_dev_init(struct pci_dev *dev, pcidevaddr_t bdf);
void pci_scan_bars(struct pci_dev *dev);
void pci_cmd_set_clr(struct pci_dev *dev, uint16_t set, uint16_t clr);
+int pci_enable_defaults(struct pci_dev *dev);
extern bool pci_probe(void);
extern void pci_print(void);
--
2.7.4
--
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