| /** |
| * \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_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/.../vblank" is read. |
| */ |
| int drm_vblank_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; |
| int crtc; |
| |
| mutex_lock(&dev->struct_mutex); |
| for (crtc = 0; crtc < dev->num_crtcs; crtc++) { |
| seq_printf(m, "CRTC %d enable: %d\n", |
| crtc, atomic_read(&dev->vblank[crtc].refcount)); |
| seq_printf(m, "CRTC %d counter: %d\n", |
| crtc, drm_vblank_count(dev, crtc)); |
| seq_printf(m, "CRTC %d last wait: %d\n", |
| crtc, dev->vblank[crtc].last_wait); |
| seq_printf(m, "CRTC %d in modeset: %d\n", |
| crtc, dev->vblank[crtc].inmodeset); |
| } |
| 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; |
| } |