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.h" 27 #include "xe_sriov_vf.h" 28 #include "xe_step.h" 29 #include "xe_tile_debugfs.h" 30 #include "xe_wa.h" 31 #include "xe_vsec.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_G8_RESIDENCY_OFFSET, "Package G8"}, 146 {BMG_G10_RESIDENCY_OFFSET, "Package G10"}, 147 {BMG_MODS_RESIDENCY_OFFSET, "Package ModS"} 148 }; 149 150 for (int i = 0; i < ARRAY_SIZE(residencies); i++) 151 read_residency_counter(xe, mmio, residencies[i].offset, residencies[i].name, &p); 152 153 xe_pm_runtime_put(xe); 154 return 0; 155 } 156 157 static int dgfx_pcie_link_residencies_show(struct seq_file *m, void *data) 158 { 159 struct xe_device *xe; 160 struct xe_mmio *mmio; 161 struct drm_printer p; 162 163 xe = node_to_xe(m->private); 164 p = drm_seq_file_printer(m); 165 xe_pm_runtime_get(xe); 166 mmio = xe_root_tile_mmio(xe); 167 168 static const struct { 169 u32 offset; 170 const char *name; 171 } residencies[] = { 172 {BMG_PCIE_LINK_L0_RESIDENCY_OFFSET, "PCIE LINK L0 RESIDENCY"}, 173 {BMG_PCIE_LINK_L1_RESIDENCY_OFFSET, "PCIE LINK L1 RESIDENCY"}, 174 {BMG_PCIE_LINK_L1_2_RESIDENCY_OFFSET, "PCIE LINK L1.2 RESIDENCY"} 175 }; 176 177 for (int i = 0; i < ARRAY_SIZE(residencies); i++) 178 read_residency_counter(xe, mmio, residencies[i].offset, residencies[i].name, &p); 179 180 xe_pm_runtime_put(xe); 181 return 0; 182 } 183 184 static const struct drm_info_list debugfs_list[] = { 185 {"info", info, 0}, 186 { .name = "sriov_info", .show = sriov_info, }, 187 { .name = "workarounds", .show = workaround_info, }, 188 }; 189 190 static const struct drm_info_list debugfs_residencies[] = { 191 { .name = "dgfx_pkg_residencies", .show = dgfx_pkg_residencies_show, }, 192 { .name = "dgfx_pcie_link_residencies", .show = dgfx_pcie_link_residencies_show, }, 193 }; 194 195 static int forcewake_open(struct inode *inode, struct file *file) 196 { 197 struct xe_device *xe = inode->i_private; 198 struct xe_gt *gt; 199 u8 id, last_gt; 200 unsigned int fw_ref; 201 202 xe_pm_runtime_get(xe); 203 for_each_gt(gt, xe, id) { 204 last_gt = id; 205 206 fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FORCEWAKE_ALL); 207 if (!xe_force_wake_ref_has_domain(fw_ref, XE_FORCEWAKE_ALL)) 208 goto err_fw_get; 209 } 210 211 return 0; 212 213 err_fw_get: 214 for_each_gt(gt, xe, id) { 215 if (id < last_gt) 216 xe_force_wake_put(gt_to_fw(gt), XE_FORCEWAKE_ALL); 217 else if (id == last_gt) 218 xe_force_wake_put(gt_to_fw(gt), fw_ref); 219 else 220 break; 221 } 222 223 xe_pm_runtime_put(xe); 224 return -ETIMEDOUT; 225 } 226 227 static int forcewake_release(struct inode *inode, struct file *file) 228 { 229 struct xe_device *xe = inode->i_private; 230 struct xe_gt *gt; 231 u8 id; 232 233 for_each_gt(gt, xe, id) 234 xe_force_wake_put(gt_to_fw(gt), XE_FORCEWAKE_ALL); 235 xe_pm_runtime_put(xe); 236 237 return 0; 238 } 239 240 static const struct file_operations forcewake_all_fops = { 241 .owner = THIS_MODULE, 242 .open = forcewake_open, 243 .release = forcewake_release, 244 }; 245 246 static ssize_t wedged_mode_show(struct file *f, char __user *ubuf, 247 size_t size, loff_t *pos) 248 { 249 struct xe_device *xe = file_inode(f)->i_private; 250 char buf[32]; 251 int len = 0; 252 253 len = scnprintf(buf, sizeof(buf), "%d\n", xe->wedged.mode); 254 255 return simple_read_from_buffer(ubuf, size, pos, buf, len); 256 } 257 258 static ssize_t wedged_mode_set(struct file *f, const char __user *ubuf, 259 size_t size, loff_t *pos) 260 { 261 struct xe_device *xe = file_inode(f)->i_private; 262 struct xe_gt *gt; 263 u32 wedged_mode; 264 ssize_t ret; 265 u8 id; 266 267 ret = kstrtouint_from_user(ubuf, size, 0, &wedged_mode); 268 if (ret) 269 return ret; 270 271 if (wedged_mode > 2) 272 return -EINVAL; 273 274 if (xe->wedged.mode == wedged_mode) 275 return size; 276 277 xe->wedged.mode = wedged_mode; 278 279 xe_pm_runtime_get(xe); 280 for_each_gt(gt, xe, id) { 281 ret = xe_guc_ads_scheduler_policy_toggle_reset(>->uc.guc.ads); 282 if (ret) { 283 xe_gt_err(gt, "Failed to update GuC ADS scheduler policy. GuC may still cause engine reset even with wedged_mode=2\n"); 284 xe_pm_runtime_put(xe); 285 return -EIO; 286 } 287 } 288 xe_pm_runtime_put(xe); 289 290 return size; 291 } 292 293 static const struct file_operations wedged_mode_fops = { 294 .owner = THIS_MODULE, 295 .read = wedged_mode_show, 296 .write = wedged_mode_set, 297 }; 298 299 static ssize_t atomic_svm_timeslice_ms_show(struct file *f, char __user *ubuf, 300 size_t size, loff_t *pos) 301 { 302 struct xe_device *xe = file_inode(f)->i_private; 303 char buf[32]; 304 int len = 0; 305 306 len = scnprintf(buf, sizeof(buf), "%d\n", xe->atomic_svm_timeslice_ms); 307 308 return simple_read_from_buffer(ubuf, size, pos, buf, len); 309 } 310 311 static ssize_t atomic_svm_timeslice_ms_set(struct file *f, 312 const char __user *ubuf, 313 size_t size, loff_t *pos) 314 { 315 struct xe_device *xe = file_inode(f)->i_private; 316 u32 atomic_svm_timeslice_ms; 317 ssize_t ret; 318 319 ret = kstrtouint_from_user(ubuf, size, 0, &atomic_svm_timeslice_ms); 320 if (ret) 321 return ret; 322 323 xe->atomic_svm_timeslice_ms = atomic_svm_timeslice_ms; 324 325 return size; 326 } 327 328 static const struct file_operations atomic_svm_timeslice_ms_fops = { 329 .owner = THIS_MODULE, 330 .read = atomic_svm_timeslice_ms_show, 331 .write = atomic_svm_timeslice_ms_set, 332 }; 333 334 static ssize_t disable_late_binding_show(struct file *f, char __user *ubuf, 335 size_t size, loff_t *pos) 336 { 337 struct xe_device *xe = file_inode(f)->i_private; 338 struct xe_late_bind *late_bind = &xe->late_bind; 339 char buf[32]; 340 int len; 341 342 len = scnprintf(buf, sizeof(buf), "%d\n", late_bind->disable); 343 344 return simple_read_from_buffer(ubuf, size, pos, buf, len); 345 } 346 347 static ssize_t disable_late_binding_set(struct file *f, const char __user *ubuf, 348 size_t size, loff_t *pos) 349 { 350 struct xe_device *xe = file_inode(f)->i_private; 351 struct xe_late_bind *late_bind = &xe->late_bind; 352 u32 uval; 353 ssize_t ret; 354 355 ret = kstrtouint_from_user(ubuf, size, sizeof(uval), &uval); 356 if (ret) 357 return ret; 358 359 if (uval > 1) 360 return -EINVAL; 361 362 late_bind->disable = !!uval; 363 return size; 364 } 365 366 static const struct file_operations disable_late_binding_fops = { 367 .owner = THIS_MODULE, 368 .read = disable_late_binding_show, 369 .write = disable_late_binding_set, 370 }; 371 372 void xe_debugfs_register(struct xe_device *xe) 373 { 374 struct ttm_device *bdev = &xe->ttm; 375 struct drm_minor *minor = xe->drm.primary; 376 struct dentry *root = minor->debugfs_root; 377 struct ttm_resource_manager *man; 378 struct xe_tile *tile; 379 struct xe_gt *gt; 380 u32 mem_type; 381 u8 tile_id; 382 u8 id; 383 384 drm_debugfs_create_files(debugfs_list, 385 ARRAY_SIZE(debugfs_list), 386 root, minor); 387 388 if (xe->info.platform == XE_BATTLEMAGE && !IS_SRIOV_VF(xe)) { 389 drm_debugfs_create_files(debugfs_residencies, 390 ARRAY_SIZE(debugfs_residencies), 391 root, minor); 392 fault_create_debugfs_attr("inject_csc_hw_error", root, 393 &inject_csc_hw_error); 394 } 395 396 debugfs_create_file("forcewake_all", 0400, root, xe, 397 &forcewake_all_fops); 398 399 debugfs_create_file("wedged_mode", 0600, root, xe, 400 &wedged_mode_fops); 401 402 debugfs_create_file("atomic_svm_timeslice_ms", 0600, root, xe, 403 &atomic_svm_timeslice_ms_fops); 404 405 debugfs_create_file("disable_late_binding", 0600, root, xe, 406 &disable_late_binding_fops); 407 408 for (mem_type = XE_PL_VRAM0; mem_type <= XE_PL_VRAM1; ++mem_type) { 409 man = ttm_manager_type(bdev, mem_type); 410 411 if (man) { 412 char name[16]; 413 414 snprintf(name, sizeof(name), "vram%d_mm", mem_type - XE_PL_VRAM0); 415 ttm_resource_manager_create_debugfs(man, root, name); 416 } 417 } 418 419 man = ttm_manager_type(bdev, XE_PL_TT); 420 ttm_resource_manager_create_debugfs(man, root, "gtt_mm"); 421 422 man = ttm_manager_type(bdev, XE_PL_STOLEN); 423 if (man) 424 ttm_resource_manager_create_debugfs(man, root, "stolen_mm"); 425 426 for_each_tile(tile, xe, tile_id) 427 xe_tile_debugfs_register(tile); 428 429 for_each_gt(gt, xe, id) 430 xe_gt_debugfs_register(gt); 431 432 xe_pxp_debugfs_register(xe->pxp); 433 434 xe_psmi_debugfs_register(xe); 435 436 fault_create_debugfs_attr("fail_gt_reset", root, >_reset_failure); 437 438 if (IS_SRIOV_PF(xe)) 439 xe_sriov_pf_debugfs_register(xe, root); 440 else if (IS_SRIOV_VF(xe)) 441 xe_sriov_vf_debugfs_register(xe, root); 442 } 443