ocxl: Initiate a TLB invalidate command

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When a TLB Invalidate is required for the Logical Partition, the following
sequence has to be performed:

1. Load MMIO ATSD AVA register with the necessary value, if required.
2. Write the MMIO ATSD launch register to initiate the TLB Invalidate
command.
3. Poll the MMIO ATSD status register to determine when the TLB Invalidate
   has been completed.

Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201125155013.39955-3-clombard@linux.vnet.ibm.com

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Christophe Lombard 2020-11-25 16:50:10 +01:00 • committed by Michael Ellerman

parent fc1347b5fe

commit 19b311ca51

2 changed files with 120 additions and 0 deletions

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51

arch/powerpc/include/asm/pnv-ocxl.h

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69

arch/powerpc/platforms/powernv/ocxl.c

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