cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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qxl_debugfs.c (3818B)

      1/*
      2 * Copyright (C) 2009 Red Hat <bskeggs@redhat.com>
      3 *
      4 * Permission is hereby granted, free of charge, to any person obtaining
      5 * a copy of this software and associated documentation files (the
      6 * "Software"), to deal in the Software without restriction, including
      7 * without limitation the rights to use, copy, modify, merge, publish,
      8 * distribute, sublicense, and/or sell copies of the Software, and to
      9 * permit persons to whom the Software is furnished to do so, subject to
     10 * the following conditions:
     11 *
     12 * The above copyright notice and this permission notice (including the
     13 * next paragraph) shall be included in all copies or substantial
     14 * portions of the Software.
     15 *
     16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
     19 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
     20 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     21 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     22 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     23 *
     24 */
     25
     26/*
     27 * Authors:
     28 *  Alon Levy <alevy@redhat.com>
     29 */
     30
     31#include <drm/drm_debugfs.h>
     32#include <drm/drm_file.h>
     33
     34#include "qxl_drv.h"
     35#include "qxl_object.h"
     36
     37#if defined(CONFIG_DEBUG_FS)
     38static int
     39qxl_debugfs_irq_received(struct seq_file *m, void *data)
     40{
     41	struct drm_info_node *node = (struct drm_info_node *) m->private;
     42	struct qxl_device *qdev = to_qxl(node->minor->dev);
     43
     44	seq_printf(m, "%d\n", atomic_read(&qdev->irq_received));
     45	seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_display));
     46	seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_cursor));
     47	seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_io_cmd));
     48	seq_printf(m, "%d\n", qdev->irq_received_error);
     49	return 0;
     50}
     51
     52static int
     53qxl_debugfs_buffers_info(struct seq_file *m, void *data)
     54{
     55	struct drm_info_node *node = (struct drm_info_node *) m->private;
     56	struct qxl_device *qdev = to_qxl(node->minor->dev);
     57	struct qxl_bo *bo;
     58
     59	list_for_each_entry(bo, &qdev->gem.objects, list) {
     60		struct dma_resv_iter cursor;
     61		struct dma_fence *fence;
     62		int rel = 0;
     63
     64		dma_resv_iter_begin(&cursor, bo->tbo.base.resv,
     65				    DMA_RESV_USAGE_BOOKKEEP);
     66		dma_resv_for_each_fence_unlocked(&cursor, fence) {
     67			if (dma_resv_iter_is_restarted(&cursor))
     68				rel = 0;
     69			++rel;
     70		}
     71
     72		seq_printf(m, "size %ld, pc %d, num releases %d\n",
     73			   (unsigned long)bo->tbo.base.size,
     74			   bo->tbo.pin_count, rel);
     75	}
     76	return 0;
     77}
     78
     79static struct drm_info_list qxl_debugfs_list[] = {
     80	{ "irq_received", qxl_debugfs_irq_received, 0, NULL },
     81	{ "qxl_buffers", qxl_debugfs_buffers_info, 0, NULL },
     82};
     83#define QXL_DEBUGFS_ENTRIES ARRAY_SIZE(qxl_debugfs_list)
     84#endif
     85
     86void
     87qxl_debugfs_init(struct drm_minor *minor)
     88{
     89#if defined(CONFIG_DEBUG_FS)
     90	struct qxl_device *dev = to_qxl(minor->dev);
     91
     92	drm_debugfs_create_files(qxl_debugfs_list, QXL_DEBUGFS_ENTRIES,
     93				 minor->debugfs_root, minor);
     94
     95	qxl_ttm_debugfs_init(dev);
     96#endif
     97}
     98
     99void qxl_debugfs_add_files(struct qxl_device *qdev,
    100			   struct drm_info_list *files,
    101			   unsigned int nfiles)
    102{
    103	unsigned int i;
    104
    105	for (i = 0; i < qdev->debugfs_count; i++) {
    106		if (qdev->debugfs[i].files == files) {
    107			/* Already registered */
    108			return;
    109		}
    110	}
    111
    112	i = qdev->debugfs_count + 1;
    113	if (i > QXL_DEBUGFS_MAX_COMPONENTS) {
    114		DRM_ERROR("Reached maximum number of debugfs components.\n");
    115		DRM_ERROR("Report so we increase QXL_DEBUGFS_MAX_COMPONENTS.\n");
    116		return;
    117	}
    118	qdev->debugfs[qdev->debugfs_count].files = files;
    119	qdev->debugfs[qdev->debugfs_count].num_files = nfiles;
    120	qdev->debugfs_count = i;
    121#if defined(CONFIG_DEBUG_FS)
    122	drm_debugfs_create_files(files, nfiles,
    123				 qdev->ddev.primary->debugfs_root,
    124				 qdev->ddev.primary);
    125#endif
    126}