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| author | Alexey Kardashevskiy | 2016-04-29 10:55:22 +0200 |
|---|---|---|
| committer | Michael Ellerman | 2016-05-11 13:54:30 +0200 |
| commit | b575c731fe58c1ecb1247c6a334ba6c7b4c0b480 (patch) | |
| tree | fac95487154fecab05a0ea80f7e67030c6079298 /arch/powerpc/platforms/powernv/pci.h | |
| parent | powerpc/powernv/ioda2: Export debug helper pe_level_printk() (diff) | |
| download | kernel-qcow2-linux-b575c731fe58c1ecb1247c6a334ba6c7b4c0b480.tar.gz kernel-qcow2-linux-b575c731fe58c1ecb1247c6a334ba6c7b4c0b480.tar.xz kernel-qcow2-linux-b575c731fe58c1ecb1247c6a334ba6c7b4c0b480.zip | |
powerpc/powernv/npu: Add set/unset window helpers
The upcoming NVLink passthrough support will require NPU code to cope
with two DMA windows.
This adds a pnv_npu_set_window() helper which programs 32bit window to
the hardware. This also adds multilevel TCE support.
This adds a pnv_npu_unset_window() helper which removes the DMA window
from the hardware. This does not make difference now as the caller -
pnv_npu_dma_set_bypass() - enables bypass in the hardware but the next
patch will use it to manage TCE table lists for TCE Kill handling.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-By: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms/powernv/pci.h')
0 files changed, 0 insertions, 0 deletions