[PATCH v6 01/17] powerpc/vas: Define macros, register fields and structures

[Michael Ellerman]

Sukadev Bhattiprolu <sukadev at linux.vnet.ibm.com> writes:

> Define macros for the VAS hardware registers and bit-fields as well
> as couple of data structures needed by the VAS driver.
>
> Signed-off-by: Sukadev Bhattiprolu <sukadev at linux.vnet.ibm.com>
> ---
> Changelog[v6]
> 	- Add some fields for FTW windows
>
> Changelog[v4]
> 	- [Michael Neuling] Move VAS code to arch/powerpc; Reorg vas.h and
> 	  vas-internal.h to kernel and uapi versions; rather than creating
> 	  separate properties for window context/address entries in device
> 	  tree, combine them into "reg" properties; drop ->hwirq and irq_port
> 	  fields from vas_window as they are only needed with user space
> 	  windows.
> 	- Drop the error check for CONFIG_PPC_4K_PAGES. Instead in a
> 	  follow-on patch add a "depends on CONFIG_PPC_64K_PAGES".
>
> Changelog[v3]
> 	- Rename winctx->pid to winctx->pidr to reflect that its a value
> 	  from the PID register (SPRN_PID), not the linux process id.
> 	- Make it easier to split header into kernel/user parts
> 	- To keep user interface simple, use macros rather than enum for
> 	  the threshold-control modes.
> 	- Add a pid field to struct vas_window - needed for user space
> 	  send windows.
>
> Changelog[v2]
> 	- Add an overview of VAS in vas-internal.h
> 	- Get window context parameters from device tree and drop
> 	  unnecessary macros.
> ---
>  arch/powerpc/include/asm/vas.h       |  35 ++++
>  arch/powerpc/include/uapi/asm/vas.h  |  25 +++

I thought we weren't exposing VAS to userspace yet?

If we are then we need to get things straight WRT copy/paste abort.

cheers