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_tuning.h" 34 #include "xe_uc_debugfs.h" 35 #include "xe_wa.h" 36 37 /** 38 * xe_gt_debugfs_simple_show - A show callback for struct drm_info_list 39 * @m: the &seq_file 40 * @data: data used by the drm debugfs helpers 41 * 42 * This callback can be used in struct drm_info_list to describe debugfs 43 * files that are &xe_gt specific. 44 * 45 * It is assumed that those debugfs files will be created on directory entry 46 * which struct dentry d_inode->i_private points to &xe_gt. 47 * 48 * This function assumes that &m->private will be set to the &struct 49 * drm_info_node corresponding to the instance of the info on a given &struct 50 * drm_minor (see struct drm_info_list.show for details). 51 * 52 * This function also assumes that struct drm_info_list.data will point to the 53 * function code that will actually print a file content:: 54 * 55 * int (*print)(struct xe_gt *, struct drm_printer *) 56 * 57 * Example:: 58 * 59 * int foo(struct xe_gt *gt, struct drm_printer *p) 60 * { 61 * drm_printf(p, "GT%u\n", gt->info.id); 62 * return 0; 63 * } 64 * 65 * static const struct drm_info_list bar[] = { 66 * { name = "foo", .show = xe_gt_debugfs_simple_show, .data = foo }, 67 * }; 68 * 69 * dir = debugfs_create_dir("gt", parent); 70 * dir->d_inode->i_private = gt; 71 * drm_debugfs_create_files(bar, ARRAY_SIZE(bar), dir, minor); 72 * 73 * Return: 0 on success or a negative error code on failure. 74 */ 75 int xe_gt_debugfs_simple_show(struct seq_file *m, void *data) 76 { 77 struct drm_printer p = drm_seq_file_printer(m); 78 struct drm_info_node *node = m->private; 79 struct dentry *parent = node->dent->d_parent; 80 struct xe_gt *gt = parent->d_inode->i_private; 81 int (*print)(struct xe_gt *, struct drm_printer *) = node->info_ent->data; 82 83 if (WARN_ON(!print)) 84 return -EINVAL; 85 86 return print(gt, &p); 87 } 88 89 static int hw_engines(struct xe_gt *gt, struct drm_printer *p) 90 { 91 struct xe_device *xe = gt_to_xe(gt); 92 struct xe_hw_engine *hwe; 93 enum xe_hw_engine_id id; 94 unsigned int fw_ref; 95 int ret = 0; 96 97 xe_pm_runtime_get(xe); 98 fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FORCEWAKE_ALL); 99 if (!xe_force_wake_ref_has_domain(fw_ref, XE_FORCEWAKE_ALL)) { 100 ret = -ETIMEDOUT; 101 goto fw_put; 102 } 103 104 for_each_hw_engine(hwe, gt, id) 105 xe_hw_engine_print(hwe, p); 106 107 fw_put: 108 xe_force_wake_put(gt_to_fw(gt), fw_ref); 109 xe_pm_runtime_put(xe); 110 111 return ret; 112 } 113 114 static int powergate_info(struct xe_gt *gt, struct drm_printer *p) 115 { 116 int ret; 117 118 xe_pm_runtime_get(gt_to_xe(gt)); 119 ret = xe_gt_idle_pg_print(gt, p); 120 xe_pm_runtime_put(gt_to_xe(gt)); 121 122 return ret; 123 } 124 125 static int force_reset(struct xe_gt *gt, struct drm_printer *p) 126 { 127 xe_pm_runtime_get(gt_to_xe(gt)); 128 xe_gt_reset_async(gt); 129 xe_pm_runtime_put(gt_to_xe(gt)); 130 131 return 0; 132 } 133 134 static int force_reset_sync(struct xe_gt *gt, struct drm_printer *p) 135 { 136 xe_pm_runtime_get(gt_to_xe(gt)); 137 xe_gt_reset(gt); 138 xe_pm_runtime_put(gt_to_xe(gt)); 139 140 return 0; 141 } 142 143 static 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 } 154 155 static 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 } 163 164 static 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 } 172 173 static 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 } 183 184 static 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 } 212 213 static 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 } 221 222 static int tunings(struct xe_gt *gt, struct drm_printer *p) 223 { 224 xe_pm_runtime_get(gt_to_xe(gt)); 225 xe_tuning_dump(gt, p); 226 xe_pm_runtime_put(gt_to_xe(gt)); 227 228 return 0; 229 } 230 231 static int pat(struct xe_gt *gt, struct drm_printer *p) 232 { 233 xe_pm_runtime_get(gt_to_xe(gt)); 234 xe_pat_dump(gt, p); 235 xe_pm_runtime_put(gt_to_xe(gt)); 236 237 return 0; 238 } 239 240 static int mocs(struct xe_gt *gt, struct drm_printer *p) 241 { 242 xe_pm_runtime_get(gt_to_xe(gt)); 243 xe_mocs_dump(gt, p); 244 xe_pm_runtime_put(gt_to_xe(gt)); 245 246 return 0; 247 } 248 249 static int rcs_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_RENDER); 253 xe_pm_runtime_put(gt_to_xe(gt)); 254 255 return 0; 256 } 257 258 static int ccs_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_COMPUTE); 262 xe_pm_runtime_put(gt_to_xe(gt)); 263 264 return 0; 265 } 266 267 static int bcs_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_COPY); 271 xe_pm_runtime_put(gt_to_xe(gt)); 272 273 return 0; 274 } 275 276 static int vcs_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_DECODE); 280 xe_pm_runtime_put(gt_to_xe(gt)); 281 282 return 0; 283 } 284 285 static int vecs_default_lrc(struct xe_gt *gt, struct drm_printer *p) 286 { 287 xe_pm_runtime_get(gt_to_xe(gt)); 288 xe_lrc_dump_default(p, gt, XE_ENGINE_CLASS_VIDEO_ENHANCE); 289 xe_pm_runtime_put(gt_to_xe(gt)); 290 291 return 0; 292 } 293 294 static int hwconfig(struct xe_gt *gt, struct drm_printer *p) 295 { 296 xe_pm_runtime_get(gt_to_xe(gt)); 297 xe_guc_hwconfig_dump(>->uc.guc, p); 298 xe_pm_runtime_put(gt_to_xe(gt)); 299 300 return 0; 301 } 302 303 /* 304 * only for GT debugfs files which can be safely used on the VF as well: 305 * - without access to the GT privileged registers 306 * - without access to the PF specific data 307 */ 308 static const struct drm_info_list vf_safe_debugfs_list[] = { 309 {"force_reset", .show = xe_gt_debugfs_simple_show, .data = force_reset}, 310 {"force_reset_sync", .show = xe_gt_debugfs_simple_show, .data = force_reset_sync}, 311 {"sa_info", .show = xe_gt_debugfs_simple_show, .data = sa_info}, 312 {"topology", .show = xe_gt_debugfs_simple_show, .data = topology}, 313 {"ggtt", .show = xe_gt_debugfs_simple_show, .data = ggtt}, 314 {"register-save-restore", .show = xe_gt_debugfs_simple_show, .data = register_save_restore}, 315 {"workarounds", .show = xe_gt_debugfs_simple_show, .data = workarounds}, 316 {"tunings", .show = xe_gt_debugfs_simple_show, .data = tunings}, 317 {"default_lrc_rcs", .show = xe_gt_debugfs_simple_show, .data = rcs_default_lrc}, 318 {"default_lrc_ccs", .show = xe_gt_debugfs_simple_show, .data = ccs_default_lrc}, 319 {"default_lrc_bcs", .show = xe_gt_debugfs_simple_show, .data = bcs_default_lrc}, 320 {"default_lrc_vcs", .show = xe_gt_debugfs_simple_show, .data = vcs_default_lrc}, 321 {"default_lrc_vecs", .show = xe_gt_debugfs_simple_show, .data = vecs_default_lrc}, 322 {"stats", .show = xe_gt_debugfs_simple_show, .data = xe_gt_stats_print_info}, 323 {"hwconfig", .show = xe_gt_debugfs_simple_show, .data = hwconfig}, 324 }; 325 326 /* everything else should be added here */ 327 static const struct drm_info_list pf_only_debugfs_list[] = { 328 {"hw_engines", .show = xe_gt_debugfs_simple_show, .data = hw_engines}, 329 {"mocs", .show = xe_gt_debugfs_simple_show, .data = mocs}, 330 {"pat", .show = xe_gt_debugfs_simple_show, .data = pat}, 331 {"powergate_info", .show = xe_gt_debugfs_simple_show, .data = powergate_info}, 332 {"steering", .show = xe_gt_debugfs_simple_show, .data = steering}, 333 }; 334 335 void xe_gt_debugfs_register(struct xe_gt *gt) 336 { 337 struct xe_device *xe = gt_to_xe(gt); 338 struct drm_minor *minor = gt_to_xe(gt)->drm.primary; 339 struct dentry *root; 340 char name[8]; 341 342 xe_gt_assert(gt, minor->debugfs_root); 343 344 snprintf(name, sizeof(name), "gt%d", gt->info.id); 345 root = debugfs_create_dir(name, minor->debugfs_root); 346 if (IS_ERR(root)) { 347 drm_warn(&xe->drm, "Create GT directory failed"); 348 return; 349 } 350 351 /* 352 * Store the xe_gt pointer as private data of the gt/ directory node 353 * so other GT specific attributes under that directory may refer to 354 * it by looking at its parent node private data. 355 */ 356 root->d_inode->i_private = gt; 357 358 drm_debugfs_create_files(vf_safe_debugfs_list, 359 ARRAY_SIZE(vf_safe_debugfs_list), 360 root, minor); 361 362 if (!IS_SRIOV_VF(xe)) 363 drm_debugfs_create_files(pf_only_debugfs_list, 364 ARRAY_SIZE(pf_only_debugfs_list), 365 root, minor); 366 367 xe_uc_debugfs_register(>->uc, root); 368 369 if (IS_SRIOV_PF(xe)) 370 xe_gt_sriov_pf_debugfs_register(gt, root); 371 else if (IS_SRIOV_VF(xe)) 372 xe_gt_sriov_vf_debugfs_register(gt, root); 373 } 374