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 guard(xe_pm_runtime)(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 drm_printf(&p, "gt%d multi_queue_engine_class_mask 0x%x\n", id, 97 gt->info.multi_queue_engine_class_mask); 98 } 99 100 return 0; 101 } 102 103 static int sriov_info(struct seq_file *m, void *data) 104 { 105 struct xe_device *xe = node_to_xe(m->private); 106 struct drm_printer p = drm_seq_file_printer(m); 107 108 xe_sriov_print_info(xe, &p); 109 return 0; 110 } 111 112 static int workarounds(struct xe_device *xe, struct drm_printer *p) 113 { 114 guard(xe_pm_runtime)(xe); 115 xe_wa_device_dump(xe, p); 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 guard(xe_pm_runtime)(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 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 guard(xe_pm_runtime)(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 return 0; 181 } 182 183 static const struct drm_info_list debugfs_list[] = { 184 {"info", info, 0}, 185 { .name = "sriov_info", .show = sriov_info, }, 186 { .name = "workarounds", .show = workaround_info, }, 187 }; 188 189 static const struct drm_info_list debugfs_residencies[] = { 190 { .name = "dgfx_pkg_residencies", .show = dgfx_pkg_residencies_show, }, 191 { .name = "dgfx_pcie_link_residencies", .show = dgfx_pcie_link_residencies_show, }, 192 }; 193 194 static int forcewake_open(struct inode *inode, struct file *file) 195 { 196 struct xe_device *xe = inode->i_private; 197 struct xe_gt *gt; 198 u8 id, last_gt; 199 unsigned int fw_ref; 200 201 xe_pm_runtime_get(xe); 202 for_each_gt(gt, xe, id) { 203 last_gt = id; 204 205 fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FORCEWAKE_ALL); 206 if (!xe_force_wake_ref_has_domain(fw_ref, XE_FORCEWAKE_ALL)) 207 goto err_fw_get; 208 } 209 210 return 0; 211 212 err_fw_get: 213 for_each_gt(gt, xe, id) { 214 if (id < last_gt) 215 xe_force_wake_put(gt_to_fw(gt), XE_FORCEWAKE_ALL); 216 else if (id == last_gt) 217 xe_force_wake_put(gt_to_fw(gt), fw_ref); 218 else 219 break; 220 } 221 222 xe_pm_runtime_put(xe); 223 return -ETIMEDOUT; 224 } 225 226 static int forcewake_release(struct inode *inode, struct file *file) 227 { 228 struct xe_device *xe = inode->i_private; 229 struct xe_gt *gt; 230 u8 id; 231 232 for_each_gt(gt, xe, id) 233 xe_force_wake_put(gt_to_fw(gt), XE_FORCEWAKE_ALL); 234 xe_pm_runtime_put(xe); 235 236 return 0; 237 } 238 239 static const struct file_operations forcewake_all_fops = { 240 .owner = THIS_MODULE, 241 .open = forcewake_open, 242 .release = forcewake_release, 243 }; 244 245 static ssize_t wedged_mode_show(struct file *f, char __user *ubuf, 246 size_t size, loff_t *pos) 247 { 248 struct xe_device *xe = file_inode(f)->i_private; 249 char buf[32]; 250 int len = 0; 251 252 len = scnprintf(buf, sizeof(buf), "%d\n", xe->wedged.mode); 253 254 return simple_read_from_buffer(ubuf, size, pos, buf, len); 255 } 256 257 static ssize_t wedged_mode_set(struct file *f, const char __user *ubuf, 258 size_t size, loff_t *pos) 259 { 260 struct xe_device *xe = file_inode(f)->i_private; 261 struct xe_gt *gt; 262 u32 wedged_mode; 263 ssize_t ret; 264 u8 id; 265 266 ret = kstrtouint_from_user(ubuf, size, 0, &wedged_mode); 267 if (ret) 268 return ret; 269 270 if (wedged_mode > 2) 271 return -EINVAL; 272 273 if (xe->wedged.mode == wedged_mode) 274 return size; 275 276 xe->wedged.mode = wedged_mode; 277 278 guard(xe_pm_runtime)(xe); 279 for_each_gt(gt, xe, id) { 280 ret = xe_guc_ads_scheduler_policy_toggle_reset(>->uc.guc.ads); 281 if (ret) { 282 xe_gt_err(gt, "Failed to update GuC ADS scheduler policy. GuC may still cause engine reset even with wedged_mode=2\n"); 283 return -EIO; 284 } 285 } 286 287 return size; 288 } 289 290 static const struct file_operations wedged_mode_fops = { 291 .owner = THIS_MODULE, 292 .read = wedged_mode_show, 293 .write = wedged_mode_set, 294 }; 295 296 static ssize_t atomic_svm_timeslice_ms_show(struct file *f, char __user *ubuf, 297 size_t size, loff_t *pos) 298 { 299 struct xe_device *xe = file_inode(f)->i_private; 300 char buf[32]; 301 int len = 0; 302 303 len = scnprintf(buf, sizeof(buf), "%d\n", xe->atomic_svm_timeslice_ms); 304 305 return simple_read_from_buffer(ubuf, size, pos, buf, len); 306 } 307 308 static ssize_t atomic_svm_timeslice_ms_set(struct file *f, 309 const char __user *ubuf, 310 size_t size, loff_t *pos) 311 { 312 struct xe_device *xe = file_inode(f)->i_private; 313 u32 atomic_svm_timeslice_ms; 314 ssize_t ret; 315 316 ret = kstrtouint_from_user(ubuf, size, 0, &atomic_svm_timeslice_ms); 317 if (ret) 318 return ret; 319 320 xe->atomic_svm_timeslice_ms = atomic_svm_timeslice_ms; 321 322 return size; 323 } 324 325 static const struct file_operations atomic_svm_timeslice_ms_fops = { 326 .owner = THIS_MODULE, 327 .read = atomic_svm_timeslice_ms_show, 328 .write = atomic_svm_timeslice_ms_set, 329 }; 330 331 static ssize_t disable_late_binding_show(struct file *f, char __user *ubuf, 332 size_t size, loff_t *pos) 333 { 334 struct xe_device *xe = file_inode(f)->i_private; 335 struct xe_late_bind *late_bind = &xe->late_bind; 336 char buf[32]; 337 int len; 338 339 len = scnprintf(buf, sizeof(buf), "%d\n", late_bind->disable); 340 341 return simple_read_from_buffer(ubuf, size, pos, buf, len); 342 } 343 344 static ssize_t disable_late_binding_set(struct file *f, const char __user *ubuf, 345 size_t size, loff_t *pos) 346 { 347 struct xe_device *xe = file_inode(f)->i_private; 348 struct xe_late_bind *late_bind = &xe->late_bind; 349 bool val; 350 int ret; 351 352 ret = kstrtobool_from_user(ubuf, size, &val); 353 if (ret) 354 return ret; 355 356 late_bind->disable = val; 357 return size; 358 } 359 360 static const struct file_operations disable_late_binding_fops = { 361 .owner = THIS_MODULE, 362 .read = disable_late_binding_show, 363 .write = disable_late_binding_set, 364 }; 365 366 void xe_debugfs_register(struct xe_device *xe) 367 { 368 struct ttm_device *bdev = &xe->ttm; 369 struct drm_minor *minor = xe->drm.primary; 370 struct dentry *root = minor->debugfs_root; 371 struct ttm_resource_manager *man; 372 struct xe_tile *tile; 373 struct xe_gt *gt; 374 u8 tile_id; 375 u8 id; 376 377 drm_debugfs_create_files(debugfs_list, 378 ARRAY_SIZE(debugfs_list), 379 root, minor); 380 381 if (xe->info.platform == XE_BATTLEMAGE && !IS_SRIOV_VF(xe)) { 382 drm_debugfs_create_files(debugfs_residencies, 383 ARRAY_SIZE(debugfs_residencies), 384 root, minor); 385 fault_create_debugfs_attr("inject_csc_hw_error", root, 386 &inject_csc_hw_error); 387 } 388 389 debugfs_create_file("forcewake_all", 0400, root, xe, 390 &forcewake_all_fops); 391 392 debugfs_create_file("wedged_mode", 0600, root, xe, 393 &wedged_mode_fops); 394 395 debugfs_create_file("atomic_svm_timeslice_ms", 0600, root, xe, 396 &atomic_svm_timeslice_ms_fops); 397 398 debugfs_create_file("disable_late_binding", 0600, root, xe, 399 &disable_late_binding_fops); 400 401 man = ttm_manager_type(bdev, XE_PL_TT); 402 ttm_resource_manager_create_debugfs(man, root, "gtt_mm"); 403 404 man = ttm_manager_type(bdev, XE_PL_STOLEN); 405 if (man) 406 ttm_resource_manager_create_debugfs(man, root, "stolen_mm"); 407 408 for_each_tile(tile, xe, tile_id) 409 xe_tile_debugfs_register(tile); 410 411 for_each_gt(gt, xe, id) 412 xe_gt_debugfs_register(gt); 413 414 xe_pxp_debugfs_register(xe->pxp); 415 416 xe_psmi_debugfs_register(xe); 417 418 fault_create_debugfs_attr("fail_gt_reset", root, >_reset_failure); 419 420 if (IS_SRIOV_PF(xe)) 421 xe_sriov_pf_debugfs_register(xe, root); 422 else if (IS_SRIOV_VF(xe)) 423 xe_sriov_vf_debugfs_register(xe, root); 424 } 425