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gpu: nvgpu: Enable GPU MMIO path

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This is adding support for work submit through
GPU mmio for gpu-next.

Bug 3938139

Change-Id: I69c6b2865e5264e485d8ecec4239c759abdd63d5
Signed-off-by: Dinesh T <dt@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2903841
Tested-by: Martin Radev <mradev@nvidia.com>
Reviewed-by: Martin Radev <mradev@nvidia.com>
Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Dinesh T
2023-05-13 09:38:35 +00:00
committed by mobile promotions
parent 7dbd29ceb6
commit c8ceef2d08
9 changed files with 290 additions and 5 deletions
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16
drivers/gpu/nvgpu/os/linux/linux-channel.c
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@@ -494,6 +494,10 @@ void nvgpu_os_channel_free_usermode_buffers(struct nvgpu_channel *c)
struct gk20a *g = c->g;
struct device *dev = dev_from_gk20a(g);
if (nvgpu_is_enabled(g, NVGPU_SUPPORT_GPU_MMIO)) {
nvgpu_channel_free_mmio_gpu_vas(g, c);
}
if (priv->usermode.gpfifo.dmabuf != NULL) {
nvgpu_mm_unpin(dev, priv->usermode.gpfifo.dmabuf,
priv->usermode.gpfifo.attachment,
@@ -560,7 +564,19 @@ static int nvgpu_channel_alloc_usermode_buffers(struct nvgpu_channel *c,
goto unmap_free_gpfifo;
}
if (nvgpu_is_enabled(g, NVGPU_SUPPORT_GPU_MMIO) &&
((args->flags & NVGPU_SETUP_BIND_FLAGS_USERMODE_GPU_MAP_RESOURCES_SUPPORT) != 0U)) {
err = nvgpu_channel_setup_mmio_gpu_vas(g, c, gpfifo_size);
if (err < 0) {
err = -ENOMEM;
goto unmap_free_gpfifo;
}
}
args->work_submit_token = g->ops.usermode.doorbell_token(c);
args->gpfifo_gpu_va = c->gpfifo_va;
args->userd_gpu_va = c->userd_va;
args->usermode_mmio_gpu_va = c->vm->gpummio_va;
return 0;
unmap_free_gpfifo: