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 * Authors: Dave Airlie
  25 *          Alex Deucher
  26 *          Jerome Glisse
  27 */
 
  28#include <linux/console.h>
  29#include <linux/slab.h>
  30#include <linux/debugfs.h>
  31#include <drm/drmP.h>
  32#include <drm/drm_crtc_helper.h>
  33#include <drm/amdgpu_drm.h>
  34#include <linux/vgaarb.h>
  35#include <linux/vga_switcheroo.h>
  36#include <linux/efi.h>
  37#include "amdgpu.h"
 
  38#include "amdgpu_i2c.h"
  39#include "atom.h"
  40#include "amdgpu_atombios.h"
  41#include "amd_pcie.h"
 
 
 
  42#ifdef CONFIG_DRM_AMDGPU_CIK
  43#include "cik.h"
  44#endif
  45#include "vi.h"
  46#include "bif/bif_4_1_d.h"
 
 
  47
  48static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev);
  49static void amdgpu_debugfs_regs_cleanup(struct amdgpu_device *adev);
  50
  51static const char *amdgpu_asic_name[] = {
 
 
 
 
 
  52	"BONAIRE",
  53	"KAVERI",
  54	"KABINI",
  55	"HAWAII",
  56	"MULLINS",
  57	"TOPAZ",
  58	"TONGA",
  59	"FIJI",
  60	"CARRIZO",
  61	"STONEY",
 
 
 
  62	"LAST",
  63};
  64
  65bool amdgpu_device_is_px(struct drm_device *dev)
  66{
  67	struct amdgpu_device *adev = dev->dev_private;
  68
  69	if (adev->flags & AMD_IS_PX)
  70		return true;
  71	return false;
  72}
  73
  74/*
  75 * MMIO register access helper functions.
  76 */
  77uint32_t amdgpu_mm_rreg(struct amdgpu_device *adev, uint32_t reg,
  78			bool always_indirect)
  79{
 
 
  80	if ((reg * 4) < adev->rmmio_size && !always_indirect)
  81		return readl(((void __iomem *)adev->rmmio) + (reg * 4));
  82	else {
  83		unsigned long flags;
  84		uint32_t ret;
  85
  86		spin_lock_irqsave(&adev->mmio_idx_lock, flags);
  87		writel((reg * 4), ((void __iomem *)adev->rmmio) + (mmMM_INDEX * 4));
  88		ret = readl(((void __iomem *)adev->rmmio) + (mmMM_DATA * 4));
  89		spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
  90
  91		return ret;
  92	}
 
 
  93}
  94
  95void amdgpu_mm_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v,
  96		    bool always_indirect)
  97{
 
 
  98	if ((reg * 4) < adev->rmmio_size && !always_indirect)
  99		writel(v, ((void __iomem *)adev->rmmio) + (reg * 4));
 100	else {
 101		unsigned long flags;
 102
 103		spin_lock_irqsave(&adev->mmio_idx_lock, flags);
 104		writel((reg * 4), ((void __iomem *)adev->rmmio) + (mmMM_INDEX * 4));
 105		writel(v, ((void __iomem *)adev->rmmio) + (mmMM_DATA * 4));
 106		spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
 107	}
 108}
 109
 110u32 amdgpu_io_rreg(struct amdgpu_device *adev, u32 reg)
 111{
 112	if ((reg * 4) < adev->rio_mem_size)
 113		return ioread32(adev->rio_mem + (reg * 4));
 114	else {
 115		iowrite32((reg * 4), adev->rio_mem + (mmMM_INDEX * 4));
 116		return ioread32(adev->rio_mem + (mmMM_DATA * 4));
 117	}
 118}
 119
 120void amdgpu_io_wreg(struct amdgpu_device *adev, u32 reg, u32 v)
 121{
 122
 123	if ((reg * 4) < adev->rio_mem_size)
 124		iowrite32(v, adev->rio_mem + (reg * 4));
 125	else {
 126		iowrite32((reg * 4), adev->rio_mem + (mmMM_INDEX * 4));
 127		iowrite32(v, adev->rio_mem + (mmMM_DATA * 4));
 128	}
 129}
 130
 131/**
 132 * amdgpu_mm_rdoorbell - read a doorbell dword
 133 *
 134 * @adev: amdgpu_device pointer
 135 * @index: doorbell index
 136 *
 137 * Returns the value in the doorbell aperture at the
 138 * requested doorbell index (CIK).
 139 */
 140u32 amdgpu_mm_rdoorbell(struct amdgpu_device *adev, u32 index)
 141{
 142	if (index < adev->doorbell.num_doorbells) {
 143		return readl(adev->doorbell.ptr + index);
 144	} else {
 145		DRM_ERROR("reading beyond doorbell aperture: 0x%08x!\n", index);
 146		return 0;
 147	}
 148}
 149
 150/**
 151 * amdgpu_mm_wdoorbell - write a doorbell dword
 152 *
 153 * @adev: amdgpu_device pointer
 154 * @index: doorbell index
 155 * @v: value to write
 156 *
 157 * Writes @v to the doorbell aperture at the
 158 * requested doorbell index (CIK).
 159 */
 160void amdgpu_mm_wdoorbell(struct amdgpu_device *adev, u32 index, u32 v)
 161{
 162	if (index < adev->doorbell.num_doorbells) {
 163		writel(v, adev->doorbell.ptr + index);
 164	} else {
 165		DRM_ERROR("writing beyond doorbell aperture: 0x%08x!\n", index);
 166	}
 167}
 168
 169/**
 170 * amdgpu_invalid_rreg - dummy reg read function
 171 *
 172 * @adev: amdgpu device pointer
 173 * @reg: offset of register
 174 *
 175 * Dummy register read function.  Used for register blocks
 176 * that certain asics don't have (all asics).
 177 * Returns the value in the register.
 178 */
 179static uint32_t amdgpu_invalid_rreg(struct amdgpu_device *adev, uint32_t reg)
 180{
 181	DRM_ERROR("Invalid callback to read register 0x%04X\n", reg);
 182	BUG();
 183	return 0;
 184}
 185
 186/**
 187 * amdgpu_invalid_wreg - dummy reg write function
 188 *
 189 * @adev: amdgpu device pointer
 190 * @reg: offset of register
 191 * @v: value to write to the register
 192 *
 193 * Dummy register read function.  Used for register blocks
 194 * that certain asics don't have (all asics).
 195 */
 196static void amdgpu_invalid_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
 197{
 198	DRM_ERROR("Invalid callback to write register 0x%04X with 0x%08X\n",
 199		  reg, v);
 200	BUG();
 201}
 202
 203/**
 204 * amdgpu_block_invalid_rreg - dummy reg read function
 205 *
 206 * @adev: amdgpu device pointer
 207 * @block: offset of instance
 208 * @reg: offset of register
 209 *
 210 * Dummy register read function.  Used for register blocks
 211 * that certain asics don't have (all asics).
 212 * Returns the value in the register.
 213 */
 214static uint32_t amdgpu_block_invalid_rreg(struct amdgpu_device *adev,
 215					  uint32_t block, uint32_t reg)
 216{
 217	DRM_ERROR("Invalid callback to read register 0x%04X in block 0x%04X\n",
 218		  reg, block);
 219	BUG();
 220	return 0;
 221}
 222
 223/**
 224 * amdgpu_block_invalid_wreg - dummy reg write function
 225 *
 226 * @adev: amdgpu device pointer
 227 * @block: offset of instance
 228 * @reg: offset of register
 229 * @v: value to write to the register
 230 *
 231 * Dummy register read function.  Used for register blocks
 232 * that certain asics don't have (all asics).
 233 */
 234static void amdgpu_block_invalid_wreg(struct amdgpu_device *adev,
 235				      uint32_t block,
 236				      uint32_t reg, uint32_t v)
 237{
 238	DRM_ERROR("Invalid block callback to write register 0x%04X in block 0x%04X with 0x%08X\n",
 239		  reg, block, v);
 240	BUG();
 241}
 242
 243static int amdgpu_vram_scratch_init(struct amdgpu_device *adev)
 244{
 245	int r;
 246
 247	if (adev->vram_scratch.robj == NULL) {
 248		r = amdgpu_bo_create(adev, AMDGPU_GPU_PAGE_SIZE,
 249				     PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_VRAM,
 250				     AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
 
 251				     NULL, NULL, &adev->vram_scratch.robj);
 252		if (r) {
 253			return r;
 254		}
 255	}
 256
 257	r = amdgpu_bo_reserve(adev->vram_scratch.robj, false);
 258	if (unlikely(r != 0))
 259		return r;
 260	r = amdgpu_bo_pin(adev->vram_scratch.robj,
 261			  AMDGPU_GEM_DOMAIN_VRAM, &adev->vram_scratch.gpu_addr);
 262	if (r) {
 263		amdgpu_bo_unreserve(adev->vram_scratch.robj);
 264		return r;
 265	}
 266	r = amdgpu_bo_kmap(adev->vram_scratch.robj,
 267				(void **)&adev->vram_scratch.ptr);
 268	if (r)
 269		amdgpu_bo_unpin(adev->vram_scratch.robj);
 270	amdgpu_bo_unreserve(adev->vram_scratch.robj);
 271
 272	return r;
 273}
 274
 275static void amdgpu_vram_scratch_fini(struct amdgpu_device *adev)
 276{
 277	int r;
 278
 279	if (adev->vram_scratch.robj == NULL) {
 280		return;
 281	}
 282	r = amdgpu_bo_reserve(adev->vram_scratch.robj, false);
 283	if (likely(r == 0)) {
 284		amdgpu_bo_kunmap(adev->vram_scratch.robj);
 285		amdgpu_bo_unpin(adev->vram_scratch.robj);
 286		amdgpu_bo_unreserve(adev->vram_scratch.robj);
 287	}
 288	amdgpu_bo_unref(&adev->vram_scratch.robj);
 289}
 290
 291/**
 292 * amdgpu_program_register_sequence - program an array of registers.
 293 *
 294 * @adev: amdgpu_device pointer
 295 * @registers: pointer to the register array
 296 * @array_size: size of the register array
 297 *
 298 * Programs an array or registers with and and or masks.
 299 * This is a helper for setting golden registers.
 300 */
 301void amdgpu_program_register_sequence(struct amdgpu_device *adev,
 302				      const u32 *registers,
 303				      const u32 array_size)
 304{
 305	u32 tmp, reg, and_mask, or_mask;
 306	int i;
 307
 308	if (array_size % 3)
 309		return;
 310
 311	for (i = 0; i < array_size; i +=3) {
 312		reg = registers[i + 0];
 313		and_mask = registers[i + 1];
 314		or_mask = registers[i + 2];
 315
 316		if (and_mask == 0xffffffff) {
 317			tmp = or_mask;
 318		} else {
 319			tmp = RREG32(reg);
 320			tmp &= ~and_mask;
 321			tmp |= or_mask;
 322		}
 323		WREG32(reg, tmp);
 324	}
 325}
 326
 327void amdgpu_pci_config_reset(struct amdgpu_device *adev)
 328{
 329	pci_write_config_dword(adev->pdev, 0x7c, AMDGPU_ASIC_RESET_DATA);
 330}
 331
 332/*
 333 * GPU doorbell aperture helpers function.
 334 */
 335/**
 336 * amdgpu_doorbell_init - Init doorbell driver information.
 337 *
 338 * @adev: amdgpu_device pointer
 339 *
 340 * Init doorbell driver information (CIK)
 341 * Returns 0 on success, error on failure.
 342 */
 343static int amdgpu_doorbell_init(struct amdgpu_device *adev)
 344{
 345	/* doorbell bar mapping */
 346	adev->doorbell.base = pci_resource_start(adev->pdev, 2);
 347	adev->doorbell.size = pci_resource_len(adev->pdev, 2);
 348
 349	adev->doorbell.num_doorbells = min_t(u32, adev->doorbell.size / sizeof(u32), 
 350					     AMDGPU_DOORBELL_MAX_ASSIGNMENT+1);
 351	if (adev->doorbell.num_doorbells == 0)
 352		return -EINVAL;
 353
 354	adev->doorbell.ptr = ioremap(adev->doorbell.base, adev->doorbell.num_doorbells * sizeof(u32));
 355	if (adev->doorbell.ptr == NULL) {
 356		return -ENOMEM;
 357	}
 358	DRM_INFO("doorbell mmio base: 0x%08X\n", (uint32_t)adev->doorbell.base);
 359	DRM_INFO("doorbell mmio size: %u\n", (unsigned)adev->doorbell.size);
 360
 361	return 0;
 362}
 363
 364/**
 365 * amdgpu_doorbell_fini - Tear down doorbell driver information.
 366 *
 367 * @adev: amdgpu_device pointer
 368 *
 369 * Tear down doorbell driver information (CIK)
 370 */
 371static void amdgpu_doorbell_fini(struct amdgpu_device *adev)
 372{
 373	iounmap(adev->doorbell.ptr);
 374	adev->doorbell.ptr = NULL;
 375}
 376
 377/**
 378 * amdgpu_doorbell_get_kfd_info - Report doorbell configuration required to
 379 *                                setup amdkfd
 380 *
 381 * @adev: amdgpu_device pointer
 382 * @aperture_base: output returning doorbell aperture base physical address
 383 * @aperture_size: output returning doorbell aperture size in bytes
 384 * @start_offset: output returning # of doorbell bytes reserved for amdgpu.
 385 *
 386 * amdgpu and amdkfd share the doorbell aperture. amdgpu sets it up,
 387 * takes doorbells required for its own rings and reports the setup to amdkfd.
 388 * amdgpu reserved doorbells are at the start of the doorbell aperture.
 389 */
 390void amdgpu_doorbell_get_kfd_info(struct amdgpu_device *adev,
 391				phys_addr_t *aperture_base,
 392				size_t *aperture_size,
 393				size_t *start_offset)
 394{
 395	/*
 396	 * The first num_doorbells are used by amdgpu.
 397	 * amdkfd takes whatever's left in the aperture.
 398	 */
 399	if (adev->doorbell.size > adev->doorbell.num_doorbells * sizeof(u32)) {
 400		*aperture_base = adev->doorbell.base;
 401		*aperture_size = adev->doorbell.size;
 402		*start_offset = adev->doorbell.num_doorbells * sizeof(u32);
 403	} else {
 404		*aperture_base = 0;
 405		*aperture_size = 0;
 406		*start_offset = 0;
 407	}
 408}
 409
 410/*
 411 * amdgpu_wb_*()
 412 * Writeback is the the method by which the the GPU updates special pages
 413 * in memory with the status of certain GPU events (fences, ring pointers,
 414 * etc.).
 415 */
 416
 417/**
 418 * amdgpu_wb_fini - Disable Writeback and free memory
 419 *
 420 * @adev: amdgpu_device pointer
 421 *
 422 * Disables Writeback and frees the Writeback memory (all asics).
 423 * Used at driver shutdown.
 424 */
 425static void amdgpu_wb_fini(struct amdgpu_device *adev)
 426{
 427	if (adev->wb.wb_obj) {
 428		if (!amdgpu_bo_reserve(adev->wb.wb_obj, false)) {
 429			amdgpu_bo_kunmap(adev->wb.wb_obj);
 430			amdgpu_bo_unpin(adev->wb.wb_obj);
 431			amdgpu_bo_unreserve(adev->wb.wb_obj);
 432		}
 433		amdgpu_bo_unref(&adev->wb.wb_obj);
 434		adev->wb.wb = NULL;
 435		adev->wb.wb_obj = NULL;
 436	}
 437}
 438
 439/**
 440 * amdgpu_wb_init- Init Writeback driver info and allocate memory
 441 *
 442 * @adev: amdgpu_device pointer
 443 *
 444 * Disables Writeback and frees the Writeback memory (all asics).
 445 * Used at driver startup.
 446 * Returns 0 on success or an -error on failure.
 447 */
 448static int amdgpu_wb_init(struct amdgpu_device *adev)
 449{
 450	int r;
 451
 452	if (adev->wb.wb_obj == NULL) {
 453		r = amdgpu_bo_create(adev, AMDGPU_MAX_WB * 4, PAGE_SIZE, true,
 454				     AMDGPU_GEM_DOMAIN_GTT, 0,  NULL, NULL,
 455				     &adev->wb.wb_obj);
 
 456		if (r) {
 457			dev_warn(adev->dev, "(%d) create WB bo failed\n", r);
 458			return r;
 459		}
 460		r = amdgpu_bo_reserve(adev->wb.wb_obj, false);
 461		if (unlikely(r != 0)) {
 462			amdgpu_wb_fini(adev);
 463			return r;
 464		}
 465		r = amdgpu_bo_pin(adev->wb.wb_obj, AMDGPU_GEM_DOMAIN_GTT,
 466				&adev->wb.gpu_addr);
 467		if (r) {
 468			amdgpu_bo_unreserve(adev->wb.wb_obj);
 469			dev_warn(adev->dev, "(%d) pin WB bo failed\n", r);
 470			amdgpu_wb_fini(adev);
 471			return r;
 472		}
 473		r = amdgpu_bo_kmap(adev->wb.wb_obj, (void **)&adev->wb.wb);
 474		amdgpu_bo_unreserve(adev->wb.wb_obj);
 475		if (r) {
 476			dev_warn(adev->dev, "(%d) map WB bo failed\n", r);
 477			amdgpu_wb_fini(adev);
 478			return r;
 479		}
 480
 481		adev->wb.num_wb = AMDGPU_MAX_WB;
 482		memset(&adev->wb.used, 0, sizeof(adev->wb.used));
 483
 484		/* clear wb memory */
 485		memset((char *)adev->wb.wb, 0, AMDGPU_GPU_PAGE_SIZE);
 486	}
 487
 488	return 0;
 489}
 490
 491/**
 492 * amdgpu_wb_get - Allocate a wb entry
 493 *
 494 * @adev: amdgpu_device pointer
 495 * @wb: wb index
 496 *
 497 * Allocate a wb slot for use by the driver (all asics).
 498 * Returns 0 on success or -EINVAL on failure.
 499 */
 500int amdgpu_wb_get(struct amdgpu_device *adev, u32 *wb)
 501{
 502	unsigned long offset = find_first_zero_bit(adev->wb.used, adev->wb.num_wb);
 503	if (offset < adev->wb.num_wb) {
 504		__set_bit(offset, adev->wb.used);
 505		*wb = offset;
 506		return 0;
 507	} else {
 508		return -EINVAL;
 509	}
 510}
 511
 512/**
 513 * amdgpu_wb_free - Free a wb entry
 514 *
 515 * @adev: amdgpu_device pointer
 516 * @wb: wb index
 517 *
 518 * Free a wb slot allocated for use by the driver (all asics)
 519 */
 520void amdgpu_wb_free(struct amdgpu_device *adev, u32 wb)
 521{
 522	if (wb < adev->wb.num_wb)
 523		__clear_bit(wb, adev->wb.used);
 524}
 525
 526/**
 527 * amdgpu_vram_location - try to find VRAM location
 528 * @adev: amdgpu device structure holding all necessary informations
 529 * @mc: memory controller structure holding memory informations
 530 * @base: base address at which to put VRAM
 531 *
 532 * Function will place try to place VRAM at base address provided
 533 * as parameter (which is so far either PCI aperture address or
 534 * for IGP TOM base address).
 535 *
 536 * If there is not enough space to fit the unvisible VRAM in the 32bits
 537 * address space then we limit the VRAM size to the aperture.
 538 *
 539 * Note: We don't explicitly enforce VRAM start to be aligned on VRAM size,
 540 * this shouldn't be a problem as we are using the PCI aperture as a reference.
 541 * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but
 542 * not IGP.
 543 *
 544 * Note: we use mc_vram_size as on some board we need to program the mc to
 545 * cover the whole aperture even if VRAM size is inferior to aperture size
 546 * Novell bug 204882 + along with lots of ubuntu ones
 547 *
 548 * Note: when limiting vram it's safe to overwritte real_vram_size because
 549 * we are not in case where real_vram_size is inferior to mc_vram_size (ie
 550 * note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu
 551 * ones)
 552 *
 553 * Note: IGP TOM addr should be the same as the aperture addr, we don't
 554 * explicitly check for that thought.
 555 *
 556 * FIXME: when reducing VRAM size align new size on power of 2.
 557 */
 558void amdgpu_vram_location(struct amdgpu_device *adev, struct amdgpu_mc *mc, u64 base)
 559{
 560	uint64_t limit = (uint64_t)amdgpu_vram_limit << 20;
 561
 562	mc->vram_start = base;
 563	if (mc->mc_vram_size > (adev->mc.mc_mask - base + 1)) {
 564		dev_warn(adev->dev, "limiting VRAM to PCI aperture size\n");
 565		mc->real_vram_size = mc->aper_size;
 566		mc->mc_vram_size = mc->aper_size;
 567	}
 568	mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
 569	if (limit && limit < mc->real_vram_size)
 570		mc->real_vram_size = limit;
 571	dev_info(adev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
 572			mc->mc_vram_size >> 20, mc->vram_start,
 573			mc->vram_end, mc->real_vram_size >> 20);
 574}
 575
 576/**
 577 * amdgpu_gtt_location - try to find GTT location
 578 * @adev: amdgpu device structure holding all necessary informations
 579 * @mc: memory controller structure holding memory informations
 580 *
 581 * Function will place try to place GTT before or after VRAM.
 582 *
 583 * If GTT size is bigger than space left then we ajust GTT size.
 584 * Thus function will never fails.
 585 *
 586 * FIXME: when reducing GTT size align new size on power of 2.
 587 */
 588void amdgpu_gtt_location(struct amdgpu_device *adev, struct amdgpu_mc *mc)
 589{
 590	u64 size_af, size_bf;
 591
 592	size_af = ((adev->mc.mc_mask - mc->vram_end) + mc->gtt_base_align) & ~mc->gtt_base_align;
 593	size_bf = mc->vram_start & ~mc->gtt_base_align;
 594	if (size_bf > size_af) {
 595		if (mc->gtt_size > size_bf) {
 596			dev_warn(adev->dev, "limiting GTT\n");
 597			mc->gtt_size = size_bf;
 598		}
 599		mc->gtt_start = (mc->vram_start & ~mc->gtt_base_align) - mc->gtt_size;
 600	} else {
 601		if (mc->gtt_size > size_af) {
 602			dev_warn(adev->dev, "limiting GTT\n");
 603			mc->gtt_size = size_af;
 604		}
 605		mc->gtt_start = (mc->vram_end + 1 + mc->gtt_base_align) & ~mc->gtt_base_align;
 606	}
 607	mc->gtt_end = mc->gtt_start + mc->gtt_size - 1;
 608	dev_info(adev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n",
 609			mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end);
 610}
 611
 612/*
 613 * GPU helpers function.
 614 */
 615/**
 616 * amdgpu_card_posted - check if the hw has already been initialized
 617 *
 618 * @adev: amdgpu_device pointer
 619 *
 620 * Check if the asic has been initialized (all asics).
 621 * Used at driver startup.
 622 * Returns true if initialized or false if not.
 623 */
 624bool amdgpu_card_posted(struct amdgpu_device *adev)
 625{
 626	uint32_t reg;
 627
 628	/* then check MEM_SIZE, in case the crtcs are off */
 629	reg = RREG32(mmCONFIG_MEMSIZE);
 630
 631	if (reg)
 632		return true;
 633
 634	return false;
 635
 636}
 637
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 638/**
 639 * amdgpu_dummy_page_init - init dummy page used by the driver
 640 *
 641 * @adev: amdgpu_device pointer
 642 *
 643 * Allocate the dummy page used by the driver (all asics).
 644 * This dummy page is used by the driver as a filler for gart entries
 645 * when pages are taken out of the GART
 646 * Returns 0 on sucess, -ENOMEM on failure.
 647 */
 648int amdgpu_dummy_page_init(struct amdgpu_device *adev)
 649{
 650	if (adev->dummy_page.page)
 651		return 0;
 652	adev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO);
 653	if (adev->dummy_page.page == NULL)
 654		return -ENOMEM;
 655	adev->dummy_page.addr = pci_map_page(adev->pdev, adev->dummy_page.page,
 656					0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 657	if (pci_dma_mapping_error(adev->pdev, adev->dummy_page.addr)) {
 658		dev_err(&adev->pdev->dev, "Failed to DMA MAP the dummy page\n");
 659		__free_page(adev->dummy_page.page);
 660		adev->dummy_page.page = NULL;
 661		return -ENOMEM;
 662	}
 663	return 0;
 664}
 665
 666/**
 667 * amdgpu_dummy_page_fini - free dummy page used by the driver
 668 *
 669 * @adev: amdgpu_device pointer
 670 *
 671 * Frees the dummy page used by the driver (all asics).
 672 */
 673void amdgpu_dummy_page_fini(struct amdgpu_device *adev)
 674{
 675	if (adev->dummy_page.page == NULL)
 676		return;
 677	pci_unmap_page(adev->pdev, adev->dummy_page.addr,
 678			PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
 679	__free_page(adev->dummy_page.page);
 680	adev->dummy_page.page = NULL;
 681}
 682
 683
 684/* ATOM accessor methods */
 685/*
 686 * ATOM is an interpreted byte code stored in tables in the vbios.  The
 687 * driver registers callbacks to access registers and the interpreter
 688 * in the driver parses the tables and executes then to program specific
 689 * actions (set display modes, asic init, etc.).  See amdgpu_atombios.c,
 690 * atombios.h, and atom.c
 691 */
 692
 693/**
 694 * cail_pll_read - read PLL register
 695 *
 696 * @info: atom card_info pointer
 697 * @reg: PLL register offset
 698 *
 699 * Provides a PLL register accessor for the atom interpreter (r4xx+).
 700 * Returns the value of the PLL register.
 701 */
 702static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
 703{
 704	return 0;
 705}
 706
 707/**
 708 * cail_pll_write - write PLL register
 709 *
 710 * @info: atom card_info pointer
 711 * @reg: PLL register offset
 712 * @val: value to write to the pll register
 713 *
 714 * Provides a PLL register accessor for the atom interpreter (r4xx+).
 715 */
 716static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
 717{
 718
 719}
 720
 721/**
 722 * cail_mc_read - read MC (Memory Controller) register
 723 *
 724 * @info: atom card_info pointer
 725 * @reg: MC register offset
 726 *
 727 * Provides an MC register accessor for the atom interpreter (r4xx+).
 728 * Returns the value of the MC register.
 729 */
 730static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
 731{
 732	return 0;
 733}
 734
 735/**
 736 * cail_mc_write - write MC (Memory Controller) register
 737 *
 738 * @info: atom card_info pointer
 739 * @reg: MC register offset
 740 * @val: value to write to the pll register
 741 *
 742 * Provides a MC register accessor for the atom interpreter (r4xx+).
 743 */
 744static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
 745{
 746
 747}
 748
 749/**
 750 * cail_reg_write - write MMIO register
 751 *
 752 * @info: atom card_info pointer
 753 * @reg: MMIO register offset
 754 * @val: value to write to the pll register
 755 *
 756 * Provides a MMIO register accessor for the atom interpreter (r4xx+).
 757 */
 758static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
 759{
 760	struct amdgpu_device *adev = info->dev->dev_private;
 761
 762	WREG32(reg, val);
 763}
 764
 765/**
 766 * cail_reg_read - read MMIO register
 767 *
 768 * @info: atom card_info pointer
 769 * @reg: MMIO register offset
 770 *
 771 * Provides an MMIO register accessor for the atom interpreter (r4xx+).
 772 * Returns the value of the MMIO register.
 773 */
 774static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
 775{
 776	struct amdgpu_device *adev = info->dev->dev_private;
 777	uint32_t r;
 778
 779	r = RREG32(reg);
 780	return r;
 781}
 782
 783/**
 784 * cail_ioreg_write - write IO register
 785 *
 786 * @info: atom card_info pointer
 787 * @reg: IO register offset
 788 * @val: value to write to the pll register
 789 *
 790 * Provides a IO register accessor for the atom interpreter (r4xx+).
 791 */
 792static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)
 793{
 794	struct amdgpu_device *adev = info->dev->dev_private;
 795
 796	WREG32_IO(reg, val);
 797}
 798
 799/**
 800 * cail_ioreg_read - read IO register
 801 *
 802 * @info: atom card_info pointer
 803 * @reg: IO register offset
 804 *
 805 * Provides an IO register accessor for the atom interpreter (r4xx+).
 806 * Returns the value of the IO register.
 807 */
 808static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)
 809{
 810	struct amdgpu_device *adev = info->dev->dev_private;
 811	uint32_t r;
 812
 813	r = RREG32_IO(reg);
 814	return r;
 815}
 816
 817/**
 818 * amdgpu_atombios_fini - free the driver info and callbacks for atombios
 819 *
 820 * @adev: amdgpu_device pointer
 821 *
 822 * Frees the driver info and register access callbacks for the ATOM
 823 * interpreter (r4xx+).
 824 * Called at driver shutdown.
 825 */
 826static void amdgpu_atombios_fini(struct amdgpu_device *adev)
 827{
 828	if (adev->mode_info.atom_context)
 829		kfree(adev->mode_info.atom_context->scratch);
 
 
 830	kfree(adev->mode_info.atom_context);
 831	adev->mode_info.atom_context = NULL;
 832	kfree(adev->mode_info.atom_card_info);
 833	adev->mode_info.atom_card_info = NULL;
 834}
 835
 836/**
 837 * amdgpu_atombios_init - init the driver info and callbacks for atombios
 838 *
 839 * @adev: amdgpu_device pointer
 840 *
 841 * Initializes the driver info and register access callbacks for the
 842 * ATOM interpreter (r4xx+).
 843 * Returns 0 on sucess, -ENOMEM on failure.
 844 * Called at driver startup.
 845 */
 846static int amdgpu_atombios_init(struct amdgpu_device *adev)
 847{
 848	struct card_info *atom_card_info =
 849	    kzalloc(sizeof(struct card_info), GFP_KERNEL);
 850
 851	if (!atom_card_info)
 852		return -ENOMEM;
 853
 854	adev->mode_info.atom_card_info = atom_card_info;
 855	atom_card_info->dev = adev->ddev;
 856	atom_card_info->reg_read = cail_reg_read;
 857	atom_card_info->reg_write = cail_reg_write;
 858	/* needed for iio ops */
 859	if (adev->rio_mem) {
 860		atom_card_info->ioreg_read = cail_ioreg_read;
 861		atom_card_info->ioreg_write = cail_ioreg_write;
 862	} else {
 863		DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n");
 864		atom_card_info->ioreg_read = cail_reg_read;
 865		atom_card_info->ioreg_write = cail_reg_write;
 866	}
 867	atom_card_info->mc_read = cail_mc_read;
 868	atom_card_info->mc_write = cail_mc_write;
 869	atom_card_info->pll_read = cail_pll_read;
 870	atom_card_info->pll_write = cail_pll_write;
 871
 872	adev->mode_info.atom_context = amdgpu_atom_parse(atom_card_info, adev->bios);
 873	if (!adev->mode_info.atom_context) {
 874		amdgpu_atombios_fini(adev);
 875		return -ENOMEM;
 876	}
 877
 878	mutex_init(&adev->mode_info.atom_context->mutex);
 879	amdgpu_atombios_scratch_regs_init(adev);
 880	amdgpu_atom_allocate_fb_scratch(adev->mode_info.atom_context);
 881	return 0;
 882}
 883
 884/* if we get transitioned to only one device, take VGA back */
 885/**
 886 * amdgpu_vga_set_decode - enable/disable vga decode
 887 *
 888 * @cookie: amdgpu_device pointer
 889 * @state: enable/disable vga decode
 890 *
 891 * Enable/disable vga decode (all asics).
 892 * Returns VGA resource flags.
 893 */
 894static unsigned int amdgpu_vga_set_decode(void *cookie, bool state)
 895{
 896	struct amdgpu_device *adev = cookie;
 897	amdgpu_asic_set_vga_state(adev, state);
 898	if (state)
 899		return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
 900		       VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 901	else
 902		return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 903}
 904
 905/**
 906 * amdgpu_check_pot_argument - check that argument is a power of two
 907 *
 908 * @arg: value to check
 909 *
 910 * Validates that a certain argument is a power of two (all asics).
 911 * Returns true if argument is valid.
 912 */
 913static bool amdgpu_check_pot_argument(int arg)
 914{
 915	return (arg & (arg - 1)) == 0;
 916}
 917
 918/**
 919 * amdgpu_check_arguments - validate module params
 920 *
 921 * @adev: amdgpu_device pointer
 922 *
 923 * Validates certain module parameters and updates
 924 * the associated values used by the driver (all asics).
 925 */
 926static void amdgpu_check_arguments(struct amdgpu_device *adev)
 927{
 928	if (amdgpu_sched_jobs < 4) {
 929		dev_warn(adev->dev, "sched jobs (%d) must be at least 4\n",
 930			 amdgpu_sched_jobs);
 931		amdgpu_sched_jobs = 4;
 932	} else if (!amdgpu_check_pot_argument(amdgpu_sched_jobs)){
 933		dev_warn(adev->dev, "sched jobs (%d) must be a power of 2\n",
 934			 amdgpu_sched_jobs);
 935		amdgpu_sched_jobs = roundup_pow_of_two(amdgpu_sched_jobs);
 936	}
 937
 938	if (amdgpu_gart_size != -1) {
 939		/* gtt size must be power of two and greater or equal to 32M */
 940		if (amdgpu_gart_size < 32) {
 941			dev_warn(adev->dev, "gart size (%d) too small\n",
 942				 amdgpu_gart_size);
 943			amdgpu_gart_size = -1;
 944		} else if (!amdgpu_check_pot_argument(amdgpu_gart_size)) {
 945			dev_warn(adev->dev, "gart size (%d) must be a power of 2\n",
 946				 amdgpu_gart_size);
 947			amdgpu_gart_size = -1;
 948		}
 949	}
 950
 951	if (!amdgpu_check_pot_argument(amdgpu_vm_size)) {
 952		dev_warn(adev->dev, "VM size (%d) must be a power of 2\n",
 953			 amdgpu_vm_size);
 954		amdgpu_vm_size = 8;
 955	}
 956
 957	if (amdgpu_vm_size < 1) {
 958		dev_warn(adev->dev, "VM size (%d) too small, min is 1GB\n",
 959			 amdgpu_vm_size);
 960		amdgpu_vm_size = 8;
 961	}
 962
 963	/*
 964	 * Max GPUVM size for Cayman, SI and CI are 40 bits.
 965	 */
 966	if (amdgpu_vm_size > 1024) {
 967		dev_warn(adev->dev, "VM size (%d) too large, max is 1TB\n",
 968			 amdgpu_vm_size);
 969		amdgpu_vm_size = 8;
 970	}
 971
 972	/* defines number of bits in page table versus page directory,
 973	 * a page is 4KB so we have 12 bits offset, minimum 9 bits in the
 974	 * page table and the remaining bits are in the page directory */
 975	if (amdgpu_vm_block_size == -1) {
 976
 977		/* Total bits covered by PD + PTs */
 978		unsigned bits = ilog2(amdgpu_vm_size) + 18;
 979
 980		/* Make sure the PD is 4K in size up to 8GB address space.
 981		   Above that split equal between PD and PTs */
 982		if (amdgpu_vm_size <= 8)
 983			amdgpu_vm_block_size = bits - 9;
 984		else
 985			amdgpu_vm_block_size = (bits + 3) / 2;
 986
 987	} else if (amdgpu_vm_block_size < 9) {
 988		dev_warn(adev->dev, "VM page table size (%d) too small\n",
 989			 amdgpu_vm_block_size);
 990		amdgpu_vm_block_size = 9;
 991	}
 992
 993	if (amdgpu_vm_block_size > 24 ||
 994	    (amdgpu_vm_size * 1024) < (1ull << amdgpu_vm_block_size)) {
 995		dev_warn(adev->dev, "VM page table size (%d) too large\n",
 996			 amdgpu_vm_block_size);
 997		amdgpu_vm_block_size = 9;
 998	}
 
 
 
 
 
 
 
 999}
1000
1001/**
1002 * amdgpu_switcheroo_set_state - set switcheroo state
1003 *
1004 * @pdev: pci dev pointer
1005 * @state: vga_switcheroo state
1006 *
1007 * Callback for the switcheroo driver.  Suspends or resumes the
1008 * the asics before or after it is powered up using ACPI methods.
1009 */
1010static void amdgpu_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
1011{
1012	struct drm_device *dev = pci_get_drvdata(pdev);
1013
1014	if (amdgpu_device_is_px(dev) && state == VGA_SWITCHEROO_OFF)
1015		return;
1016
1017	if (state == VGA_SWITCHEROO_ON) {
1018		unsigned d3_delay = dev->pdev->d3_delay;
1019
1020		printk(KERN_INFO "amdgpu: switched on\n");
1021		/* don't suspend or resume card normally */
1022		dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1023
1024		amdgpu_resume_kms(dev, true, true);
1025
1026		dev->pdev->d3_delay = d3_delay;
1027
1028		dev->switch_power_state = DRM_SWITCH_POWER_ON;
1029		drm_kms_helper_poll_enable(dev);
1030	} else {
1031		printk(KERN_INFO "amdgpu: switched off\n");
1032		drm_kms_helper_poll_disable(dev);
1033		dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1034		amdgpu_suspend_kms(dev, true, true);
1035		dev->switch_power_state = DRM_SWITCH_POWER_OFF;
1036	}
1037}
1038
1039/**
1040 * amdgpu_switcheroo_can_switch - see if switcheroo state can change
1041 *
1042 * @pdev: pci dev pointer
1043 *
1044 * Callback for the switcheroo driver.  Check of the switcheroo
1045 * state can be changed.
1046 * Returns true if the state can be changed, false if not.
1047 */
1048static bool amdgpu_switcheroo_can_switch(struct pci_dev *pdev)
1049{
1050	struct drm_device *dev = pci_get_drvdata(pdev);
1051
1052	/*
1053	* FIXME: open_count is protected by drm_global_mutex but that would lead to
1054	* locking inversion with the driver load path. And the access here is
1055	* completely racy anyway. So don't bother with locking for now.
1056	*/
1057	return dev->open_count == 0;
1058}
1059
1060static const struct vga_switcheroo_client_ops amdgpu_switcheroo_ops = {
1061	.set_gpu_state = amdgpu_switcheroo_set_state,
1062	.reprobe = NULL,
1063	.can_switch = amdgpu_switcheroo_can_switch,
1064};
1065
1066int amdgpu_set_clockgating_state(struct amdgpu_device *adev,
1067				  enum amd_ip_block_type block_type,
1068				  enum amd_clockgating_state state)
1069{
1070	int i, r = 0;
1071
1072	for (i = 0; i < adev->num_ip_blocks; i++) {
1073		if (adev->ip_blocks[i].type == block_type) {
1074			r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev,
1075									    state);
 
 
1076			if (r)
1077				return r;
 
1078		}
1079	}
1080	return r;
1081}
1082
1083int amdgpu_set_powergating_state(struct amdgpu_device *adev,
1084				  enum amd_ip_block_type block_type,
1085				  enum amd_powergating_state state)
1086{
1087	int i, r = 0;
1088
1089	for (i = 0; i < adev->num_ip_blocks; i++) {
1090		if (adev->ip_blocks[i].type == block_type) {
1091			r = adev->ip_blocks[i].funcs->set_powergating_state((void *)adev,
1092									    state);
 
 
1093			if (r)
1094				return r;
 
1095		}
1096	}
1097	return r;
1098}
1099
1100const struct amdgpu_ip_block_version * amdgpu_get_ip_block(
1101					struct amdgpu_device *adev,
1102					enum amd_ip_block_type type)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1103{
1104	int i;
1105
1106	for (i = 0; i < adev->num_ip_blocks; i++)
1107		if (adev->ip_blocks[i].type == type)
1108			return &adev->ip_blocks[i];
1109
1110	return NULL;
1111}
1112
1113/**
1114 * amdgpu_ip_block_version_cmp
1115 *
1116 * @adev: amdgpu_device pointer
1117 * @type: enum amd_ip_block_type
1118 * @major: major version
1119 * @minor: minor version
1120 *
1121 * return 0 if equal or greater
1122 * return 1 if smaller or the ip_block doesn't exist
1123 */
1124int amdgpu_ip_block_version_cmp(struct amdgpu_device *adev,
1125				enum amd_ip_block_type type,
1126				u32 major, u32 minor)
1127{
1128	const struct amdgpu_ip_block_version *ip_block;
1129	ip_block = amdgpu_get_ip_block(adev, type);
1130
1131	if (ip_block && ((ip_block->major > major) ||
1132			((ip_block->major == major) &&
1133			(ip_block->minor >= minor))))
1134		return 0;
1135
1136	return 1;
1137}
1138
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1139static int amdgpu_early_init(struct amdgpu_device *adev)
1140{
1141	int i, r;
1142
 
 
1143	switch (adev->asic_type) {
1144	case CHIP_TOPAZ:
1145	case CHIP_TONGA:
1146	case CHIP_FIJI:
 
 
 
1147	case CHIP_CARRIZO:
1148	case CHIP_STONEY:
1149		if (adev->asic_type == CHIP_CARRIZO || adev->asic_type == CHIP_STONEY)
1150			adev->family = AMDGPU_FAMILY_CZ;
1151		else
1152			adev->family = AMDGPU_FAMILY_VI;
1153
1154		r = vi_set_ip_blocks(adev);
1155		if (r)
1156			return r;
1157		break;
 
 
 
 
 
 
 
 
 
 
 
 
1158#ifdef CONFIG_DRM_AMDGPU_CIK
1159	case CHIP_BONAIRE:
1160	case CHIP_HAWAII:
1161	case CHIP_KAVERI:
1162	case CHIP_KABINI:
1163	case CHIP_MULLINS:
1164		if ((adev->asic_type == CHIP_BONAIRE) || (adev->asic_type == CHIP_HAWAII))
1165			adev->family = AMDGPU_FAMILY_CI;
1166		else
1167			adev->family = AMDGPU_FAMILY_KV;
1168
1169		r = cik_set_ip_blocks(adev);
1170		if (r)
1171			return r;
1172		break;
1173#endif
1174	default:
1175		/* FIXME: not supported yet */
1176		return -EINVAL;
1177	}
1178
1179	adev->ip_block_status = kcalloc(adev->num_ip_blocks,
1180					sizeof(struct amdgpu_ip_block_status), GFP_KERNEL);
1181	if (adev->ip_block_status == NULL)
1182		return -ENOMEM;
1183
1184	if (adev->ip_blocks == NULL) {
1185		DRM_ERROR("No IP blocks found!\n");
1186		return r;
1187	}
1188
1189	for (i = 0; i < adev->num_ip_blocks; i++) {
1190		if ((amdgpu_ip_block_mask & (1 << i)) == 0) {
1191			DRM_ERROR("disabled ip block: %d\n", i);
1192			adev->ip_block_status[i].valid = false;
1193		} else {
1194			if (adev->ip_blocks[i].funcs->early_init) {
1195				r = adev->ip_blocks[i].funcs->early_init((void *)adev);
1196				if (r == -ENOENT) {
1197					adev->ip_block_status[i].valid = false;
1198				} else if (r) {
1199					DRM_ERROR("early_init %d failed %d\n", i, r);
 
1200					return r;
1201				} else {
1202					adev->ip_block_status[i].valid = true;
1203				}
1204			} else {
1205				adev->ip_block_status[i].valid = true;
1206			}
1207		}
1208	}
1209
 
 
 
1210	return 0;
1211}
1212
1213static int amdgpu_init(struct amdgpu_device *adev)
1214{
1215	int i, r;
1216
1217	for (i = 0; i < adev->num_ip_blocks; i++) {
1218		if (!adev->ip_block_status[i].valid)
1219			continue;
1220		r = adev->ip_blocks[i].funcs->sw_init((void *)adev);
1221		if (r) {
1222			DRM_ERROR("sw_init %d failed %d\n", i, r);
 
1223			return r;
1224		}
1225		adev->ip_block_status[i].sw = true;
1226		/* need to do gmc hw init early so we can allocate gpu mem */
1227		if (adev->ip_blocks[i].type == AMD_IP_BLOCK_TYPE_GMC) {
1228			r = amdgpu_vram_scratch_init(adev);
1229			if (r) {
1230				DRM_ERROR("amdgpu_vram_scratch_init failed %d\n", r);
1231				return r;
1232			}
1233			r = adev->ip_blocks[i].funcs->hw_init((void *)adev);
1234			if (r) {
1235				DRM_ERROR("hw_init %d failed %d\n", i, r);
1236				return r;
1237			}
1238			r = amdgpu_wb_init(adev);
1239			if (r) {
1240				DRM_ERROR("amdgpu_wb_init failed %d\n", r);
1241				return r;
1242			}
1243			adev->ip_block_status[i].hw = true;
1244		}
1245	}
1246
1247	for (i = 0; i < adev->num_ip_blocks; i++) {
1248		if (!adev->ip_block_status[i].sw)
1249			continue;
1250		/* gmc hw init is done early */
1251		if (adev->ip_blocks[i].type == AMD_IP_BLOCK_TYPE_GMC)
1252			continue;
1253		r = adev->ip_blocks[i].funcs->hw_init((void *)adev);
1254		if (r) {
1255			DRM_ERROR("hw_init %d failed %d\n", i, r);
 
1256			return r;
1257		}
1258		adev->ip_block_status[i].hw = true;
1259	}
1260
1261	return 0;
1262}
1263
1264static int amdgpu_late_init(struct amdgpu_device *adev)
1265{
1266	int i = 0, r;
1267
1268	for (i = 0; i < adev->num_ip_blocks; i++) {
1269		if (!adev->ip_block_status[i].valid)
1270			continue;
1271		/* enable clockgating to save power */
1272		r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev,
1273								    AMD_CG_STATE_GATE);
1274		if (r) {
1275			DRM_ERROR("set_clockgating_state(gate) %d failed %d\n", i, r);
1276			return r;
 
 
1277		}
1278		if (adev->ip_blocks[i].funcs->late_init) {
1279			r = adev->ip_blocks[i].funcs->late_init((void *)adev);
 
 
 
 
1280			if (r) {
1281				DRM_ERROR("late_init %d failed %d\n", i, r);
 
1282				return r;
1283			}
1284		}
1285	}
1286
1287	return 0;
1288}
1289
1290static int amdgpu_fini(struct amdgpu_device *adev)
1291{
1292	int i, r;
1293
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1294	for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
1295		if (!adev->ip_block_status[i].hw)
1296			continue;
1297		if (adev->ip_blocks[i].type == AMD_IP_BLOCK_TYPE_GMC) {
1298			amdgpu_wb_fini(adev);
1299			amdgpu_vram_scratch_fini(adev);
1300		}
1301		/* ungate blocks before hw fini so that we can shutdown the blocks safely */
1302		r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev,
1303								    AMD_CG_STATE_UNGATE);
1304		if (r) {
1305			DRM_ERROR("set_clockgating_state(ungate) %d failed %d\n", i, r);
1306			return r;
 
 
 
 
 
1307		}
1308		r = adev->ip_blocks[i].funcs->hw_fini((void *)adev);
 
1309		/* XXX handle errors */
1310		if (r) {
1311			DRM_DEBUG("hw_fini %d failed %d\n", i, r);
 
1312		}
1313		adev->ip_block_status[i].hw = false;
 
1314	}
1315
1316	for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
1317		if (!adev->ip_block_status[i].sw)
1318			continue;
1319		r = adev->ip_blocks[i].funcs->sw_fini((void *)adev);
1320		/* XXX handle errors */
1321		if (r) {
1322			DRM_DEBUG("sw_fini %d failed %d\n", i, r);
 
1323		}
1324		adev->ip_block_status[i].sw = false;
1325		adev->ip_block_status[i].valid = false;
 
 
 
 
 
 
 
 
1326	}
1327
1328	return 0;
1329}
1330
1331static int amdgpu_suspend(struct amdgpu_device *adev)
1332{
1333	int i, r;
1334
 
 
 
 
 
 
 
1335	for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
1336		if (!adev->ip_block_status[i].valid)
1337			continue;
1338		/* ungate blocks so that suspend can properly shut them down */
1339		r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev,
1340								    AMD_CG_STATE_UNGATE);
1341		if (r) {
1342			DRM_ERROR("set_clockgating_state(ungate) %d failed %d\n", i, r);
 
 
 
1343		}
1344		/* XXX handle errors */
1345		r = adev->ip_blocks[i].funcs->suspend(adev);
1346		/* XXX handle errors */
1347		if (r) {
1348			DRM_ERROR("suspend %d failed %d\n", i, r);
 
1349		}
1350	}
1351
1352	return 0;
1353}
1354
1355static int amdgpu_resume(struct amdgpu_device *adev)
1356{
1357	int i, r;
1358
1359	for (i = 0; i < adev->num_ip_blocks; i++) {
1360		if (!adev->ip_block_status[i].valid)
1361			continue;
1362		r = adev->ip_blocks[i].funcs->resume(adev);
1363		if (r) {
1364			DRM_ERROR("resume %d failed %d\n", i, r);
 
1365			return r;
1366		}
1367	}
1368
1369	return 0;
1370}
1371
 
 
 
 
 
 
1372/**
1373 * amdgpu_device_init - initialize the driver
1374 *
1375 * @adev: amdgpu_device pointer
1376 * @pdev: drm dev pointer
1377 * @pdev: pci dev pointer
1378 * @flags: driver flags
1379 *
1380 * Initializes the driver info and hw (all asics).
1381 * Returns 0 for success or an error on failure.
1382 * Called at driver startup.
1383 */
1384int amdgpu_device_init(struct amdgpu_device *adev,
1385		       struct drm_device *ddev,
1386		       struct pci_dev *pdev,
1387		       uint32_t flags)
1388{
1389	int r, i;
1390	bool runtime = false;
 
1391
1392	adev->shutdown = false;
1393	adev->dev = &pdev->dev;
1394	adev->ddev = ddev;
1395	adev->pdev = pdev;
1396	adev->flags = flags;
1397	adev->asic_type = flags & AMD_ASIC_MASK;
1398	adev->is_atom_bios = false;
1399	adev->usec_timeout = AMDGPU_MAX_USEC_TIMEOUT;
1400	adev->mc.gtt_size = 512 * 1024 * 1024;
1401	adev->accel_working = false;
1402	adev->num_rings = 0;
1403	adev->mman.buffer_funcs = NULL;
1404	adev->mman.buffer_funcs_ring = NULL;
1405	adev->vm_manager.vm_pte_funcs = NULL;
1406	adev->vm_manager.vm_pte_num_rings = 0;
1407	adev->gart.gart_funcs = NULL;
1408	adev->fence_context = fence_context_alloc(AMDGPU_MAX_RINGS);
1409
1410	adev->smc_rreg = &amdgpu_invalid_rreg;
1411	adev->smc_wreg = &amdgpu_invalid_wreg;
1412	adev->pcie_rreg = &amdgpu_invalid_rreg;
1413	adev->pcie_wreg = &amdgpu_invalid_wreg;
 
 
1414	adev->uvd_ctx_rreg = &amdgpu_invalid_rreg;
1415	adev->uvd_ctx_wreg = &amdgpu_invalid_wreg;
1416	adev->didt_rreg = &amdgpu_invalid_rreg;
1417	adev->didt_wreg = &amdgpu_invalid_wreg;
 
 
1418	adev->audio_endpt_rreg = &amdgpu_block_invalid_rreg;
1419	adev->audio_endpt_wreg = &amdgpu_block_invalid_wreg;
1420
 
1421	DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X 0x%02X).\n",
1422		 amdgpu_asic_name[adev->asic_type], pdev->vendor, pdev->device,
1423		 pdev->subsystem_vendor, pdev->subsystem_device, pdev->revision);
1424
1425	/* mutex initialization are all done here so we
1426	 * can recall function without having locking issues */
1427	mutex_init(&adev->vm_manager.lock);
1428	atomic_set(&adev->irq.ih.lock, 0);
1429	mutex_init(&adev->pm.mutex);
1430	mutex_init(&adev->gfx.gpu_clock_mutex);
1431	mutex_init(&adev->srbm_mutex);
1432	mutex_init(&adev->grbm_idx_mutex);
1433	mutex_init(&adev->mn_lock);
1434	hash_init(adev->mn_hash);
1435
1436	amdgpu_check_arguments(adev);
1437
1438	/* Registers mapping */
1439	/* TODO: block userspace mapping of io register */
1440	spin_lock_init(&adev->mmio_idx_lock);
1441	spin_lock_init(&adev->smc_idx_lock);
1442	spin_lock_init(&adev->pcie_idx_lock);
1443	spin_lock_init(&adev->uvd_ctx_idx_lock);
1444	spin_lock_init(&adev->didt_idx_lock);
 
1445	spin_lock_init(&adev->audio_endpt_idx_lock);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1446
1447	adev->rmmio_base = pci_resource_start(adev->pdev, 5);
1448	adev->rmmio_size = pci_resource_len(adev->pdev, 5);
1449	adev->rmmio = ioremap(adev->rmmio_base, adev->rmmio_size);
1450	if (adev->rmmio == NULL) {
1451		return -ENOMEM;
1452	}
1453	DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)adev->rmmio_base);
1454	DRM_INFO("register mmio size: %u\n", (unsigned)adev->rmmio_size);
1455
1456	/* doorbell bar mapping */
1457	amdgpu_doorbell_init(adev);
 
1458
1459	/* io port mapping */
1460	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
1461		if (pci_resource_flags(adev->pdev, i) & IORESOURCE_IO) {
1462			adev->rio_mem_size = pci_resource_len(adev->pdev, i);
1463			adev->rio_mem = pci_iomap(adev->pdev, i, adev->rio_mem_size);
1464			break;
1465		}
1466	}
1467	if (adev->rio_mem == NULL)
1468		DRM_ERROR("Unable to find PCI I/O BAR\n");
1469
1470	/* early init functions */
1471	r = amdgpu_early_init(adev);
1472	if (r)
1473		return r;
1474
1475	/* if we have > 1 VGA cards, then disable the amdgpu VGA resources */
1476	/* this will fail for cards that aren't VGA class devices, just
1477	 * ignore it */
1478	vga_client_register(adev->pdev, adev, NULL, amdgpu_vga_set_decode);
1479
1480	if (amdgpu_runtime_pm == 1)
1481		runtime = true;
1482	if (amdgpu_device_is_px(ddev))
1483		runtime = true;
1484	vga_switcheroo_register_client(adev->pdev, &amdgpu_switcheroo_ops, runtime);
1485	if (runtime)
1486		vga_switcheroo_init_domain_pm_ops(adev->dev, &adev->vga_pm_domain);
1487
1488	/* Read BIOS */
1489	if (!amdgpu_get_bios(adev))
1490		return -EINVAL;
 
 
1491	/* Must be an ATOMBIOS */
1492	if (!adev->is_atom_bios) {
1493		dev_err(adev->dev, "Expecting atombios for GPU\n");
1494		return -EINVAL;
 
1495	}
1496	r = amdgpu_atombios_init(adev);
1497	if (r) {
1498		dev_err(adev->dev, "amdgpu_atombios_init failed\n");
1499		return r;
1500	}
1501
1502	/* See if the asic supports SR-IOV */
1503	adev->virtualization.supports_sr_iov =
1504		amdgpu_atombios_has_gpu_virtualization_table(adev);
1505
1506	/* Post card if necessary */
1507	if (!amdgpu_card_posted(adev) ||
1508	    adev->virtualization.supports_sr_iov) {
1509		if (!adev->bios) {
1510			dev_err(adev->dev, "Card not posted and no BIOS - ignoring\n");
1511			return -EINVAL;
 
1512		}
1513		DRM_INFO("GPU not posted. posting now...\n");
1514		amdgpu_atom_asic_init(adev->mode_info.atom_context);
 
 
 
 
 
 
1515	}
1516
1517	/* Initialize clocks */
1518	r = amdgpu_atombios_get_clock_info(adev);
1519	if (r) {
1520		dev_err(adev->dev, "amdgpu_atombios_get_clock_info failed\n");
1521		return r;
1522	}
1523	/* init i2c buses */
1524	amdgpu_atombios_i2c_init(adev);
1525
1526	/* Fence driver */
1527	r = amdgpu_fence_driver_init(adev);
1528	if (r) {
1529		dev_err(adev->dev, "amdgpu_fence_driver_init failed\n");
1530		return r;
1531	}
1532
1533	/* init the mode config */
1534	drm_mode_config_init(adev->ddev);
1535
1536	r = amdgpu_init(adev);
1537	if (r) {
1538		dev_err(adev->dev, "amdgpu_init failed\n");
1539		amdgpu_fini(adev);
1540		return r;
1541	}
1542
1543	adev->accel_working = true;
1544
 
 
 
 
 
 
 
 
1545	amdgpu_fbdev_init(adev);
1546
1547	r = amdgpu_ib_pool_init(adev);
1548	if (r) {
1549		dev_err(adev->dev, "IB initialization failed (%d).\n", r);
1550		return r;
1551	}
1552
1553	r = amdgpu_ib_ring_tests(adev);
1554	if (r)
1555		DRM_ERROR("ib ring test failed (%d).\n", r);
1556
1557	r = amdgpu_gem_debugfs_init(adev);
1558	if (r) {
1559		DRM_ERROR("registering gem debugfs failed (%d).\n", r);
1560	}
1561
1562	r = amdgpu_debugfs_regs_init(adev);
1563	if (r) {
1564		DRM_ERROR("registering register debugfs failed (%d).\n", r);
1565	}
1566
 
 
 
 
 
 
1567	if ((amdgpu_testing & 1)) {
1568		if (adev->accel_working)
1569			amdgpu_test_moves(adev);
1570		else
1571			DRM_INFO("amdgpu: acceleration disabled, skipping move tests\n");
1572	}
1573	if ((amdgpu_testing & 2)) {
1574		if (adev->accel_working)
1575			amdgpu_test_syncing(adev);
1576		else
1577			DRM_INFO("amdgpu: acceleration disabled, skipping sync tests\n");
1578	}
1579	if (amdgpu_benchmarking) {
1580		if (adev->accel_working)
1581			amdgpu_benchmark(adev, amdgpu_benchmarking);
1582		else
1583			DRM_INFO("amdgpu: acceleration disabled, skipping benchmarks\n");
1584	}
1585
1586	/* enable clockgating, etc. after ib tests, etc. since some blocks require
1587	 * explicit gating rather than handling it automatically.
1588	 */
1589	r = amdgpu_late_init(adev);
1590	if (r) {
1591		dev_err(adev->dev, "amdgpu_late_init failed\n");
1592		return r;
1593	}
1594
1595	return 0;
 
 
 
 
 
1596}
1597
1598static void amdgpu_debugfs_remove_files(struct amdgpu_device *adev);
1599
1600/**
1601 * amdgpu_device_fini - tear down the driver
1602 *
1603 * @adev: amdgpu_device pointer
1604 *
1605 * Tear down the driver info (all asics).
1606 * Called at driver shutdown.
1607 */
1608void amdgpu_device_fini(struct amdgpu_device *adev)
1609{
1610	int r;
1611
1612	DRM_INFO("amdgpu: finishing device.\n");
1613	adev->shutdown = true;
 
1614	/* evict vram memory */
1615	amdgpu_bo_evict_vram(adev);
1616	amdgpu_ib_pool_fini(adev);
1617	amdgpu_fence_driver_fini(adev);
1618	amdgpu_fbdev_fini(adev);
1619	r = amdgpu_fini(adev);
1620	kfree(adev->ip_block_status);
1621	adev->ip_block_status = NULL;
1622	adev->accel_working = false;
1623	/* free i2c buses */
1624	amdgpu_i2c_fini(adev);
1625	amdgpu_atombios_fini(adev);
1626	kfree(adev->bios);
1627	adev->bios = NULL;
1628	vga_switcheroo_unregister_client(adev->pdev);
 
 
1629	vga_client_register(adev->pdev, NULL, NULL, NULL);
1630	if (adev->rio_mem)
1631		pci_iounmap(adev->pdev, adev->rio_mem);
1632	adev->rio_mem = NULL;
1633	iounmap(adev->rmmio);
1634	adev->rmmio = NULL;
1635	amdgpu_doorbell_fini(adev);
 
1636	amdgpu_debugfs_regs_cleanup(adev);
1637	amdgpu_debugfs_remove_files(adev);
1638}
1639
1640
1641/*
1642 * Suspend & resume.
1643 */
1644/**
1645 * amdgpu_suspend_kms - initiate device suspend
1646 *
1647 * @pdev: drm dev pointer
1648 * @state: suspend state
1649 *
1650 * Puts the hw in the suspend state (all asics).
1651 * Returns 0 for success or an error on failure.
1652 * Called at driver suspend.
1653 */
1654int amdgpu_suspend_kms(struct drm_device *dev, bool suspend, bool fbcon)
1655{
1656	struct amdgpu_device *adev;
1657	struct drm_crtc *crtc;
1658	struct drm_connector *connector;
1659	int r;
1660
1661	if (dev == NULL || dev->dev_private == NULL) {
1662		return -ENODEV;
1663	}
1664
1665	adev = dev->dev_private;
1666
1667	if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1668		return 0;
1669
1670	drm_kms_helper_poll_disable(dev);
1671
1672	/* turn off display hw */
1673	drm_modeset_lock_all(dev);
1674	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1675		drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
1676	}
1677	drm_modeset_unlock_all(dev);
1678
1679	/* unpin the front buffers and cursors */
1680	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1681		struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
1682		struct amdgpu_framebuffer *rfb = to_amdgpu_framebuffer(crtc->primary->fb);
1683		struct amdgpu_bo *robj;
1684
1685		if (amdgpu_crtc->cursor_bo) {
1686			struct amdgpu_bo *aobj = gem_to_amdgpu_bo(amdgpu_crtc->cursor_bo);
1687			r = amdgpu_bo_reserve(aobj, false);
1688			if (r == 0) {
1689				amdgpu_bo_unpin(aobj);
1690				amdgpu_bo_unreserve(aobj);
1691			}
1692		}
1693
1694		if (rfb == NULL || rfb->obj == NULL) {
1695			continue;
1696		}
1697		robj = gem_to_amdgpu_bo(rfb->obj);
1698		/* don't unpin kernel fb objects */
1699		if (!amdgpu_fbdev_robj_is_fb(adev, robj)) {
1700			r = amdgpu_bo_reserve(robj, false);
1701			if (r == 0) {
1702				amdgpu_bo_unpin(robj);
1703				amdgpu_bo_unreserve(robj);
1704			}
1705		}
1706	}
1707	/* evict vram memory */
1708	amdgpu_bo_evict_vram(adev);
1709
1710	amdgpu_fence_driver_suspend(adev);
1711
1712	r = amdgpu_suspend(adev);
1713
1714	/* evict remaining vram memory */
 
 
 
1715	amdgpu_bo_evict_vram(adev);
1716
 
1717	pci_save_state(dev->pdev);
1718	if (suspend) {
1719		/* Shut down the device */
1720		pci_disable_device(dev->pdev);
1721		pci_set_power_state(dev->pdev, PCI_D3hot);
 
 
 
 
1722	}
1723
1724	if (fbcon) {
1725		console_lock();
1726		amdgpu_fbdev_set_suspend(adev, 1);
1727		console_unlock();
1728	}
1729	return 0;
1730}
1731
1732/**
1733 * amdgpu_resume_kms - initiate device resume
1734 *
1735 * @pdev: drm dev pointer
1736 *
1737 * Bring the hw back to operating state (all asics).
1738 * Returns 0 for success or an error on failure.
1739 * Called at driver resume.
1740 */
1741int amdgpu_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
1742{
1743	struct drm_connector *connector;
1744	struct amdgpu_device *adev = dev->dev_private;
1745	struct drm_crtc *crtc;
1746	int r;
1747
1748	if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1749		return 0;
1750
1751	if (fbcon) {
1752		console_lock();
1753	}
1754	if (resume) {
1755		pci_set_power_state(dev->pdev, PCI_D0);
1756		pci_restore_state(dev->pdev);
1757		if (pci_enable_device(dev->pdev)) {
 
1758			if (fbcon)
1759				console_unlock();
1760			return -1;
1761		}
1762	}
 
1763
1764	/* post card */
1765	if (!amdgpu_card_posted(adev))
1766		amdgpu_atom_asic_init(adev->mode_info.atom_context);
 
 
 
1767
1768	r = amdgpu_resume(adev);
1769	if (r)
1770		DRM_ERROR("amdgpu_resume failed (%d).\n", r);
1771
1772	amdgpu_fence_driver_resume(adev);
1773
1774	if (resume) {
1775		r = amdgpu_ib_ring_tests(adev);
1776		if (r)
1777			DRM_ERROR("ib ring test failed (%d).\n", r);
1778	}
1779
1780	r = amdgpu_late_init(adev);
1781	if (r)
1782		return r;
1783
1784	/* pin cursors */
1785	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1786		struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
1787
1788		if (amdgpu_crtc->cursor_bo) {
1789			struct amdgpu_bo *aobj = gem_to_amdgpu_bo(amdgpu_crtc->cursor_bo);
1790			r = amdgpu_bo_reserve(aobj, false);
1791			if (r == 0) {
1792				r = amdgpu_bo_pin(aobj,
1793						  AMDGPU_GEM_DOMAIN_VRAM,
1794						  &amdgpu_crtc->cursor_addr);
1795				if (r != 0)
1796					DRM_ERROR("Failed to pin cursor BO (%d)\n", r);
1797				amdgpu_bo_unreserve(aobj);
1798			}
1799		}
1800	}
1801
1802	/* blat the mode back in */
1803	if (fbcon) {
1804		drm_helper_resume_force_mode(dev);
1805		/* turn on display hw */
1806		drm_modeset_lock_all(dev);
1807		list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1808			drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
1809		}
1810		drm_modeset_unlock_all(dev);
1811	}
1812
1813	drm_kms_helper_poll_enable(dev);
 
 
 
 
 
 
 
 
 
 
 
 
 
1814	drm_helper_hpd_irq_event(dev);
 
 
 
1815
1816	if (fbcon) {
1817		amdgpu_fbdev_set_suspend(adev, 0);
1818		console_unlock();
1819	}
1820
1821	return 0;
1822}
1823
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1824/**
1825 * amdgpu_gpu_reset - reset the asic
1826 *
1827 * @adev: amdgpu device pointer
1828 *
1829 * Attempt the reset the GPU if it has hung (all asics).
1830 * Returns 0 for success or an error on failure.
1831 */
1832int amdgpu_gpu_reset(struct amdgpu_device *adev)
1833{
1834	unsigned ring_sizes[AMDGPU_MAX_RINGS];
1835	uint32_t *ring_data[AMDGPU_MAX_RINGS];
1836
1837	bool saved = false;
1838
1839	int i, r;
1840	int resched;
 
 
 
 
 
 
1841
1842	atomic_inc(&adev->gpu_reset_counter);
1843
1844	/* block TTM */
1845	resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev);
1846
1847	r = amdgpu_suspend(adev);
1848
1849	for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
1850		struct amdgpu_ring *ring = adev->rings[i];
 
1851		if (!ring)
1852			continue;
 
 
 
 
 
 
 
1853
1854		ring_sizes[i] = amdgpu_ring_backup(ring, &ring_data[i]);
1855		if (ring_sizes[i]) {
1856			saved = true;
1857			dev_info(adev->dev, "Saved %d dwords of commands "
1858				 "on ring %d.\n", ring_sizes[i], i);
 
 
1859		}
1860	}
1861
 
 
 
1862retry:
1863	r = amdgpu_asic_reset(adev);
1864	/* post card */
1865	amdgpu_atom_asic_init(adev->mode_info.atom_context);
 
 
 
 
 
 
 
 
1866
1867	if (!r) {
1868		dev_info(adev->dev, "GPU reset succeeded, trying to resume\n");
1869		r = amdgpu_resume(adev);
 
1870	}
1871
1872	if (!r) {
1873		for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
1874			struct amdgpu_ring *ring = adev->rings[i];
1875			if (!ring)
1876				continue;
1877
1878			amdgpu_ring_restore(ring, ring_sizes[i], ring_data[i]);
1879			ring_sizes[i] = 0;
1880			ring_data[i] = NULL;
1881		}
1882
1883		r = amdgpu_ib_ring_tests(adev);
1884		if (r) {
1885			dev_err(adev->dev, "ib ring test failed (%d).\n", r);
1886			if (saved) {
1887				saved = false;
1888				r = amdgpu_suspend(adev);
1889				goto retry;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1890			}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1891		}
1892	} else {
1893		amdgpu_fence_driver_force_completion(adev);
1894		for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
1895			if (adev->rings[i])
1896				kfree(ring_data[i]);
 
1897		}
1898	}
1899
1900	drm_helper_resume_force_mode(adev->ddev);
1901
1902	ttm_bo_unlock_delayed_workqueue(&adev->mman.bdev, resched);
1903	if (r) {
1904		/* bad news, how to tell it to userspace ? */
1905		dev_info(adev->dev, "GPU reset failed\n");
1906	}
1907
1908	return r;
1909}
1910
1911#define AMDGPU_DEFAULT_PCIE_GEN_MASK 0x30007  /* gen: chipset 1/2, asic 1/2/3 */
1912#define AMDGPU_DEFAULT_PCIE_MLW_MASK 0x2f0000 /* 1/2/4/8/16 lanes */
1913
1914void amdgpu_get_pcie_info(struct amdgpu_device *adev)
1915{
1916	u32 mask;
1917	int ret;
1918
1919	if (amdgpu_pcie_gen_cap)
1920		adev->pm.pcie_gen_mask = amdgpu_pcie_gen_cap;
1921
1922	if (amdgpu_pcie_lane_cap)
1923		adev->pm.pcie_mlw_mask = amdgpu_pcie_lane_cap;
1924
1925	/* covers APUs as well */
1926	if (pci_is_root_bus(adev->pdev->bus)) {
1927		if (adev->pm.pcie_gen_mask == 0)
1928			adev->pm.pcie_gen_mask = AMDGPU_DEFAULT_PCIE_GEN_MASK;
1929		if (adev->pm.pcie_mlw_mask == 0)
1930			adev->pm.pcie_mlw_mask = AMDGPU_DEFAULT_PCIE_MLW_MASK;
1931		return;
1932	}
1933
1934	if (adev->pm.pcie_gen_mask == 0) {
1935		ret = drm_pcie_get_speed_cap_mask(adev->ddev, &mask);
1936		if (!ret) {
1937			adev->pm.pcie_gen_mask = (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 |
1938						  CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 |
1939						  CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3);
1940
1941			if (mask & DRM_PCIE_SPEED_25)
1942				adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1;
1943			if (mask & DRM_PCIE_SPEED_50)
1944				adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2;
1945			if (mask & DRM_PCIE_SPEED_80)
1946				adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3;
1947		} else {
1948			adev->pm.pcie_gen_mask = AMDGPU_DEFAULT_PCIE_GEN_MASK;
1949		}
1950	}
1951	if (adev->pm.pcie_mlw_mask == 0) {
1952		ret = drm_pcie_get_max_link_width(adev->ddev, &mask);
1953		if (!ret) {
1954			switch (mask) {
1955			case 32:
1956				adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X32 |
1957							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 |
1958							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
1959							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
1960							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
1961							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
1962							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
1963				break;
1964			case 16:
1965				adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 |
1966							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
1967							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
1968							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
1969							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
1970							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
1971				break;
1972			case 12:
1973				adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
1974							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
1975							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
1976							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
1977							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
1978				break;
1979			case 8:
1980				adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
1981							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
1982							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
1983							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
1984				break;
1985			case 4:
1986				adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
1987							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
1988							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
1989				break;
1990			case 2:
1991				adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
1992							  CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
1993				break;
1994			case 1:
1995				adev->pm.pcie_mlw_mask = CAIL_PCIE_LINK_WIDTH_SUPPORT_X1;
1996				break;
1997			default:
1998				break;
1999			}
2000		} else {
2001			adev->pm.pcie_mlw_mask = AMDGPU_DEFAULT_PCIE_MLW_MASK;
2002		}
2003	}
2004}
2005
2006/*
2007 * Debugfs
2008 */
2009int amdgpu_debugfs_add_files(struct amdgpu_device *adev,
2010			     struct drm_info_list *files,
2011			     unsigned nfiles)
2012{
2013	unsigned i;
2014
2015	for (i = 0; i < adev->debugfs_count; i++) {
2016		if (adev->debugfs[i].files == files) {
2017			/* Already registered */
2018			return 0;
2019		}
2020	}
2021
2022	i = adev->debugfs_count + 1;
2023	if (i > AMDGPU_DEBUGFS_MAX_COMPONENTS) {
2024		DRM_ERROR("Reached maximum number of debugfs components.\n");
2025		DRM_ERROR("Report so we increase "
2026			  "AMDGPU_DEBUGFS_MAX_COMPONENTS.\n");
2027		return -EINVAL;
2028	}
2029	adev->debugfs[adev->debugfs_count].files = files;
2030	adev->debugfs[adev->debugfs_count].num_files = nfiles;
2031	adev->debugfs_count = i;
2032#if defined(CONFIG_DEBUG_FS)
2033	drm_debugfs_create_files(files, nfiles,
2034				 adev->ddev->control->debugfs_root,
2035				 adev->ddev->control);
2036	drm_debugfs_create_files(files, nfiles,
2037				 adev->ddev->primary->debugfs_root,
2038				 adev->ddev->primary);
2039#endif
2040	return 0;
2041}
2042
2043static void amdgpu_debugfs_remove_files(struct amdgpu_device *adev)
2044{
2045#if defined(CONFIG_DEBUG_FS)
2046	unsigned i;
2047
2048	for (i = 0; i < adev->debugfs_count; i++) {
2049		drm_debugfs_remove_files(adev->debugfs[i].files,
2050					 adev->debugfs[i].num_files,
2051					 adev->ddev->control);
2052		drm_debugfs_remove_files(adev->debugfs[i].files,
2053					 adev->debugfs[i].num_files,
2054					 adev->ddev->primary);
2055	}
2056#endif
2057}
2058
2059#if defined(CONFIG_DEBUG_FS)
2060
2061static ssize_t amdgpu_debugfs_regs_read(struct file *f, char __user *buf,
2062					size_t size, loff_t *pos)
2063{
2064	struct amdgpu_device *adev = f->f_inode->i_private;
2065	ssize_t result = 0;
2066	int r;
 
 
2067
2068	if (size & 0x3 || *pos & 0x3)
2069		return -EINVAL;
2070
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2071	while (size) {
2072		uint32_t value;
2073
2074		if (*pos > adev->rmmio_size)
2075			return result;
2076
2077		value = RREG32(*pos >> 2);
2078		r = put_user(value, (uint32_t *)buf);
2079		if (r)
2080			return r;
 
 
2081
2082		result += 4;
2083		buf += 4;
2084		*pos += 4;
2085		size -= 4;
2086	}
2087
 
 
 
 
 
 
 
 
 
2088	return result;
2089}
2090
2091static ssize_t amdgpu_debugfs_regs_write(struct file *f, const char __user *buf,
2092					 size_t size, loff_t *pos)
2093{
2094	struct amdgpu_device *adev = f->f_inode->i_private;
2095	ssize_t result = 0;
2096	int r;
 
 
2097
2098	if (size & 0x3 || *pos & 0x3)
2099		return -EINVAL;
2100
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2101	while (size) {
2102		uint32_t value;
2103
2104		if (*pos > adev->rmmio_size)
2105			return result;
2106
2107		r = get_user(value, (uint32_t *)buf);
2108		if (r)
2109			return r;
2110
2111		WREG32(*pos >> 2, value);
2112
2113		result += 4;
2114		buf += 4;
2115		*pos += 4;
2116		size -= 4;
2117	}
2118
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2119	return result;
2120}
2121
2122static const struct file_operations amdgpu_debugfs_regs_fops = {
2123	.owner = THIS_MODULE,
2124	.read = amdgpu_debugfs_regs_read,
2125	.write = amdgpu_debugfs_regs_write,
2126	.llseek = default_llseek
2127};
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2128
2129static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev)
2130{
2131	struct drm_minor *minor = adev->ddev->primary;
2132	struct dentry *ent, *root = minor->debugfs_root;
 
2133
2134	ent = debugfs_create_file("amdgpu_regs", S_IFREG | S_IRUGO, root,
2135				  adev, &amdgpu_debugfs_regs_fops);
2136	if (IS_ERR(ent))
2137		return PTR_ERR(ent);
2138	i_size_write(ent->d_inode, adev->rmmio_size);
2139	adev->debugfs_regs = ent;
 
 
 
 
 
 
 
 
 
 
2140
2141	return 0;
2142}
2143
2144static void amdgpu_debugfs_regs_cleanup(struct amdgpu_device *adev)
2145{
2146	debugfs_remove(adev->debugfs_regs);
2147	adev->debugfs_regs = NULL;
 
 
 
 
 
 
2148}
2149
2150int amdgpu_debugfs_init(struct drm_minor *minor)
2151{
2152	return 0;
2153}
2154
2155void amdgpu_debugfs_cleanup(struct drm_minor *minor)
2156{
2157}
2158#else
2159static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev)
2160{
2161	return 0;
2162}
2163static void amdgpu_debugfs_regs_cleanup(struct amdgpu_device *adev) { }
2164#endif