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) 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 return ret; 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 kfree(show_priv); 98 return ret; 99 } 100 101 show_priv->dev = dev; 102 103 return single_open(file, msm_gpu_show, show_priv); 104 } 105 106 static const struct file_operations msm_gpu_fops = { 107 .owner = THIS_MODULE, 108 .open = msm_gpu_open, 109 .read = seq_read, 110 .llseek = seq_lseek, 111 .release = msm_gpu_release, 112 }; 113 114 static int msm_gem_show(struct drm_device *dev, struct seq_file *m) 115 { 116 struct msm_drm_private *priv = dev->dev_private; 117 struct msm_gpu *gpu = priv->gpu; 118 119 if (gpu) { 120 seq_printf(m, "Active Objects (%s):\n", gpu->name); 121 msm_gem_describe_objects(&gpu->active_list, m); 122 } 123 124 seq_printf(m, "Inactive Objects:\n"); 125 msm_gem_describe_objects(&priv->inactive_list, m); 126 127 return 0; 128 } 129 130 static int msm_mm_show(struct drm_device *dev, struct seq_file *m) 131 { 132 struct drm_printer p = drm_seq_file_printer(m); 133 134 drm_mm_print(&dev->vma_offset_manager->vm_addr_space_mm, &p); 135 136 return 0; 137 } 138 139 static int msm_fb_show(struct drm_device *dev, struct seq_file *m) 140 { 141 struct msm_drm_private *priv = dev->dev_private; 142 struct drm_framebuffer *fb, *fbdev_fb = NULL; 143 144 if (priv->fbdev) { 145 seq_printf(m, "fbcon "); 146 fbdev_fb = priv->fbdev->fb; 147 msm_framebuffer_describe(fbdev_fb, m); 148 } 149 150 mutex_lock(&dev->mode_config.fb_lock); 151 list_for_each_entry(fb, &dev->mode_config.fb_list, head) { 152 if (fb == fbdev_fb) 153 continue; 154 155 seq_printf(m, "user "); 156 msm_framebuffer_describe(fb, m); 157 } 158 mutex_unlock(&dev->mode_config.fb_lock); 159 160 return 0; 161 } 162 163 static int show_locked(struct seq_file *m, void *arg) 164 { 165 struct drm_info_node *node = (struct drm_info_node *) m->private; 166 struct drm_device *dev = node->minor->dev; 167 int (*show)(struct drm_device *dev, struct seq_file *m) = 168 node->info_ent->data; 169 int ret; 170 171 ret = mutex_lock_interruptible(&dev->struct_mutex); 172 if (ret) 173 return ret; 174 175 ret = show(dev, m); 176 177 mutex_unlock(&dev->struct_mutex); 178 179 return ret; 180 } 181 182 static struct drm_info_list msm_debugfs_list[] = { 183 {"gem", show_locked, 0, msm_gem_show}, 184 { "mm", show_locked, 0, msm_mm_show }, 185 { "fb", show_locked, 0, msm_fb_show }, 186 }; 187 188 static int late_init_minor(struct drm_minor *minor) 189 { 190 int ret; 191 192 if (!minor) 193 return 0; 194 195 ret = msm_rd_debugfs_init(minor); 196 if (ret) { 197 dev_err(minor->dev->dev, "could not install rd debugfs\n"); 198 return ret; 199 } 200 201 ret = msm_perf_debugfs_init(minor); 202 if (ret) { 203 dev_err(minor->dev->dev, "could not install perf debugfs\n"); 204 return ret; 205 } 206 207 return 0; 208 } 209 210 int msm_debugfs_late_init(struct drm_device *dev) 211 { 212 int ret; 213 ret = late_init_minor(dev->primary); 214 if (ret) 215 return ret; 216 ret = late_init_minor(dev->render); 217 return ret; 218 } 219 220 int msm_debugfs_init(struct drm_minor *minor) 221 { 222 struct drm_device *dev = minor->dev; 223 struct msm_drm_private *priv = dev->dev_private; 224 int ret; 225 226 ret = drm_debugfs_create_files(msm_debugfs_list, 227 ARRAY_SIZE(msm_debugfs_list), 228 minor->debugfs_root, minor); 229 230 if (ret) { 231 dev_err(dev->dev, "could not install msm_debugfs_list\n"); 232 return ret; 233 } 234 235 debugfs_create_file("gpu", S_IRUSR, minor->debugfs_root, 236 dev, &msm_gpu_fops); 237 238 if (priv->kms->funcs->debugfs_init) { 239 ret = priv->kms->funcs->debugfs_init(priv->kms, minor); 240 if (ret) 241 return ret; 242 } 243 244 return ret; 245 } 246 #endif 247 248