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gpu: nvgpu: reset perfmon correctly

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Use mc reset HAL function to reset perfmon unit.
This will take care of delays after writing to
mc_enable register.

Change-Id: I6118bdd2a9fc9192f7ffc44617a170b7982c26ba
Signed-off-by: seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1581753
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
seshendra Gadagottu
2017-10-18 22:14:40 -07:00
committed by mobile promotions
parent 58be11bbf5
commit a2c9c6ba05
1 changed files with 1 additions and 4 deletions
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5
drivers/gpu/nvgpu/gk20a/css_gr_gk20a.c
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@@ -90,12 +90,9 @@ inline void css_hw_set_handled_snapshots(struct gk20a *g, u32 done)
static void css_hw_reset_streaming(struct gk20a *g)
{
u32 engine_status;
u32 old_pmc = gk20a_readl(g, mc_enable_r());
/* reset the perfmon */
gk20a_writel(g, mc_enable_r(),
old_pmc & ~mc_enable_perfmon_enabled_f());
gk20a_writel(g, mc_enable_r(), old_pmc);
g->ops.mc.reset(g, mc_enable_perfmon_enabled_f());
/* RBUFEMPTY must be set -- otherwise we'll pick up */
/* snapshot that have been queued up from earlier */