Showing changes from revision #1 to #2:
Added | Removed | Changed
Entry | |
---|---|
R0 | PCI address |
R2 | Access size (1, 2 or 4 for byte/half word/word) |
Exit | |
---|---|
R0 | Preserved ? |
R1 | Value read |
R2 | Preserved ? |
The purpose of this call is to perform an IO read cycle of the denoted size.
The PCI address used by R0 on entry can be found by calling PCI_HardwareAddress.
An IO write operation is performed by calling PCI_IOWrite.