path: root/drivers/gpu/drm/i915/i915_debugfs.c

/*
 * Copyright © 2008 Intel Corporation
 *
 * 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
 * THE AUTHORS OR COPYRIGHT HOLDERS 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.
 *
 * Authors:
 *    Eric Anholt <eric@anholt.net>
 *    Keith Packard <keithp@keithp.com>
 *
 */

#include <linux/sched/mm.h>
#include <linux/sort.h>

#include <drm/drm_debugfs.h>

#include "gem/i915_gem_context.h"
#include "gt/intel_gt_buffer_pool.h"
#include "gt/intel_gt_clock_utils.h"
#include "gt/intel_gt.h"
#include "gt/intel_gt_pm.h"
#include "gt/intel_gt_requests.h"
#include "gt/intel_reset.h"
#include "gt/intel_rc6.h"
#include "gt/intel_rps.h"
#include "gt/intel_sseu_debugfs.h"

#include "i915_debugfs.h"
#include "i915_debugfs_params.h"
#include "i915_irq.h"
#include "i915_scheduler.h"
#include "i915_trace.h"
#include "intel_pm.h"
#include "intel_sideband.h"

static inline struct drm_i915_private *node_to_i915(struct drm_info_node *node)
{
	return to_i915(node->minor->dev);
}

static int i915_capabilities(struct seq_file *m, void *data)
{
	struct drm_i915_private *i915 = node_to_i915(m->private);
	struct drm_printer p = drm_seq_file_printer(m);

	seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(i915));

	intel_device_info_print_static(INTEL_INFO(i915), &p);
	intel_device_info_print_runtime(RUNTIME_INFO(i915), &p);
	intel_gt_info_print(&i915->gt.info, &p);
	intel_driver_caps_print(&i915->caps, &p);

	kernel_param_lock(THIS_MODULE);
	i915_params_dump(&i915->params, &p);
	kernel_param_unlock(THIS_MODULE);

	return 0;
}

static char get_tiling_flag(struct drm_i915_gem_object *obj)
{
	switch (i915_gem_object_get_tiling(obj)) {
	default:
	case I915_TILING_NONE: return ' ';
	case I915_TILING_X: return 'X';
	case I915_TILING_Y: return 'Y';
	}
}

static char get_global_flag(struct drm_i915_gem_object *obj)
{
	return READ_ONCE(obj->userfault_count) ? 'g' : ' ';
}

static char get_pin_mapped_flag(struct drm_i915_gem_object *obj)
{
	return obj->mm.mapping ? 'M' : ' ';
}

static const char *
stringify_page_sizes(unsigned int page_sizes, char *buf, size_t len)
{
	size_t x = 0;

	switch (page_sizes) {
	case 0:
		return "";
	case I915_GTT_PAGE_SIZE_4K:
		return "4K";
	case I915_GTT_PAGE_SIZE_64K:
		return "64K";
	case I915_GTT_PAGE_SIZE_2M:
		return "2M";
	default:
		if (!buf)
			return "M";

		if (page_sizes & I915_GTT_PAGE_SIZE_2M)
			x += snprintf(buf + x, len - x, "2M, ");
		if (page_sizes & I915_GTT_PAGE_SIZE_64K)
			x += snprintf(buf + x, len - x, "64K, ");
		if (page_sizes & I915_GTT_PAGE_SIZE_4K)
			x += snprintf(buf + x, len - x, "4K, ");
		buf[x-2] = '\0';

		return buf;
	}
}

void
i915_debugfs_describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
{
	struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
	struct intel_engine_cs *engine;
	struct i915_vma *vma;
	int pin_count = 0;

	seq_printf(m, "%pK: %c%c%c %8zdKiB %02x %02x %s%s%s",
		   &obj->base,
		   get_tiling_flag(obj),
		   get_global_flag(obj),
		   get_pin_mapped_flag(obj),
		   obj->base.size / 1024,
		   obj->read_domains,
		   obj->write_domain,
		   i915_cache_level_str(dev_priv, obj->cache_level),
		   obj->mm.dirty ? " dirty" : "",
		   obj->mm.madv == I915_MADV_DONTNEED ? " purgeable" : "");
	if (obj->base.name)
		seq_printf(m, " (name: %d)", obj->base.name);

	spin_lock(&obj->vma.lock);
	list_for_each_entry(vma, &obj->vma.list, obj_link) {
		if (!drm_mm_node_allocated(&vma->node))
			continue;

		spin_unlock(&obj->vma.lock);

		if (i915_vma_is_pinned(vma))
			pin_count++;

		seq_printf(m, " (%sgtt offset: %08llx, size: %08llx, pages: %s",
			   i915_vma_is_ggtt(vma) ? "g" : "pp",
			   vma->node.start, vma->node.size,
			   stringify_page_sizes(vma->page_sizes.gtt, NULL, 0));
		if (i915_vma_is_ggtt(vma)) {
			switch (vma->ggtt_view.type) {
			case I915_GGTT_VIEW_NORMAL:
				seq_puts(m, ", normal");
				break;

			case I915_GGTT_VIEW_PARTIAL:
				seq_printf(m, ", partial [%08llx+%x]",
					   vma-&