Thank you! That is in the Linux driver here:

As a matter of completion, is this information publicly available such
as in a chipset document or something you came across from reading the
driver code? I am currently essentially doing replay without fully
understanding how the device works.

On 10/01/2017 03:12 PM, Andriy Voskoboinyk wrote:
> Do you mean 0xFFE address? In vendor driver such 'addresses' are used
> for delay between writes (50 ms for RTL8812A).
>> The issue is in the assignment, not the write/read part. rtwn_rf_prog
>> wants a * uint8_t list, whereas the register size from Linux is a
>> uint32_t (but can cleanly fit into a uint16_t and might just be the
>> default register size on Linux). How do I reconcile those two? I hope I
>> was clearer there.
>> The first column are the Linux registers in question:
>> Thank you for your continued assistance.
>> On 10/01/2017 06:30 AM, Andriy Voskoboinyk wrote:
>>> Hi,
>>> RF registers are using indirect addressing; you should use
>>> rtwn_rf_write() / rtwn_rf_read() instead.
>>>> I am working on porting over a Linux Realtek driver to FreeBSD. I ran
>>>> into a register-size issue.
>>>> FreeBSD's PCI-write function is defined as follows:
>>>> rtwn_pci_write_4(struct rtwn_softc *sc, uint16_t addr)
>>>> Notice that the second parameter is of type uint16_t.
>>>> During initialization, the rtwn driver uses the rtwn_rf_prog structure
>>>> to write a pre-defined list of data to a pre-defined list of registers.
>>>> The structure to hold both lists is defined here:
>>>> Notice how the second parameter 'reg' is a uint8_t.
>>>> The rtwn_pci_write_4's addr is uint16_t, the rtwn_rf_prog's addr is a
>>>> uint8_t. How would I reconcile this type mismatch? Additionally, the
>>>> Linux version of this block of code has all register values as a
>>>> uint32_t. It is not a matter of a cast, because some values definitely
>>>> use more than 1 byte (ie 0xFFE).
>>>> Suggestions on how to reconcile and resolve this issue?
>>>> Thanks!
>>>> Farhan Khan
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