linux-zen-desktop/drivers/gpu/drm/msm/msm_debugfs.c

352 lines
7.4 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2013-2016 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*/
#ifdef CONFIG_DEBUG_FS
#include <linux/debugfs.h>
#include <linux/fault-inject.h>
#include <drm/drm_debugfs.h>
#include <drm/drm_file.h>
#include <drm/drm_framebuffer.h>
#include "msm_drv.h"
#include "msm_gpu.h"
#include "msm_kms.h"
#include "msm_debugfs.h"
#include "disp/msm_disp_snapshot.h"
/*
* GPU Snapshot:
*/
struct msm_gpu_show_priv {
struct msm_gpu_state *state;
struct drm_device *dev;
};
static int msm_gpu_show(struct seq_file *m, void *arg)
{
struct drm_printer p = drm_seq_file_printer(m);
struct msm_gpu_show_priv *show_priv = m->private;
struct msm_drm_private *priv = show_priv->dev->dev_private;
struct msm_gpu *gpu = priv->gpu;
int ret;
ret = mutex_lock_interruptible(&gpu->lock);
if (ret)
return ret;
drm_printf(&p, "%s Status:\n", gpu->name);
gpu->funcs->show(gpu, show_priv->state, &p);
mutex_unlock(&gpu->lock);
return 0;
}
static int msm_gpu_release(struct inode *inode, struct file *file)
{
struct seq_file *m = file->private_data;
struct msm_gpu_show_priv *show_priv = m->private;
struct msm_drm_private *priv = show_priv->dev->dev_private;
struct msm_gpu *gpu = priv->gpu;
mutex_lock(&gpu->lock);
gpu->funcs->gpu_state_put(show_priv->state);
mutex_unlock(&gpu->lock);
kfree(show_priv);
return single_release(inode, file);
}
static int msm_gpu_open(struct inode *inode, struct file *file)
{
struct drm_device *dev = inode->i_private;
struct msm_drm_private *priv = dev->dev_private;
struct msm_gpu *gpu = priv->gpu;
struct msm_gpu_show_priv *show_priv;
int ret;
if (!gpu || !gpu->funcs->gpu_state_get)
return -ENODEV;
show_priv = kmalloc(sizeof(*show_priv), GFP_KERNEL);
if (!show_priv)
return -ENOMEM;
ret = mutex_lock_interruptible(&gpu->lock);
if (ret)
goto free_priv;
pm_runtime_get_sync(&gpu->pdev->dev);
msm_gpu_hw_init(gpu);
show_priv->state = gpu->funcs->gpu_state_get(gpu);
pm_runtime_put_sync(&gpu->pdev->dev);
mutex_unlock(&gpu->lock);
if (IS_ERR(show_priv->state)) {
ret = PTR_ERR(show_priv->state);
goto free_priv;
}
show_priv->dev = dev;
ret = single_open(file, msm_gpu_show, show_priv);
if (ret)
goto free_priv;
return 0;
free_priv:
kfree(show_priv);
return ret;
}
static const struct file_operations msm_gpu_fops = {
.owner = THIS_MODULE,
.open = msm_gpu_open,
.read = seq_read,
.llseek = seq_lseek,
.release = msm_gpu_release,
};
/*
* Display Snapshot:
*/
static int msm_kms_show(struct seq_file *m, void *arg)
{
struct drm_printer p = drm_seq_file_printer(m);
struct msm_disp_state *state = m->private;
msm_disp_state_print(state, &p);
return 0;
}
static int msm_kms_release(struct inode *inode, struct file *file)
{
struct seq_file *m = file->private_data;
struct msm_disp_state *state = m->private;
msm_disp_state_free(state);
return single_release(inode, file);
}
static int msm_kms_open(struct inode *inode, struct file *file)
{
struct drm_device *dev = inode->i_private;
struct msm_drm_private *priv = dev->dev_private;
struct msm_disp_state *state;
int ret;
if (!priv->kms)
return -ENODEV;
ret = mutex_lock_interruptible(&priv->kms->dump_mutex);
if (ret)
return ret;
state = msm_disp_snapshot_state_sync(priv->kms);
mutex_unlock(&priv->kms->dump_mutex);
if (IS_ERR(state)) {
return PTR_ERR(state);
}
ret = single_open(file, msm_kms_show, state);
if (ret) {
msm_disp_state_free(state);
return ret;
}
return 0;
}
static const struct file_operations msm_kms_fops = {
.owner = THIS_MODULE,
.open = msm_kms_open,
.read = seq_read,
.llseek = seq_lseek,
.release = msm_kms_release,
};
/*
* Other debugfs:
*/
static unsigned long last_shrink_freed;
static int
shrink_get(void *data, u64 *val)
{
*val = last_shrink_freed;
return 0;
}
static int
shrink_set(void *data, u64 val)
{
struct drm_device *dev = data;
last_shrink_freed = msm_gem_shrinker_shrink(dev, val);
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(shrink_fops,
shrink_get, shrink_set,
"0x%08llx\n");
static int msm_gem_show(struct seq_file *m, void *arg)
{
struct drm_info_node *node = (struct drm_info_node *) m->private;
struct drm_device *dev = node->minor->dev;
struct msm_drm_private *priv = dev->dev_private;
int ret;
ret = mutex_lock_interruptible(&priv->obj_lock);
if (ret)
return ret;
msm_gem_describe_objects(&priv->objects, m);
mutex_unlock(&priv->obj_lock);
return 0;
}
static int msm_mm_show(struct seq_file *m, void *arg)
{
struct drm_info_node *node = (struct drm_info_node *) m->private;
struct drm_device *dev = node->minor->dev;
struct drm_printer p = drm_seq_file_printer(m);
drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p);
return 0;
}
static int msm_fb_show(struct seq_file *m, void *arg)
{
struct drm_info_node *node = (struct drm_info_node *) m->private;
struct drm_device *dev = node->minor->dev;
struct msm_drm_private *priv = dev->dev_private;
struct drm_framebuffer *fb, *fbdev_fb = NULL;
if (priv->fbdev) {
seq_printf(m, "fbcon ");
fbdev_fb = priv->fbdev->fb;
msm_framebuffer_describe(fbdev_fb, m);
}
mutex_lock(&dev->mode_config.fb_lock);
list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
if (fb == fbdev_fb)
continue;
seq_printf(m, "user ");
msm_framebuffer_describe(fb, m);
}
mutex_unlock(&dev->mode_config.fb_lock);
return 0;
}
static struct drm_info_list msm_debugfs_list[] = {
{"gem", msm_gem_show},
{ "mm", msm_mm_show },
{ "fb", msm_fb_show },
};
static int late_init_minor(struct drm_minor *minor)
{
int ret;
if (!minor)
return 0;
ret = msm_rd_debugfs_init(minor);
if (ret) {
DRM_DEV_ERROR(minor->dev->dev, "could not install rd debugfs\n");
return ret;
}
ret = msm_perf_debugfs_init(minor);
if (ret) {
DRM_DEV_ERROR(minor->dev->dev, "could not install perf debugfs\n");
return ret;
}
return 0;
}
int msm_debugfs_late_init(struct drm_device *dev)
{
int ret;
ret = late_init_minor(dev->primary);
if (ret)
return ret;
ret = late_init_minor(dev->render);
return ret;
}
void msm_debugfs_init(struct drm_minor *minor)
{
struct drm_device *dev = minor->dev;
struct msm_drm_private *priv = dev->dev_private;
struct dentry *gpu_devfreq;
drm_debugfs_create_files(msm_debugfs_list,
ARRAY_SIZE(msm_debugfs_list),
minor->debugfs_root, minor);
debugfs_create_file("gpu", S_IRUSR, minor->debugfs_root,
dev, &msm_gpu_fops);
debugfs_create_file("kms", S_IRUSR, minor->debugfs_root,
dev, &msm_kms_fops);
debugfs_create_u32("hangcheck_period_ms", 0600, minor->debugfs_root,
&priv->hangcheck_period);
debugfs_create_bool("disable_err_irq", 0600, minor->debugfs_root,
&priv->disable_err_irq);
debugfs_create_file("shrink", S_IRWXU, minor->debugfs_root,
dev, &shrink_fops);
gpu_devfreq = debugfs_create_dir("devfreq", minor->debugfs_root);
debugfs_create_bool("idle_clamp",0600, gpu_devfreq,
&priv->gpu_clamp_to_idle);
debugfs_create_u32("upthreshold",0600, gpu_devfreq,
&priv->gpu_devfreq_config.upthreshold);
debugfs_create_u32("downdifferential",0600, gpu_devfreq,
&priv->gpu_devfreq_config.downdifferential);
if (priv->kms && priv->kms->funcs->debugfs_init)
priv->kms->funcs->debugfs_init(priv->kms, minor);
#ifdef CONFIG_FAULT_INJECTION
fault_create_debugfs_attr("fail_gem_alloc", minor->debugfs_root,
&fail_gem_alloc);
fault_create_debugfs_attr("fail_gem_iova", minor->debugfs_root,
&fail_gem_iova);
#endif
}
#endif