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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/host1x/debug.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/host1x/debug.c')
-rw-r--r--drivers/gpu/host1x/debug.c248
1 files changed, 248 insertions, 0 deletions
diff --git a/drivers/gpu/host1x/debug.c b/drivers/gpu/host1x/debug.c
new file mode 100644
index 000000000..34c2e36d0
--- /dev/null
+++ b/drivers/gpu/host1x/debug.c
@@ -0,0 +1,248 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2010 Google, Inc.
+ * Author: Erik Gilling <konkers@android.com>
+ *
+ * Copyright (C) 2011-2013 NVIDIA Corporation
+ */
+
+#include <linux/debugfs.h>
+#include <linux/pm_runtime.h>
+#include <linux/seq_file.h>
+#include <linux/uaccess.h>
+
+#include <linux/io.h>
+
+#include "dev.h"
+#include "debug.h"
+#include "channel.h"
+
+static DEFINE_MUTEX(debug_lock);
+
+unsigned int host1x_debug_trace_cmdbuf;
+
+static pid_t host1x_debug_force_timeout_pid;
+static u32 host1x_debug_force_timeout_val;
+static u32 host1x_debug_force_timeout_channel;
+
+void host1x_debug_output(struct output *o, const char *fmt, ...)
+{
+ va_list args;
+ int len;
+
+ va_start(args, fmt);
+ len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
+ va_end(args);
+
+ o->fn(o->ctx, o->buf, len, false);
+}
+
+void host1x_debug_cont(struct output *o, const char *fmt, ...)
+{
+ va_list args;
+ int len;
+
+ va_start(args, fmt);
+ len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
+ va_end(args);
+
+ o->fn(o->ctx, o->buf, len, true);
+}
+
+static int show_channel(struct host1x_channel *ch, void *data, bool show_fifo)
+{
+ struct host1x *m = dev_get_drvdata(ch->dev->parent);
+ struct output *o = data;
+ int err;
+
+ err = pm_runtime_resume_and_get(m->dev);
+ if (err < 0)
+ return err;
+
+ mutex_lock(&ch->cdma.lock);
+ mutex_lock(&debug_lock);
+
+ if (show_fifo)
+ host1x_hw_show_channel_fifo(m, ch, o);
+
+ host1x_hw_show_channel_cdma(m, ch, o);
+
+ mutex_unlock(&debug_lock);
+ mutex_unlock(&ch->cdma.lock);
+
+ pm_runtime_put(m->dev);
+
+ return 0;
+}
+
+static void show_syncpts(struct host1x *m, struct output *o, bool show_all)
+{
+ struct list_head *pos;
+ unsigned int i;
+ int err;
+
+ host1x_debug_output(o, "---- syncpts ----\n");
+
+ err = pm_runtime_resume_and_get(m->dev);
+ if (err < 0)
+ return;
+
+ for (i = 0; i < host1x_syncpt_nb_pts(m); i++) {
+ u32 max = host1x_syncpt_read_max(m->syncpt + i);
+ u32 min = host1x_syncpt_load(m->syncpt + i);
+ unsigned int waiters = 0;
+
+ spin_lock(&m->syncpt[i].intr.lock);
+ list_for_each(pos, &m->syncpt[i].intr.wait_head)
+ waiters++;
+ spin_unlock(&m->syncpt[i].intr.lock);
+
+ if (!kref_read(&m->syncpt[i].ref))
+ continue;
+
+ if (!show_all && !min && !max && !waiters)
+ continue;
+
+ host1x_debug_output(o,
+ "id %u (%s) min %d max %d (%d waiters)\n",
+ i, m->syncpt[i].name, min, max, waiters);
+ }
+
+ for (i = 0; i < host1x_syncpt_nb_bases(m); i++) {
+ u32 base_val;
+
+ base_val = host1x_syncpt_load_wait_base(m->syncpt + i);
+ if (base_val)
+ host1x_debug_output(o, "waitbase id %u val %d\n", i,
+ base_val);
+ }
+
+ pm_runtime_put(m->dev);
+
+ host1x_debug_output(o, "\n");
+}
+
+static void show_all(struct host1x *m, struct output *o, bool show_fifo)
+{
+ unsigned int i;
+
+ host1x_hw_show_mlocks(m, o);
+ show_syncpts(m, o, true);
+ host1x_debug_output(o, "---- channels ----\n");
+
+ for (i = 0; i < m->info->nb_channels; ++i) {
+ struct host1x_channel *ch = host1x_channel_get_index(m, i);
+
+ if (ch) {
+ show_channel(ch, o, show_fifo);
+ host1x_channel_put(ch);
+ }
+ }
+}
+
+static int host1x_debug_show_all(struct seq_file *s, void *unused)
+{
+ struct output o = {
+ .fn = write_to_seqfile,
+ .ctx = s
+ };
+
+ show_all(s->private, &o, true);
+
+ return 0;
+}
+
+static int host1x_debug_show(struct seq_file *s, void *unused)
+{
+ struct output o = {
+ .fn = write_to_seqfile,
+ .ctx = s
+ };
+
+ show_all(s->private, &o, false);
+
+ return 0;
+}
+
+static int host1x_debug_open_all(struct inode *inode, struct file *file)
+{
+ return single_open(file, host1x_debug_show_all, inode->i_private);
+}
+
+static const struct file_operations host1x_debug_all_fops = {
+ .open = host1x_debug_open_all,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int host1x_debug_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, host1x_debug_show, inode->i_private);
+}
+
+static const struct file_operations host1x_debug_fops = {
+ .open = host1x_debug_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void host1x_debugfs_init(struct host1x *host1x)
+{
+ struct dentry *de = debugfs_create_dir("tegra-host1x", NULL);
+
+ /* Store the created entry */
+ host1x->debugfs = de;
+
+ debugfs_create_file("status", S_IRUGO, de, host1x, &host1x_debug_fops);
+ debugfs_create_file("status_all", S_IRUGO, de, host1x,
+ &host1x_debug_all_fops);
+
+ debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, de,
+ &host1x_debug_trace_cmdbuf);
+
+ host1x_hw_debug_init(host1x, de);
+
+ debugfs_create_u32("force_timeout_pid", S_IRUGO|S_IWUSR, de,
+ &host1x_debug_force_timeout_pid);
+ debugfs_create_u32("force_timeout_val", S_IRUGO|S_IWUSR, de,
+ &host1x_debug_force_timeout_val);
+ debugfs_create_u32("force_timeout_channel", S_IRUGO|S_IWUSR, de,
+ &host1x_debug_force_timeout_channel);
+}
+
+static void host1x_debugfs_exit(struct host1x *host1x)
+{
+ debugfs_remove_recursive(host1x->debugfs);
+}
+
+void host1x_debug_init(struct host1x *host1x)
+{
+ if (IS_ENABLED(CONFIG_DEBUG_FS))
+ host1x_debugfs_init(host1x);
+}
+
+void host1x_debug_deinit(struct host1x *host1x)
+{
+ if (IS_ENABLED(CONFIG_DEBUG_FS))
+ host1x_debugfs_exit(host1x);
+}
+
+void host1x_debug_dump(struct host1x *host1x)
+{
+ struct output o = {
+ .fn = write_to_printk
+ };
+
+ show_all(host1x, &o, true);
+}
+
+void host1x_debug_dump_syncpts(struct host1x *host1x)
+{
+ struct output o = {
+ .fn = write_to_printk
+ };
+
+ show_syncpts(host1x, &o, false);
+}