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authorSimon Glass <sjg@chromium.org>2014-11-14 18:18:30 -0700
committerSimon Glass <sjg@chromium.org>2014-11-25 06:34:00 -0700
commite8a552eb625f0b2d7a778d151af25a17c6d33b7b (patch)
tree07c3af027137623dbb431e2b913d64e11cfc2fdd /include/pci.h
parentb6b4a0ec5550cf5e45e9b0b3527db63464e4c3d8 (diff)
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pci: Add functions to read and write a BAR address
Some PCI functions cannot be auto-configured. Add a function to set up a fixed BAR which can be used in these situations. Also add a function to read the current address of a BAR. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'include/pci.h')
-rw-r--r--include/pci.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/include/pci.h b/include/pci.h
index d211351..216f448 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -678,5 +678,28 @@ extern void pci_mpc824x_init (struct pci_controller *hose);
extern void pci_mpc85xx_init (struct pci_controller *hose);
#endif
+/**
+ * pci_write_bar32() - Write the address of a BAR including control bits
+ *
+ * This writes a raw address (with control bits) to a bar
+ *
+ * @hose: PCI hose to use
+ * @dev: PCI device to update
+ * @barnum: BAR number (0-5)
+ * @addr: BAR address with control bits
+ */
+void pci_write_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum,
+ u32 addr_and_ctrl);
+
+/**
+ * pci_read_bar32() - read the address of a bar
+ *
+ * @hose: PCI hose to use
+ * @dev: PCI device to inspect
+ * @barnum: BAR number (0-5)
+ * @return address of the bar, masking out any control bits
+ * */
+u32 pci_read_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum);
+
#endif /* __ASSEMBLY__ */
#endif /* _PCI_H */