Hello everyone,
GM20B is the GPU of the upcoming Tegra X1 SoC. This series adds initial support for it, based on a rework of the already-supported GK20A. It also introduces support for NVIDIA-provided firmware files, which is why I have added a few NVIDIA people who are relevant to this discussion.
The first patch adds support for loading the FECS and GPCCS firmwares from firmware files officially released by NVIDIA. As you know such firmwares will soon become a necessity for newer GPUs because some falcons will require signed firmware to operate. In addition there is no reverse-engineered version of the GK20A firmwares yet, so since an external file is needed anyway, it may as well be provided officially. NVIDIA plans to release firmwares as one file per binary to keep things simple. The layout will be nvidia/<gpu>/<firmware>.bin, so for GK20A FECS/GPCCS we have:
nvidia/gk20a/fecs_inst.bin (aka fuc409c) nvidia/gk20a/fecs_data.bin (aka fuc409d) nvidia/gk20a/gpccs_inst.bin (aka fuc41ac) nvidia/gk20a/gpccs_data.bin (aka fuc41ad)
All firmware files listed in this patchset are clean for release, and I am just waiting for a community ack of the layout to send a patch to linux-firmware.
The second patch reworks existing GK20A support to make it closer to what our nvgpu driver does. Support so far was heavily based on GK104, which somehow made me feel uneasy - and quite scared after I looked more closely at what nvgpu does. In particular the GK104 MMIO bundles differed significantly from what nvgpu does. This change aligns things and (probably less significant, but still safer) reorders the initialization sequence to match the one of nvgpu.
You will note that the MMIO bundles now come as firmware files of their own. I am not sure the community will be pleased with an increase of firmware files, however the rationale for this is as follows: - These initialization sequences are related to the firmwares, so it makes sense to distribute them under the same medium - If NVIDIA needs to update the firmwares for some reason, it can atomically update the MMIO bundles and provide a coherent set, instead of having to introduce versioning into the firmware and driver - For IP reasons, I as an NVIDIA employee cannot extract these register sequences and link them into Nouveau - These are just a bunch of register address/value pairs anyway
The new firmware files introduced are:
nvidia/gk20a/sw_nonctx.bin (gr_pack_mmio) nvidia/gk20a/sw_ctx.bin (grctx_pack_hub, grctx_pack_gpc, grctx_pack_zcull, grctx_pack_tpc, grctx_pack_ppc) nvidia/gk20a/sw_bundle_init.bin (grctx_pack_icmd) nvidia/gk20a/sw_method_init.bin (grctx_pack_mthd)
Third patch is trivial and adds the GM20B FIFO device.
Fourth patch adds GM20B GR based on the reworked GK20A support. GM20B will rely on the same firmware files as GK20A (also clean for release). Note that this is not full support yet for released devices, which will require secure boot. This will be my focus once this patchset is merged (Deepak got a working version, but there is still a lot of work to do on it before it is upstreamable).
The last two patches recognize GM20B at the device and platform level. Nothing really exciting.
I hope the addition of firmware files will not become too controversial. If it does, I have good arguments to support it. ;) Besides the GK20A rework that probably few people care about, the point is the addition of a basic layout for the firmwares that NVIDIA will officially release to finally support secure boot, and I would like to make sure we get this right.
Thanks, Alex.
Alexandre Courbot (6): gr: support for NVIDIA-provided firmwares gr/gk20a: use same initialization sequence as nvgpu fifo: add GM20B fifo gr: add GM20B support device: recognize GM20B platform: recognize GM20B
drm/nouveau/include/nvkm/engine/fifo.h | 1 + drm/nouveau/include/nvkm/engine/gr.h | 1 + drm/nouveau/nouveau_platform.c | 1 + drm/nouveau/nvkm/engine/device/gm100.c | 20 ++ drm/nouveau/nvkm/engine/fifo/Kbuild | 1 + drm/nouveau/nvkm/engine/fifo/gk104.h | 4 + drm/nouveau/nvkm/engine/fifo/gm204.c | 2 +- drm/nouveau/nvkm/engine/fifo/gm20b.c | 34 ++++ drm/nouveau/nvkm/engine/gr/Kbuild | 2 + drm/nouveau/nvkm/engine/gr/ctxgf100.h | 7 + drm/nouveau/nvkm/engine/gr/ctxgk20a.c | 65 +++++-- drm/nouveau/nvkm/engine/gr/ctxgm107.c | 2 +- drm/nouveau/nvkm/engine/gr/ctxgm204.c | 4 +- drm/nouveau/nvkm/engine/gr/ctxgm20b.c | 110 +++++++++++ drm/nouveau/nvkm/engine/gr/gf100.c | 70 +++++-- drm/nouveau/nvkm/engine/gr/gf100.h | 18 ++ drm/nouveau/nvkm/engine/gr/gk20a.c | 336 +++++++++++++++++++++++++++++++-- drm/nouveau/nvkm/engine/gr/gk20a.h | 35 ++++ drm/nouveau/nvkm/engine/gr/gm20b.c | 84 +++++++++ 19 files changed, 748 insertions(+), 49 deletions(-) create mode 100644 drm/nouveau/nvkm/engine/fifo/gm20b.c create mode 100644 drm/nouveau/nvkm/engine/gr/ctxgm20b.c create mode 100644 drm/nouveau/nvkm/engine/gr/gk20a.h create mode 100644 drm/nouveau/nvkm/engine/gr/gm20b.c