[U-Boot] [PATCH 2/7] dm: pci: Add a function to write a BAR

Simon Glass sjg at chromium.org
Tue Dec 1 05:11:21 CET 2015


Add a driver-model version of the pci_write_bar32 function so that this is
supported in the new API.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 drivers/pci/pci-uclass.c |  8 ++++++++
 include/pci.h            | 11 +++++++++++
 2 files changed, 19 insertions(+)

diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index 77d5300..93dcb21 100644
--- a/drivers/pci/pci-uclass.c
+++ b/drivers/pci/pci-uclass.c
@@ -1053,6 +1053,14 @@ u32 dm_pci_read_bar32(struct udevice *dev, int barnum)
 		return addr & PCI_BASE_ADDRESS_MEM_MASK;
 }
 
+void dm_pci_write_bar32(struct udevice *dev, int barnum, u32 addr_and_ctrl)
+{
+	int bar;
+
+	bar = PCI_BASE_ADDRESS_0 + barnum * 4;
+	dm_pci_write_config32(dev, bar, addr_and_ctrl);
+}
+
 static int _dm_pci_bus_to_phys(struct udevice *ctlr,
 				    pci_addr_t bus_addr, unsigned long flags,
 				    unsigned long skip_mask, phys_addr_t *pa)
diff --git a/include/pci.h b/include/pci.h
index 9e811ca..f04ac99 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -1167,6 +1167,17 @@ int pci_get_regions(struct udevice *dev, struct pci_region **iop,
 		    struct pci_region **memp, struct pci_region **prefp);
 
 /**
+ * dm_pci_write_bar32() - Write the address of a BAR including control bits
+ *
+ * This writes a raw address (with control bits) to a bar
+ *
+ * @dev:	PCI device to update
+ * @barnum:	BAR number (0-5)
+ * @addr:	BAR address with control bits
+ */
+void dm_pci_write_bar32(struct udevice *dev, int barnum, u32 addr_and_ctrl);
+
+/**
  * dm_pci_read_bar32() - read a base address register from a device
  *
  * @dev:	Device to check
-- 
2.6.0.rc2.230.g3dd15c0



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