1 files changed, 339 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_debugfs.c b/drivers/gpu/drm/msm/msm_debugfs.c
new file mode 100644
index 000000000..95f4374ae
--- /dev/null
+++ b/drivers/gpu/drm/msm/msm_debugfs.c
@@ -0,0 +1,339 @@
+// 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;
+
+	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);
+
+	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
+