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From: Rob Clark <robdclark@gmail.com>
To: dri-devel@lists.freedesktop.org
Subject: [PATCH 7/7] drm/msm: module param to dump state on error irq
Date: Sat,  5 Nov 2016 11:08:12 -0400	[thread overview]
Message-ID: <1478358492-30738-8-git-send-email-robdclark@gmail.com> (raw)
In-Reply-To: <1478358492-30738-1-git-send-email-robdclark@gmail.com>

Signed-off-by: Rob Clark <robdclark@gmail.com>
---
 drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c | 10 ++++++++++
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c | 11 +++++++++++
 drivers/gpu/drm/msm/msm_drv.c           |  4 ++++
 3 files changed, 25 insertions(+)

diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c
index a521207..b764d7f 100644
--- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c
+++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c
@@ -15,6 +15,7 @@
  * this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <drm/drm_print.h>
 
 #include "msm_drv.h"
 #include "mdp4_kms.h"
@@ -29,7 +30,16 @@ void mdp4_set_irqmask(struct mdp_kms *mdp_kms, uint32_t irqmask,
 
 static void mdp4_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus)
 {
+	struct mdp4_kms *mdp4_kms = container_of(irq, struct mdp4_kms, error_handler);
+	static DEFINE_RATELIMIT_STATE(rs, 5*HZ, 1);
+	extern bool dumpstate;
+
 	DRM_ERROR_RATELIMITED("errors: %08x\n", irqstatus);
+
+	if (dumpstate && __ratelimit(&rs)) {
+		struct drm_printer p = drm_info_printer(mdp4_kms->dev->dev);
+		drm_state_dump(mdp4_kms->dev, &p);
+	}
 }
 
 void mdp4_irq_preinstall(struct msm_kms *kms)
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c
index d53e551..5c5940d 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c
@@ -17,6 +17,8 @@
 
 #include <linux/irq.h>
 
+#include <drm/drm_print.h>
+
 #include "msm_drv.h"
 #include "mdp5_kms.h"
 
@@ -30,7 +32,16 @@ void mdp5_set_irqmask(struct mdp_kms *mdp_kms, uint32_t irqmask,
 
 static void mdp5_irq_error_handler(struct mdp_irq *irq, uint32_t irqstatus)
 {
+	struct mdp5_kms *mdp5_kms = container_of(irq, struct mdp5_kms, error_handler);
+	static DEFINE_RATELIMIT_STATE(rs, 5*HZ, 1);
+	extern bool dumpstate;
+
 	DRM_ERROR_RATELIMITED("errors: %08x\n", irqstatus);
+
+	if (dumpstate && __ratelimit(&rs)) {
+		struct drm_printer p = drm_info_printer(mdp5_kms->dev->dev);
+		drm_state_dump(mdp5_kms->dev, &p);
+	}
 }
 
 void mdp5_irq_preinstall(struct msm_kms *kms)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index fb5c0b0..77d8ee5 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -77,6 +77,10 @@ static char *vram = "16m";
 MODULE_PARM_DESC(vram, "Configure VRAM size (for devices without IOMMU/GPUMMU)");
 module_param(vram, charp, 0);
 
+bool dumpstate = false;
+MODULE_PARM_DESC(dumpstate, "Dump KMS state on errors");
+module_param(dumpstate, bool, 0600);
+
 /*
  * Util/helpers:
  */
-- 
2.7.4

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  parent reply	other threads:[~2016-11-05 15:08 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-05 15:08 [PATCH 0/7] drm: add atomic state logging and debugfs Rob Clark
2016-11-05 15:08 ` [PATCH 1/7] drm: helper macros to print composite types Rob Clark
2016-11-05 15:08 ` [PATCH 2/7] drm: add helper for printing to log or seq_file Rob Clark
2016-11-05 15:08 ` [PATCH 3/7] drm: add helpers to go from plane state to drm_rect Rob Clark
2016-11-05 15:08 ` [PATCH 4/7] drm/atomic: add new drm_debug bit to dump atomic state Rob Clark
2016-11-05 15:08 ` [PATCH 5/7] drm/atomic: add debugfs file to dump out " Rob Clark
2016-11-05 15:08 ` [PATCH 6/7] drm/msm/mdp5: add atomic_print_state support Rob Clark
2016-11-05 15:08 ` Rob Clark [this message]
2016-11-08 21:39 ` [PATCH 0/7] drm: add atomic state logging and debugfs Sean Paul

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