tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 */
74int 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
88static 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
112static 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
123static 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
132static 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_async(gt);
136 xe_pm_runtime_put(gt_to_xe(gt));
137
138 flush_work(>->reset.worker);
139
140 return 0;
141}
142
143static int sa_info(struct xe_gt *gt, struct drm_printer *p)
144{
145 struct xe_tile *tile = gt_to_tile(gt);
146
147 xe_pm_runtime_get(gt_to_xe(gt));
148 drm_suballoc_dump_debug_info(&tile->mem.kernel_bb_pool->base, p,
149 tile->mem.kernel_bb_pool->gpu_addr);
150 xe_pm_runtime_put(gt_to_xe(gt));
151
152 return 0;
153}
154
155static int topology(struct xe_gt *gt, struct drm_printer *p)
156{
157 xe_pm_runtime_get(gt_to_xe(gt));
158 xe_gt_topology_dump(gt, p);
159 xe_pm_runtime_put(gt_to_xe(gt));
160
161 return 0;
162}
163
164static int steering(struct xe_gt *gt, struct drm_printer *p)
165{
166 xe_pm_runtime_get(gt_to_xe(gt));
167 xe_gt_mcr_steering_dump(gt, p);
168 xe_pm_runtime_put(gt_to_xe(gt));
169
170 return 0;
171}
172
173static int ggtt(struct xe_gt *gt, struct drm_printer *p)
174{
175 int ret;
176
177 xe_pm_runtime_get(gt_to_xe(gt));
178 ret = xe_ggtt_dump(gt_to_tile(gt)->mem.ggtt, p);
179 xe_pm_runtime_put(gt_to_xe(gt));
180
181 return ret;
182}
183
184static int register_save_restore(struct xe_gt *gt, struct drm_printer *p)
185{
186 struct xe_hw_engine *hwe;
187 enum xe_hw_engine_id id;
188
189 xe_pm_runtime_get(gt_to_xe(gt));
190
191 xe_reg_sr_dump(>->reg_sr, p);
192 drm_printf(p, "\n");
193
194 drm_printf(p, "Engine\n");
195 for_each_hw_engine(hwe, gt, id)
196 xe_reg_sr_dump(&hwe->reg_sr, p);
197 drm_printf(p, "\n");
198
199 drm_printf(p, "LRC\n");
200 for_each_hw_engine(hwe, gt, id)
201 xe_reg_sr_dump(&hwe->reg_lrc, p);
202 drm_printf(p, "\n");
203
204 drm_printf(p, "Whitelist\n");
205 for_each_hw_engine(hwe, gt, id)
206 xe_reg_whitelist_dump(&hwe->reg_whitelist, p);
207
208 xe_pm_runtime_put(gt_to_xe(gt));
209
210 return 0;
211}
212
213static int workarounds(struct xe_gt *gt, struct drm_printer *p)
214{
215 xe_pm_runtime_get(gt_to_xe(gt));
216 xe_wa_dump(gt, p);
217 xe_pm_runtime_put(gt_to_xe(gt));
218
219 return 0;
220}
221
222static int pat(struct xe_gt *gt, struct drm_printer *p)
223{
224 xe_pm_runtime_get(gt_to_xe(gt));
225 xe_pat_dump(gt, p);
226 xe_pm_runtime_put(gt_to_xe(gt));
227
228 return 0;
229}
230
231static int mocs(struct xe_gt *gt, struct drm_printer *p)
232{
233 xe_pm_runtime_get(gt_to_xe(gt));
234 xe_mocs_dump(gt, p);
235 xe_pm_runtime_put(gt_to_xe(gt));
236
237 return 0;
238}
239
240static int rcs_default_lrc(struct xe_gt *gt, struct drm_printer *p)
241{
242 xe_pm_runtime_get(gt_to_xe(gt));
243 xe_lrc_dump_default(p, gt, XE_ENGINE_CLASS_RENDER);
244 xe_pm_runtime_put(gt_to_xe(gt));
245
246 return 0;
247}
248
249static int ccs_default_lrc(struct xe_gt *gt, struct drm_printer *p)
250{
251 xe_pm_runtime_get(gt_to_xe(gt));
252 xe_lrc_dump_default(p, gt, XE_ENGINE_CLASS_COMPUTE);
253 xe_pm_runtime_put(gt_to_xe(gt));
254
255 return 0;
256}
257
258static int bcs_default_lrc(struct xe_gt *gt, struct drm_printer *p)
259{
260 xe_pm_runtime_get(gt_to_xe(gt));
261 xe_lrc_dump_default(p, gt, XE_ENGINE_CLASS_COPY);
262 xe_pm_runtime_put(gt_to_xe(gt));
263
264 return 0;
265}
266
267static int vcs_default_lrc(struct xe_gt *gt, struct drm_printer *p)
268{
269 xe_pm_runtime_get(gt_to_xe(gt));
270 xe_lrc_dump_default(p, gt, XE_ENGINE_CLASS_VIDEO_DECODE);
271 xe_pm_runtime_put(gt_to_xe(gt));
272
273 return 0;
274}
275
276static int vecs_default_lrc(struct xe_gt *gt, struct drm_printer *p)
277{
278 xe_pm_runtime_get(gt_to_xe(gt));
279 xe_lrc_dump_default(p, gt, XE_ENGINE_CLASS_VIDEO_ENHANCE);
280 xe_pm_runtime_put(gt_to_xe(gt));
281
282 return 0;
283}
284
285static int hwconfig(struct xe_gt *gt, struct drm_printer *p)
286{
287 xe_pm_runtime_get(gt_to_xe(gt));
288 xe_guc_hwconfig_dump(>->uc.guc, p);
289 xe_pm_runtime_put(gt_to_xe(gt));
290
291 return 0;
292}
293
294static const struct drm_info_list debugfs_list[] = {
295 {"hw_engines", .show = xe_gt_debugfs_simple_show, .data = hw_engines},
296 {"force_reset", .show = xe_gt_debugfs_simple_show, .data = force_reset},
297 {"force_reset_sync", .show = xe_gt_debugfs_simple_show, .data = force_reset_sync},
298 {"sa_info", .show = xe_gt_debugfs_simple_show, .data = sa_info},
299 {"topology", .show = xe_gt_debugfs_simple_show, .data = topology},
300 {"steering", .show = xe_gt_debugfs_simple_show, .data = steering},
301 {"ggtt", .show = xe_gt_debugfs_simple_show, .data = ggtt},
302 {"powergate_info", .show = xe_gt_debugfs_simple_show, .data = powergate_info},
303 {"register-save-restore", .show = xe_gt_debugfs_simple_show, .data = register_save_restore},
304 {"workarounds", .show = xe_gt_debugfs_simple_show, .data = workarounds},
305 {"pat", .show = xe_gt_debugfs_simple_show, .data = pat},
306 {"mocs", .show = xe_gt_debugfs_simple_show, .data = mocs},
307 {"default_lrc_rcs", .show = xe_gt_debugfs_simple_show, .data = rcs_default_lrc},
308 {"default_lrc_ccs", .show = xe_gt_debugfs_simple_show, .data = ccs_default_lrc},
309 {"default_lrc_bcs", .show = xe_gt_debugfs_simple_show, .data = bcs_default_lrc},
310 {"default_lrc_vcs", .show = xe_gt_debugfs_simple_show, .data = vcs_default_lrc},
311 {"default_lrc_vecs", .show = xe_gt_debugfs_simple_show, .data = vecs_default_lrc},
312 {"stats", .show = xe_gt_debugfs_simple_show, .data = xe_gt_stats_print_info},
313 {"hwconfig", .show = xe_gt_debugfs_simple_show, .data = hwconfig},
314};
315
316void xe_gt_debugfs_register(struct xe_gt *gt)
317{
318 struct xe_device *xe = gt_to_xe(gt);
319 struct drm_minor *minor = gt_to_xe(gt)->drm.primary;
320 struct dentry *root;
321 char name[8];
322
323 xe_gt_assert(gt, minor->debugfs_root);
324
325 snprintf(name, sizeof(name), "gt%d", gt->info.id);
326 root = debugfs_create_dir(name, minor->debugfs_root);
327 if (IS_ERR(root)) {
328 drm_warn(&xe->drm, "Create GT directory failed");
329 return;
330 }
331
332 /*
333 * Store the xe_gt pointer as private data of the gt/ directory node
334 * so other GT specific attributes under that directory may refer to
335 * it by looking at its parent node private data.
336 */
337 root->d_inode->i_private = gt;
338
339 drm_debugfs_create_files(debugfs_list,
340 ARRAY_SIZE(debugfs_list),
341 root, minor);
342
343 xe_uc_debugfs_register(>->uc, root);
344
345 if (IS_SRIOV_PF(xe))
346 xe_gt_sriov_pf_debugfs_register(gt, root);
347 else if (IS_SRIOV_VF(xe))
348 xe_gt_sriov_vf_debugfs_register(gt, root);
349}