powerpc/vas, nx-842: Define and use chip_to_vas_id()

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Define a helper, chip_to_vas_id() to map a given chip id to corresponding
vas id.

Normally, callers of vas_rx_win_open() and vas_tx_win_open() want the VAS
window to be on the same chip where the calling thread is executing. These
callers can pass in -1 for the VAS id.

This interface will be useful if a thread running on one chip wants to open
a window on another chip (like the NX-842 driver does during start up).

Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Sukadev Bhattiprolu 2017-11-07 18:23:50 -08:00 • committed by Michael Ellerman

parent ca03258b6b

commit d4ef61b5e8

3 changed files with 23 additions and 15 deletions

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9

arch/powerpc/include/asm/vas.h

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11

arch/powerpc/platforms/powernv/vas.c

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18

drivers/crypto/nx/nx-842-powernv.c

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