diff options
| author | Simon Glass <sjg@chromium.org> | 2019-09-25 08:56:06 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2019-10-08 13:57:40 +0800 |
| commit | 37a1cf9c9c4c670e074feb8fb2fc6b4a40a80b1b (patch) | |
| tree | 3424513b1fc8f6a8864b5ceaa5e075dde0222510 /include/pci.h | |
| parent | fae2c16ede7bf00c8f7873a96fc2b34d5345d751 (diff) | |
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>
Diffstat (limited to 'include/pci.h')
| -rw-r--r-- | include/pci.h | 4 |
1 files changed, 4 insertions, 0 deletions
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 |