commit 6236451d83a720072053855fa63d51934024a707
author Terje Bergstrom <tbergstrom@nvidia.com> Fri Mar 22 16:34:04 2013 +0200
committer Thierry Reding <thierry.reding@avionic-design.de> Mon Apr 22 12:32:46 2013 +0200
tree 8596f5ceee4e8b38804a74895d698a389e5cf6bf
parent 6579324a41cc414009a601738b70a53d6376325c

gpu: host1x: Add debug support

Add support for host1x debugging. Adds debugfs entries, and dumps
channel state to UART in case of stuck job.

Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>

drivers/gpu/host1x/dev.h

diff --git a/drivers/gpu/host1x/dev.h b/drivers/gpu/host1x/dev.h
index 1a9b438..4d16fe9 100644
--- a/drivers/gpu/host1x/dev.h
+++ b/drivers/gpu/host1x/dev.h
@@ -31,6 +31,8 @@
 struct host1x_cdma;
 struct host1x_job;
 struct push_buffer;
+struct output;
+struct dentry;
 
 struct host1x_channel_ops {
 	int (*init)(struct host1x_channel *channel, struct host1x *host,
@@ -54,6 +56,18 @@
 	void (*init)(struct push_buffer *pb);
 };
 
+struct host1x_debug_ops {
+	void (*debug_init)(struct dentry *de);
+	void (*show_channel_cdma)(struct host1x *host,
+				  struct host1x_channel *ch,
+				  struct output *o);
+	void (*show_channel_fifo)(struct host1x *host,
+				  struct host1x_channel *ch,
+				  struct output *o);
+	void (*show_mlocks)(struct host1x *host, struct output *output);
+
+};
+
 struct host1x_syncpt_ops {
 	void (*restore)(struct host1x_syncpt *syncpt);
 	void (*restore_wait_base)(struct host1x_syncpt *syncpt);
@@ -100,6 +114,7 @@
 	const struct host1x_channel_ops *channel_op;
 	const struct host1x_cdma_ops *cdma_op;
 	const struct host1x_pushbuffer_ops *cdma_pb_op;
+	const struct host1x_debug_ops *debug_op;
 
 	struct host1x_syncpt *nop_sp;
 
@@ -107,6 +122,8 @@
 	struct host1x_channel chlist;
 	unsigned long allocated_channels;
 	unsigned int num_allocated_channels;
+
+	struct dentry *debugfs;
 };
 
 void host1x_sync_writel(struct host1x *host1x, u32 r, u32 v);
@@ -257,4 +274,29 @@
 	host->cdma_pb_op->init(pb);
 }
 
+static inline void host1x_hw_debug_init(struct host1x *host, struct dentry *de)
+{
+	if (host->debug_op && host->debug_op->debug_init)
+		host->debug_op->debug_init(de);
+}
+
+static inline void host1x_hw_show_channel_cdma(struct host1x *host,
+					       struct host1x_channel *channel,
+					       struct output *o)
+{
+	host->debug_op->show_channel_cdma(host, channel, o);
+}
+
+static inline void host1x_hw_show_channel_fifo(struct host1x *host,
+					       struct host1x_channel *channel,
+					       struct output *o)
+{
+	host->debug_op->show_channel_fifo(host, channel, o);
+}
+
+static inline void host1x_hw_show_mlocks(struct host1x *host, struct output *o)
+{
+	host->debug_op->show_mlocks(host, o);
+}
+
 #endif