drm/nouveau/falcon: support for EMEM

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On SEC, DMEM is unaccessible by the CPU when the falcon is running in LS
mode. This makes communication with the firmware using DMEM impossible.

For this purpose, a new kind of memory (EMEM) has been added. It works
similarly to DMEM, with the difference that its address space starts at
0x1000000. For this reason, it makes sense to treat it like a special
case of DMEM.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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Alexandre Courbot 2017-02-14 15:56:10 +09:00 • committed by Ben Skeggs

parent cfd044b028

commit 6ac2cc209e

3 changed files with 65 additions and 0 deletions

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1

drivers/gpu/drm/nouveau/include/nvkm/engine/falcon.h

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1

drivers/gpu/drm/nouveau/nvkm/falcon/base.c

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63

drivers/gpu/drm/nouveau/nvkm/falcon/v1.c

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