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gpu: nvgpu: reject submits when usermode is on

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Kernel mode submits conflict with user submits, so don't allow them if a
channel user has asked for usermode submit support.

Bug 200145225

Change-Id: I3a99222b09260a1b3e116c6aa86d8da5d380d903
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1767907
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: Sourab Gupta <sourabg@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Konsta Holtta
2018-07-02 12:48:58 +03:00
committed by mobile promotions
parent 15d5edab4a
commit 145eb3321f
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/nvgpu/common/fifo/submit.c
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@@ -322,6 +322,9 @@ static int nvgpu_submit_channel_gpfifo(struct channel_gk20a *c,
if (!nvgpu_mem_is_valid(&c->gpfifo.mem))
return -ENOMEM;
if (c->usermode_submit_enabled)
return -EINVAL;
/* fifo not large enough for request. Return error immediately.
* Kernel can insert gpfifo entries before and after user gpfifos.
* So, add extra_entries in user request. Also, HW with fifo size N