285 lines
7.1 KiB
C
285 lines
7.1 KiB
C
/*
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* drivers/video/tegra/host/debug.c
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*
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* Copyright (C) 2010 Google, Inc.
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* Author: Erik Gilling <konkers@android.com>
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*
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* Copyright (C) 2011-2013, NVIDIA Corporation. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/uaccess.h>
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#include <linux/io.h>
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#include "dev.h"
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#include "debug.h"
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#include "nvhost_acm.h"
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#include "nvhost_channel.h"
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#include "chip_support.h"
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pid_t nvhost_debug_null_kickoff_pid;
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unsigned int nvhost_debug_trace_cmdbuf;
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pid_t nvhost_debug_force_timeout_pid;
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u32 nvhost_debug_force_timeout_val;
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u32 nvhost_debug_force_timeout_channel;
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u32 nvhost_debug_force_timeout_dump;
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void nvhost_debug_output(struct output *o, const char *fmt, ...)
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{
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va_list args;
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int len;
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va_start(args, fmt);
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len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
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va_end(args);
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o->fn(o->ctx, o->buf, len);
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}
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static int show_channels(struct platform_device *pdev, void *data,
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int locked_id)
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{
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struct nvhost_channel *ch;
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struct output *o = data;
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struct nvhost_master *m;
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struct nvhost_device_data *pdata;
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if (pdev == NULL)
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return 0;
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pdata = platform_get_drvdata(pdev);
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m = nvhost_get_host(pdev);
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ch = nvhost_getchannel(pdata->channel, true);
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if (!ch) {
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nvhost_err(&pdev->dev, "cannot init channel");
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return 0;
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}
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if (ch->chid != locked_id)
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mutex_lock(&ch->cdma.lock);
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nvhost_get_chip_ops()->debug.show_channel_fifo(
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m, ch, o, pdata->index);
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nvhost_get_chip_ops()->debug.show_channel_cdma(
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m, ch, o, pdata->index);
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if (ch->chid != locked_id)
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mutex_unlock(&ch->cdma.lock);
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nvhost_putchannel(ch);
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return 0;
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}
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static void show_syncpts(struct nvhost_master *m, struct output *o)
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{
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int i;
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nvhost_debug_output(o, "---- syncpts ----\n");
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for (i = 0; i < nvhost_syncpt_nb_pts(&m->syncpt); i++) {
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u32 max = nvhost_syncpt_read_max(&m->syncpt, i);
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u32 min = nvhost_syncpt_update_min(&m->syncpt, i);
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if (!min && !max)
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continue;
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nvhost_debug_output(o, "id %d (%s) min %d max %d\n",
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i, nvhost_get_chip_ops()->syncpt.name(&m->syncpt, i),
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min, max);
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}
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for (i = 0; i < nvhost_syncpt_nb_bases(&m->syncpt); i++) {
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u32 base_val;
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base_val = nvhost_syncpt_read_wait_base(&m->syncpt, i);
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if (base_val)
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nvhost_debug_output(o, "waitbase id %d val %d\n",
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i, base_val);
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}
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nvhost_debug_output(o, "\n");
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}
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static void show_all(struct nvhost_master *m, struct output *o,
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int locked_id)
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{
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nvhost_module_busy(m->dev);
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nvhost_get_chip_ops()->debug.show_mlocks(m, o);
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show_syncpts(m, o);
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nvhost_debug_output(o, "---- channels ----\n");
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nvhost_device_list_for_all(o, show_channels, locked_id);
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nvhost_module_idle(m->dev);
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}
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#ifdef CONFIG_DEBUG_FS
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static int show_channels_no_fifo(struct platform_device *pdev, void *data,
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int locked_id)
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{
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struct nvhost_channel *ch;
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struct output *o = data;
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struct nvhost_master *m;
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struct nvhost_device_data *pdata;
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if (pdev == NULL)
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return 0;
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pdata = platform_get_drvdata(pdev);
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m = nvhost_get_host(pdev);
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ch = pdata->channel;
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if (ch) {
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mutex_lock(&ch->reflock);
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if (ch->refcount) {
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if (locked_id != ch->chid)
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mutex_lock(&ch->cdma.lock);
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nvhost_get_chip_ops()->debug.show_channel_cdma(m,
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ch, o, pdata->index);
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if (locked_id != ch->chid)
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mutex_unlock(&ch->cdma.lock);
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}
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mutex_unlock(&ch->reflock);
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}
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return 0;
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}
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static void show_all_no_fifo(struct nvhost_master *m, struct output *o,
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int locked_id)
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{
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nvhost_module_busy(m->dev);
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nvhost_get_chip_ops()->debug.show_mlocks(m, o);
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show_syncpts(m, o);
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nvhost_debug_output(o, "---- channels ----\n");
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nvhost_device_list_for_all(o, show_channels_no_fifo, locked_id);
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nvhost_module_idle(m->dev);
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}
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static int nvhost_debug_show_all(struct seq_file *s, void *unused)
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{
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struct output o = {
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.fn = write_to_seqfile,
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.ctx = s
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};
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show_all(s->private, &o, -1);
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return 0;
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}
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static int nvhost_debug_show(struct seq_file *s, void *unused)
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{
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struct output o = {
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.fn = write_to_seqfile,
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.ctx = s
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};
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show_all_no_fifo(s->private, &o, -1);
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return 0;
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}
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static int nvhost_debug_open_all(struct inode *inode, struct file *file)
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{
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return single_open(file, nvhost_debug_show_all, inode->i_private);
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}
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static const struct file_operations nvhost_debug_all_fops = {
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.open = nvhost_debug_open_all,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static int nvhost_debug_open(struct inode *inode, struct file *file)
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{
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return single_open(file, nvhost_debug_show, inode->i_private);
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}
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static const struct file_operations nvhost_debug_fops = {
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.open = nvhost_debug_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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void nvhost_device_debug_init(struct platform_device *dev)
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{
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struct nvhost_device_data *pdata = platform_get_drvdata(dev);
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pdata->debugfs = debugfs_create_dir(dev->name, pdata->debugfs);
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}
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void nvhost_device_debug_deinit(struct platform_device *dev)
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{
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struct nvhost_device_data *pdata = platform_get_drvdata(dev);
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if (!IS_ERR_OR_NULL(pdata->debugfs))
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debugfs_remove(pdata->debugfs);
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pdata->debugfs = NULL;
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}
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void nvhost_debug_init(struct nvhost_master *master)
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{
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struct nvhost_device_data *pdata;
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struct dentry *de = debugfs_create_dir("tegra_host", NULL);
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if (!de)
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return;
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pdata = platform_get_drvdata(master->dev);
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/* Store the created entry */
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pdata->debugfs = de;
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debugfs_create_file("status", S_IRUGO, de,
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master, &nvhost_debug_fops);
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debugfs_create_file("status_all", S_IRUGO, de,
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master, &nvhost_debug_all_fops);
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debugfs_create_u32("null_kickoff_pid", S_IRUGO|S_IWUSR, de,
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&nvhost_debug_null_kickoff_pid);
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debugfs_create_u32("trace_cmdbuf", S_IRUGO|S_IWUSR, de,
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&nvhost_debug_trace_cmdbuf);
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if (nvhost_get_chip_ops()->debug.debug_init)
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nvhost_get_chip_ops()->debug.debug_init(de);
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debugfs_create_u32("force_timeout_pid", S_IRUGO|S_IWUSR, de,
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&nvhost_debug_force_timeout_pid);
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debugfs_create_u32("force_timeout_val", S_IRUGO|S_IWUSR, de,
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&nvhost_debug_force_timeout_val);
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debugfs_create_u32("force_timeout_channel", S_IRUGO|S_IWUSR, de,
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&nvhost_debug_force_timeout_channel);
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debugfs_create_u32("force_timeout_dump", S_IRUGO|S_IWUSR, de,
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&nvhost_debug_force_timeout_dump);
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nvhost_debug_force_timeout_dump = 0;
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#if defined(NVHOST_DEBUG)
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debugfs_create_u32("dbg_mask", S_IRUGO|S_IWUSR, de,
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&nvhost_dbg_mask);
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debugfs_create_u32("dbg_ftrace", S_IRUGO|S_IWUSR, de,
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&nvhost_dbg_ftrace);
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#endif
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debugfs_create_u32("timeout_default_ms", S_IRUGO|S_IWUSR, de,
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&pdata->nvhost_timeout_default);
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}
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void nvhost_debug_dump_locked(struct nvhost_master *master, int locked_id)
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{
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struct output o = {
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.fn = write_to_printk
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};
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show_all(master, &o, locked_id);
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}
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void nvhost_debug_dump(struct nvhost_master *master)
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{
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struct output o = {
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.fn = write_to_printk
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};
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show_all(master, &o, -1);
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}
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#endif
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