1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2022 Intel Corporation 4 */ 5 6 #include "xe_debugfs.h" 7 8 #include <linux/debugfs.h> 9 #include <linux/fault-inject.h> 10 #include <linux/string_helpers.h> 11 12 #include <drm/drm_debugfs.h> 13 14 #include "regs/xe_pmt.h" 15 #include "xe_bo.h" 16 #include "xe_device.h" 17 #include "xe_force_wake.h" 18 #include "xe_gt_debugfs.h" 19 #include "xe_gt_printk.h" 20 #include "xe_guc_ads.h" 21 #include "xe_mmio.h" 22 #include "xe_pm.h" 23 #include "xe_psmi.h" 24 #include "xe_pxp_debugfs.h" 25 #include "xe_sriov.h" 26 #include "xe_sriov_pf_debugfs.h" 27 #include "xe_sriov_vf.h" 28 #include "xe_step.h" 29 #include "xe_tile_debugfs.h" 30 #include "xe_vsec.h" 31 #include "xe_wa.h" 32 33 #ifdef CONFIG_DRM_XE_DEBUG 34 #include "xe_bo_evict.h" 35 #include "xe_migrate.h" 36 #include "xe_vm.h" 37 #endif 38 39 DECLARE_FAULT_ATTR(gt_reset_failure); 40 DECLARE_FAULT_ATTR(inject_csc_hw_error); 41 42 static void read_residency_counter(struct xe_device *xe, struct xe_mmio *mmio, 43 u32 offset, const char *name, struct drm_printer *p) 44 { 45 u64 residency = 0; 46 int ret; 47 48 ret = xe_pmt_telem_read(to_pci_dev(xe->drm.dev), 49 xe_mmio_read32(mmio, PUNIT_TELEMETRY_GUID), 50 &residency, offset, sizeof(residency)); 51 if (ret != sizeof(residency)) { 52 drm_warn(&xe->drm, "%s counter failed to read, ret %d\n", name, ret); 53 return; 54 } 55 56 drm_printf(p, "%s : %llu\n", name, residency); 57 } 58 59 static struct xe_device *node_to_xe(struct drm_info_node *node) 60 { 61 return to_xe_device(node->minor->dev); 62 } 63 64 static int info(struct seq_file *m, void *data) 65 { 66 struct xe_device *xe = node_to_xe(m->private); 67 struct drm_printer p = drm_seq_file_printer(m); 68 struct xe_gt *gt; 69 u8 id; 70 71 xe_pm_runtime_get(xe); 72 73 drm_printf(&p, "graphics_verx100 %d\n", xe->info.graphics_verx100); 74 drm_printf(&p, "media_verx100 %d\n", xe->info.media_verx100); 75 drm_printf(&p, "stepping G:%s M:%s B:%s\n", 76 xe_step_name(xe->info.step.graphics), 77 xe_step_name(xe->info.step.media), 78 xe_step_name(xe->info.step.basedie)); 79 drm_printf(&p, "is_dgfx %s\n", str_yes_no(xe->info.is_dgfx)); 80 drm_printf(&p, "platform %d\n", xe->info.platform); 81 drm_printf(&p, "subplatform %d\n", 82 xe->info.subplatform > XE_SUBPLATFORM_NONE ? xe->info.subplatform : 0); 83 drm_printf(&p, "devid 0x%x\n", xe->info.devid); 84 drm_printf(&p, "revid %d\n", xe->info.revid); 85 drm_printf(&p, "tile_count %d\n", xe->info.tile_count); 86 drm_printf(&p, "vm_max_level %d\n", xe->info.vm_max_level); 87 drm_printf(&p, "force_execlist %s\n", str_yes_no(xe->info.force_execlist)); 88 drm_printf(&p, "has_flat_ccs %s\n", str_yes_no(xe->info.has_flat_ccs)); 89 drm_printf(&p, "has_usm %s\n", str_yes_no(xe->info.has_usm)); 90 drm_printf(&p, "skip_guc_pc %s\n", str_yes_no(xe->info.skip_guc_pc)); 91 for_each_gt(gt, xe, id) { 92 drm_printf(&p, "gt%d force wake %d\n", id, 93 xe_force_wake_ref(gt_to_fw(gt), XE_FW_GT)); 94 drm_printf(&p, "gt%d engine_mask 0x%llx\n", id, 95 gt->info.engine_mask); 96 } 97 98 xe_pm_runtime_put(xe); 99 return 0; 100 } 101 102 static int sriov_info(struct seq_file *m, void *data) 103 { 104 struct xe_device *xe = node_to_xe(m->private); 105 struct drm_printer p = drm_seq_file_printer(m); 106 107 xe_sriov_print_info(xe, &p); 108 return 0; 109 } 110 111 static int workarounds(struct xe_device *xe, struct drm_printer *p) 112 { 113 xe_pm_runtime_get(xe); 114 xe_wa_device_dump(xe, p); 115 xe_pm_runtime_put(xe); 116 117 return 0; 118 } 119 120 static int workaround_info(struct seq_file *m, void *data) 121 { 122 struct xe_device *xe = node_to_xe(m->private); 123 struct drm_printer p = drm_seq_file_printer(m); 124 125 workarounds(xe, &p); 126 return 0; 127 } 128 129 static int dgfx_pkg_residencies_show(struct seq_file *m, void *data) 130 { 131 struct xe_device *xe; 132 struct xe_mmio *mmio; 133 struct drm_printer p; 134 135 xe = node_to_xe(m->private); 136 p = drm_seq_file_printer(m); 137 xe_pm_runtime_get(xe); 138 mmio = xe_root_tile_mmio(xe); 139 static const struct { 140 u32 offset; 141 const char *name; 142 } residencies[] = { 143 {BMG_G2_RESIDENCY_OFFSET, "Package G2"}, 144 {BMG_G6_RESIDENCY_OFFSET, "Package G6"}, 145 {BMG_G7_RESIDENCY_OFFSET, "Package G7"}, 146 {BMG_G8_RESIDENCY_OFFSET, "Package G8"}, 147 {BMG_G10_RESIDENCY_OFFSET, "Package G10"}, 148 {BMG_MODS_RESIDENCY_OFFSET, "Package ModS"} 149 }; 150 151 for (int i = 0; i < ARRAY_SIZE(residencies); i++) 152 read_residency_counter(xe, mmio, residencies[i].offset, residencies[i].name, &p); 153 154 xe_pm_runtime_put(xe); 155 return 0; 156 } 157 158 static int dgfx_pcie_link_residencies_show(struct seq_file *m, void *data) 159 { 160 struct xe_device *xe; 161 struct xe_mmio *mmio; 162 struct drm_printer p; 163 164 xe = node_to_xe(m->private); 165 p = drm_seq_file_printer(m); 166 xe_pm_runtime_get(xe); 167 mmio = xe_root_tile_mmio(xe); 168 169 static const struct { 170 u32 offset; 171 const char *name; 172 } residencies[] = { 173 {BMG_PCIE_LINK_L0_RESIDENCY_OFFSET, "PCIE LINK L0 RESIDENCY"}, 174 {BMG_PCIE_LINK_L1_RESIDENCY_OFFSET, "PCIE LINK L1 RESIDENCY"}, 175 {BMG_PCIE_LINK_L1_2_RESIDENCY_OFFSET, "PCIE LINK L1.2 RESIDENCY"} 176 }; 177 178 for (int i = 0; i < ARRAY_SIZE(residencies); i++) 179 read_residency_counter(xe, mmio, residencies[i].offset, residencies[i].name, &p); 180 181 xe_pm_runtime_put(xe); 182 return 0; 183 } 184 185 static const struct drm_info_list debugfs_list[] = { 186 {"info", info, 0}, 187 { .name = "sriov_info", .show = sriov_info, }, 188 { .name = "workarounds", .show = workaround_info, }, 189 }; 190 191 static const struct drm_info_list debugfs_residencies[] = { 192 { .name = "dgfx_pkg_residencies", .show = dgfx_pkg_residencies_show, }, 193 { .name = "dgfx_pcie_link_residencies", .show = dgfx_pcie_link_residencies_show, }, 194 }; 195 196 static int forcewake_open(struct inode *inode, struct file *file) 197 { 198 struct xe_device *xe = inode->i_private; 199 struct xe_gt *gt; 200 u8 id, last_gt; 201 unsigned int fw_ref; 202 203 xe_pm_runtime_get(xe); 204 for_each_gt(gt, xe, id) { 205 last_gt = id; 206 207 fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FORCEWAKE_ALL); 208 if (!xe_force_wake_ref_has_domain(fw_ref, XE_FORCEWAKE_ALL)) 209 goto err_fw_get; 210 } 211 212 return 0; 213 214 err_fw_get: 215 for_each_gt(gt, xe, id) { 216 if (id < last_gt) 217 xe_force_wake_put(gt_to_fw(gt), XE_FORCEWAKE_ALL); 218 else if (id == last_gt) 219 xe_force_wake_put(gt_to_fw(gt), fw_ref); 220 else 221 break; 222 } 223 224 xe_pm_runtime_put(xe); 225 return -ETIMEDOUT; 226 } 227 228 static int forcewake_release(struct inode *inode, struct file *file) 229 { 230 struct xe_device *xe = inode->i_private; 231 struct xe_gt *gt; 232 u8 id; 233 234 for_each_gt(gt, xe, id) 235 xe_force_wake_put(gt_to_fw(gt), XE_FORCEWAKE_ALL); 236 xe_pm_runtime_put(xe); 237 238 return 0; 239 } 240 241 static const struct file_operations forcewake_all_fops = { 242 .owner = THIS_MODULE, 243 .open = forcewake_open, 244 .release = forcewake_release, 245 }; 246 247 static ssize_t wedged_mode_show(struct file *f, char __user *ubuf, 248 size_t size, loff_t *pos) 249 { 250 struct xe_device *xe = file_inode(f)->i_private; 251 char buf[32]; 252 int len = 0; 253 254 len = scnprintf(buf, sizeof(buf), "%d\n", xe->wedged.mode); 255 256 return simple_read_from_buffer(ubuf, size, pos, buf, len); 257 } 258 259 static ssize_t wedged_mode_set(struct file *f, const char __user *ubuf, 260 size_t size, loff_t *pos) 261 { 262 struct xe_device *xe = file_inode(f)->i_private; 263 struct xe_gt *gt; 264 u32 wedged_mode; 265 ssize_t ret; 266 u8 id; 267 268 ret = kstrtouint_from_user(ubuf, size, 0, &wedged_mode); 269 if (ret) 270 return ret; 271 272 if (wedged_mode > 2) 273 return -EINVAL; 274 275 if (xe->wedged.mode == wedged_mode) 276 return size; 277 278 xe->wedged.mode = wedged_mode; 279 280 xe_pm_runtime_get(xe); 281 for_each_gt(gt, xe, id) { 282 ret = xe_guc_ads_scheduler_policy_toggle_reset(>->uc.guc.ads); 283 if (ret) { 284 xe_gt_err(gt, "Failed to update GuC ADS scheduler policy. GuC may still cause engine reset even with wedged_mode=2\n"); 285 xe_pm_runtime_put(xe); 286 return -EIO; 287 } 288 } 289 xe_pm_runtime_put(xe); 290 291 return size; 292 } 293 294 static const struct file_operations wedged_mode_fops = { 295 .owner = THIS_MODULE, 296 .read = wedged_mode_show, 297 .write = wedged_mode_set, 298 }; 299 300 static ssize_t atomic_svm_timeslice_ms_show(struct file *f, char __user *ubuf, 301 size_t size, loff_t *pos) 302 { 303 struct xe_device *xe = file_inode(f)->i_private; 304 char buf[32]; 305 int len = 0; 306 307 len = scnprintf(buf, sizeof(buf), "%d\n", xe->atomic_svm_timeslice_ms); 308 309 return simple_read_from_buffer(ubuf, size, pos, buf, len); 310 } 311 312 static ssize_t atomic_svm_timeslice_ms_set(struct file *f, 313 const char __user *ubuf, 314 size_t size, loff_t *pos) 315 { 316 struct xe_device *xe = file_inode(f)->i_private; 317 u32 atomic_svm_timeslice_ms; 318 ssize_t ret; 319 320 ret = kstrtouint_from_user(ubuf, size, 0, &atomic_svm_timeslice_ms); 321 if (ret) 322 return ret; 323 324 xe->atomic_svm_timeslice_ms = atomic_svm_timeslice_ms; 325 326 return size; 327 } 328 329 static const struct file_operations atomic_svm_timeslice_ms_fops = { 330 .owner = THIS_MODULE, 331 .read = atomic_svm_timeslice_ms_show, 332 .write = atomic_svm_timeslice_ms_set, 333 }; 334 335 static ssize_t disable_late_binding_show(struct file *f, char __user *ubuf, 336 size_t size, loff_t *pos) 337 { 338 struct xe_device *xe = file_inode(f)->i_private; 339 struct xe_late_bind *late_bind = &xe->late_bind; 340 char buf[32]; 341 int len; 342 343 len = scnprintf(buf, sizeof(buf), "%d\n", late_bind->disable); 344 345 return simple_read_from_buffer(ubuf, size, pos, buf, len); 346 } 347 348 static ssize_t disable_late_binding_set(struct file *f, const char __user *ubuf, 349 size_t size, loff_t *pos) 350 { 351 struct xe_device *xe = file_inode(f)->i_private; 352 struct xe_late_bind *late_bind = &xe->late_bind; 353 bool val; 354 int ret; 355 356 ret = kstrtobool_from_user(ubuf, size, &val); 357 if (ret) 358 return ret; 359 360 late_bind->disable = val; 361 return size; 362 } 363 364 static const struct file_operations disable_late_binding_fops = { 365 .owner = THIS_MODULE, 366 .read = disable_late_binding_show, 367 .write = disable_late_binding_set, 368 }; 369 370 void xe_debugfs_register(struct xe_device *xe) 371 { 372 struct ttm_device *bdev = &xe->ttm; 373 struct drm_minor *minor = xe->drm.primary; 374 struct dentry *root = minor->debugfs_root; 375 struct ttm_resource_manager *man; 376 struct xe_tile *tile; 377 struct xe_gt *gt; 378 u32 mem_type; 379 u8 tile_id; 380 u8 id; 381 382 drm_debugfs_create_files(debugfs_list, 383 ARRAY_SIZE(debugfs_list), 384 root, minor); 385 386 if (xe->info.platform == XE_BATTLEMAGE && !IS_SRIOV_VF(xe)) { 387 drm_debugfs_create_files(debugfs_residencies, 388 ARRAY_SIZE(debugfs_residencies), 389 root, minor); 390 fault_create_debugfs_attr("inject_csc_hw_error", root, 391 &inject_csc_hw_error); 392 } 393 394 debugfs_create_file("forcewake_all", 0400, root, xe, 395 &forcewake_all_fops); 396 397 debugfs_create_file("wedged_mode", 0600, root, xe, 398 &wedged_mode_fops); 399 400 debugfs_create_file("atomic_svm_timeslice_ms", 0600, root, xe, 401 &atomic_svm_timeslice_ms_fops); 402 403 debugfs_create_file("disable_late_binding", 0600, root, xe, 404 &disable_late_binding_fops); 405 406 for (mem_type = XE_PL_VRAM0; mem_type <= XE_PL_VRAM1; ++mem_type) { 407 man = ttm_manager_type(bdev, mem_type); 408 409 if (man) { 410 char name[16]; 411 412 snprintf(name, sizeof(name), "vram%d_mm", mem_type - XE_PL_VRAM0); 413 ttm_resource_manager_create_debugfs(man, root, name); 414 } 415 } 416 417 man = ttm_manager_type(bdev, XE_PL_TT); 418 ttm_resource_manager_create_debugfs(man, root, "gtt_mm"); 419 420 man = ttm_manager_type(bdev, XE_PL_STOLEN); 421 if (man) 422 ttm_resource_manager_create_debugfs(man, root, "stolen_mm"); 423 424 for_each_tile(tile, xe, tile_id) 425 xe_tile_debugfs_register(tile); 426 427 for_each_gt(gt, xe, id) 428 xe_gt_debugfs_register(gt); 429 430 xe_pxp_debugfs_register(xe->pxp); 431 432 xe_psmi_debugfs_register(xe); 433 434 fault_create_debugfs_attr("fail_gt_reset", root, >_reset_failure); 435 436 if (IS_SRIOV_PF(xe)) 437 xe_sriov_pf_debugfs_register(xe, root); 438 else if (IS_SRIOV_VF(xe)) 439 xe_sriov_vf_debugfs_register(xe, root); 440 } 441