[U-Boot] [PATCH v5 2/8] dm: pci: Add a function to write a BAR

[Simon Glass]

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>
Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
---

Changes in v5: None
Changes in v4:
- Tidy up mentions on control bits in the header file

Changes in v3: None
Changes in v2:
- Rename the last parameter to 'addr'
- Update the comment to explain usable of this function

 drivers/pci/pci-uclass.c |  8 ++++++++
 include/pci.h            | 17 +++++++++++++++--
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c
index 6dd4883..61292d7 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)
+{
+	int bar;
+
+	bar = PCI_BASE_ADDRESS_0 + barnum * 4;
+	dm_pci_write_config32(dev, bar, addr);
+}
+
 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 cb2562f..d0d152c 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -757,7 +757,9 @@ extern void pci_mpc85xx_init (struct pci_controller *hose);
 /**
  * pci_write_bar32() - Write the address of a BAR including control bits
  *
- * This writes a raw address (with control bits) to a bar
+ * This writes a raw address (with control bits) to a bar. This can be used
+ * with devices which require hard-coded addresses, not part of the normal
+ * PCI enumeration process.
  *
  * @hose:	PCI hose to use
  * @dev:	PCI device to update
@@ -765,7 +767,7 @@ extern void pci_mpc85xx_init (struct pci_controller *hose);
  * @addr:	BAR address with control bits
  */
 void pci_write_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum,
-		     u32 addr_and_ctrl);
+		     u32 addr);
 
 /**
  * pci_read_bar32() - read the address of a bar
@@ -1167,6 +1169,17 @@ 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
+ *
+ * This writes a raw address to a bar
+ *
+ * @dev:	PCI device to update
+ * @barnum:	BAR number (0-5)
+ * @addr:	BAR address
+ */
+void dm_pci_write_bar32(struct udevice *dev, int barnum, u32 addr);
+
+/**
  * dm_pci_read_bar32() - read a base address register from a device
  *
  * @dev:	Device to check
-- 
2.6.0.rc2.230.g3dd15c0