| // 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/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, 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; |
| |
| 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); |
| |
| return 0; |
| } |
| |
| static void show_syncpts(struct host1x *m, struct output *o) |
| { |
| unsigned 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 %u (%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 %u val %d\n", i, |
| base_val); |
| } |
| |
| 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); |
| 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); |
| |
| 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, true); |
| } |
| |
| void host1x_debug_dump_syncpts(struct host1x *host1x) |
| { |
| struct output o = { |
| .fn = write_to_printk |
| }; |
| |
| show_syncpts(host1x, &o); |
| } |