/* * Copyright (C) 2010 Google, Inc. * Author: Erik Gilling <konkers@android.com> * * Copyright (C) 2011-2013 NVIDIA Corporation * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #include <linux/debugfs.h> #include <linux/seq_file.h> #include <linux/uaccess.h> #include <linux/io.h> #include "dev.h" #include "debug.h" #include "channel.h" 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); } static int show_channels(struct host1x_channel *ch, void *data, bool show_fifo) { struct host1x *m = dev_get_drvdata(ch->dev->parent); struct output *o = data; mutex_lock(&ch->reflock); if (ch->refcount) { mutex_lock(&ch->cdma.lock); if (show_fifo) host1x_hw_show_channel_fifo(m, ch, o); host1x_hw_show_channel_cdma(m, ch, o); mutex_unlock(&ch->cdma.lock); } mutex_unlock(&ch->reflock); return 0; } static void show_syncpts(struct host1x *m, struct output *o) { int i; host1x_debug_output(o, "---- syncpts ----\n"); 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); if (!min && !max) continue; host1x_debug_output(o, "id %d (%s) min %d max %d\n", i, m->syncpt[i].name, min, max); } 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 %d val %d\n", i, base_val); } host1x_debug_output(o, "\n"); } static void show_all(struct host1x *m, struct output *o) { struct host1x_channel *ch; host1x_hw_show_mlocks(m, o); show_syncpts(m, o); host1x_debug_output(o, "---- channels ----\n"); host1x_for_each_channel(m, ch) show_channels(ch, o, true); } static void show_all_no_fifo(struct host1x *host1x, struct output *o) { struct host1x_channel *ch; host1x_hw_show_mlocks(host1x, o); show_syncpts(host1x, o); host1x_debug_output(o, "---- channels ----\n"); host1x_for_each_channel(host1x, ch) show_channels(ch, o, false); } 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); return 0; } static int host1x_debug_show(struct seq_file *s, void *unused) { struct output o = { .fn = write_to_seqfile, .ctx = s }; show_all_no_fifo(s->private, &o); 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); if (!de) return; /* 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); } void host1x_debug_dump_syncpts(struct host1x *host1x) { struct output o = { .fn = write_to_printk }; show_syncpts(host1x, &o); }