| * IBM Powerpc Virtual Accelerator Switchboard (VAS) |
| |
| VAS is a hardware mechanism that allows kernel subsystems and user processes |
| to directly submit compression and other requests to Nest accelerators (NX) |
| or other coprocessors functions. |
| |
| Required properties: |
| - compatible : should be "ibm,vas". |
| - ibm,vas-id : A unique identifier for each instance of VAS in the system |
| - reg : Should contain 4 pairs of 64-bit fields specifying the Hypervisor |
| window context start and length, OS/User window context start and length, |
| "Paste address" start and length, "Paste window id" start bit and number |
| of bits) |
| |
| Example: |
| |
| vas@6019100000000 { |
| compatible = "ibm,vas", "ibm,power9-vas"; |
| reg = <0x6019100000000 0x2000000 0x6019000000000 0x100000000 0x8000000000000 0x100000000 0x20 0x10>; |
| name = "vas"; |
| ibm,vas-id = <0x1>; |
| }; |
