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[v2,6/6] gpu: host1x: debug: Dump push buffer state

Message ID 20200629031842.32463-7-digetx@gmail.com
State Accepted
Headers show
Series Tegra DRM / Host1x drivers improvements and corrections | expand

Commit Message

Dmitry Osipenko June 29, 2020, 3:18 a.m. UTC
When job hangs and there is a memory error pointing at channel's push
buffer, it is very handy to know the push buffer's state. This patch
makes the push buffer's state to be dumped into KMSG in addition to the
job's gathers.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 drivers/gpu/host1x/hw/debug_hw.c | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/drivers/gpu/host1x/hw/debug_hw.c b/drivers/gpu/host1x/hw/debug_hw.c
index 02125842071c..f31bcfa1b837 100644
--- a/drivers/gpu/host1x/hw/debug_hw.c
+++ b/drivers/gpu/host1x/hw/debug_hw.c
@@ -192,8 +192,14 @@  static void show_gather(struct output *o, phys_addr_t phys_addr,
 
 static void show_channel_gathers(struct output *o, struct host1x_cdma *cdma)
 {
+	struct push_buffer *pb = &cdma->push_buffer;
 	struct host1x_job *job;
 
+	host1x_debug_output(o, "PUSHBUF at %pad, %u words\n",
+			    &pb->dma, pb->size / 4);
+
+	show_gather(o, pb->dma, pb->size / 4, cdma, pb->dma, pb->mapped);
+
 	list_for_each_entry(job, &cdma->sync_queue, list) {
 		unsigned int i;