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gpu: nvgpu: refactor interrupt handling

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JIRA: EVLR-1004

(*) Refactor the non-stalling interrupt path to execute clear on the
top half, so on dGPU case processing of stalling interrupts does not
block non-stalling one.
(*) Use a worker thread to do semaphore wakeups and allow batching of
the non-stalling operations.
(*) Fix a bug where some gpus will not properly track the completion
of interrupts, preventing safe driver unloads

Change-Id: Icc90a3acba544c97ec6a9285ab235d337ab9eefa
Signed-off-by: David Nieto <dmartineznie@nvidia.com>
Reviewed-on: http://git-master/r/1312796
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Lakshmanan M <lm@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Navneet Kumar <navneetk@nvidia.com>
This commit is contained in:
David Nieto
2017-02-06 15:44:55 -08:00
committed by mobile promotions
parent 4deb494ad1
commit 403874fa75
13 changed files with 139 additions and 126 deletions
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2
drivers/gpu/nvgpu/gk20a/fifo_gk20a.h
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@@ -214,7 +214,7 @@ int gk20a_init_fifo_support(struct gk20a *g);
int gk20a_init_fifo_setup_hw(struct gk20a *g);
void gk20a_fifo_isr(struct gk20a *g);
void gk20a_fifo_nonstall_isr(struct gk20a *g);
int gk20a_fifo_nonstall_isr(struct gk20a *g);
int gk20a_fifo_preempt_channel(struct gk20a *g, u32 hw_chid);
int gk20a_fifo_preempt_tsg(struct gk20a *g, u32 tsgid);