Add snapshot points across dpu driver to trigger dumps when critical
errors are hit.
changes in v5:
- change the callers to use the snapshot function directly
Signed-off-by: Abhinav Kumar <abhinavk@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 16 +++++++++++++---
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c | 14 +++++++++-----
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 8 +++++++-
3 files changed, 29 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 8d94205..f1642de 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * Copyright (c) 2014-2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2018, 2020-2021 The Linux Foundation. All rights reserved.
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@xxxxxxxxx>
*/
@@ -26,6 +26,7 @@
#include "dpu_crtc.h"
#include "dpu_trace.h"
#include "dpu_core_irq.h"
+#include "disp/msm_disp_snapshot.h"
#define DPU_DEBUG_ENC(e, fmt, ...) DPU_DEBUG("enc%d " fmt,\
(e) ? (e)->base.base.id : -1, ##__VA_ARGS__)
@@ -1336,6 +1337,11 @@ static void dpu_encoder_underrun_callback(struct drm_encoder *drm_enc,
DPU_ATRACE_BEGIN("encoder_underrun_callback");
atomic_inc(&phy_enc->underrun_cnt);
+
+ /* trigger dump only on the first underrun */
+ if (atomic_read(&phy_enc->underrun_cnt) == 1)
+ msm_disp_snapshot_state(drm_enc->dev);
+
trace_dpu_enc_underrun_cb(DRMID(drm_enc),
atomic_read(&phy_enc->underrun_cnt));
DPU_ATRACE_END("encoder_underrun_callback");
@@ -1565,19 +1571,23 @@ static void dpu_encoder_helper_hw_reset(struct dpu_encoder_phys *phys_enc)
struct dpu_encoder_virt *dpu_enc;
struct dpu_hw_ctl *ctl;
int rc;
+ struct drm_encoder *drm_enc;
dpu_enc = to_dpu_encoder_virt(phys_enc->parent);
ctl = phys_enc->hw_ctl;
+ drm_enc = phys_enc->parent;
if (!ctl->ops.reset)
return;
- DRM_DEBUG_KMS("id:%u ctl %d reset\n", DRMID(phys_enc->parent),
+ DRM_DEBUG_KMS("id:%u ctl %d reset\n", DRMID(drm_enc),
ctl->idx);
rc = ctl->ops.reset(ctl);
- if (rc)
+ if (rc) {
DPU_ERROR_ENC(dpu_enc, "ctl %d reset failure\n", ctl->idx);
+ msm_disp_snapshot_state(drm_enc->dev);
+ }
phys_enc->enable_state = DPU_ENC_ENABLED;
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
index b2be39b..9999a73 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * Copyright (c) 2015-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2015-2018, 2020-2021 The Linux Foundation. All rights reserved.
*/
#define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__
@@ -11,6 +11,7 @@
#include "dpu_core_irq.h"
#include "dpu_formats.h"
#include "dpu_trace.h"
+#include "disp/msm_disp_snapshot.h"
#define DPU_DEBUG_CMDENC(e, fmt, ...) DPU_DEBUG("enc%d intf%d " fmt, \
(e) && (e)->base.parent ? \
@@ -191,10 +192,13 @@ static int _dpu_encoder_phys_cmd_handle_ppdone_timeout(
to_dpu_encoder_phys_cmd(phys_enc);
u32 frame_event = DPU_ENCODER_FRAME_EVENT_ERROR;
bool do_log = false;
+ struct drm_encoder *drm_enc;
if (!phys_enc->hw_pp)
return -EINVAL;
+ drm_enc = phys_enc->parent;
+
cmd_enc->pp_timeout_report_cnt++;
if (cmd_enc->pp_timeout_report_cnt == PP_TIMEOUT_MAX_TRIALS) {
frame_event |= DPU_ENCODER_FRAME_EVENT_PANEL_DEAD;
@@ -203,7 +207,7 @@ static int _dpu_encoder_phys_cmd_handle_ppdone_timeout(
do_log = true;
}
- trace_dpu_enc_phys_cmd_pdone_timeout(DRMID(phys_enc->parent),
+ trace_dpu_enc_phys_cmd_pdone_timeout(DRMID(drm_enc),
phys_enc->hw_pp->idx - PINGPONG_0,
cmd_enc->pp_timeout_report_cnt,
atomic_read(&phys_enc->pending_kickoff_cnt),
@@ -212,12 +216,12 @@ static int _dpu_encoder_phys_cmd_handle_ppdone_timeout(
/* to avoid flooding, only log first time, and "dead" time */
if (do_log) {
DRM_ERROR("id:%d pp:%d kickoff timeout %d cnt %d koff_cnt %d\n",
- DRMID(phys_enc->parent),
+ DRMID(drm_enc),
phys_enc->hw_pp->idx - PINGPONG_0,
phys_enc->hw_ctl->idx - CTL_0,
cmd_enc->pp_timeout_report_cnt,
atomic_read(&phys_enc->pending_kickoff_cnt));
-
+ msm_disp_snapshot_state(drm_enc->dev);
dpu_encoder_helper_unregister_irq(phys_enc, INTR_IDX_RDPTR);
}
@@ -228,7 +232,7 @@ static int _dpu_encoder_phys_cmd_handle_ppdone_timeout(
if (phys_enc->parent_ops->handle_frame_done)
phys_enc->parent_ops->handle_frame_done(
- phys_enc->parent, phys_enc, frame_event);
+ drm_enc, phys_enc, frame_event);
return -ETIMEDOUT;
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
index 0e06b7e..fed019f 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
@@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2015-2018, 2020-2021 The Linux Foundation. All rights reserved.
*/
#define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__
@@ -9,6 +9,7 @@
#include "dpu_core_irq.h"
#include "dpu_formats.h"
#include "dpu_trace.h"
+#include "disp/msm_disp_snapshot.h"
#define DPU_DEBUG_VIDENC(e, fmt, ...) DPU_DEBUG("enc%d intf%d " fmt, \
(e) && (e)->parent ? \
@@ -468,6 +469,7 @@ static void dpu_encoder_phys_vid_enable(struct dpu_encoder_phys *phys_enc)
"update pending flush ctl %d intf %d\n",
ctl->idx - CTL_0, phys_enc->hw_intf->idx);
+ atomic_set(&phys_enc->underrun_cnt, 0);
/* ctl_flush & timing engine enable will be triggered by framework */
if (phys_enc->enable_state == DPU_ENC_DISABLED)
@@ -537,6 +539,9 @@ static void dpu_encoder_phys_vid_prepare_for_kickoff(
{
struct dpu_hw_ctl *ctl;
int rc;
+ struct drm_encoder *drm_enc;
+
+ drm_enc = phys_enc->parent;
ctl = phys_enc->hw_ctl;
if (!ctl->ops.wait_reset_status)
@@ -550,6 +555,7 @@ static void dpu_encoder_phys_vid_prepare_for_kickoff(
if (rc) {
DPU_ERROR_VIDENC(phys_enc, "ctl %d reset failure: %d\n",
ctl->idx, rc);
+ msm_disp_snapshot_state(drm_enc->dev);
dpu_encoder_helper_unregister_irq(phys_enc, INTR_IDX_VSYNC);
}
}
--
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a Linux Foundation Collaborative Project
