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sandbox: pci: Move pci_offset_to_barnum() to pci.h

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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>
This commit is contained in:
Simon Glass 2019-09-25 08:56:06 -06:00 • committed by Bin Meng
parent fae2c16ede
commit 37a1cf9c9c
2 changed files with 6 additions and 5 deletions
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4
include/pci.h
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@ -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