1/** 2 * \file drm_info.c 3 * DRM info file implementations 4 * 5 * \author Ben Gamari <bgamari@gmail.com> 6 */ 7 8/* 9 * Created: Sun Dec 21 13:09:50 2008 by bgamari@gmail.com 10 * 11 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. 12 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 13 * Copyright 2008 Ben Gamari <bgamari@gmail.com> 14 * All Rights Reserved. 15 * 16 * Permission is hereby granted, free of charge, to any person obtaining a 17 * copy of this software and associated documentation files (the "Software"), 18 * to deal in the Software without restriction, including without limitation 19 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 20 * and/or sell copies of the Software, and to permit persons to whom the 21 * Software is furnished to do so, subject to the following conditions: 22 * 23 * The above copyright notice and this permission notice (including the next 24 * paragraph) shall be included in all copies or substantial portions of the 25 * Software. 26 * 27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 28 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 29 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 30 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 31 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 32 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 33 * OTHER DEALINGS IN THE SOFTWARE. 34 */ 35 36#include <linux/seq_file.h> 37#include <drm/drmP.h> 38#include <drm/drm_gem.h> 39 40#include "drm_legacy.h" 41 42/** 43 * Called when "/proc/dri/.../name" is read. 44 * 45 * Prints the device name together with the bus id if available. 46 */ 47int drm_name_info(struct seq_file *m, void *data) 48{ 49 struct drm_info_node *node = (struct drm_info_node *) m->private; 50 struct drm_minor *minor = node->minor; 51 struct drm_device *dev = minor->dev; 52 struct drm_master *master = minor->master; 53 if (!master) 54 return 0; 55 56 if (master->unique) { 57 seq_printf(m, "%s %s %s\n", 58 dev->driver->name, 59 dev_name(dev->dev), master->unique); 60 } else { 61 seq_printf(m, "%s %s\n", 62 dev->driver->name, dev_name(dev->dev)); 63 } 64 return 0; 65} 66 67/** 68 * Called when "/proc/dri/.../vm" is read. 69 * 70 * Prints information about all mappings in drm_device::maplist. 71 */ 72int drm_vm_info(struct seq_file *m, void *data) 73{ 74 struct drm_info_node *node = (struct drm_info_node *) m->private; 75 struct drm_device *dev = node->minor->dev; 76 struct drm_local_map *map; 77 struct drm_map_list *r_list; 78 79 /* Hardcoded from _DRM_FRAME_BUFFER, 80 _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and 81 _DRM_SCATTER_GATHER and _DRM_CONSISTENT */ 82 const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" }; 83 const char *type; 84 int i; 85 86 mutex_lock(&dev->struct_mutex); 87 seq_printf(m, "slot offset size type flags address mtrr\n\n"); 88 i = 0; 89 list_for_each_entry(r_list, &dev->maplist, head) { 90 map = r_list->map; 91 if (!map) 92 continue; 93 if (map->type < 0 || map->type > 5) 94 type = "??"; 95 else 96 type = types[map->type]; 97 98 seq_printf(m, "%4d 0x%016llx 0x%08lx %4.4s 0x%02x 0x%08lx ", 99 i, 100 (unsigned long long)map->offset, 101 map->size, type, map->flags, 102 (unsigned long) r_list->user_token); 103 if (map->mtrr < 0) 104 seq_printf(m, "none\n"); 105 else 106 seq_printf(m, "%4d\n", map->mtrr); 107 i++; 108 } 109 mutex_unlock(&dev->struct_mutex); 110 return 0; 111} 112 113/** 114 * Called when "/proc/dri/.../bufs" is read. 115 */ 116int drm_bufs_info(struct seq_file *m, void *data) 117{ 118 struct drm_info_node *node = (struct drm_info_node *) m->private; 119 struct drm_device *dev = node->minor->dev; 120 struct drm_device_dma *dma; 121 int i, seg_pages; 122 123 mutex_lock(&dev->struct_mutex); 124 dma = dev->dma; 125 if (!dma) { 126 mutex_unlock(&dev->struct_mutex); 127 return 0; 128 } 129 130 seq_printf(m, " o size count free segs pages kB\n\n"); 131 for (i = 0; i <= DRM_MAX_ORDER; i++) { 132 if (dma->bufs[i].buf_count) { 133 seg_pages = dma->bufs[i].seg_count * (1 << dma->bufs[i].page_order); 134 seq_printf(m, "%2d %8d %5d %5d %5d %5d %5ld\n", 135 i, 136 dma->bufs[i].buf_size, 137 dma->bufs[i].buf_count, 138 0, 139 dma->bufs[i].seg_count, 140 seg_pages, 141 seg_pages * PAGE_SIZE / 1024); 142 } 143 } 144 seq_printf(m, "\n"); 145 for (i = 0; i < dma->buf_count; i++) { 146 if (i && !(i % 32)) 147 seq_printf(m, "\n"); 148 seq_printf(m, " %d", dma->buflist[i]->list); 149 } 150 seq_printf(m, "\n"); 151 mutex_unlock(&dev->struct_mutex); 152 return 0; 153} 154 155/** 156 * Called when "/proc/dri/.../vblank" is read. 157 */ 158int drm_vblank_info(struct seq_file *m, void *data) 159{ 160 struct drm_info_node *node = (struct drm_info_node *) m->private; 161 struct drm_device *dev = node->minor->dev; 162 int crtc; 163 164 mutex_lock(&dev->struct_mutex); 165 for (crtc = 0; crtc < dev->num_crtcs; crtc++) { 166 seq_printf(m, "CRTC %d enable: %d\n", 167 crtc, atomic_read(&dev->vblank[crtc].refcount)); 168 seq_printf(m, "CRTC %d counter: %d\n", 169 crtc, drm_vblank_count(dev, crtc)); 170 seq_printf(m, "CRTC %d last wait: %d\n", 171 crtc, dev->vblank[crtc].last_wait); 172 seq_printf(m, "CRTC %d in modeset: %d\n", 173 crtc, dev->vblank[crtc].inmodeset); 174 } 175 mutex_unlock(&dev->struct_mutex); 176 return 0; 177} 178 179/** 180 * Called when "/proc/dri/.../clients" is read. 181 * 182 */ 183int drm_clients_info(struct seq_file *m, void *data) 184{ 185 struct drm_info_node *node = (struct drm_info_node *) m->private; 186 struct drm_device *dev = node->minor->dev; 187 struct drm_file *priv; 188 189 seq_printf(m, 190 "%20s %5s %3s master a %5s %10s\n", 191 "command", 192 "pid", 193 "dev", 194 "uid", 195 "magic"); 196 197 /* dev->filelist is sorted youngest first, but we want to present 198 * oldest first (i.e. kernel, servers, clients), so walk backwardss. 199 */ 200 mutex_lock(&dev->struct_mutex); 201 list_for_each_entry_reverse(priv, &dev->filelist, lhead) { 202 struct task_struct *task; 203 204 rcu_read_lock(); /* locks pid_task()->comm */ 205 task = pid_task(priv->pid, PIDTYPE_PID); 206 seq_printf(m, "%20s %5d %3d %c %c %5d %10u\n", 207 task ? task->comm : "<unknown>", 208 pid_vnr(priv->pid), 209 priv->minor->index, 210 priv->is_master ? 'y' : 'n', 211 priv->authenticated ? 'y' : 'n', 212 from_kuid_munged(seq_user_ns(m), priv->uid), 213 priv->magic); 214 rcu_read_unlock(); 215 } 216 mutex_unlock(&dev->struct_mutex); 217 return 0; 218} 219 220 221static int drm_gem_one_name_info(int id, void *ptr, void *data) 222{ 223 struct drm_gem_object *obj = ptr; 224 struct seq_file *m = data; 225 226 seq_printf(m, "%6d %8zd %7d %8d\n", 227 obj->name, obj->size, 228 obj->handle_count, 229 atomic_read(&obj->refcount.refcount)); 230 return 0; 231} 232 233int drm_gem_name_info(struct seq_file *m, void *data) 234{ 235 struct drm_info_node *node = (struct drm_info_node *) m->private; 236 struct drm_device *dev = node->minor->dev; 237 238 seq_printf(m, " name size handles refcount\n"); 239 240 mutex_lock(&dev->object_name_lock); 241 idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m); 242 mutex_unlock(&dev->object_name_lock); 243 244 return 0; 245} 246