sandbox: pci: Move pci_offset_to_barnum() to pci.h
This function is useful in PCI emulators. More it into the header file to
avoid duplicating it in other drivers.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/misc/swap_case.c b/drivers/misc/swap_case.c
index 18d756e..75fe641 100644
--- a/drivers/misc/swap_case.c
+++ b/drivers/misc/swap_case.c
@@ -24,9 +24,6 @@
u32 bar[6];
};
-#define offset_to_barnum(offset) \
- (((offset) - PCI_BASE_ADDRESS_0) / sizeof(u32))
-
enum {
MEM_TEXT_SIZE = 0x100,
};
@@ -144,7 +141,7 @@
int barnum;
u32 *bar, result;
- barnum = offset_to_barnum(offset);
+ barnum = pci_offset_to_barnum(offset);
bar = &plat->bar[barnum];
result = *bar;
@@ -224,7 +221,7 @@
int barnum;
u32 *bar;
- barnum = offset_to_barnum(offset);
+ barnum = pci_offset_to_barnum(offset);
bar = &plat->bar[barnum];
debug("w bar %d=%lx\n", barnum, value);
diff --git a/include/pci.h b/include/pci.h
index 999a594..2b82b2c 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -215,6 +215,10 @@
#define PCI_BASE_ADDRESS_IO_MASK (~0x03ULL)
/* bit 1 is reserved if address_space = 1 */
+/* Convert a regsister address (e.g. PCI_BASE_ADDRESS_1) to a bar # (e.g. 1) */
+#define pci_offset_to_barnum(offset) \
+ (((offset) - PCI_BASE_ADDRESS_0) / sizeof(u32))
+
/* Header type 0 (normal devices) */
#define PCI_CARDBUS_CIS 0x28
#define PCI_SUBSYSTEM_VENDOR_ID 0x2c