1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) 2013-2016 Red Hat 4 * Author: Rob Clark <robdclark@gmail.com> 5 */ 6 7 #ifdef CONFIG_DEBUG_FS 8 9 #include <linux/debugfs.h> 10 11 #include <drm/drm_debugfs.h> 12 #include <drm/drm_file.h> 13 14 #include "msm_drv.h" 15 #include "msm_gpu.h" 16 #include "msm_kms.h" 17 #include "msm_debugfs.h" 18 19 struct msm_gpu_show_priv { 20 struct msm_gpu_state *state; 21 struct drm_device *dev; 22 }; 23 24 static int msm_gpu_show(struct seq_file *m, void *arg) 25 { 26 struct drm_printer p = drm_seq_file_printer(m); 27 struct msm_gpu_show_priv *show_priv = m->private; 28 struct msm_drm_private *priv = show_priv->dev->dev_private; 29 struct msm_gpu *gpu = priv->gpu; 30 int ret; 31 32 ret = mutex_lock_interruptible(&show_priv->dev->struct_mutex); 33 if (ret) 34 return ret; 35 36 drm_printf(&p, "%s Status:\n", gpu->name); 37 gpu->funcs->show(gpu, show_priv->state, &p); 38 39 mutex_unlock(&show_priv->dev->struct_mutex); 40 41 return 0; 42 } 43 44 static int msm_gpu_release(struct inode *inode, struct file *file) 45 { 46 struct seq_file *m = file->private_data; 47 struct msm_gpu_show_priv *show_priv = m->private; 48 struct msm_drm_private *priv = show_priv->dev->dev_private; 49 struct msm_gpu *gpu = priv->gpu; 50 51 mutex_lock(&show_priv->dev->struct_mutex); 52 gpu->funcs->gpu_state_put(show_priv->state); 53 mutex_unlock(&show_priv->dev->struct_mutex); 54 55 kfree(show_priv); 56 57 return single_release(inode, file); 58 } 59 60 static int msm_gpu_open(struct inode *inode, struct file *file) 61 { 62 struct drm_device *dev = inode->i_private; 63 struct msm_drm_private *priv = dev->dev_private; 64 struct msm_gpu *gpu = priv->gpu; 65 struct msm_gpu_show_priv *show_priv; 66 int ret; 67 68 if (!gpu || !gpu->funcs->gpu_state_get) 69 return -ENODEV; 70 71 show_priv = kmalloc(sizeof(*show_priv), GFP_KERNEL); 72 if (!show_priv) 73 return -ENOMEM; 74 75 ret = mutex_lock_interruptible(&dev->struct_mutex); 76 if (ret) 77 goto free_priv; 78 79 pm_runtime_get_sync(&gpu->pdev->dev); 80 show_priv->state = gpu->funcs->gpu_state_get(gpu); 81 pm_runtime_put_sync(&gpu->pdev->dev); 82 83 mutex_unlock(&dev->struct_mutex); 84 85 if (IS_ERR(show_priv->state)) { 86 ret = PTR_ERR(show_priv->state); 87 goto free_priv; 88 } 89 90 show_priv->dev = dev; 91 92 ret = single_open(file, msm_gpu_show, show_priv); 93 if (ret) 94 goto free_priv; 95 96 return 0; 97 98 free_priv: 99 kfree(show_priv); 100 return ret; 101 } 102 103 static const struct file_operations msm_gpu_fops = { 104 .owner = THIS_MODULE, 105 .open = msm_gpu_open, 106 .read = seq_read, 107 .llseek = seq_lseek, 108 .release = msm_gpu_release, 109 }; 110 111 static int msm_gem_show(struct drm_device *dev, struct seq_file *m) 112 { 113 struct msm_drm_private *priv = dev->dev_private; 114 struct msm_gpu *gpu = priv->gpu; 115 int ret; 116 117 ret = mutex_lock_interruptible(&priv->mm_lock); 118 if (ret) 119 return ret; 120 121 if (gpu) { 122 seq_printf(m, "Active Objects (%s):\n", gpu->name); 123 msm_gem_describe_objects(&gpu->active_list, m); 124 } 125 126 seq_printf(m, "Inactive Objects:\n"); 127 msm_gem_describe_objects(&priv->inactive_dontneed, m); 128 msm_gem_describe_objects(&priv->inactive_willneed, m); 129 130 mutex_unlock(&priv->mm_lock); 131 132 return 0; 133 } 134 135 static int msm_mm_show(struct drm_device *dev, struct seq_file *m) 136 { 137 struct drm_printer p = drm_seq_file_printer(m); 138 139 drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p); 140 141 return 0; 142 } 143 144 static int msm_fb_show(struct drm_device *dev, struct seq_file *m) 145 { 146 struct msm_drm_private *priv = dev->dev_private; 147 struct drm_framebuffer *fb, *fbdev_fb = NULL; 148 149 if (priv->fbdev) { 150 seq_printf(m, "fbcon "); 151 fbdev_fb = priv->fbdev->fb; 152 msm_framebuffer_describe(fbdev_fb, m); 153 } 154 155 mutex_lock(&dev->mode_config.fb_lock); 156 list_for_each_entry(fb, &dev->mode_config.fb_list, head) { 157 if (fb == fbdev_fb) 158 continue; 159 160 seq_printf(m, "user "); 161 msm_framebuffer_describe(fb, m); 162 } 163 mutex_unlock(&dev->mode_config.fb_lock); 164 165 return 0; 166 } 167 168 static int show_locked(struct seq_file *m, void *arg) 169 { 170 struct drm_info_node *node = (struct drm_info_node *) m->private; 171 struct drm_device *dev = node->minor->dev; 172 int (*show)(struct drm_device *dev, struct seq_file *m) = 173 node->info_ent->data; 174 int ret; 175 176 ret = mutex_lock_interruptible(&dev->struct_mutex); 177 if (ret) 178 return ret; 179 180 ret = show(dev, m); 181 182 mutex_unlock(&dev->struct_mutex); 183 184 return ret; 185 } 186 187 static struct drm_info_list msm_debugfs_list[] = { 188 {"gem", show_locked, 0, msm_gem_show}, 189 { "mm", show_locked, 0, msm_mm_show }, 190 { "fb", show_locked, 0, msm_fb_show }, 191 }; 192 193 static int late_init_minor(struct drm_minor *minor) 194 { 195 int ret; 196 197 if (!minor) 198 return 0; 199 200 ret = msm_rd_debugfs_init(minor); 201 if (ret) { 202 DRM_DEV_ERROR(minor->dev->dev, "could not install rd debugfs\n"); 203 return ret; 204 } 205 206 ret = msm_perf_debugfs_init(minor); 207 if (ret) { 208 DRM_DEV_ERROR(minor->dev->dev, "could not install perf debugfs\n"); 209 return ret; 210 } 211 212 return 0; 213 } 214 215 int msm_debugfs_late_init(struct drm_device *dev) 216 { 217 int ret; 218 ret = late_init_minor(dev->primary); 219 if (ret) 220 return ret; 221 ret = late_init_minor(dev->render); 222 return ret; 223 } 224 225 void msm_debugfs_init(struct drm_minor *minor) 226 { 227 struct drm_device *dev = minor->dev; 228 struct msm_drm_private *priv = dev->dev_private; 229 230 drm_debugfs_create_files(msm_debugfs_list, 231 ARRAY_SIZE(msm_debugfs_list), 232 minor->debugfs_root, minor); 233 234 debugfs_create_file("gpu", S_IRUSR, minor->debugfs_root, 235 dev, &msm_gpu_fops); 236 237 if (priv->kms && priv->kms->funcs->debugfs_init) 238 priv->kms->funcs->debugfs_init(priv->kms, minor); 239 } 240 #endif 241 242