1 // SPDX-License-Identifier: MIT
2 /*
3 * Copyright © 2022 Intel Corporation
4 */
5
6 #include "xe_gt_debugfs.h"
7
8 #include <linux/debugfs.h>
9
10 #include <drm/drm_debugfs.h>
11 #include <drm/drm_managed.h>
12
13 #include "xe_device.h"
14 #include "xe_force_wake.h"
15 #include "xe_ggtt.h"
16 #include "xe_gt.h"
17 #include "xe_gt_mcr.h"
18 #include "xe_gt_idle.h"
19 #include "xe_gt_sriov_pf_debugfs.h"
20 #include "xe_gt_sriov_vf_debugfs.h"
21 #include "xe_gt_stats.h"
22 #include "xe_gt_topology.h"
23 #include "xe_guc_hwconfig.h"
24 #include "xe_hw_engine.h"
25 #include "xe_lrc.h"
26 #include "xe_macros.h"
27 #include "xe_mocs.h"
28 #include "xe_pat.h"
29 #include "xe_pm.h"
30 #include "xe_reg_sr.h"
31 #include "xe_reg_whitelist.h"
32 #include "xe_sriov.h"
33 #include "xe_uc_debugfs.h"
34 #include "xe_wa.h"
35
36 /**
37 * xe_gt_debugfs_simple_show - A show callback for struct drm_info_list
38 * @m: the &seq_file
39 * @data: data used by the drm debugfs helpers
40 *
41 * This callback can be used in struct drm_info_list to describe debugfs
42 * files that are &xe_gt specific.
43 *
44 * It is assumed that those debugfs files will be created on directory entry
45 * which struct dentry d_inode->i_private points to &xe_gt.
46 *
47 * This function assumes that &m->private will be set to the &struct
48 * drm_info_node corresponding to the instance of the info on a given &struct
49 * drm_minor (see struct drm_info_list.show for details).
50 *
51 * This function also assumes that struct drm_info_list.data will point to the
52 * function code that will actually print a file content::
53 *
54 * int (*print)(struct xe_gt *, struct drm_printer *)
55 *
56 * Example::
57 *
58 * int foo(struct xe_gt *gt, struct drm_printer *p)
59 * {
60 * drm_printf(p, "GT%u\n", gt->info.id);
61 * return 0;
62 * }
63 *
64 * static const struct drm_info_list bar[] = {
65 * { name = "foo", .show = xe_gt_debugfs_simple_show, .data = foo },
66 * };
67 *
68 * dir = debugfs_create_dir("gt", parent);
69 * dir->d_inode->i_private = gt;
70 * drm_debugfs_create_files(bar, ARRAY_SIZE(bar), dir, minor);
71 *
72 * Return: 0 on success or a negative error code on failure.
73 */
xe_gt_debugfs_simple_show(struct seq_file * m,void * data)74 int xe_gt_debugfs_simple_show(struct seq_file *m, void *data)
75 {
76 struct drm_printer p = drm_seq_file_printer(m);
77 struct drm_info_node *node = m->private;
78 struct dentry *parent = node->dent->d_parent;
79 struct xe_gt *gt = parent->d_inode->i_private;
80 int (*print)(struct xe_gt *, struct drm_printer *) = node->info_ent->data;
81
82 if (WARN_ON(!print))
83 return -EINVAL;
84
85 return print(gt, &p);
86 }
87
hw_engines(struct xe_gt * gt,struct drm_printer * p)88 static int hw_engines(struct xe_gt *gt, struct drm_printer *p)
89 {
90 struct xe_device *xe = gt_to_xe(gt);
91 struct xe_hw_engine *hwe;
92 enum xe_hw_engine_id id;
93 unsigned int fw_ref;
94
95 xe_pm_runtime_get(xe);
96 fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FORCEWAKE_ALL);
97 if (!xe_force_wake_ref_has_domain(fw_ref, XE_FORCEWAKE_ALL)) {
98 xe_pm_runtime_put(xe);
99 xe_force_wake_put(gt_to_fw(gt), fw_ref);
100 return -ETIMEDOUT;
101 }
102
103 for_each_hw_engine(hwe, gt, id)
104 xe_hw_engine_print(hwe, p);
105
106 xe_force_wake_put(gt_to_fw(gt), fw_ref);
107 xe_pm_runtime_put(xe);
108
109 return 0;
110 }
111
powergate_info(struct xe_gt * gt,struct drm_printer * p)112 static int powergate_info(struct xe_gt *gt, struct drm_printer *p)
113 {
114 int ret;
115
116 xe_pm_runtime_get(gt_to_xe(gt));
117 ret = xe_gt_idle_pg_print(gt, p);
118 xe_pm_runtime_put(gt_to_xe(gt));
119
120 return ret;
121 }
122
force_reset(struct xe_gt * gt,struct drm_printer * p)123 static int force_reset(struct xe_gt *gt, struct drm_printer *p)
124 {
125 xe_pm_runtime_get(gt_to_xe(gt));
126 xe_gt_reset_async(gt);
127 xe_pm_runtime_put(gt_to_xe(gt));
128
129 return 0;
130 }
131
force_reset_sync(struct xe_gt * gt,struct drm_printer * p)132 static int force_reset_sync(struct xe_gt *gt, struct drm_printer *p)
133 {
134 xe_pm_runtime_get(gt_to_xe(gt));
135 xe_gt_reset(gt);
136 xe_pm_runtime_put(gt_to_xe(gt));
137
138 return 0;
139 }
140
sa_info(struct xe_gt * gt,struct drm_printer * p)141 static int sa_info(struct xe_gt *gt, struct drm_printer *p)
142 {
143 struct xe_tile *tile = gt_to_tile(gt);
144
145 xe_pm_runtime_get(gt_to_xe(gt));
146 drm_suballoc_dump_debug_info(&tile->mem.kernel_bb_pool->base, p,
147 tile->mem.kernel_bb_pool->gpu_addr);
148 xe_pm_runtime_put(gt_to_xe(gt));
149
150 return 0;
151 }
152
topology(struct xe_gt * gt,struct drm_printer * p)153 static int topology(struct xe_gt *gt, struct drm_printer *p)
154 {
155 xe_pm_runtime_get(gt_to_xe(gt));
156 xe_gt_topology_dump(gt, p);
157 xe_pm_runtime_put(gt_to_xe(gt));
158
159 return 0;
160 }
161
steering(struct xe_gt * gt,struct drm_printer * p)162 static int steering(struct xe_gt *gt, struct drm_printer *p)
163 {
164 xe_pm_runtime_get(gt_to_xe(gt));
165 xe_gt_mcr_steering_dump(gt, p);
166 xe_pm_runtime_put(gt_to_xe(gt));
167
168 return 0;
169 }
170
ggtt(struct xe_gt * gt,struct drm_printer * p)171 static int ggtt(struct xe_gt *gt, struct drm_printer *p)
172 {
173 int ret;
174
175 xe_pm_runtime_get(gt_to_xe(gt));
176 ret = xe_ggtt_dump(gt_to_tile(gt)->mem.ggtt, p);
177 xe_pm_runtime_put(gt_to_xe(gt));
178
179 return ret;
180 }
181
register_save_restore(struct xe_gt * gt,struct drm_printer * p)182 static int register_save_restore(struct xe_gt *gt, struct drm_printer *p)
183 {
184 struct xe_hw_engine *hwe;
185 enum xe_hw_engine_id id;
186
187 xe_pm_runtime_get(gt_to_xe(gt));
188
189 xe_reg_sr_dump(>->reg_sr, p);
190 drm_printf(p, "\n");
191
192 drm_printf(p, "Engine\n");
193 for_each_hw_engine(hwe, gt, id)
194 xe_reg_sr_dump(&hwe->reg_sr, p);
195 drm_printf(p, "\n");
196
197 drm_printf(p, "LRC\n");
198 for_each_hw_engine(hwe, gt, id)
199 xe_reg_sr_dump(&hwe->reg_lrc, p);
200 drm_printf(p, "\n");
201
202 drm_printf(p, "Whitelist\n");
203 for_each_hw_engine(hwe, gt, id)
204 xe_reg_whitelist_dump(&hwe->reg_whitelist, p);
205
206 xe_pm_runtime_put(gt_to_xe(gt));
207
208 return 0;
209 }
210
workarounds(struct xe_gt * gt,struct drm_printer * p)211 static int workarounds(struct xe_gt *gt, struct drm_printer *p)
212 {
213 xe_pm_runtime_get(gt_to_xe(gt));
214 xe_wa_dump(gt, p);
215 xe_pm_runtime_put(gt_to_xe(gt));
216
217 return 0;
218 }
219
pat(struct xe_gt * gt,struct drm_printer * p)220 static int pat(struct xe_gt *gt, struct drm_printer *p)
221 {
222 xe_pm_runtime_get(gt_to_xe(gt));
223 xe_pat_dump(gt, p);
224 xe_pm_runtime_put(gt_to_xe(gt));
225
226 return 0;
227 }
228
mocs(struct xe_gt * gt,struct drm_printer * p)229 static int mocs(struct xe_gt *gt, struct drm_printer *p)
230 {
231 xe_pm_runtime_get(gt_to_xe(gt));
232 xe_mocs_dump(gt, p);
233 xe_pm_runtime_put(gt_to_xe(gt));
234
235 return 0;
236 }
237
rcs_default_lrc(struct xe_gt * gt,struct drm_printer * p)238 static int rcs_default_lrc(struct xe_gt *gt, struct drm_printer *p)
239 {
240 xe_pm_runtime_get(gt_to_xe(gt));
241 xe_lrc_dump_default(p, gt, XE_ENGINE_CLASS_RENDER);
242 xe_pm_runtime_put(gt_to_xe(gt));
243
244 return 0;
245 }
246
ccs_default_lrc(struct xe_gt * gt,struct drm_printer * p)247 static int ccs_default_lrc(struct xe_gt *gt, struct drm_printer *p)
248 {
249 xe_pm_runtime_get(gt_to_xe(gt));
250 xe_lrc_dump_default(p, gt, XE_ENGINE_CLASS_COMPUTE);
251 xe_pm_runtime_put(gt_to_xe(gt));
252
253 return 0;
254 }
255
bcs_default_lrc(struct xe_gt * gt,struct drm_printer * p)256 static int bcs_default_lrc(struct xe_gt *gt, struct drm_printer *p)
257 {
258 xe_pm_runtime_get(gt_to_xe(gt));
259 xe_lrc_dump_default(p, gt, XE_ENGINE_CLASS_COPY);
260 xe_pm_runtime_put(gt_to_xe(gt));
261
262 return 0;
263 }
264
vcs_default_lrc(struct xe_gt * gt,struct drm_printer * p)265 static int vcs_default_lrc(struct xe_gt *gt, struct drm_printer *p)
266 {
267 xe_pm_runtime_get(gt_to_xe(gt));
268 xe_lrc_dump_default(p, gt, XE_ENGINE_CLASS_VIDEO_DECODE);
269 xe_pm_runtime_put(gt_to_xe(gt));
270
271 return 0;
272 }
273
vecs_default_lrc(struct xe_gt * gt,struct drm_printer * p)274 static int vecs_default_lrc(struct xe_gt *gt, struct drm_printer *p)
275 {
276 xe_pm_runtime_get(gt_to_xe(gt));
277 xe_lrc_dump_default(p, gt, XE_ENGINE_CLASS_VIDEO_ENHANCE);
278 xe_pm_runtime_put(gt_to_xe(gt));
279
280 return 0;
281 }
282
hwconfig(struct xe_gt * gt,struct drm_printer * p)283 static int hwconfig(struct xe_gt *gt, struct drm_printer *p)
284 {
285 xe_pm_runtime_get(gt_to_xe(gt));
286 xe_guc_hwconfig_dump(>->uc.guc, p);
287 xe_pm_runtime_put(gt_to_xe(gt));
288
289 return 0;
290 }
291
292 static const struct drm_info_list debugfs_list[] = {
293 {"hw_engines", .show = xe_gt_debugfs_simple_show, .data = hw_engines},
294 {"force_reset", .show = xe_gt_debugfs_simple_show, .data = force_reset},
295 {"force_reset_sync", .show = xe_gt_debugfs_simple_show, .data = force_reset_sync},
296 {"sa_info", .show = xe_gt_debugfs_simple_show, .data = sa_info},
297 {"topology", .show = xe_gt_debugfs_simple_show, .data = topology},
298 {"steering", .show = xe_gt_debugfs_simple_show, .data = steering},
299 {"ggtt", .show = xe_gt_debugfs_simple_show, .data = ggtt},
300 {"powergate_info", .show = xe_gt_debugfs_simple_show, .data = powergate_info},
301 {"register-save-restore", .show = xe_gt_debugfs_simple_show, .data = register_save_restore},
302 {"workarounds", .show = xe_gt_debugfs_simple_show, .data = workarounds},
303 {"pat", .show = xe_gt_debugfs_simple_show, .data = pat},
304 {"mocs", .show = xe_gt_debugfs_simple_show, .data = mocs},
305 {"default_lrc_rcs", .show = xe_gt_debugfs_simple_show, .data = rcs_default_lrc},
306 {"default_lrc_ccs", .show = xe_gt_debugfs_simple_show, .data = ccs_default_lrc},
307 {"default_lrc_bcs", .show = xe_gt_debugfs_simple_show, .data = bcs_default_lrc},
308 {"default_lrc_vcs", .show = xe_gt_debugfs_simple_show, .data = vcs_default_lrc},
309 {"default_lrc_vecs", .show = xe_gt_debugfs_simple_show, .data = vecs_default_lrc},
310 {"stats", .show = xe_gt_debugfs_simple_show, .data = xe_gt_stats_print_info},
311 {"hwconfig", .show = xe_gt_debugfs_simple_show, .data = hwconfig},
312 };
313
xe_gt_debugfs_register(struct xe_gt * gt)314 void xe_gt_debugfs_register(struct xe_gt *gt)
315 {
316 struct xe_device *xe = gt_to_xe(gt);
317 struct drm_minor *minor = gt_to_xe(gt)->drm.primary;
318 struct dentry *root;
319 char name[8];
320
321 xe_gt_assert(gt, minor->debugfs_root);
322
323 snprintf(name, sizeof(name), "gt%d", gt->info.id);
324 root = debugfs_create_dir(name, minor->debugfs_root);
325 if (IS_ERR(root)) {
326 drm_warn(&xe->drm, "Create GT directory failed");
327 return;
328 }
329
330 /*
331 * Store the xe_gt pointer as private data of the gt/ directory node
332 * so other GT specific attributes under that directory may refer to
333 * it by looking at its parent node private data.
334 */
335 root->d_inode->i_private = gt;
336
337 drm_debugfs_create_files(debugfs_list,
338 ARRAY_SIZE(debugfs_list),
339 root, minor);
340
341 xe_uc_debugfs_register(>->uc, root);
342
343 if (IS_SRIOV_PF(xe))
344 xe_gt_sriov_pf_debugfs_register(gt, root);
345 else if (IS_SRIOV_VF(xe))
346 xe_gt_sriov_vf_debugfs_register(gt, root);
347 }
348