pci: serial: Support reading PCI-register size with base
The PCI helpers read only the base address for a PCI region. In some cases
the size is needed as well, e.g. to pass along to a driver which needs to
know the size of its register area.
Update the functions to allow the size to be returned. For serial, record
the information and provided it with the serial_info() call.
A limitation still exists in that the size is not available when OF_LIVE
is enabled, so take account of that in the tests.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/ns16550.h b/include/ns16550.h
index e7e6866..7f48130 100644
--- a/include/ns16550.h
+++ b/include/ns16550.h
@@ -58,6 +58,7 @@
* struct ns16550_plat - information about a NS16550 port
*
* @base: Base register address
+ * @size: Size of register area in bytes
* @reg_width: IO accesses size of registers (in bytes, 1 or 4)
* @reg_shift: Shift size of registers (0=byte, 1=16bit, 2=32bit...)
* @reg_offset: Offset to start of registers (normally 0)
@@ -67,7 +68,8 @@
* @bdf: PCI slot/function (pci_dev_t)
*/
struct ns16550_plat {
- unsigned long base;
+ ulong base;
+ ulong size;
int reg_width;
int reg_shift;
int reg_offset;