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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219// 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){ unsigned long irqflags; 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_irqsave(&m->syncpt[i].fences.lock, irqflags); list_for_each(pos, &m->syncpt[i].fences.list) waiters++; spin_unlock_irqrestore(&m->syncpt[i].fences.lock, irqflags);
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_all_show(struct seq_file *s, void *unused){ struct output o = { .fn = write_to_seqfile, .ctx = s };
show_all(s->private, &o, true);
return 0;}DEFINE_SHOW_ATTRIBUTE(host1x_debug_all);
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;}DEFINE_SHOW_ATTRIBUTE(host1x_debug);
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);}