1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
From 7bf9158b5981fbca65e8819df93fb2fc721c95bd Mon Sep 17 00:00:00 2001
From: Le Ma <le.ma@amd.com>
Date: Fri, 11 Oct 2019 18:21:16 +0800
Subject: [PATCH 4122/4736] drm/amdgpu/soc15: disable doorbell interrupt as
part of BACO entry sequence
Workaround to make RAS recovery work in BACO reset.
Change-Id: I4e4a81f719dcc88dfd49f583c4be3a373b5eab2c
Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h | 2 ++
drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c | 8 ++++++++
drivers/gpu/drm/amd/amdgpu/soc15.c | 9 +++++++++
3 files changed, 19 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h
index 1f26a17e6561..919bd566ba3c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h
@@ -67,6 +67,8 @@ struct amdgpu_nbio_funcs {
bool enable);
void (*ih_doorbell_range)(struct amdgpu_device *adev,
bool use_doorbell, int doorbell_index);
+ void (*enable_doorbell_interrupt)(struct amdgpu_device *adev,
+ bool enable);
void (*update_medium_grain_clock_gating)(struct amdgpu_device *adev,
bool enable);
void (*update_medium_grain_light_sleep)(struct amdgpu_device *adev,
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
index 238c2483496a..0db458f9fafc 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
@@ -502,6 +502,13 @@ static void nbio_v7_4_query_ras_error_count(struct amdgpu_device *adev,
}
}
+static void nbio_v7_4_enable_doorbell_interrupt(struct amdgpu_device *adev,
+ bool enable)
+{
+ WREG32_FIELD15(NBIO, 0, BIF_DOORBELL_INT_CNTL,
+ DOORBELL_INTERRUPT_DISABLE, enable ? 0 : 1);
+}
+
const struct amdgpu_nbio_funcs nbio_v7_4_funcs = {
.get_hdp_flush_req_offset = nbio_v7_4_get_hdp_flush_req_offset,
.get_hdp_flush_done_offset = nbio_v7_4_get_hdp_flush_done_offset,
@@ -516,6 +523,7 @@ const struct amdgpu_nbio_funcs nbio_v7_4_funcs = {
.enable_doorbell_aperture = nbio_v7_4_enable_doorbell_aperture,
.enable_doorbell_selfring_aperture = nbio_v7_4_enable_doorbell_selfring_aperture,
.ih_doorbell_range = nbio_v7_4_ih_doorbell_range,
+ .enable_doorbell_interrupt = nbio_v7_4_enable_doorbell_interrupt,
.update_medium_grain_clock_gating = nbio_v7_4_update_medium_grain_clock_gating,
.update_medium_grain_light_sleep = nbio_v7_4_update_medium_grain_light_sleep,
.get_clockgating_state = nbio_v7_4_get_clockgating_state,
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index a77f9b708f7f..82b5bc4ddf9b 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -492,10 +492,15 @@ static int soc15_asic_baco_reset(struct amdgpu_device *adev)
{
void *pp_handle = adev->powerplay.pp_handle;
const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+ struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
if (!pp_funcs ||!pp_funcs->get_asic_baco_state ||!pp_funcs->set_asic_baco_state)
return -ENOENT;
+ /* avoid NBIF got stuck when do RAS recovery in BACO reset */
+ if (ras && ras->supported)
+ adev->nbio.funcs->enable_doorbell_interrupt(adev, false);
+
/* enter BACO state */
if (pp_funcs->set_asic_baco_state(pp_handle, 1))
return -EIO;
@@ -504,6 +509,10 @@ static int soc15_asic_baco_reset(struct amdgpu_device *adev)
if (pp_funcs->set_asic_baco_state(pp_handle, 0))
return -EIO;
+ /* re-enable doorbell interrupt after BACO exit */
+ if (ras && ras->supported)
+ adev->nbio.funcs->enable_doorbell_interrupt(adev, true);
+
dev_info(adev->dev, "GPU BACO reset\n");
adev->in_baco_reset = 1;
--
2.17.1
|
