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gpu: nvgpu: update device management framework to remove unusable engines

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On certain platforms, not all copy engine instances are usable. The user
shouldn't submit any work to these engines. To enforce this, remove
these engines from active/host_engine list, this should ensure that these
engines do not get advertised to userspace. In order to accomplish this
introduce the following functions:
- nvgpu_engine_remove_one_dev: This function removes the specified device
  entry from following device lists: fifo->host_engines, fifo->active_engines,
  runlist->rl_dev_list, runlist->eng_bitmask.

Replace iteration over LCE device type entries using
nvgpu_device_for_each(g, dev, NVGPU_DEVTYPE_LCE), along with this introduce
macro nvgpu_device_for_each_safe.

Introduce gpu_dbg_ce flag for CE debugging.

Bug 3370462

Change-Id: I2e21f18363c6e53630d129da241c8fece106cd33
Signed-off-by: Antony Clince Alex <aalex@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2616711
Reviewed-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Antony Clince Alex
2021-10-26 10:09:20 +00:00
committed by mobile promotions
parent 79ee724b04
commit cce1d7ad84
7 changed files with 82 additions and 32 deletions
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7
drivers/gpu/nvgpu/common/device.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2020-2021, NVIDIA CORPORATION. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@@ -277,10 +277,7 @@ static u32 nvgpu_device_do_get_copies(struct gk20a *g,
}
}
for (i = 0; i < nvgpu_device_count(g, NVGPU_DEVTYPE_LCE); i++) {
dev = nvgpu_device_get(g, NVGPU_DEVTYPE_LCE, i);
nvgpu_assert(dev != NULL);
nvgpu_device_for_each(g, dev, NVGPU_DEVTYPE_LCE) {
if (async_only &&
dev->runlist_id == gr_dev->runlist_id) {
/* It's a GRCE, skip it per async_only. */