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 ---
drivers/misc/swap_case.c | 7 ++----- include/pci.h | 4 ++++ 2 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/misc/swap_case.c b/drivers/misc/swap_case.c index 18d756e9cd5..75fe6416707 100644 --- a/drivers/misc/swap_case.c +++ b/drivers/misc/swap_case.c @@ -24,9 +24,6 @@ struct swap_case_platdata { u32 bar[6]; };
-#define offset_to_barnum(offset) \ - (((offset) - PCI_BASE_ADDRESS_0) / sizeof(u32)) - enum { MEM_TEXT_SIZE = 0x100, }; @@ -144,7 +141,7 @@ static int sandbox_swap_case_read_config(struct udevice *emul, uint offset, 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 @@ static int sandbox_swap_case_write_config(struct udevice *emul, uint offset, 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 999a594cddf..2b82b2c5a3e 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