From 37a1cf9c9c4c670e074feb8fb2fc6b4a40a80b1b Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 25 Sep 2019 08:56:06 -0600 Subject: 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 Reviewed-by: Bin Meng --- include/pci.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/pci.h') diff --git a/include/pci.h b/include/pci.h index 999a594cdd..2b82b2c5a3 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 -- cgit