1// SPDX-License-Identifier: MIT
  2/*
  3 * Copyright © 2022 Intel Corporation
  4 */
  5
  6#include "xe_debugfs.h"
  7
  8#include <linux/string_helpers.h>
  9
 10#include <drm/drm_debugfs.h>
 11
 12#include "xe_bo.h"
 13#include "xe_device.h"
 14#include "xe_gt_debugfs.h"
 15#include "xe_step.h"
 16
 17#ifdef CONFIG_DRM_XE_DEBUG
 18#include "xe_bo_evict.h"
 19#include "xe_migrate.h"
 20#include "xe_vm.h"
 21#endif
 22
 23#ifdef CONFIG_FAULT_INJECTION
 24#include <linux/fault-inject.h> /* XXX: fault-inject.h is broken */
 25DECLARE_FAULT_ATTR(gt_reset_failure);
 26#endif
 27
 28static struct xe_device *node_to_xe(struct drm_info_node *node)
 29{
 30	return to_xe_device(node->minor->dev);
 31}
 32
 33static int info(struct seq_file *m, void *data)
 34{
 35	struct xe_device *xe = node_to_xe(m->private);
 36	struct drm_printer p = drm_seq_file_printer(m);
 37	struct xe_gt *gt;
 38	u8 id;
 39
 40	drm_printf(&p, "graphics_verx100 %d\n", xe->info.graphics_verx100);
 41	drm_printf(&p, "media_verx100 %d\n", xe->info.media_verx100);
 42	drm_printf(&p, "stepping G:%s M:%s D:%s B:%s\n",
 43		   xe_step_name(xe->info.step.graphics),
 44		   xe_step_name(xe->info.step.media),
 45		   xe_step_name(xe->info.step.display),
 46		   xe_step_name(xe->info.step.basedie));
 47	drm_printf(&p, "is_dgfx %s\n", str_yes_no(xe->info.is_dgfx));
 48	drm_printf(&p, "platform %d\n", xe->info.platform);
 49	drm_printf(&p, "subplatform %d\n",
 50		   xe->info.subplatform > XE_SUBPLATFORM_NONE ? xe->info.subplatform : 0);
 51	drm_printf(&p, "devid 0x%x\n", xe->info.devid);
 52	drm_printf(&p, "revid %d\n", xe->info.revid);
 53	drm_printf(&p, "tile_count %d\n", xe->info.tile_count);
 54	drm_printf(&p, "vm_max_level %d\n", xe->info.vm_max_level);
 55	drm_printf(&p, "force_execlist %s\n", str_yes_no(xe->info.force_execlist));
 56	drm_printf(&p, "has_flat_ccs %s\n", str_yes_no(xe->info.has_flat_ccs));
 57	drm_printf(&p, "has_usm %s\n", str_yes_no(xe->info.has_usm));
 58	drm_printf(&p, "skip_guc_pc %s\n", str_yes_no(xe->info.skip_guc_pc));
 59	for_each_gt(gt, xe, id) {
 60		drm_printf(&p, "gt%d force wake %d\n", id,
 61			   xe_force_wake_ref(gt_to_fw(gt), XE_FW_GT));
 62		drm_printf(&p, "gt%d engine_mask 0x%llx\n", id,
 63			   gt->info.engine_mask);
 64	}
 65
 66	return 0;
 67}
 68
 69static const struct drm_info_list debugfs_list[] = {
 70	{"info", info, 0},
 71};
 72
 73static int forcewake_open(struct inode *inode, struct file *file)
 74{
 75	struct xe_device *xe = inode->i_private;
 76	struct xe_gt *gt;
 77	u8 id;
 78
 79	xe_device_mem_access_get(xe);
 80
 81	for_each_gt(gt, xe, id)
 82		XE_WARN_ON(xe_force_wake_get(gt_to_fw(gt), XE_FORCEWAKE_ALL));
 83
 84	return 0;
 85}
 86
 87static int forcewake_release(struct inode *inode, struct file *file)
 88{
 89	struct xe_device *xe = inode->i_private;
 90	struct xe_gt *gt;
 91	u8 id;
 92
 93	for_each_gt(gt, xe, id)
 94		XE_WARN_ON(xe_force_wake_put(gt_to_fw(gt), XE_FORCEWAKE_ALL));
 95
 96	xe_device_mem_access_put(xe);
 97
 98	return 0;
 99}
100
101static const struct file_operations forcewake_all_fops = {
102	.owner = THIS_MODULE,
103	.open = forcewake_open,
104	.release = forcewake_release,
105};
106
107void xe_debugfs_register(struct xe_device *xe)
108{
109	struct ttm_device *bdev = &xe->ttm;
110	struct drm_minor *minor = xe->drm.primary;
111	struct dentry *root = minor->debugfs_root;
112	struct ttm_resource_manager *man;
113	struct xe_gt *gt;
114	u32 mem_type;
115	u8 id;
116
117	drm_debugfs_create_files(debugfs_list,
118				 ARRAY_SIZE(debugfs_list),
119				 root, minor);
120
121	debugfs_create_file("forcewake_all", 0400, root, xe,
122			    &forcewake_all_fops);
123
124	for (mem_type = XE_PL_VRAM0; mem_type <= XE_PL_VRAM1; ++mem_type) {
125		man = ttm_manager_type(bdev, mem_type);
126
127		if (man) {
128			char name[16];
129
130			sprintf(name, "vram%d_mm", mem_type - XE_PL_VRAM0);
131			ttm_resource_manager_create_debugfs(man, root, name);
132		}
133	}
134
135	man = ttm_manager_type(bdev, XE_PL_TT);
136	ttm_resource_manager_create_debugfs(man, root, "gtt_mm");
137
138	man = ttm_manager_type(bdev, XE_PL_STOLEN);
139	if (man)
140		ttm_resource_manager_create_debugfs(man, root, "stolen_mm");
141
142	for_each_gt(gt, xe, id)
143		xe_gt_debugfs_register(gt);
144
145#ifdef CONFIG_FAULT_INJECTION
146	fault_create_debugfs_attr("fail_gt_reset", root, &gt_reset_failure);
147#endif
148
149}