1 /* 2 * Copyright (C) 2013-2016 Red Hat 3 * Author: Rob Clark <robdclark@gmail.com> 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 as published by 7 * the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 12 * more details. 13 * 14 * You should have received a copy of the GNU General Public License along with 15 * this program. If not, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #ifdef CONFIG_DEBUG_FS 19 #include <linux/debugfs.h> 20 #include "msm_drv.h" 21 #include "msm_gpu.h" 22 #include "msm_kms.h" 23 #include "msm_debugfs.h" 24 25 struct msm_gpu_show_priv { 26 struct msm_gpu_state *state; 27 struct drm_device *dev; 28 }; 29 30 static int msm_gpu_show(struct seq_file *m, void *arg) 31 { 32 struct drm_printer p = drm_seq_file_printer(m); 33 struct msm_gpu_show_priv *show_priv = m->private; 34 struct msm_drm_private *priv = show_priv->dev->dev_private; 35 struct msm_gpu *gpu = priv->gpu; 36 int ret; 37 38 ret = mutex_lock_interruptible(&show_priv->dev->struct_mutex); 39 if (ret) 40 return ret; 41 42 drm_printf(&p, "%s Status:\n", gpu->name); 43 gpu->funcs->show(gpu, show_priv->state, &p); 44 45 mutex_unlock(&show_priv->dev->struct_mutex); 46 47 return 0; 48 } 49 50 static int msm_gpu_release(struct inode *inode, struct file *file) 51 { 52 struct seq_file *m = file->private_data; 53 struct msm_gpu_show_priv *show_priv = m->private; 54 struct msm_drm_private *priv = show_priv->dev->dev_private; 55 struct msm_gpu *gpu = priv->gpu; 56 int ret; 57 58 ret = mutex_lock_interruptible(&show_priv->dev->struct_mutex); 59 if (ret) 60 return ret; 61 62 gpu->funcs->gpu_state_put(show_priv->state); 63 mutex_unlock(&show_priv->dev->struct_mutex); 64 65 kfree(show_priv); 66 67 return single_release(inode, file); 68 } 69 70 static int msm_gpu_open(struct inode *inode, struct file *file) 71 { 72 struct drm_device *dev = inode->i_private; 73 struct msm_drm_private *priv = dev->dev_private; 74 struct msm_gpu *gpu = priv->gpu; 75 struct msm_gpu_show_priv *show_priv; 76 int ret; 77 78 if (!gpu || !gpu->funcs->gpu_state_get) 79 return -ENODEV; 80 81 show_priv = kmalloc(sizeof(*show_priv), GFP_KERNEL); 82 if (!show_priv) 83 return -ENOMEM; 84 85 ret = mutex_lock_interruptible(&dev->struct_mutex); 86 if (ret) 87 goto free_priv; 88 89 pm_runtime_get_sync(&gpu->pdev->dev); 90 show_priv->state = gpu->funcs->gpu_state_get(gpu); 91 pm_runtime_put_sync(&gpu->pdev->dev); 92 93 mutex_unlock(&dev->struct_mutex); 94 95 if (IS_ERR(show_priv->state)) { 96 ret = PTR_ERR(show_priv->state); 97 goto free_priv; 98 } 99 100 show_priv->dev = dev; 101 102 ret = single_open(file, msm_gpu_show, show_priv); 103 if (ret) 104 goto free_priv; 105 106 return 0; 107 108 free_priv: 109 kfree(show_priv); 110 return ret; 111 } 112 113 static const struct file_operations msm_gpu_fops = { 114 .owner = THIS_MODULE, 115 .open = msm_gpu_open, 116 .read = seq_read, 117 .llseek = seq_lseek, 118 .release = msm_gpu_release, 119 }; 120 121 static int msm_gem_show(struct drm_device *dev, struct seq_file *m) 122 { 123 struct msm_drm_private *priv = dev->dev_private; 124 struct msm_gpu *gpu = priv->gpu; 125 126 if (gpu) { 127 seq_printf(m, "Active Objects (%s):\n", gpu->name); 128 msm_gem_describe_objects(&gpu->active_list, m); 129 } 130 131 seq_printf(m, "Inactive Objects:\n"); 132 msm_gem_describe_objects(&priv->inactive_list, m); 133 134 return 0; 135 } 136 137 static int msm_mm_show(struct drm_device *dev, struct seq_file *m) 138 { 139 struct drm_printer p = drm_seq_file_printer(m); 140 141 drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p); 142 143 return 0; 144 } 145 146 static int msm_fb_show(struct drm_device *dev, struct seq_file *m) 147 { 148 struct msm_drm_private *priv = dev->dev_private; 149 struct drm_framebuffer *fb, *fbdev_fb = NULL; 150 151 if (priv->fbdev) { 152 seq_printf(m, "fbcon "); 153 fbdev_fb = priv->fbdev->fb; 154 msm_framebuffer_describe(fbdev_fb, m); 155 } 156 157 mutex_lock(&dev->mode_config.fb_lock); 158 list_for_each_entry(fb, &dev->mode_config.fb_list, head) { 159 if (fb == fbdev_fb) 160 continue; 161 162 seq_printf(m, "user "); 163 msm_framebuffer_describe(fb, m); 164 } 165 mutex_unlock(&dev->mode_config.fb_lock); 166 167 return 0; 168 } 169 170 static int show_locked(struct seq_file *m, void *arg) 171 { 172 struct drm_info_node *node = (struct drm_info_node *) m->private; 173 struct drm_device *dev = node->minor->dev; 174 int (*show)(struct drm_device *dev, struct seq_file *m) = 175 node->info_ent->data; 176 int ret; 177 178 ret = mutex_lock_interruptible(&dev->struct_mutex); 179 if (ret) 180 return ret; 181 182 ret = show(dev, m); 183 184 mutex_unlock(&dev->struct_mutex); 185 186 return ret; 187 } 188 189 static struct drm_info_list msm_debugfs_list[] = { 190 {"gem", show_locked, 0, msm_gem_show}, 191 { "mm", show_locked, 0, msm_mm_show }, 192 { "fb", show_locked, 0, msm_fb_show }, 193 }; 194 195 static int late_init_minor(struct drm_minor *minor) 196 { 197 int ret; 198 199 if (!minor) 200 return 0; 201 202 ret = msm_rd_debugfs_init(minor); 203 if (ret) { 204 DRM_DEV_ERROR(minor->dev->dev, "could not install rd debugfs\n"); 205 return ret; 206 } 207 208 ret = msm_perf_debugfs_init(minor); 209 if (ret) { 210 DRM_DEV_ERROR(minor->dev->dev, "could not install perf debugfs\n"); 211 return ret; 212 } 213 214 return 0; 215 } 216 217 int msm_debugfs_late_init(struct drm_device *dev) 218 { 219 int ret; 220 ret = late_init_minor(dev->primary); 221 if (ret) 222 return ret; 223 ret = late_init_minor(dev->render); 224 return ret; 225 } 226 227 int msm_debugfs_init(struct drm_minor *minor) 228 { 229 struct drm_device *dev = minor->dev; 230 struct msm_drm_private *priv = dev->dev_private; 231 int ret; 232 233 ret = drm_debugfs_create_files(msm_debugfs_list, 234 ARRAY_SIZE(msm_debugfs_list), 235 minor->debugfs_root, minor); 236 237 if (ret) { 238 DRM_DEV_ERROR(dev->dev, "could not install msm_debugfs_list\n"); 239 return ret; 240 } 241 242 debugfs_create_file("gpu", S_IRUSR, minor->debugfs_root, 243 dev, &msm_gpu_fops); 244 245 if (priv->kms && priv->kms->funcs->debugfs_init) { 246 ret = priv->kms->funcs->debugfs_init(priv->kms, minor); 247 if (ret) 248 return ret; 249 } 250 251 return ret; 252 } 253 #endif 254 255