drm_info.c

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/*
 * Created: Sun Dec 21 13:09:50 2008 by [email protected]
 *
 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * Copyright 2008 Ben Gamari <[email protected]>
 * 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>

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;
    const char *bus_name;
    if (!master)
        return 0;

    bus_name = dev->driver->bus->get_name(dev);
    if (master->unique) {
        seq_printf(m, "%s %s %s\n",
               bus_name,
               dev_name(dev->dev), master->unique);
    } else {
        seq_printf(m, "%s %s\n",
               bus_name, dev_name(dev->dev));
    }
    return 0;
}

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;
}

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,
                   atomic_read(&dma->bufs[i].freelist.count),
                   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;
}

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_refcount[crtc]));
        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->last_vblank_wait[crtc]);
        seq_printf(m, "CRTC %d in modeset: %d\n",
               crtc, dev->vblank_inmodeset[crtc]);
    }
    mutex_unlock(&dev->struct_mutex);
    return 0;
}

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;

    mutex_lock(&dev->struct_mutex);
    seq_printf(m, "a dev    pid    uid  magic     ioctls\n\n");
    list_for_each_entry(priv, &dev->filelist, lhead) {
        seq_printf(m, "%c %3d %5d %5d %10u %10lu\n",
               priv->authenticated ? 'y' : 'n',
               priv->minor->index,
               pid_vnr(priv->pid),
               from_kuid_munged(seq_user_ns(m), priv->uid),
               priv->magic, priv->ioctl_count);
    }
    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,
           atomic_read(&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");
    idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
    return 0;
}

#if DRM_DEBUG_CODE

int drm_vma_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_vma_entry *pt;
    struct vm_area_struct *vma;
#if defined(__i386__)
    unsigned int pgprot;
#endif

    mutex_lock(&dev->struct_mutex);
    seq_printf(m, "vma use count: %d, high_memory = %pK, 0x%pK\n",
           atomic_read(&dev->vma_count),
           high_memory, (void *)(unsigned long)virt_to_phys(high_memory));

    list_for_each_entry(pt, &dev->vmalist, head) {
        vma = pt->vma;
        if (!vma)
            continue;
        seq_printf(m,
               "\n%5d 0x%pK-0x%pK %c%c%c%c%c%c 0x%08lx000",
               pt->pid,
               (void *)vma->vm_start, (void *)vma->vm_end,
               vma->vm_flags & VM_READ ? 'r' : '-',
               vma->vm_flags & VM_WRITE ? 'w' : '-',
               vma->vm_flags & VM_EXEC ? 'x' : '-',
               vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
               vma->vm_flags & VM_LOCKED ? 'l' : '-',
               vma->vm_flags & VM_IO ? 'i' : '-',
               vma->vm_pgoff);

#if defined(__i386__)
        pgprot = pgprot_val(vma->vm_page_prot);
        seq_printf(m, " %c%c%c%c%c%c%c%c%c",
               pgprot & _PAGE_PRESENT ? 'p' : '-',
               pgprot & _PAGE_RW ? 'w' : 'r',
               pgprot & _PAGE_USER ? 'u' : 's',
               pgprot & _PAGE_PWT ? 't' : 'b',
               pgprot & _PAGE_PCD ? 'u' : 'c',
               pgprot & _PAGE_ACCESSED ? 'a' : '-',
               pgprot & _PAGE_DIRTY ? 'd' : '-',
               pgprot & _PAGE_PSE ? 'm' : 'k',
               pgprot & _PAGE_GLOBAL ? 'g' : 'l');
#endif
        seq_printf(m, "\n");
    }
    mutex_unlock(&dev->struct_mutex);
    return 0;
}

#endif