1/*
   2 * Copyright 2008 Advanced Micro Devices, Inc.
   3 * Copyright 2008 Red Hat Inc.
   4 * Copyright 2009 Jerome Glisse.
   5 *
   6 * Permission is hereby granted, free of charge, to any person obtaining a
   7 * copy of this software and associated documentation files (the "Software"),
   8 * to deal in the Software without restriction, including without limitation
   9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10 * and/or sell copies of the Software, and to permit persons to whom the
  11 * Software is furnished to do so, subject to the following conditions:
  12 *
  13 * The above copyright notice and this permission notice shall be included in
  14 * all copies or substantial portions of the Software.
  15 *
  16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22 * OTHER DEALINGS IN THE SOFTWARE.
  23 *
  24 */
  25
  26#include <linux/kthread.h>
  27#include <linux/pci.h>
  28#include <linux/uaccess.h>
  29#include <linux/pm_runtime.h>
  30
  31#include "amdgpu.h"
  32#include "amdgpu_pm.h"
  33#include "amdgpu_dm_debugfs.h"
  34#include "amdgpu_ras.h"
  35#include "amdgpu_rap.h"
  36#include "amdgpu_securedisplay.h"
  37#include "amdgpu_fw_attestation.h"
  38#include "amdgpu_umr.h"
  39
  40#include "amdgpu_reset.h"
  41#include "amdgpu_psp_ta.h"
  42
  43#if defined(CONFIG_DEBUG_FS)
  44
  45/**
  46 * amdgpu_debugfs_process_reg_op - Handle MMIO register reads/writes
  47 *
  48 * @read: True if reading
  49 * @f: open file handle
  50 * @buf: User buffer to write/read to
  51 * @size: Number of bytes to write/read
  52 * @pos:  Offset to seek to
  53 *
  54 * This debugfs entry has special meaning on the offset being sought.
  55 * Various bits have different meanings:
  56 *
  57 * Bit 62:  Indicates a GRBM bank switch is needed
  58 * Bit 61:  Indicates a SRBM bank switch is needed (implies bit 62 is
  59 *	    zero)
  60 * Bits 24..33: The SE or ME selector if needed
  61 * Bits 34..43: The SH (or SA) or PIPE selector if needed
  62 * Bits 44..53: The INSTANCE (or CU/WGP) or QUEUE selector if needed
  63 *
  64 * Bit 23:  Indicates that the PM power gating lock should be held
  65 *	    This is necessary to read registers that might be
  66 *	    unreliable during a power gating transistion.
  67 *
  68 * The lower bits are the BYTE offset of the register to read.  This
  69 * allows reading multiple registers in a single call and having
  70 * the returned size reflect that.
  71 */
  72static int  amdgpu_debugfs_process_reg_op(bool read, struct file *f,
  73		char __user *buf, size_t size, loff_t *pos)
  74{
  75	struct amdgpu_device *adev = file_inode(f)->i_private;
  76	ssize_t result = 0;
  77	int r;
  78	bool pm_pg_lock, use_bank, use_ring;
  79	unsigned int instance_bank, sh_bank, se_bank, me, pipe, queue, vmid;
  80
  81	pm_pg_lock = use_bank = use_ring = false;
  82	instance_bank = sh_bank = se_bank = me = pipe = queue = vmid = 0;
  83
  84	if (size & 0x3 || *pos & 0x3 ||
  85			((*pos & (1ULL << 62)) && (*pos & (1ULL << 61))))
  86		return -EINVAL;
  87
  88	/* are we reading registers for which a PG lock is necessary? */
  89	pm_pg_lock = (*pos >> 23) & 1;
  90
  91	if (*pos & (1ULL << 62)) {
  92		se_bank = (*pos & GENMASK_ULL(33, 24)) >> 24;
  93		sh_bank = (*pos & GENMASK_ULL(43, 34)) >> 34;
  94		instance_bank = (*pos & GENMASK_ULL(53, 44)) >> 44;
  95
  96		if (se_bank == 0x3FF)
  97			se_bank = 0xFFFFFFFF;
  98		if (sh_bank == 0x3FF)
  99			sh_bank = 0xFFFFFFFF;
 100		if (instance_bank == 0x3FF)
 101			instance_bank = 0xFFFFFFFF;
 102		use_bank = true;
 103	} else if (*pos & (1ULL << 61)) {
 104
 105		me = (*pos & GENMASK_ULL(33, 24)) >> 24;
 106		pipe = (*pos & GENMASK_ULL(43, 34)) >> 34;
 107		queue = (*pos & GENMASK_ULL(53, 44)) >> 44;
 108		vmid = (*pos & GENMASK_ULL(58, 54)) >> 54;
 109
 110		use_ring = true;
 111	} else {
 112		use_bank = use_ring = false;
 113	}
 114
 115	*pos &= (1UL << 22) - 1;
 116
 117	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
 118	if (r < 0) {
 119		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 120		return r;
 121	}
 122
 123	r = amdgpu_virt_enable_access_debugfs(adev);
 124	if (r < 0) {
 125		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 126		return r;
 127	}
 128
 129	if (use_bank) {
 130		if ((sh_bank != 0xFFFFFFFF && sh_bank >= adev->gfx.config.max_sh_per_se) ||
 131		    (se_bank != 0xFFFFFFFF && se_bank >= adev->gfx.config.max_shader_engines)) {
 132			pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 133			pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 134			amdgpu_virt_disable_access_debugfs(adev);
 135			return -EINVAL;
 136		}
 137		mutex_lock(&adev->grbm_idx_mutex);
 138		amdgpu_gfx_select_se_sh(adev, se_bank,
 139					sh_bank, instance_bank, 0);
 140	} else if (use_ring) {
 141		mutex_lock(&adev->srbm_mutex);
 142		amdgpu_gfx_select_me_pipe_q(adev, me, pipe, queue, vmid, 0);
 143	}
 144
 145	if (pm_pg_lock)
 146		mutex_lock(&adev->pm.mutex);
 147
 148	while (size) {
 149		uint32_t value;
 150
 151		if (read) {
 152			value = RREG32(*pos >> 2);
 153			r = put_user(value, (uint32_t *)buf);
 154		} else {
 155			r = get_user(value, (uint32_t *)buf);
 156			if (!r)
 157				amdgpu_mm_wreg_mmio_rlc(adev, *pos >> 2, value, 0);
 158		}
 159		if (r) {
 160			result = r;
 161			goto end;
 162		}
 163
 164		result += 4;
 165		buf += 4;
 166		*pos += 4;
 167		size -= 4;
 168	}
 169
 170end:
 171	if (use_bank) {
 172		amdgpu_gfx_select_se_sh(adev, 0xffffffff, 0xffffffff, 0xffffffff, 0);
 173		mutex_unlock(&adev->grbm_idx_mutex);
 174	} else if (use_ring) {
 175		amdgpu_gfx_select_me_pipe_q(adev, 0, 0, 0, 0, 0);
 176		mutex_unlock(&adev->srbm_mutex);
 177	}
 178
 179	if (pm_pg_lock)
 180		mutex_unlock(&adev->pm.mutex);
 181
 182	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 183	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 184
 185	amdgpu_virt_disable_access_debugfs(adev);
 186	return result;
 187}
 188
 189/*
 190 * amdgpu_debugfs_regs_read - Callback for reading MMIO registers
 191 */
 192static ssize_t amdgpu_debugfs_regs_read(struct file *f, char __user *buf,
 193					size_t size, loff_t *pos)
 194{
 195	return amdgpu_debugfs_process_reg_op(true, f, buf, size, pos);
 196}
 197
 198/*
 199 * amdgpu_debugfs_regs_write - Callback for writing MMIO registers
 200 */
 201static ssize_t amdgpu_debugfs_regs_write(struct file *f, const char __user *buf,
 202					 size_t size, loff_t *pos)
 203{
 204	return amdgpu_debugfs_process_reg_op(false, f, (char __user *)buf, size, pos);
 205}
 206
 207static int amdgpu_debugfs_regs2_open(struct inode *inode, struct file *file)
 208{
 209	struct amdgpu_debugfs_regs2_data *rd;
 210
 211	rd = kzalloc(sizeof(*rd), GFP_KERNEL);
 212	if (!rd)
 213		return -ENOMEM;
 214	rd->adev = file_inode(file)->i_private;
 215	file->private_data = rd;
 216	mutex_init(&rd->lock);
 217
 218	return 0;
 219}
 220
 221static int amdgpu_debugfs_regs2_release(struct inode *inode, struct file *file)
 222{
 223	struct amdgpu_debugfs_regs2_data *rd = file->private_data;
 224
 225	mutex_destroy(&rd->lock);
 226	kfree(file->private_data);
 227	return 0;
 228}
 229
 230static ssize_t amdgpu_debugfs_regs2_op(struct file *f, char __user *buf, u32 offset, size_t size, int write_en)
 231{
 232	struct amdgpu_debugfs_regs2_data *rd = f->private_data;
 233	struct amdgpu_device *adev = rd->adev;
 234	ssize_t result = 0;
 235	int r;
 236	uint32_t value;
 237
 238	if (size & 0x3 || offset & 0x3)
 239		return -EINVAL;
 240
 241	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
 242	if (r < 0) {
 243		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 244		return r;
 245	}
 246
 247	r = amdgpu_virt_enable_access_debugfs(adev);
 248	if (r < 0) {
 249		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 250		return r;
 251	}
 252
 253	mutex_lock(&rd->lock);
 254
 255	if (rd->id.use_grbm) {
 256		if ((rd->id.grbm.sh != 0xFFFFFFFF && rd->id.grbm.sh >= adev->gfx.config.max_sh_per_se) ||
 257		    (rd->id.grbm.se != 0xFFFFFFFF && rd->id.grbm.se >= adev->gfx.config.max_shader_engines)) {
 258			pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 259			pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 260			amdgpu_virt_disable_access_debugfs(adev);
 261			mutex_unlock(&rd->lock);
 262			return -EINVAL;
 263		}
 264		mutex_lock(&adev->grbm_idx_mutex);
 265		amdgpu_gfx_select_se_sh(adev, rd->id.grbm.se,
 266						  rd->id.grbm.sh,
 267						  rd->id.grbm.instance, rd->id.xcc_id);
 268	}
 269
 270	if (rd->id.use_srbm) {
 271		mutex_lock(&adev->srbm_mutex);
 272		amdgpu_gfx_select_me_pipe_q(adev, rd->id.srbm.me, rd->id.srbm.pipe,
 273					    rd->id.srbm.queue, rd->id.srbm.vmid, rd->id.xcc_id);
 274	}
 275
 276	if (rd->id.pg_lock)
 277		mutex_lock(&adev->pm.mutex);
 278
 279	while (size) {
 280		if (!write_en) {
 281			value = RREG32(offset >> 2);
 282			r = put_user(value, (uint32_t *)buf);
 283		} else {
 284			r = get_user(value, (uint32_t *)buf);
 285			if (!r)
 286				amdgpu_mm_wreg_mmio_rlc(adev, offset >> 2, value, rd->id.xcc_id);
 287		}
 288		if (r) {
 289			result = r;
 290			goto end;
 291		}
 292		offset += 4;
 293		size -= 4;
 294		result += 4;
 295		buf += 4;
 296	}
 297end:
 298	if (rd->id.use_grbm) {
 299		amdgpu_gfx_select_se_sh(adev, 0xffffffff, 0xffffffff, 0xffffffff, rd->id.xcc_id);
 300		mutex_unlock(&adev->grbm_idx_mutex);
 301	}
 302
 303	if (rd->id.use_srbm) {
 304		amdgpu_gfx_select_me_pipe_q(adev, 0, 0, 0, 0, rd->id.xcc_id);
 305		mutex_unlock(&adev->srbm_mutex);
 306	}
 307
 308	if (rd->id.pg_lock)
 309		mutex_unlock(&adev->pm.mutex);
 310
 311	mutex_unlock(&rd->lock);
 312
 313	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 314	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 315
 316	amdgpu_virt_disable_access_debugfs(adev);
 317	return result;
 318}
 319
 320static long amdgpu_debugfs_regs2_ioctl(struct file *f, unsigned int cmd, unsigned long data)
 321{
 322	struct amdgpu_debugfs_regs2_data *rd = f->private_data;
 323	struct amdgpu_debugfs_regs2_iocdata v1_data;
 324	int r;
 325
 326	mutex_lock(&rd->lock);
 327
 328	switch (cmd) {
 329	case AMDGPU_DEBUGFS_REGS2_IOC_SET_STATE_V2:
 330		r = copy_from_user(&rd->id, (struct amdgpu_debugfs_regs2_iocdata_v2 *)data,
 331				   sizeof(rd->id));
 332		if (r)
 333			r = -EINVAL;
 334		goto done;
 335	case AMDGPU_DEBUGFS_REGS2_IOC_SET_STATE:
 336		r = copy_from_user(&v1_data, (struct amdgpu_debugfs_regs2_iocdata *)data,
 337				   sizeof(v1_data));
 338		if (r) {
 339			r = -EINVAL;
 340			goto done;
 341		}
 342		goto v1_copy;
 343	default:
 344		r = -EINVAL;
 345		goto done;
 346	}
 347
 348v1_copy:
 349	rd->id.use_srbm = v1_data.use_srbm;
 350	rd->id.use_grbm = v1_data.use_grbm;
 351	rd->id.pg_lock = v1_data.pg_lock;
 352	rd->id.grbm.se = v1_data.grbm.se;
 353	rd->id.grbm.sh = v1_data.grbm.sh;
 354	rd->id.grbm.instance = v1_data.grbm.instance;
 355	rd->id.srbm.me = v1_data.srbm.me;
 356	rd->id.srbm.pipe = v1_data.srbm.pipe;
 357	rd->id.srbm.queue = v1_data.srbm.queue;
 358	rd->id.xcc_id = 0;
 359done:
 360	mutex_unlock(&rd->lock);
 361	return r;
 362}
 363
 364static ssize_t amdgpu_debugfs_regs2_read(struct file *f, char __user *buf, size_t size, loff_t *pos)
 365{
 366	return amdgpu_debugfs_regs2_op(f, buf, *pos, size, 0);
 367}
 368
 369static ssize_t amdgpu_debugfs_regs2_write(struct file *f, const char __user *buf, size_t size, loff_t *pos)
 370{
 371	return amdgpu_debugfs_regs2_op(f, (char __user *)buf, *pos, size, 1);
 372}
 373
 374static int amdgpu_debugfs_gprwave_open(struct inode *inode, struct file *file)
 375{
 376	struct amdgpu_debugfs_gprwave_data *rd;
 377
 378	rd = kzalloc(sizeof(*rd), GFP_KERNEL);
 379	if (!rd)
 380		return -ENOMEM;
 381	rd->adev = file_inode(file)->i_private;
 382	file->private_data = rd;
 383	mutex_init(&rd->lock);
 384
 385	return 0;
 386}
 387
 388static int amdgpu_debugfs_gprwave_release(struct inode *inode, struct file *file)
 389{
 390	struct amdgpu_debugfs_gprwave_data *rd = file->private_data;
 391
 392	mutex_destroy(&rd->lock);
 393	kfree(file->private_data);
 394	return 0;
 395}
 396
 397static ssize_t amdgpu_debugfs_gprwave_read(struct file *f, char __user *buf, size_t size, loff_t *pos)
 398{
 399	struct amdgpu_debugfs_gprwave_data *rd = f->private_data;
 400	struct amdgpu_device *adev = rd->adev;
 401	ssize_t result = 0;
 402	int r;
 403	uint32_t *data, x;
 404
 405	if (size & 0x3 || *pos & 0x3)
 406		return -EINVAL;
 407
 408	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
 409	if (r < 0) {
 410		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 411		return r;
 412	}
 413
 414	r = amdgpu_virt_enable_access_debugfs(adev);
 415	if (r < 0) {
 416		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 417		return r;
 418	}
 419
 420	data = kcalloc(1024, sizeof(*data), GFP_KERNEL);
 421	if (!data) {
 422		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 423		amdgpu_virt_disable_access_debugfs(adev);
 424		return -ENOMEM;
 425	}
 426
 427	/* switch to the specific se/sh/cu */
 428	mutex_lock(&adev->grbm_idx_mutex);
 429	amdgpu_gfx_select_se_sh(adev, rd->id.se, rd->id.sh, rd->id.cu, rd->id.xcc_id);
 430
 431	if (!rd->id.gpr_or_wave) {
 432		x = 0;
 433		if (adev->gfx.funcs->read_wave_data)
 434			adev->gfx.funcs->read_wave_data(adev, rd->id.xcc_id, rd->id.simd, rd->id.wave, data, &x);
 435	} else {
 436		x = size >> 2;
 437		if (rd->id.gpr.vpgr_or_sgpr) {
 438			if (adev->gfx.funcs->read_wave_vgprs)
 439				adev->gfx.funcs->read_wave_vgprs(adev, rd->id.xcc_id, rd->id.simd, rd->id.wave, rd->id.gpr.thread, *pos, size>>2, data);
 440		} else {
 441			if (adev->gfx.funcs->read_wave_sgprs)
 442				adev->gfx.funcs->read_wave_sgprs(adev, rd->id.xcc_id, rd->id.simd, rd->id.wave, *pos, size>>2, data);
 443		}
 444	}
 445
 446	amdgpu_gfx_select_se_sh(adev, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, rd->id.xcc_id);
 447	mutex_unlock(&adev->grbm_idx_mutex);
 448
 449	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 450	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 451
 452	if (!x) {
 453		result = -EINVAL;
 454		goto done;
 455	}
 456
 457	while (size && (*pos < x * 4)) {
 458		uint32_t value;
 459
 460		value = data[*pos >> 2];
 461		r = put_user(value, (uint32_t *)buf);
 462		if (r) {
 463			result = r;
 464			goto done;
 465		}
 466
 467		result += 4;
 468		buf += 4;
 469		*pos += 4;
 470		size -= 4;
 471	}
 472
 473done:
 474	amdgpu_virt_disable_access_debugfs(adev);
 475	kfree(data);
 476	return result;
 477}
 478
 479static long amdgpu_debugfs_gprwave_ioctl(struct file *f, unsigned int cmd, unsigned long data)
 480{
 481	struct amdgpu_debugfs_gprwave_data *rd = f->private_data;
 482	int r = 0;
 483
 484	mutex_lock(&rd->lock);
 485
 486	switch (cmd) {
 487	case AMDGPU_DEBUGFS_GPRWAVE_IOC_SET_STATE:
 488		if (copy_from_user(&rd->id,
 489				   (struct amdgpu_debugfs_gprwave_iocdata *)data,
 490				   sizeof(rd->id)))
 491			r = -EFAULT;
 492		goto done;
 493	default:
 494		r = -EINVAL;
 495		goto done;
 496	}
 497
 498done:
 499	mutex_unlock(&rd->lock);
 500	return r;
 501}
 502
 503
 504
 505
 506/**
 507 * amdgpu_debugfs_regs_pcie_read - Read from a PCIE register
 508 *
 509 * @f: open file handle
 510 * @buf: User buffer to store read data in
 511 * @size: Number of bytes to read
 512 * @pos:  Offset to seek to
 513 *
 514 * The lower bits are the BYTE offset of the register to read.  This
 515 * allows reading multiple registers in a single call and having
 516 * the returned size reflect that.
 517 */
 518static ssize_t amdgpu_debugfs_regs_pcie_read(struct file *f, char __user *buf,
 519					size_t size, loff_t *pos)
 520{
 521	struct amdgpu_device *adev = file_inode(f)->i_private;
 522	ssize_t result = 0;
 523	int r;
 524
 525	if (size & 0x3 || *pos & 0x3)
 526		return -EINVAL;
 527
 528	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
 529	if (r < 0) {
 530		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 531		return r;
 532	}
 533
 534	r = amdgpu_virt_enable_access_debugfs(adev);
 535	if (r < 0) {
 536		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 537		return r;
 538	}
 539
 540	while (size) {
 541		uint32_t value;
 542
 543		if (upper_32_bits(*pos))
 544			value = RREG32_PCIE_EXT(*pos);
 545		else
 546			value = RREG32_PCIE(*pos);
 547
 548		r = put_user(value, (uint32_t *)buf);
 549		if (r)
 550			goto out;
 551
 552		result += 4;
 553		buf += 4;
 554		*pos += 4;
 555		size -= 4;
 556	}
 557
 558	r = result;
 559out:
 560	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 561	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 562	amdgpu_virt_disable_access_debugfs(adev);
 563	return r;
 564}
 565
 566/**
 567 * amdgpu_debugfs_regs_pcie_write - Write to a PCIE register
 568 *
 569 * @f: open file handle
 570 * @buf: User buffer to write data from
 571 * @size: Number of bytes to write
 572 * @pos:  Offset to seek to
 573 *
 574 * The lower bits are the BYTE offset of the register to write.  This
 575 * allows writing multiple registers in a single call and having
 576 * the returned size reflect that.
 577 */
 578static ssize_t amdgpu_debugfs_regs_pcie_write(struct file *f, const char __user *buf,
 579					 size_t size, loff_t *pos)
 580{
 581	struct amdgpu_device *adev = file_inode(f)->i_private;
 582	ssize_t result = 0;
 583	int r;
 584
 585	if (size & 0x3 || *pos & 0x3)
 586		return -EINVAL;
 587
 588	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
 589	if (r < 0) {
 590		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 591		return r;
 592	}
 593
 594	r = amdgpu_virt_enable_access_debugfs(adev);
 595	if (r < 0) {
 596		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 597		return r;
 598	}
 599
 600	while (size) {
 601		uint32_t value;
 602
 603		r = get_user(value, (uint32_t *)buf);
 604		if (r)
 605			goto out;
 606
 607		if (upper_32_bits(*pos))
 608			WREG32_PCIE_EXT(*pos, value);
 609		else
 610			WREG32_PCIE(*pos, value);
 611
 612		result += 4;
 613		buf += 4;
 614		*pos += 4;
 615		size -= 4;
 616	}
 617
 618	r = result;
 619out:
 620	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 621	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 622	amdgpu_virt_disable_access_debugfs(adev);
 623	return r;
 624}
 625
 626/**
 627 * amdgpu_debugfs_regs_didt_read - Read from a DIDT register
 628 *
 629 * @f: open file handle
 630 * @buf: User buffer to store read data in
 631 * @size: Number of bytes to read
 632 * @pos:  Offset to seek to
 633 *
 634 * The lower bits are the BYTE offset of the register to read.  This
 635 * allows reading multiple registers in a single call and having
 636 * the returned size reflect that.
 637 */
 638static ssize_t amdgpu_debugfs_regs_didt_read(struct file *f, char __user *buf,
 639					size_t size, loff_t *pos)
 640{
 641	struct amdgpu_device *adev = file_inode(f)->i_private;
 642	ssize_t result = 0;
 643	int r;
 644
 645	if (size & 0x3 || *pos & 0x3)
 646		return -EINVAL;
 647
 648	if (!adev->didt_rreg)
 649		return -EOPNOTSUPP;
 650
 651	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
 652	if (r < 0) {
 653		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 654		return r;
 655	}
 656
 657	r = amdgpu_virt_enable_access_debugfs(adev);
 658	if (r < 0) {
 659		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 660		return r;
 661	}
 662
 663	while (size) {
 664		uint32_t value;
 665
 666		value = RREG32_DIDT(*pos >> 2);
 667		r = put_user(value, (uint32_t *)buf);
 668		if (r)
 669			goto out;
 670
 671		result += 4;
 672		buf += 4;
 673		*pos += 4;
 674		size -= 4;
 675	}
 676
 677	r = result;
 678out:
 679	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 680	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 681	amdgpu_virt_disable_access_debugfs(adev);
 682	return r;
 683}
 684
 685/**
 686 * amdgpu_debugfs_regs_didt_write - Write to a DIDT register
 687 *
 688 * @f: open file handle
 689 * @buf: User buffer to write data from
 690 * @size: Number of bytes to write
 691 * @pos:  Offset to seek to
 692 *
 693 * The lower bits are the BYTE offset of the register to write.  This
 694 * allows writing multiple registers in a single call and having
 695 * the returned size reflect that.
 696 */
 697static ssize_t amdgpu_debugfs_regs_didt_write(struct file *f, const char __user *buf,
 698					 size_t size, loff_t *pos)
 699{
 700	struct amdgpu_device *adev = file_inode(f)->i_private;
 701	ssize_t result = 0;
 702	int r;
 703
 704	if (size & 0x3 || *pos & 0x3)
 705		return -EINVAL;
 706
 707	if (!adev->didt_wreg)
 708		return -EOPNOTSUPP;
 709
 710	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
 711	if (r < 0) {
 712		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 713		return r;
 714	}
 715
 716	r = amdgpu_virt_enable_access_debugfs(adev);
 717	if (r < 0) {
 718		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 719		return r;
 720	}
 721
 722	while (size) {
 723		uint32_t value;
 724
 725		r = get_user(value, (uint32_t *)buf);
 726		if (r)
 727			goto out;
 728
 729		WREG32_DIDT(*pos >> 2, value);
 730
 731		result += 4;
 732		buf += 4;
 733		*pos += 4;
 734		size -= 4;
 735	}
 736
 737	r = result;
 738out:
 739	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 740	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 741	amdgpu_virt_disable_access_debugfs(adev);
 742	return r;
 743}
 744
 745/**
 746 * amdgpu_debugfs_regs_smc_read - Read from a SMC register
 747 *
 748 * @f: open file handle
 749 * @buf: User buffer to store read data in
 750 * @size: Number of bytes to read
 751 * @pos:  Offset to seek to
 752 *
 753 * The lower bits are the BYTE offset of the register to read.  This
 754 * allows reading multiple registers in a single call and having
 755 * the returned size reflect that.
 756 */
 757static ssize_t amdgpu_debugfs_regs_smc_read(struct file *f, char __user *buf,
 758					size_t size, loff_t *pos)
 759{
 760	struct amdgpu_device *adev = file_inode(f)->i_private;
 761	ssize_t result = 0;
 762	int r;
 763
 764	if (!adev->smc_rreg)
 765		return -EOPNOTSUPP;
 766
 767	if (size & 0x3 || *pos & 0x3)
 768		return -EINVAL;
 769
 770	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
 771	if (r < 0) {
 772		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 773		return r;
 774	}
 775
 776	r = amdgpu_virt_enable_access_debugfs(adev);
 777	if (r < 0) {
 778		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 779		return r;
 780	}
 781
 782	while (size) {
 783		uint32_t value;
 784
 785		value = RREG32_SMC(*pos);
 786		r = put_user(value, (uint32_t *)buf);
 787		if (r)
 788			goto out;
 789
 790		result += 4;
 791		buf += 4;
 792		*pos += 4;
 793		size -= 4;
 794	}
 795
 796	r = result;
 797out:
 798	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 799	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 800	amdgpu_virt_disable_access_debugfs(adev);
 801	return r;
 802}
 803
 804/**
 805 * amdgpu_debugfs_regs_smc_write - Write to a SMC register
 806 *
 807 * @f: open file handle
 808 * @buf: User buffer to write data from
 809 * @size: Number of bytes to write
 810 * @pos:  Offset to seek to
 811 *
 812 * The lower bits are the BYTE offset of the register to write.  This
 813 * allows writing multiple registers in a single call and having
 814 * the returned size reflect that.
 815 */
 816static ssize_t amdgpu_debugfs_regs_smc_write(struct file *f, const char __user *buf,
 817					 size_t size, loff_t *pos)
 818{
 819	struct amdgpu_device *adev = file_inode(f)->i_private;
 820	ssize_t result = 0;
 821	int r;
 822
 823	if (!adev->smc_wreg)
 824		return -EOPNOTSUPP;
 825
 826	if (size & 0x3 || *pos & 0x3)
 827		return -EINVAL;
 828
 829	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
 830	if (r < 0) {
 831		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 832		return r;
 833	}
 834
 835	r = amdgpu_virt_enable_access_debugfs(adev);
 836	if (r < 0) {
 837		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 838		return r;
 839	}
 840
 841	while (size) {
 842		uint32_t value;
 843
 844		r = get_user(value, (uint32_t *)buf);
 845		if (r)
 846			goto out;
 847
 848		WREG32_SMC(*pos, value);
 849
 850		result += 4;
 851		buf += 4;
 852		*pos += 4;
 853		size -= 4;
 854	}
 855
 856	r = result;
 857out:
 858	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 859	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 860	amdgpu_virt_disable_access_debugfs(adev);
 861	return r;
 862}
 863
 864/**
 865 * amdgpu_debugfs_gca_config_read - Read from gfx config data
 866 *
 867 * @f: open file handle
 868 * @buf: User buffer to store read data in
 869 * @size: Number of bytes to read
 870 * @pos:  Offset to seek to
 871 *
 872 * This file is used to access configuration data in a somewhat
 873 * stable fashion.  The format is a series of DWORDs with the first
 874 * indicating which revision it is.  New content is appended to the
 875 * end so that older software can still read the data.
 876 */
 877
 878static ssize_t amdgpu_debugfs_gca_config_read(struct file *f, char __user *buf,
 879					size_t size, loff_t *pos)
 880{
 881	struct amdgpu_device *adev = file_inode(f)->i_private;
 882	ssize_t result = 0;
 883	int r;
 884	uint32_t *config, no_regs = 0;
 885
 886	if (size & 0x3 || *pos & 0x3)
 887		return -EINVAL;
 888
 889	config = kmalloc_array(256, sizeof(*config), GFP_KERNEL);
 890	if (!config)
 891		return -ENOMEM;
 892
 893	/* version, increment each time something is added */
 894	config[no_regs++] = 5;
 895	config[no_regs++] = adev->gfx.config.max_shader_engines;
 896	config[no_regs++] = adev->gfx.config.max_tile_pipes;
 897	config[no_regs++] = adev->gfx.config.max_cu_per_sh;
 898	config[no_regs++] = adev->gfx.config.max_sh_per_se;
 899	config[no_regs++] = adev->gfx.config.max_backends_per_se;
 900	config[no_regs++] = adev->gfx.config.max_texture_channel_caches;
 901	config[no_regs++] = adev->gfx.config.max_gprs;
 902	config[no_regs++] = adev->gfx.config.max_gs_threads;
 903	config[no_regs++] = adev->gfx.config.max_hw_contexts;
 904	config[no_regs++] = adev->gfx.config.sc_prim_fifo_size_frontend;
 905	config[no_regs++] = adev->gfx.config.sc_prim_fifo_size_backend;
 906	config[no_regs++] = adev->gfx.config.sc_hiz_tile_fifo_size;
 907	config[no_regs++] = adev->gfx.config.sc_earlyz_tile_fifo_size;
 908	config[no_regs++] = adev->gfx.config.num_tile_pipes;
 909	config[no_regs++] = adev->gfx.config.backend_enable_mask;
 910	config[no_regs++] = adev->gfx.config.mem_max_burst_length_bytes;
 911	config[no_regs++] = adev->gfx.config.mem_row_size_in_kb;
 912	config[no_regs++] = adev->gfx.config.shader_engine_tile_size;
 913	config[no_regs++] = adev->gfx.config.num_gpus;
 914	config[no_regs++] = adev->gfx.config.multi_gpu_tile_size;
 915	config[no_regs++] = adev->gfx.config.mc_arb_ramcfg;
 916	config[no_regs++] = adev->gfx.config.gb_addr_config;
 917	config[no_regs++] = adev->gfx.config.num_rbs;
 918
 919	/* rev==1 */
 920	config[no_regs++] = adev->rev_id;
 921	config[no_regs++] = lower_32_bits(adev->pg_flags);
 922	config[no_regs++] = lower_32_bits(adev->cg_flags);
 923
 924	/* rev==2 */
 925	config[no_regs++] = adev->family;
 926	config[no_regs++] = adev->external_rev_id;
 927
 928	/* rev==3 */
 929	config[no_regs++] = adev->pdev->device;
 930	config[no_regs++] = adev->pdev->revision;
 931	config[no_regs++] = adev->pdev->subsystem_device;
 932	config[no_regs++] = adev->pdev->subsystem_vendor;
 933
 934	/* rev==4 APU flag */
 935	config[no_regs++] = adev->flags & AMD_IS_APU ? 1 : 0;
 936
 937	/* rev==5 PG/CG flag upper 32bit */
 938	config[no_regs++] = upper_32_bits(adev->pg_flags);
 939	config[no_regs++] = upper_32_bits(adev->cg_flags);
 940
 941	while (size && (*pos < no_regs * 4)) {
 942		uint32_t value;
 943
 944		value = config[*pos >> 2];
 945		r = put_user(value, (uint32_t *)buf);
 946		if (r) {
 947			kfree(config);
 948			return r;
 949		}
 950
 951		result += 4;
 952		buf += 4;
 953		*pos += 4;
 954		size -= 4;
 955	}
 956
 957	kfree(config);
 958	return result;
 959}
 960
 961/**
 962 * amdgpu_debugfs_sensor_read - Read from the powerplay sensors
 963 *
 964 * @f: open file handle
 965 * @buf: User buffer to store read data in
 966 * @size: Number of bytes to read
 967 * @pos:  Offset to seek to
 968 *
 969 * The offset is treated as the BYTE address of one of the sensors
 970 * enumerated in amd/include/kgd_pp_interface.h under the
 971 * 'amd_pp_sensors' enumeration.  For instance to read the UVD VCLK
 972 * you would use the offset 3 * 4 = 12.
 973 */
 974static ssize_t amdgpu_debugfs_sensor_read(struct file *f, char __user *buf,
 975					size_t size, loff_t *pos)
 976{
 977	struct amdgpu_device *adev = file_inode(f)->i_private;
 978	int idx, x, outsize, r, valuesize;
 979	uint32_t values[16];
 980
 981	if (size & 3 || *pos & 0x3)
 982		return -EINVAL;
 983
 984	if (!adev->pm.dpm_enabled)
 985		return -EINVAL;
 986
 987	/* convert offset to sensor number */
 988	idx = *pos >> 2;
 989
 990	valuesize = sizeof(values);
 991
 992	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
 993	if (r < 0) {
 994		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
 995		return r;
 996	}
 997
 998	r = amdgpu_virt_enable_access_debugfs(adev);
 999	if (r < 0) {
1000		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1001		return r;
1002	}
1003
1004	r = amdgpu_dpm_read_sensor(adev, idx, &values[0], &valuesize);
1005
1006	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
1007	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1008
1009	if (r) {
1010		amdgpu_virt_disable_access_debugfs(adev);
1011		return r;
1012	}
1013
1014	if (size > valuesize) {
1015		amdgpu_virt_disable_access_debugfs(adev);
1016		return -EINVAL;
1017	}
1018
1019	outsize = 0;
1020	x = 0;
1021	if (!r) {
1022		while (size) {
1023			r = put_user(values[x++], (int32_t *)buf);
1024			buf += 4;
1025			size -= 4;
1026			outsize += 4;
1027		}
1028	}
1029
1030	amdgpu_virt_disable_access_debugfs(adev);
1031	return !r ? outsize : r;
1032}
1033
1034/** amdgpu_debugfs_wave_read - Read WAVE STATUS data
1035 *
1036 * @f: open file handle
1037 * @buf: User buffer to store read data in
1038 * @size: Number of bytes to read
1039 * @pos:  Offset to seek to
1040 *
1041 * The offset being sought changes which wave that the status data
1042 * will be returned for.  The bits are used as follows:
1043 *
1044 * Bits 0..6:	Byte offset into data
1045 * Bits 7..14:	SE selector
1046 * Bits 15..22:	SH/SA selector
1047 * Bits 23..30: CU/{WGP+SIMD} selector
1048 * Bits 31..36: WAVE ID selector
1049 * Bits 37..44: SIMD ID selector
1050 *
1051 * The returned data begins with one DWORD of version information
1052 * Followed by WAVE STATUS registers relevant to the GFX IP version
1053 * being used.  See gfx_v8_0_read_wave_data() for an example output.
1054 */
1055static ssize_t amdgpu_debugfs_wave_read(struct file *f, char __user *buf,
1056					size_t size, loff_t *pos)
1057{
1058	struct amdgpu_device *adev = f->f_inode->i_private;
1059	int r, x;
1060	ssize_t result = 0;
1061	uint32_t offset, se, sh, cu, wave, simd, data[32];
1062
1063	if (size & 3 || *pos & 3)
1064		return -EINVAL;
1065
1066	/* decode offset */
1067	offset = (*pos & GENMASK_ULL(6, 0));
1068	se = (*pos & GENMASK_ULL(14, 7)) >> 7;
1069	sh = (*pos & GENMASK_ULL(22, 15)) >> 15;
1070	cu = (*pos & GENMASK_ULL(30, 23)) >> 23;
1071	wave = (*pos & GENMASK_ULL(36, 31)) >> 31;
1072	simd = (*pos & GENMASK_ULL(44, 37)) >> 37;
1073
1074	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
1075	if (r < 0) {
1076		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1077		return r;
1078	}
1079
1080	r = amdgpu_virt_enable_access_debugfs(adev);
1081	if (r < 0) {
1082		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1083		return r;
1084	}
1085
1086	/* switch to the specific se/sh/cu */
1087	mutex_lock(&adev->grbm_idx_mutex);
1088	amdgpu_gfx_select_se_sh(adev, se, sh, cu, 0);
1089
1090	x = 0;
1091	if (adev->gfx.funcs->read_wave_data)
1092		adev->gfx.funcs->read_wave_data(adev, 0, simd, wave, data, &x);
1093
1094	amdgpu_gfx_select_se_sh(adev, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0);
1095	mutex_unlock(&adev->grbm_idx_mutex);
1096
1097	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
1098	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1099
1100	if (!x) {
1101		amdgpu_virt_disable_access_debugfs(adev);
1102		return -EINVAL;
1103	}
1104
1105	while (size && (offset < x * 4)) {
1106		uint32_t value;
1107
1108		value = data[offset >> 2];
1109		r = put_user(value, (uint32_t *)buf);
1110		if (r) {
1111			amdgpu_virt_disable_access_debugfs(adev);
1112			return r;
1113		}
1114
1115		result += 4;
1116		buf += 4;
1117		offset += 4;
1118		size -= 4;
1119	}
1120
1121	amdgpu_virt_disable_access_debugfs(adev);
1122	return result;
1123}
1124
1125/** amdgpu_debugfs_gpr_read - Read wave gprs
1126 *
1127 * @f: open file handle
1128 * @buf: User buffer to store read data in
1129 * @size: Number of bytes to read
1130 * @pos:  Offset to seek to
1131 *
1132 * The offset being sought changes which wave that the status data
1133 * will be returned for.  The bits are used as follows:
1134 *
1135 * Bits 0..11:	Byte offset into data
1136 * Bits 12..19:	SE selector
1137 * Bits 20..27:	SH/SA selector
1138 * Bits 28..35: CU/{WGP+SIMD} selector
1139 * Bits 36..43: WAVE ID selector
1140 * Bits 37..44: SIMD ID selector
1141 * Bits 52..59: Thread selector
1142 * Bits 60..61: Bank selector (VGPR=0,SGPR=1)
1143 *
1144 * The return data comes from the SGPR or VGPR register bank for
1145 * the selected operational unit.
1146 */
1147static ssize_t amdgpu_debugfs_gpr_read(struct file *f, char __user *buf,
1148					size_t size, loff_t *pos)
1149{
1150	struct amdgpu_device *adev = f->f_inode->i_private;
1151	int r;
1152	ssize_t result = 0;
1153	uint32_t offset, se, sh, cu, wave, simd, thread, bank, *data;
1154
1155	if (size > 4096 || size & 3 || *pos & 3)
1156		return -EINVAL;
1157
1158	/* decode offset */
1159	offset = (*pos & GENMASK_ULL(11, 0)) >> 2;
1160	se = (*pos & GENMASK_ULL(19, 12)) >> 12;
1161	sh = (*pos & GENMASK_ULL(27, 20)) >> 20;
1162	cu = (*pos & GENMASK_ULL(35, 28)) >> 28;
1163	wave = (*pos & GENMASK_ULL(43, 36)) >> 36;
1164	simd = (*pos & GENMASK_ULL(51, 44)) >> 44;
1165	thread = (*pos & GENMASK_ULL(59, 52)) >> 52;
1166	bank = (*pos & GENMASK_ULL(61, 60)) >> 60;
1167
1168	data = kcalloc(1024, sizeof(*data), GFP_KERNEL);
1169	if (!data)
1170		return -ENOMEM;
1171
1172	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
1173	if (r < 0)
1174		goto err;
1175
1176	r = amdgpu_virt_enable_access_debugfs(adev);
1177	if (r < 0)
1178		goto err;
1179
1180	/* switch to the specific se/sh/cu */
1181	mutex_lock(&adev->grbm_idx_mutex);
1182	amdgpu_gfx_select_se_sh(adev, se, sh, cu, 0);
1183
1184	if (bank == 0) {
1185		if (adev->gfx.funcs->read_wave_vgprs)
1186			adev->gfx.funcs->read_wave_vgprs(adev, 0, simd, wave, thread, offset, size>>2, data);
1187	} else {
1188		if (adev->gfx.funcs->read_wave_sgprs)
1189			adev->gfx.funcs->read_wave_sgprs(adev, 0, simd, wave, offset, size>>2, data);
1190	}
1191
1192	amdgpu_gfx_select_se_sh(adev, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0);
1193	mutex_unlock(&adev->grbm_idx_mutex);
1194
1195	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
1196	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1197
1198	while (size) {
1199		uint32_t value;
1200
1201		value = data[result >> 2];
1202		r = put_user(value, (uint32_t *)buf);
1203		if (r) {
1204			amdgpu_virt_disable_access_debugfs(adev);
1205			goto err;
1206		}
1207
1208		result += 4;
1209		buf += 4;
1210		size -= 4;
1211	}
1212
1213	kfree(data);
1214	amdgpu_virt_disable_access_debugfs(adev);
1215	return result;
1216
1217err:
1218	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1219	kfree(data);
1220	return r;
1221}
1222
1223/**
1224 * amdgpu_debugfs_gfxoff_residency_read - Read GFXOFF residency
1225 *
1226 * @f: open file handle
1227 * @buf: User buffer to store read data in
1228 * @size: Number of bytes to read
1229 * @pos:  Offset to seek to
1230 *
1231 * Read the last residency value logged. It doesn't auto update, one needs to
1232 * stop logging before getting the current value.
1233 */
1234static ssize_t amdgpu_debugfs_gfxoff_residency_read(struct file *f, char __user *buf,
1235						    size_t size, loff_t *pos)
1236{
1237	struct amdgpu_device *adev = file_inode(f)->i_private;
1238	ssize_t result = 0;
1239	int r;
1240
1241	if (size & 0x3 || *pos & 0x3)
1242		return -EINVAL;
1243
1244	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
1245	if (r < 0) {
1246		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1247		return r;
1248	}
1249
1250	while (size) {
1251		uint32_t value;
1252
1253		r = amdgpu_get_gfx_off_residency(adev, &value);
1254		if (r)
1255			goto out;
1256
1257		r = put_user(value, (uint32_t *)buf);
1258		if (r)
1259			goto out;
1260
1261		result += 4;
1262		buf += 4;
1263		*pos += 4;
1264		size -= 4;
1265	}
1266
1267	r = result;
1268out:
1269	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
1270	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1271
1272	return r;
1273}
1274
1275/**
1276 * amdgpu_debugfs_gfxoff_residency_write - Log GFXOFF Residency
1277 *
1278 * @f: open file handle
1279 * @buf: User buffer to write data from
1280 * @size: Number of bytes to write
1281 * @pos:  Offset to seek to
1282 *
1283 * Write a 32-bit non-zero to start logging; write a 32-bit zero to stop
1284 */
1285static ssize_t amdgpu_debugfs_gfxoff_residency_write(struct file *f, const char __user *buf,
1286						     size_t size, loff_t *pos)
1287{
1288	struct amdgpu_device *adev = file_inode(f)->i_private;
1289	ssize_t result = 0;
1290	int r;
1291
1292	if (size & 0x3 || *pos & 0x3)
1293		return -EINVAL;
1294
1295	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
1296	if (r < 0) {
1297		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1298		return r;
1299	}
1300
1301	while (size) {
1302		u32 value;
1303
1304		r = get_user(value, (uint32_t *)buf);
1305		if (r)
1306			goto out;
1307
1308		amdgpu_set_gfx_off_residency(adev, value ? true : false);
1309
1310		result += 4;
1311		buf += 4;
1312		*pos += 4;
1313		size -= 4;
1314	}
1315
1316	r = result;
1317out:
1318	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
1319	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1320
1321	return r;
1322}
1323
1324
1325/**
1326 * amdgpu_debugfs_gfxoff_count_read - Read GFXOFF entry count
1327 *
1328 * @f: open file handle
1329 * @buf: User buffer to store read data in
1330 * @size: Number of bytes to read
1331 * @pos:  Offset to seek to
1332 */
1333static ssize_t amdgpu_debugfs_gfxoff_count_read(struct file *f, char __user *buf,
1334						size_t size, loff_t *pos)
1335{
1336	struct amdgpu_device *adev = file_inode(f)->i_private;
1337	ssize_t result = 0;
1338	int r;
1339
1340	if (size & 0x3 || *pos & 0x3)
1341		return -EINVAL;
1342
1343	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
1344	if (r < 0) {
1345		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1346		return r;
1347	}
1348
1349	while (size) {
1350		u64 value = 0;
1351
1352		r = amdgpu_get_gfx_off_entrycount(adev, &value);
1353		if (r)
1354			goto out;
1355
1356		r = put_user(value, (u64 *)buf);
1357		if (r)
1358			goto out;
1359
1360		result += 4;
1361		buf += 4;
1362		*pos += 4;
1363		size -= 4;
1364	}
1365
1366	r = result;
1367out:
1368	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
1369	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1370
1371	return r;
1372}
1373
1374/**
1375 * amdgpu_debugfs_gfxoff_write - Enable/disable GFXOFF
1376 *
1377 * @f: open file handle
1378 * @buf: User buffer to write data from
1379 * @size: Number of bytes to write
1380 * @pos:  Offset to seek to
1381 *
1382 * Write a 32-bit zero to disable or a 32-bit non-zero to enable
1383 */
1384static ssize_t amdgpu_debugfs_gfxoff_write(struct file *f, const char __user *buf,
1385					 size_t size, loff_t *pos)
1386{
1387	struct amdgpu_device *adev = file_inode(f)->i_private;
1388	ssize_t result = 0;
1389	int r;
1390
1391	if (size & 0x3 || *pos & 0x3)
1392		return -EINVAL;
1393
1394	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
1395	if (r < 0) {
1396		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1397		return r;
1398	}
1399
1400	while (size) {
1401		uint32_t value;
1402
1403		r = get_user(value, (uint32_t *)buf);
1404		if (r)
1405			goto out;
1406
1407		amdgpu_gfx_off_ctrl(adev, value ? true : false);
1408
1409		result += 4;
1410		buf += 4;
1411		*pos += 4;
1412		size -= 4;
1413	}
1414
1415	r = result;
1416out:
1417	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
1418	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1419
1420	return r;
1421}
1422
1423
1424/**
1425 * amdgpu_debugfs_gfxoff_read - read gfxoff status
1426 *
1427 * @f: open file handle
1428 * @buf: User buffer to store read data in
1429 * @size: Number of bytes to read
1430 * @pos:  Offset to seek to
1431 */
1432static ssize_t amdgpu_debugfs_gfxoff_read(struct file *f, char __user *buf,
1433					 size_t size, loff_t *pos)
1434{
1435	struct amdgpu_device *adev = file_inode(f)->i_private;
1436	ssize_t result = 0;
1437	int r;
1438
1439	if (size & 0x3 || *pos & 0x3)
1440		return -EINVAL;
1441
1442	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
1443	if (r < 0) {
1444		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1445		return r;
1446	}
1447
1448	while (size) {
1449		u32 value = adev->gfx.gfx_off_state;
1450
1451		r = put_user(value, (u32 *)buf);
1452		if (r)
1453			goto out;
1454
1455		result += 4;
1456		buf += 4;
1457		*pos += 4;
1458		size -= 4;
1459	}
1460
1461	r = result;
1462out:
1463	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
1464	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1465
1466	return r;
1467}
1468
1469static ssize_t amdgpu_debugfs_gfxoff_status_read(struct file *f, char __user *buf,
1470						 size_t size, loff_t *pos)
1471{
1472	struct amdgpu_device *adev = file_inode(f)->i_private;
1473	ssize_t result = 0;
1474	int r;
1475
1476	if (size & 0x3 || *pos & 0x3)
1477		return -EINVAL;
1478
1479	r = pm_runtime_get_sync(adev_to_drm(adev)->dev);
1480	if (r < 0) {
1481		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1482		return r;
1483	}
1484
1485	while (size) {
1486		u32 value;
1487
1488		r = amdgpu_get_gfx_off_status(adev, &value);
1489		if (r)
1490			goto out;
1491
1492		r = put_user(value, (u32 *)buf);
1493		if (r)
1494			goto out;
1495
1496		result += 4;
1497		buf += 4;
1498		*pos += 4;
1499		size -= 4;
1500	}
1501
1502	r = result;
1503out:
1504	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
1505	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1506
1507	return r;
1508}
1509
1510static const struct file_operations amdgpu_debugfs_regs2_fops = {
1511	.owner = THIS_MODULE,
1512	.unlocked_ioctl = amdgpu_debugfs_regs2_ioctl,
1513	.read = amdgpu_debugfs_regs2_read,
1514	.write = amdgpu_debugfs_regs2_write,
1515	.open = amdgpu_debugfs_regs2_open,
1516	.release = amdgpu_debugfs_regs2_release,
1517	.llseek = default_llseek
1518};
1519
1520static const struct file_operations amdgpu_debugfs_gprwave_fops = {
1521	.owner = THIS_MODULE,
1522	.unlocked_ioctl = amdgpu_debugfs_gprwave_ioctl,
1523	.read = amdgpu_debugfs_gprwave_read,
1524	.open = amdgpu_debugfs_gprwave_open,
1525	.release = amdgpu_debugfs_gprwave_release,
1526	.llseek = default_llseek
1527};
1528
1529static const struct file_operations amdgpu_debugfs_regs_fops = {
1530	.owner = THIS_MODULE,
1531	.read = amdgpu_debugfs_regs_read,
1532	.write = amdgpu_debugfs_regs_write,
1533	.llseek = default_llseek
1534};
1535static const struct file_operations amdgpu_debugfs_regs_didt_fops = {
1536	.owner = THIS_MODULE,
1537	.read = amdgpu_debugfs_regs_didt_read,
1538	.write = amdgpu_debugfs_regs_didt_write,
1539	.llseek = default_llseek
1540};
1541static const struct file_operations amdgpu_debugfs_regs_pcie_fops = {
1542	.owner = THIS_MODULE,
1543	.read = amdgpu_debugfs_regs_pcie_read,
1544	.write = amdgpu_debugfs_regs_pcie_write,
1545	.llseek = default_llseek
1546};
1547static const struct file_operations amdgpu_debugfs_regs_smc_fops = {
1548	.owner = THIS_MODULE,
1549	.read = amdgpu_debugfs_regs_smc_read,
1550	.write = amdgpu_debugfs_regs_smc_write,
1551	.llseek = default_llseek
1552};
1553
1554static const struct file_operations amdgpu_debugfs_gca_config_fops = {
1555	.owner = THIS_MODULE,
1556	.read = amdgpu_debugfs_gca_config_read,
1557	.llseek = default_llseek
1558};
1559
1560static const struct file_operations amdgpu_debugfs_sensors_fops = {
1561	.owner = THIS_MODULE,
1562	.read = amdgpu_debugfs_sensor_read,
1563	.llseek = default_llseek
1564};
1565
1566static const struct file_operations amdgpu_debugfs_wave_fops = {
1567	.owner = THIS_MODULE,
1568	.read = amdgpu_debugfs_wave_read,
1569	.llseek = default_llseek
1570};
1571static const struct file_operations amdgpu_debugfs_gpr_fops = {
1572	.owner = THIS_MODULE,
1573	.read = amdgpu_debugfs_gpr_read,
1574	.llseek = default_llseek
1575};
1576
1577static const struct file_operations amdgpu_debugfs_gfxoff_fops = {
1578	.owner = THIS_MODULE,
1579	.read = amdgpu_debugfs_gfxoff_read,
1580	.write = amdgpu_debugfs_gfxoff_write,
1581	.llseek = default_llseek
1582};
1583
1584static const struct file_operations amdgpu_debugfs_gfxoff_status_fops = {
1585	.owner = THIS_MODULE,
1586	.read = amdgpu_debugfs_gfxoff_status_read,
1587	.llseek = default_llseek
1588};
1589
1590static const struct file_operations amdgpu_debugfs_gfxoff_count_fops = {
1591	.owner = THIS_MODULE,
1592	.read = amdgpu_debugfs_gfxoff_count_read,
1593	.llseek = default_llseek
1594};
1595
1596static const struct file_operations amdgpu_debugfs_gfxoff_residency_fops = {
1597	.owner = THIS_MODULE,
1598	.read = amdgpu_debugfs_gfxoff_residency_read,
1599	.write = amdgpu_debugfs_gfxoff_residency_write,
1600	.llseek = default_llseek
1601};
1602
1603static const struct file_operations *debugfs_regs[] = {
1604	&amdgpu_debugfs_regs_fops,
1605	&amdgpu_debugfs_regs2_fops,
1606	&amdgpu_debugfs_gprwave_fops,
1607	&amdgpu_debugfs_regs_didt_fops,
1608	&amdgpu_debugfs_regs_pcie_fops,
1609	&amdgpu_debugfs_regs_smc_fops,
1610	&amdgpu_debugfs_gca_config_fops,
1611	&amdgpu_debugfs_sensors_fops,
1612	&amdgpu_debugfs_wave_fops,
1613	&amdgpu_debugfs_gpr_fops,
1614	&amdgpu_debugfs_gfxoff_fops,
1615	&amdgpu_debugfs_gfxoff_status_fops,
1616	&amdgpu_debugfs_gfxoff_count_fops,
1617	&amdgpu_debugfs_gfxoff_residency_fops,
1618};
1619
1620static const char * const debugfs_regs_names[] = {
1621	"amdgpu_regs",
1622	"amdgpu_regs2",
1623	"amdgpu_gprwave",
1624	"amdgpu_regs_didt",
1625	"amdgpu_regs_pcie",
1626	"amdgpu_regs_smc",
1627	"amdgpu_gca_config",
1628	"amdgpu_sensors",
1629	"amdgpu_wave",
1630	"amdgpu_gpr",
1631	"amdgpu_gfxoff",
1632	"amdgpu_gfxoff_status",
1633	"amdgpu_gfxoff_count",
1634	"amdgpu_gfxoff_residency",
1635};
1636
1637/**
1638 * amdgpu_debugfs_regs_init -	Initialize debugfs entries that provide
1639 *				register access.
1640 *
1641 * @adev: The device to attach the debugfs entries to
1642 */
1643int amdgpu_debugfs_regs_init(struct amdgpu_device *adev)
1644{
1645	struct drm_minor *minor = adev_to_drm(adev)->primary;
1646	struct dentry *ent, *root = minor->debugfs_root;
1647	unsigned int i;
1648
1649	for (i = 0; i < ARRAY_SIZE(debugfs_regs); i++) {
1650		ent = debugfs_create_file(debugfs_regs_names[i],
1651					  S_IFREG | 0444, root,
1652					  adev, debugfs_regs[i]);
1653		if (!i && !IS_ERR_OR_NULL(ent))
1654			i_size_write(ent->d_inode, adev->rmmio_size);
1655	}
1656
1657	return 0;
1658}
1659
1660static int amdgpu_debugfs_test_ib_show(struct seq_file *m, void *unused)
1661{
1662	struct amdgpu_device *adev = m->private;
1663	struct drm_device *dev = adev_to_drm(adev);
1664	int r = 0, i;
1665
1666	r = pm_runtime_get_sync(dev->dev);
1667	if (r < 0) {
1668		pm_runtime_put_autosuspend(dev->dev);
1669		return r;
1670	}
1671
1672	/* Avoid accidently unparking the sched thread during GPU reset */
1673	r = down_write_killable(&adev->reset_domain->sem);
1674	if (r)
1675		return r;
1676
1677	/* hold on the scheduler */
1678	for (i = 0; i < AMDGPU_MAX_RINGS; i++) {
1679		struct amdgpu_ring *ring = adev->rings[i];
1680
1681		if (!amdgpu_ring_sched_ready(ring))
1682			continue;
1683		drm_sched_wqueue_stop(&ring->sched);
1684	}
1685
1686	seq_puts(m, "run ib test:\n");
1687	r = amdgpu_ib_ring_tests(adev);
1688	if (r)
1689		seq_printf(m, "ib ring tests failed (%d).\n", r);
1690	else
1691		seq_puts(m, "ib ring tests passed.\n");
1692
1693	/* go on the scheduler */
1694	for (i = 0; i < AMDGPU_MAX_RINGS; i++) {
1695		struct amdgpu_ring *ring = adev->rings[i];
1696
1697		if (!amdgpu_ring_sched_ready(ring))
1698			continue;
1699		drm_sched_wqueue_start(&ring->sched);
1700	}
1701
1702	up_write(&adev->reset_domain->sem);
1703
1704	pm_runtime_mark_last_busy(dev->dev);
1705	pm_runtime_put_autosuspend(dev->dev);
1706
1707	return 0;
1708}
1709
1710static int amdgpu_debugfs_evict_vram(void *data, u64 *val)
1711{
1712	struct amdgpu_device *adev = (struct amdgpu_device *)data;
1713	struct drm_device *dev = adev_to_drm(adev);
1714	int r;
1715
1716	r = pm_runtime_get_sync(dev->dev);
1717	if (r < 0) {
1718		pm_runtime_put_autosuspend(dev->dev);
1719		return r;
1720	}
1721
1722	*val = amdgpu_ttm_evict_resources(adev, TTM_PL_VRAM);
1723
1724	pm_runtime_mark_last_busy(dev->dev);
1725	pm_runtime_put_autosuspend(dev->dev);
1726
1727	return 0;
1728}
1729
1730
1731static int amdgpu_debugfs_evict_gtt(void *data, u64 *val)
1732{
1733	struct amdgpu_device *adev = (struct amdgpu_device *)data;
1734	struct drm_device *dev = adev_to_drm(adev);
1735	int r;
1736
1737	r = pm_runtime_get_sync(dev->dev);
1738	if (r < 0) {
1739		pm_runtime_put_autosuspend(dev->dev);
1740		return r;
1741	}
1742
1743	*val = amdgpu_ttm_evict_resources(adev, TTM_PL_TT);
1744
1745	pm_runtime_mark_last_busy(dev->dev);
1746	pm_runtime_put_autosuspend(dev->dev);
1747
1748	return 0;
1749}
1750
1751static int amdgpu_debugfs_benchmark(void *data, u64 val)
1752{
1753	struct amdgpu_device *adev = (struct amdgpu_device *)data;
1754	struct drm_device *dev = adev_to_drm(adev);
1755	int r;
1756
1757	r = pm_runtime_get_sync(dev->dev);
1758	if (r < 0) {
1759		pm_runtime_put_autosuspend(dev->dev);
1760		return r;
1761	}
1762
1763	r = amdgpu_benchmark(adev, val);
1764
1765	pm_runtime_mark_last_busy(dev->dev);
1766	pm_runtime_put_autosuspend(dev->dev);
1767
1768	return r;
1769}
1770
1771static int amdgpu_debugfs_vm_info_show(struct seq_file *m, void *unused)
1772{
1773	struct amdgpu_device *adev = m->private;
1774	struct drm_device *dev = adev_to_drm(adev);
1775	struct drm_file *file;
1776	int r;
1777
1778	r = mutex_lock_interruptible(&dev->filelist_mutex);
1779	if (r)
1780		return r;
1781
1782	list_for_each_entry(file, &dev->filelist, lhead) {
1783		struct amdgpu_fpriv *fpriv = file->driver_priv;
1784		struct amdgpu_vm *vm = &fpriv->vm;
1785		struct amdgpu_task_info *ti;
1786
1787		ti = amdgpu_vm_get_task_info_vm(vm);
1788		if (ti) {
1789			seq_printf(m, "pid:%d\tProcess:%s ----------\n", ti->pid, ti->process_name);
1790			amdgpu_vm_put_task_info(ti);
1791		}
1792
 
 
1793		r = amdgpu_bo_reserve(vm->root.bo, true);
1794		if (r)
1795			break;
1796		amdgpu_debugfs_vm_bo_info(vm, m);
1797		amdgpu_bo_unreserve(vm->root.bo);
1798	}
1799
1800	mutex_unlock(&dev->filelist_mutex);
1801
1802	return r;
1803}
1804
1805DEFINE_SHOW_ATTRIBUTE(amdgpu_debugfs_test_ib);
1806DEFINE_SHOW_ATTRIBUTE(amdgpu_debugfs_vm_info);
1807DEFINE_DEBUGFS_ATTRIBUTE(amdgpu_evict_vram_fops, amdgpu_debugfs_evict_vram,
1808			 NULL, "%lld\n");
1809DEFINE_DEBUGFS_ATTRIBUTE(amdgpu_evict_gtt_fops, amdgpu_debugfs_evict_gtt,
1810			 NULL, "%lld\n");
1811DEFINE_DEBUGFS_ATTRIBUTE(amdgpu_benchmark_fops, NULL, amdgpu_debugfs_benchmark,
1812			 "%lld\n");
1813
1814static void amdgpu_ib_preempt_fences_swap(struct amdgpu_ring *ring,
1815					  struct dma_fence **fences)
1816{
1817	struct amdgpu_fence_driver *drv = &ring->fence_drv;
1818	uint32_t sync_seq, last_seq;
1819
1820	last_seq = atomic_read(&ring->fence_drv.last_seq);
1821	sync_seq = ring->fence_drv.sync_seq;
1822
1823	last_seq &= drv->num_fences_mask;
1824	sync_seq &= drv->num_fences_mask;
1825
1826	do {
1827		struct dma_fence *fence, **ptr;
1828
1829		++last_seq;
1830		last_seq &= drv->num_fences_mask;
1831		ptr = &drv->fences[last_seq];
1832
1833		fence = rcu_dereference_protected(*ptr, 1);
1834		RCU_INIT_POINTER(*ptr, NULL);
1835
1836		if (!fence)
1837			continue;
1838
1839		fences[last_seq] = fence;
1840
1841	} while (last_seq != sync_seq);
1842}
1843
1844static void amdgpu_ib_preempt_signal_fences(struct dma_fence **fences,
1845					    int length)
1846{
1847	int i;
1848	struct dma_fence *fence;
1849
1850	for (i = 0; i < length; i++) {
1851		fence = fences[i];
1852		if (!fence)
1853			continue;
1854		dma_fence_signal(fence);
1855		dma_fence_put(fence);
1856	}
1857}
1858
1859static void amdgpu_ib_preempt_job_recovery(struct drm_gpu_scheduler *sched)
1860{
1861	struct drm_sched_job *s_job;
1862	struct dma_fence *fence;
1863
1864	spin_lock(&sched->job_list_lock);
1865	list_for_each_entry(s_job, &sched->pending_list, list) {
1866		fence = sched->ops->run_job(s_job);
1867		dma_fence_put(fence);
1868	}
1869	spin_unlock(&sched->job_list_lock);
1870}
1871
1872static void amdgpu_ib_preempt_mark_partial_job(struct amdgpu_ring *ring)
1873{
1874	struct amdgpu_job *job;
1875	struct drm_sched_job *s_job, *tmp;
1876	uint32_t preempt_seq;
1877	struct dma_fence *fence, **ptr;
1878	struct amdgpu_fence_driver *drv = &ring->fence_drv;
1879	struct drm_gpu_scheduler *sched = &ring->sched;
1880	bool preempted = true;
1881
1882	if (ring->funcs->type != AMDGPU_RING_TYPE_GFX)
1883		return;
1884
1885	preempt_seq = le32_to_cpu(*(drv->cpu_addr + 2));
1886	if (preempt_seq <= atomic_read(&drv->last_seq)) {
1887		preempted = false;
1888		goto no_preempt;
1889	}
1890
1891	preempt_seq &= drv->num_fences_mask;
1892	ptr = &drv->fences[preempt_seq];
1893	fence = rcu_dereference_protected(*ptr, 1);
1894
1895no_preempt:
1896	spin_lock(&sched->job_list_lock);
1897	list_for_each_entry_safe(s_job, tmp, &sched->pending_list, list) {
1898		if (dma_fence_is_signaled(&s_job->s_fence->finished)) {
1899			/* remove job from ring_mirror_list */
1900			list_del_init(&s_job->list);
1901			sched->ops->free_job(s_job);
1902			continue;
1903		}
1904		job = to_amdgpu_job(s_job);
1905		if (preempted && (&job->hw_fence) == fence)
1906			/* mark the job as preempted */
1907			job->preemption_status |= AMDGPU_IB_PREEMPTED;
1908	}
1909	spin_unlock(&sched->job_list_lock);
1910}
1911
1912static int amdgpu_debugfs_ib_preempt(void *data, u64 val)
1913{
1914	int r, length;
1915	struct amdgpu_ring *ring;
1916	struct dma_fence **fences = NULL;
1917	struct amdgpu_device *adev = (struct amdgpu_device *)data;
1918
1919	if (val >= AMDGPU_MAX_RINGS)
1920		return -EINVAL;
1921
1922	ring = adev->rings[val];
1923
1924	if (!amdgpu_ring_sched_ready(ring) ||
1925	    !ring->funcs->preempt_ib)
1926		return -EINVAL;
1927
1928	/* the last preemption failed */
1929	if (ring->trail_seq != le32_to_cpu(*ring->trail_fence_cpu_addr))
1930		return -EBUSY;
1931
1932	length = ring->fence_drv.num_fences_mask + 1;
1933	fences = kcalloc(length, sizeof(void *), GFP_KERNEL);
1934	if (!fences)
1935		return -ENOMEM;
1936
1937	/* Avoid accidently unparking the sched thread during GPU reset */
1938	r = down_read_killable(&adev->reset_domain->sem);
1939	if (r)
1940		goto pro_end;
1941
1942	/* stop the scheduler */
1943	drm_sched_wqueue_stop(&ring->sched);
1944
1945	/* preempt the IB */
1946	r = amdgpu_ring_preempt_ib(ring);
1947	if (r) {
1948		DRM_WARN("failed to preempt ring %d\n", ring->idx);
1949		goto failure;
1950	}
1951
1952	amdgpu_fence_process(ring);
1953
1954	if (atomic_read(&ring->fence_drv.last_seq) !=
1955	    ring->fence_drv.sync_seq) {
1956		DRM_INFO("ring %d was preempted\n", ring->idx);
1957
1958		amdgpu_ib_preempt_mark_partial_job(ring);
1959
1960		/* swap out the old fences */
1961		amdgpu_ib_preempt_fences_swap(ring, fences);
1962
1963		amdgpu_fence_driver_force_completion(ring);
1964
1965		/* resubmit unfinished jobs */
1966		amdgpu_ib_preempt_job_recovery(&ring->sched);
1967
1968		/* wait for jobs finished */
1969		amdgpu_fence_wait_empty(ring);
1970
1971		/* signal the old fences */
1972		amdgpu_ib_preempt_signal_fences(fences, length);
1973	}
1974
1975failure:
1976	/* restart the scheduler */
1977	drm_sched_wqueue_start(&ring->sched);
1978
1979	up_read(&adev->reset_domain->sem);
1980
1981pro_end:
1982	kfree(fences);
1983
1984	return r;
1985}
1986
1987static int amdgpu_debugfs_sclk_set(void *data, u64 val)
1988{
1989	int ret = 0;
1990	uint32_t max_freq, min_freq;
1991	struct amdgpu_device *adev = (struct amdgpu_device *)data;
1992
1993	if (amdgpu_sriov_vf(adev) && !amdgpu_sriov_is_pp_one_vf(adev))
1994		return -EINVAL;
1995
1996	ret = pm_runtime_get_sync(adev_to_drm(adev)->dev);
1997	if (ret < 0) {
1998		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
1999		return ret;
2000	}
2001
2002	ret = amdgpu_dpm_get_dpm_freq_range(adev, PP_SCLK, &min_freq, &max_freq);
2003	if (ret == -EOPNOTSUPP) {
2004		ret = 0;
2005		goto out;
2006	}
2007	if (ret || val > max_freq || val < min_freq) {
2008		ret = -EINVAL;
2009		goto out;
2010	}
2011
2012	ret = amdgpu_dpm_set_soft_freq_range(adev, PP_SCLK, (uint32_t)val, (uint32_t)val);
2013	if (ret)
2014		ret = -EINVAL;
2015
2016out:
2017	pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
2018	pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
2019
2020	return ret;
2021}
2022
2023DEFINE_DEBUGFS_ATTRIBUTE(fops_ib_preempt, NULL,
2024			amdgpu_debugfs_ib_preempt, "%llu\n");
2025
2026DEFINE_DEBUGFS_ATTRIBUTE(fops_sclk_set, NULL,
2027			amdgpu_debugfs_sclk_set, "%llu\n");
2028
2029static ssize_t amdgpu_reset_dump_register_list_read(struct file *f,
2030				char __user *buf, size_t size, loff_t *pos)
2031{
2032	struct amdgpu_device *adev = (struct amdgpu_device *)file_inode(f)->i_private;
2033	char reg_offset[12];
2034	int i, ret, len = 0;
2035
2036	if (*pos)
2037		return 0;
2038
2039	memset(reg_offset, 0, 12);
2040	ret = down_read_killable(&adev->reset_domain->sem);
2041	if (ret)
2042		return ret;
2043
2044	for (i = 0; i < adev->reset_info.num_regs; i++) {
2045		sprintf(reg_offset, "0x%x\n", adev->reset_info.reset_dump_reg_list[i]);
2046		up_read(&adev->reset_domain->sem);
2047		if (copy_to_user(buf + len, reg_offset, strlen(reg_offset)))
2048			return -EFAULT;
2049
2050		len += strlen(reg_offset);
2051		ret = down_read_killable(&adev->reset_domain->sem);
2052		if (ret)
2053			return ret;
2054	}
2055
2056	up_read(&adev->reset_domain->sem);
2057	*pos += len;
2058
2059	return len;
2060}
2061
2062static ssize_t amdgpu_reset_dump_register_list_write(struct file *f,
2063			const char __user *buf, size_t size, loff_t *pos)
2064{
2065	struct amdgpu_device *adev = (struct amdgpu_device *)file_inode(f)->i_private;
2066	char reg_offset[11];
2067	uint32_t *new = NULL, *tmp = NULL;
2068	int ret, i = 0, len = 0;
2069
2070	do {
2071		memset(reg_offset, 0, 11);
2072		if (copy_from_user(reg_offset, buf + len,
2073					min(10, ((int)size-len)))) {
2074			ret = -EFAULT;
2075			goto error_free;
2076		}
2077
2078		new = krealloc_array(tmp, i + 1, sizeof(uint32_t), GFP_KERNEL);
2079		if (!new) {
2080			ret = -ENOMEM;
2081			goto error_free;
2082		}
2083		tmp = new;
2084		if (sscanf(reg_offset, "%X %n", &tmp[i], &ret) != 1) {
2085			ret = -EINVAL;
2086			goto error_free;
2087		}
2088
2089		len += ret;
2090		i++;
2091	} while (len < size);
2092
2093	new = kmalloc_array(i, sizeof(uint32_t), GFP_KERNEL);
2094	if (!new) {
2095		ret = -ENOMEM;
2096		goto error_free;
2097	}
2098	ret = down_write_killable(&adev->reset_domain->sem);
2099	if (ret)
2100		goto error_free;
2101
2102	swap(adev->reset_info.reset_dump_reg_list, tmp);
2103	swap(adev->reset_info.reset_dump_reg_value, new);
2104	adev->reset_info.num_regs = i;
2105	up_write(&adev->reset_domain->sem);
2106	ret = size;
2107
2108error_free:
2109	if (tmp != new)
2110		kfree(tmp);
2111	kfree(new);
2112	return ret;
2113}
2114
2115static const struct file_operations amdgpu_reset_dump_register_list = {
2116	.owner = THIS_MODULE,
2117	.read = amdgpu_reset_dump_register_list_read,
2118	.write = amdgpu_reset_dump_register_list_write,
2119	.llseek = default_llseek
2120};
2121
2122int amdgpu_debugfs_init(struct amdgpu_device *adev)
2123{
2124	struct dentry *root = adev_to_drm(adev)->primary->debugfs_root;
2125	struct dentry *ent;
2126	int r, i;
2127
2128	if (!debugfs_initialized())
2129		return 0;
2130
2131	debugfs_create_x32("amdgpu_smu_debug", 0600, root,
2132			   &adev->pm.smu_debug_mask);
2133
2134	ent = debugfs_create_file("amdgpu_preempt_ib", 0600, root, adev,
2135				  &fops_ib_preempt);
2136	if (IS_ERR(ent)) {
2137		DRM_ERROR("unable to create amdgpu_preempt_ib debugsfs file\n");
2138		return PTR_ERR(ent);
2139	}
2140
2141	ent = debugfs_create_file("amdgpu_force_sclk", 0200, root, adev,
2142				  &fops_sclk_set);
2143	if (IS_ERR(ent)) {
2144		DRM_ERROR("unable to create amdgpu_set_sclk debugsfs file\n");
2145		return PTR_ERR(ent);
2146	}
2147
2148	/* Register debugfs entries for amdgpu_ttm */
2149	amdgpu_ttm_debugfs_init(adev);
2150	amdgpu_debugfs_pm_init(adev);
2151	amdgpu_debugfs_sa_init(adev);
2152	amdgpu_debugfs_fence_init(adev);
2153	amdgpu_debugfs_gem_init(adev);
2154
2155	r = amdgpu_debugfs_regs_init(adev);
2156	if (r)
2157		DRM_ERROR("registering register debugfs failed (%d).\n", r);
2158
2159	amdgpu_debugfs_firmware_init(adev);
2160	amdgpu_ta_if_debugfs_init(adev);
2161
2162	amdgpu_debugfs_mes_event_log_init(adev);
2163
2164#if defined(CONFIG_DRM_AMD_DC)
2165	if (adev->dc_enabled)
2166		dtn_debugfs_init(adev);
2167#endif
2168
2169	for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
2170		struct amdgpu_ring *ring = adev->rings[i];
2171
2172		if (!ring)
2173			continue;
2174
2175		amdgpu_debugfs_ring_init(adev, ring);
2176	}
2177
2178	for (i = 0; i < adev->vcn.num_vcn_inst; i++) {
2179		if (!amdgpu_vcnfw_log)
2180			break;
2181
2182		if (adev->vcn.harvest_config & (1 << i))
2183			continue;
2184
2185		amdgpu_debugfs_vcn_fwlog_init(adev, i, &adev->vcn.inst[i]);
2186	}
2187
2188	amdgpu_ras_debugfs_create_all(adev);
2189	amdgpu_rap_debugfs_init(adev);
2190	amdgpu_securedisplay_debugfs_init(adev);
2191	amdgpu_fw_attestation_debugfs_init(adev);
2192
2193	debugfs_create_file("amdgpu_evict_vram", 0444, root, adev,
2194			    &amdgpu_evict_vram_fops);
2195	debugfs_create_file("amdgpu_evict_gtt", 0444, root, adev,
2196			    &amdgpu_evict_gtt_fops);
2197	debugfs_create_file("amdgpu_test_ib", 0444, root, adev,
2198			    &amdgpu_debugfs_test_ib_fops);
2199	debugfs_create_file("amdgpu_vm_info", 0444, root, adev,
2200			    &amdgpu_debugfs_vm_info_fops);
2201	debugfs_create_file("amdgpu_benchmark", 0200, root, adev,
2202			    &amdgpu_benchmark_fops);
2203	debugfs_create_file("amdgpu_reset_dump_register_list", 0644, root, adev,
2204			    &amdgpu_reset_dump_register_list);
2205
2206	adev->debugfs_vbios_blob.data = adev->bios;
2207	adev->debugfs_vbios_blob.size = adev->bios_size;
2208	debugfs_create_blob("amdgpu_vbios", 0444, root,
2209			    &adev->debugfs_vbios_blob);
2210
2211	adev->debugfs_discovery_blob.data = adev->mman.discovery_bin;
2212	adev->debugfs_discovery_blob.size = adev->mman.discovery_tmr_size;
2213	debugfs_create_blob("amdgpu_discovery", 0444, root,
2214			    &adev->debugfs_discovery_blob);
2215
2216	return 0;
2217}
2218
2219#else
2220int amdgpu_debugfs_init(struct amdgpu_device *adev)
2221{
2222	return 0;
2223}
2224int amdgpu_debugfs_regs_init(struct amdgpu_device *adev)
2225{
2226	return 0;
2227}
2228#endif