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gpu: nvgpu: re-add API to disable all engine activity

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Patch e1e059454a
removed the API gk20a_fifo_disable_all_engine_activity()
which disables activity on all engines

Re-add it since it is now needed in the shutdown path
to ensure engines are idle

Bug 200281010

Change-Id: Idf5860f7f5009f3fb875ce94b7d66007c866ac49
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1457755
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Deepak Nibade
2017-04-07 12:13:11 +05:30
committed by mobile promotions
parent 8f2f31354e
commit a100422df5
1 changed files with 35 additions and 0 deletions
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35
drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
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@@ -2808,6 +2808,41 @@ clean_up:
return err;
}
int gk20a_fifo_disable_all_engine_activity(struct gk20a *g,
bool wait_for_idle)
{
unsigned int i;
int err = 0, ret = 0;
u32 active_engine_id;
for (i = 0; i < g->fifo.num_engines; i++) {
active_engine_id = g->fifo.active_engines_list[i];
err = gk20a_fifo_disable_engine_activity(g,
&g->fifo.engine_info[active_engine_id],
wait_for_idle);
if (err) {
nvgpu_err(g, "failed to disable engine %d activity\n",
active_engine_id);
ret = err;
break;
}
}
if (err) {
while (i-- != 0) {
active_engine_id = g->fifo.active_engines_list[i];
err = gk20a_fifo_enable_engine_activity(g,
&g->fifo.engine_info[active_engine_id]);
if (err)
nvgpu_err(g,
"failed to re-enable engine %d activity\n",
active_engine_id);
}
}
return ret;
}
static void gk20a_fifo_runlist_reset_engines(struct gk20a *g, u32 runlist_id)
{
struct fifo_gk20a *f = &g->fifo;