diff options
Diffstat (limited to 'drivers/gpu/nvgpu/common/linux/intr.c')
-rw-r--r-- | drivers/gpu/nvgpu/common/linux/intr.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/gpu/nvgpu/common/linux/intr.c b/drivers/gpu/nvgpu/common/linux/intr.c new file mode 100644 index 00000000..77e44dd9 --- /dev/null +++ b/drivers/gpu/nvgpu/common/linux/intr.c | |||
@@ -0,0 +1,58 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2014-2017, NVIDIA CORPORATION. All rights reserved. | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or modify it | ||
5 | * under the terms and conditions of the GNU General Public License, | ||
6 | * version 2, as published by the Free Software Foundation. | ||
7 | * | ||
8 | * This program is distributed in the hope it will be useful, but WITHOUT | ||
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | ||
11 | * more details. | ||
12 | */ | ||
13 | |||
14 | #include <trace/events/gk20a.h> | ||
15 | |||
16 | #include "gk20a/gk20a.h" | ||
17 | |||
18 | #include <nvgpu/atomic.h> | ||
19 | |||
20 | irqreturn_t nvgpu_intr_stall(struct gk20a *g) | ||
21 | { | ||
22 | u32 mc_intr_0; | ||
23 | |||
24 | trace_mc_gk20a_intr_stall(g->name); | ||
25 | |||
26 | if (!g->power_on) | ||
27 | return IRQ_NONE; | ||
28 | |||
29 | /* not from gpu when sharing irq with others */ | ||
30 | mc_intr_0 = g->ops.mc.intr_stall(g); | ||
31 | if (unlikely(!mc_intr_0)) | ||
32 | return IRQ_NONE; | ||
33 | |||
34 | g->ops.mc.intr_stall_pause(g); | ||
35 | |||
36 | atomic_inc(&g->hw_irq_stall_count); | ||
37 | |||
38 | trace_mc_gk20a_intr_stall_done(g->name); | ||
39 | |||
40 | return IRQ_WAKE_THREAD; | ||
41 | } | ||
42 | |||
43 | irqreturn_t nvgpu_intr_thread_stall(struct gk20a *g) | ||
44 | { | ||
45 | gk20a_dbg(gpu_dbg_intr, "interrupt thread launched"); | ||
46 | |||
47 | trace_mc_gk20a_intr_thread_stall(g->name); | ||
48 | |||
49 | g->ops.mc.isr_stall(g); | ||
50 | g->ops.mc.intr_stall_resume(g); | ||
51 | |||
52 | wake_up_all(&g->sw_irq_stall_last_handled_wq); | ||
53 | |||
54 | trace_mc_gk20a_intr_thread_stall_done(g->name); | ||
55 | |||
56 | return IRQ_HANDLED; | ||
57 | } | ||
58 | |||