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- /**
- * \file drm_info.c
- * DRM info file implementations
- *
- * \author Ben Gamari <bgamari@gmail.com>
- */
- /*
- * Created: Sun Dec 21 13:09:50 2008 by bgamari@gmail.com
- *
- * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
- * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
- * Copyright 2008 Ben Gamari <bgamari@gmail.com>
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- */
- #include <linux/seq_file.h>
- #include <drm/drmP.h>
- #include <drm/drm_gem.h>
- #include "drm_internal.h"
- #include "drm_legacy.h"
- /**
- * Called when "/proc/dri/.../name" is read.
- *
- * Prints the device name together with the bus id if available.
- */
- int drm_name_info(struct seq_file *m, void *data)
- {
- struct drm_info_node *node = (struct drm_info_node *) m->private;
- struct drm_minor *minor = node->minor;
- struct drm_device *dev = minor->dev;
- struct drm_master *master = minor->master;
- if (!master)
- return 0;
- if (master->unique) {
- seq_printf(m, "%s %s %s\n",
- dev->driver->name,
- dev_name(dev->dev), master->unique);
- } else {
- seq_printf(m, "%s %s\n",
- dev->driver->name, dev_name(dev->dev));
- }
- return 0;
- }
- /**
- * Called when "/proc/dri/.../vm" is read.
- *
- * Prints information about all mappings in drm_device::maplist.
- */
- int drm_vm_info(struct seq_file *m, void *data)
- {
- struct drm_info_node *node = (struct drm_info_node *) m->private;
- struct drm_device *dev = node->minor->dev;
- struct drm_local_map *map;
- struct drm_map_list *r_list;
- /* Hardcoded from _DRM_FRAME_BUFFER,
- _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
- _DRM_SCATTER_GATHER and _DRM_CONSISTENT */
- const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
- const char *type;
- int i;
- mutex_lock(&dev->struct_mutex);
- seq_printf(m, "slot offset size type flags address mtrr\n\n");
- i = 0;
- list_for_each_entry(r_list, &dev->maplist, head) {
- map = r_list->map;
- if (!map)
- continue;
- if (map->type < 0 || map->type > 5)
- type = "??";
- else
- type = types[map->type];
- seq_printf(m, "%4d 0x%016llx 0x%08lx %4.4s 0x%02x 0x%08lx ",
- i,
- (unsigned long long)map->offset,
- map->size, type, map->flags,
- (unsigned long) r_list->user_token);
- if (map->mtrr < 0)
- seq_printf(m, "none\n");
- else
- seq_printf(m, "%4d\n", map->mtrr);
- i++;
- }
- mutex_unlock(&dev->struct_mutex);
- return 0;
- }
- /**
- * Called when "/proc/dri/.../bufs" is read.
- */
- int drm_bufs_info(struct seq_file *m, void *data)
- {
- struct drm_info_node *node = (struct drm_info_node *) m->private;
- struct drm_device *dev = node->minor->dev;
- struct drm_device_dma *dma;
- int i, seg_pages;
- mutex_lock(&dev->struct_mutex);
- dma = dev->dma;
- if (!dma) {
- mutex_unlock(&dev->struct_mutex);
- return 0;
- }
- seq_printf(m, " o size count free segs pages kB\n\n");
- for (i = 0; i <= DRM_MAX_ORDER; i++) {
- if (dma->bufs[i].buf_count) {
- seg_pages = dma->bufs[i].seg_count * (1 << dma->bufs[i].page_order);
- seq_printf(m, "%2d %8d %5d %5d %5d %5d %5ld\n",
- i,
- dma->bufs[i].buf_size,
- dma->bufs[i].buf_count,
- 0,
- dma->bufs[i].seg_count,
- seg_pages,
- seg_pages * PAGE_SIZE / 1024);
- }
- }
- seq_printf(m, "\n");
- for (i = 0; i < dma->buf_count; i++) {
- if (i && !(i % 32))
- seq_printf(m, "\n");
- seq_printf(m, " %d", dma->buflist[i]->list);
- }
- seq_printf(m, "\n");
- mutex_unlock(&dev->struct_mutex);
- return 0;
- }
- /**
- * Called when "/proc/dri/.../clients" is read.
- *
- */
- int drm_clients_info(struct seq_file *m, void *data)
- {
- struct drm_info_node *node = (struct drm_info_node *) m->private;
- struct drm_device *dev = node->minor->dev;
- struct drm_file *priv;
- seq_printf(m,
- "%20s %5s %3s master a %5s %10s\n",
- "command",
- "pid",
- "dev",
- "uid",
- "magic");
- /* dev->filelist is sorted youngest first, but we want to present
- * oldest first (i.e. kernel, servers, clients), so walk backwardss.
- */
- mutex_lock(&dev->struct_mutex);
- list_for_each_entry_reverse(priv, &dev->filelist, lhead) {
- struct task_struct *task;
- rcu_read_lock(); /* locks pid_task()->comm */
- task = pid_task(priv->pid, PIDTYPE_PID);
- seq_printf(m, "%20s %5d %3d %c %c %5d %10u\n",
- task ? task->comm : "<unknown>",
- pid_vnr(priv->pid),
- priv->minor->index,
- priv->is_master ? 'y' : 'n',
- priv->authenticated ? 'y' : 'n',
- from_kuid_munged(seq_user_ns(m), priv->uid),
- priv->magic);
- rcu_read_unlock();
- }
- mutex_unlock(&dev->struct_mutex);
- return 0;
- }
- static int drm_gem_one_name_info(int id, void *ptr, void *data)
- {
- struct drm_gem_object *obj = ptr;
- struct seq_file *m = data;
- seq_printf(m, "%6d %8zd %7d %8d\n",
- obj->name, obj->size,
- obj->handle_count,
- atomic_read(&obj->refcount.refcount));
- return 0;
- }
- int drm_gem_name_info(struct seq_file *m, void *data)
- {
- struct drm_info_node *node = (struct drm_info_node *) m->private;
- struct drm_device *dev = node->minor->dev;
- seq_printf(m, " name size handles refcount\n");
- mutex_lock(&dev->object_name_lock);
- idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
- mutex_unlock(&dev->object_name_lock);
- return 0;
- }
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