Register Address Space - 5.0 English - PG318

Hardware Access

You must provide the following two functions for the API to call:

• hardware_write(context, address, data)
• hardware_read(context, address) → data (return value of the hardware_read function)

Arguments:

data

32-bit value

address

Width depends on the IP and addressing mode

context

User-defined handle to select the specific IP instance and its configuration such as, base address

Mapping

• In both hardware_write and hardware_read, map the API’s logical address for the selected instance to the hardware base address of that instance.

Abstraction and Driver Behavior

• The IP register space is fully abstracted by the API and supplied driver.
• Direct register accesses are not required; your hardware_read and hardware_write functions provide the necessary access path for the driver.

Implementation Notes

Use the context to retrieve the instance's base address.