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gpu: nvgpu: skip subctx pdb init during as-channel bind

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While creating a new channel, ioctls are called in the below sequence:
  1. GPU_IOCTL_OPEN_CHANNEL
  2. AS_IOCTL_BIND_CHANNEL
  3. TSG_IOCTL_BIND_CHANNEL_EX
  4. CHANNEL_ALLOC_GPFIFO_EX
  5. CHANNEL_ALLOC_OBJ_CTX.

subctx pdbs and valid mask are programmed in the channel instance block
in the channel ioctls AS_IOCTL_BIND_CHANNEL & CHANNEL_ALLOC_GPFIFO_EX.

Programming them in the ioctl AS_IOCTL_BIND_CHANNEL is redundant.
Remove related hal g->ops.mm.init_inst_block_for_subctxs.

The hal init_inst_block will program context pdb and big page size.
The hal init_inst_block_core will program context pdb, big page size
and subctx 0 pdb. This is used by h/w units (fecs, pmu, hwpm, bar1,
bar2, sec2, gsp, perfbuf etc.).

For user channels, subctx pdbs are programmed as part of ramfc setup.

Bug 3677982

Change-Id: I6656b002d513404c1fd7c3d349933e80cca7e604
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2680907
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Sagar Kamble
2022-03-13 15:53:42 +05:30
committed by mobile promotions
parent bfa20f62c6
commit 5b55088970
16 changed files with 38 additions and 64 deletions
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4
userspace/units/mm/page_table_faults/page_table_faults.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2018-2021, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2018-2022, 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"),
@@ -345,7 +345,7 @@ int test_page_faults_inst_block(struct unit_module *m, struct gk20a *g,
unit_return_fail(m, "nvgpu_alloc_inst_block failed\n");
}
g->ops.mm.init_inst_block(&inst_blk_desc, g->mm.bar2.vm, big_page_size);
g->ops.mm.init_inst_block_core(&inst_blk_desc, g->mm.bar2.vm, big_page_size);
return UNIT_SUCCESS;
}