drivers/gpu/drm/amd/amdgpu/gfxhub_v2_0.c - linux - Git at Google

 /*
  * Copyright 2019 Advanced Micro Devices, Inc.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  * OTHER DEALINGS IN THE SOFTWARE.
  *
  */

 #include "amdgpu.h"
 #include "gfxhub_v2_0.h"

 #include "gc/gc_10_1_0_offset.h"
 #include "gc/gc_10_1_0_sh_mask.h"
 #include "gc/gc_10_1_0_default.h"
 #include "navi10_enum.h"

 #include "soc15_common.h"

 static const char *gfxhub_client_ids[] = {
 	"CB/DB",
 	"Reserved",
 	"GE1",
 	"GE2",
 	"CPF",
 	"CPC",
 	"CPG",
 	"RLC",
 	"TCP",
 	"SQC (inst)",
 	"SQC (data)",
 	"SQG",
 	"Reserved",
 	"SDMA0",
 	"SDMA1",
 	"GCR",
 	"SDMA2",
 	"SDMA3",
 };

 static uint32_t gfxhub_v2_0_get_invalidate_req(unsigned int vmid,
 					       uint32_t flush_type)
 {
 	u32 req = 0;

 	/* invalidate using legacy mode on vmid*/
 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ,
 			    PER_VMID_INVALIDATE_REQ, 1 << vmid);
 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, FLUSH_TYPE, flush_type);
 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PTES, 1);
 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE0, 1);
 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE1, 1);
 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE2, 1);
 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L1_PTES, 1);
 	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ,
 			    CLEAR_PROTECTION_FAULT_STATUS_ADDR,	0);

 	return req;
 }

 static void
 gfxhub_v2_0_print_l2_protection_fault_status(struct amdgpu_device *adev,
 					     uint32_t status)
 {
 	u32 cid = REG_GET_FIELD(status,
 				GCVM_L2_PROTECTION_FAULT_STATUS, CID);

 	dev_err(adev->dev,
 		"GCVM_L2_PROTECTION_FAULT_STATUS:0x%08X\n",
 		status);
 	dev_err(adev->dev, "\t Faulty UTCL2 client ID: %s (0x%x)\n",
 		cid >= ARRAY_SIZE(gfxhub_client_ids) ? "unknown" : gfxhub_client_ids[cid],
 		cid);
 	dev_err(adev->dev, "\t MORE_FAULTS: 0x%lx\n",
 		REG_GET_FIELD(status,
 		GCVM_L2_PROTECTION_FAULT_STATUS, MORE_FAULTS));
 	dev_err(adev->dev, "\t WALKER_ERROR: 0x%lx\n",
 		REG_GET_FIELD(status,
 		GCVM_L2_PROTECTION_FAULT_STATUS, WALKER_ERROR));
 	dev_err(adev->dev, "\t PERMISSION_FAULTS: 0x%lx\n",
 		REG_GET_FIELD(status,
 		GCVM_L2_PROTECTION_FAULT_STATUS, PERMISSION_FAULTS));
 	dev_err(adev->dev, "\t MAPPING_ERROR: 0x%lx\n",
 		REG_GET_FIELD(status,
 		GCVM_L2_PROTECTION_FAULT_STATUS, MAPPING_ERROR));
 	dev_err(adev->dev, "\t RW: 0x%lx\n",
 		REG_GET_FIELD(status,
 		GCVM_L2_PROTECTION_FAULT_STATUS, RW));
 }

 static u64 gfxhub_v2_0_get_fb_location(struct amdgpu_device *adev)
 {
 	u64 base = RREG32_SOC15(GC, 0, mmGCMC_VM_FB_LOCATION_BASE);

 	base &= GCMC_VM_FB_LOCATION_BASE__FB_BASE_MASK;
 	base <<= 24;

 	return base;
 }

 static u64 gfxhub_v2_0_get_mc_fb_offset(struct amdgpu_device *adev)
 {
 	return (u64)RREG32_SOC15(GC, 0, mmGCMC_VM_FB_OFFSET) << 24;
 }

 static void gfxhub_v2_0_setup_vm_pt_regs(struct amdgpu_device *adev, uint32_t vmid,
 				uint64_t page_table_base)
 {
 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];

 	WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32,
 			    hub->ctx_addr_distance * vmid,
 			    lower_32_bits(page_table_base));

 	WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32,
 			    hub->ctx_addr_distance * vmid,
 			    upper_32_bits(page_table_base));
 }

 static void gfxhub_v2_0_init_gart_aperture_regs(struct amdgpu_device *adev)
 {
 	uint64_t pt_base = amdgpu_gmc_pd_addr(adev->gart.bo);

 	gfxhub_v2_0_setup_vm_pt_regs(adev, 0, pt_base);

 	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_START_ADDR_LO32,
 		     (u32)(adev->gmc.gart_start >> 12));
 	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_START_ADDR_HI32,
 		     (u32)(adev->gmc.gart_start >> 44));

 	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_END_ADDR_LO32,
 		     (u32)(adev->gmc.gart_end >> 12));
 	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_END_ADDR_HI32,
 		     (u32)(adev->gmc.gart_end >> 44));
 }

 static void gfxhub_v2_0_init_system_aperture_regs(struct amdgpu_device *adev)
 {
 	uint64_t value;

 	if (!amdgpu_sriov_vf(adev)) {
 		/* Program the AGP BAR */
 		WREG32_SOC15(GC, 0, mmGCMC_VM_AGP_BASE, 0);
 		WREG32_SOC15(GC, 0, mmGCMC_VM_AGP_BOT, adev->gmc.agp_start >> 24);
 		WREG32_SOC15(GC, 0, mmGCMC_VM_AGP_TOP, adev->gmc.agp_end >> 24);

 		/* Program the system aperture low logical page number. */
 		WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_LOW_ADDR,
 			     min(adev->gmc.fb_start, adev->gmc.agp_start) >> 18);
 		WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_HIGH_ADDR,
 			     max(adev->gmc.fb_end, adev->gmc.agp_end) >> 18);

 		/* Set default page address. */
 		value = amdgpu_gmc_vram_mc2pa(adev, adev->mem_scratch.gpu_addr);
 		WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_LSB,
 			     (u32)(value >> 12));
 		WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_MSB,
 			     (u32)(value >> 44));
 	}

 	/* Program "protection fault". */
 	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_LO32,
 		     (u32)(adev->dummy_page_addr >> 12));
 	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_HI32,
 		     (u32)((u64)adev->dummy_page_addr >> 44));

 	WREG32_FIELD15(GC, 0, GCVM_L2_PROTECTION_FAULT_CNTL2,
 		       ACTIVE_PAGE_MIGRATION_PTE_READ_RETRY, 1);
 }


 static void gfxhub_v2_0_init_tlb_regs(struct amdgpu_device *adev)
 {
 	uint32_t tmp;

 	/* Setup TLB control */
 	tmp = RREG32_SOC15(GC, 0, mmGCMC_VM_MX_L1_TLB_CNTL);

 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 1);
 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL, SYSTEM_ACCESS_MODE, 3);
 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
 			    ENABLE_ADVANCED_DRIVER_MODEL, 1);
 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
 			    SYSTEM_APERTURE_UNMAPPED_ACCESS, 0);
 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
 			    MTYPE, MTYPE_UC); /* UC, uncached */

 	WREG32_SOC15(GC, 0, mmGCMC_VM_MX_L1_TLB_CNTL, tmp);
 }

 static void gfxhub_v2_0_init_cache_regs(struct amdgpu_device *adev)
 {
 	uint32_t tmp;

 	/* These regs are not accessible for VF, PF will program these in SRIOV */
 	if (amdgpu_sriov_vf(adev))
 		return;

 	/* Setup L2 cache */
 	tmp = RREG32_SOC15(GC, 0, mmGCVM_L2_CNTL);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, ENABLE_L2_CACHE, 1);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, ENABLE_L2_FRAGMENT_PROCESSING, 0);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL,
 			    ENABLE_DEFAULT_PAGE_OUT_TO_SYSTEM_MEMORY, 1);
 	/* XXX for emulation, Refer to closed source code.*/
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL,
 			    L2_PDE0_CACHE_TAG_GENERATION_MODE, 0);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, PDE_FAULT_CLASSIFICATION, 0);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, CONTEXT1_IDENTITY_ACCESS_MODE, 1);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, IDENTITY_MODE_FRAGMENT_SIZE, 0);
 	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL, tmp);

 	tmp = RREG32_SOC15(GC, 0, mmGCVM_L2_CNTL2);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL2, INVALIDATE_ALL_L1_TLBS, 1);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL2, INVALIDATE_L2_CACHE, 1);
 	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL2, tmp);

 	tmp = mmGCVM_L2_CNTL3_DEFAULT;
 	if (adev->gmc.translate_further) {
 		tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3, BANK_SELECT, 12);
 		tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3,
 				    L2_CACHE_BIGK_FRAGMENT_SIZE, 9);
 	} else {
 		tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3, BANK_SELECT, 9);
 		tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3,
 				    L2_CACHE_BIGK_FRAGMENT_SIZE, 6);
 	}
 	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL3, tmp);

 	tmp = mmGCVM_L2_CNTL4_DEFAULT;
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL4, VMC_TAP_PDE_REQUEST_PHYSICAL, 0);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL4, VMC_TAP_PTE_REQUEST_PHYSICAL, 0);
 	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL4, tmp);

 	tmp = mmGCVM_L2_CNTL5_DEFAULT;
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL5, L2_CACHE_SMALLK_FRAGMENT_SIZE, 0);
 	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL5, tmp);
 }

 static void gfxhub_v2_0_enable_system_domain(struct amdgpu_device *adev)
 {
 	uint32_t tmp;

 	tmp = RREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_CNTL);
 	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT0_CNTL, ENABLE_CONTEXT, 1);
 	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT0_CNTL, PAGE_TABLE_DEPTH, 0);
 	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT0_CNTL,
 			    RETRY_PERMISSION_OR_INVALID_PAGE_FAULT, 0);
 	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_CNTL, tmp);
 }

 static void gfxhub_v2_0_disable_identity_aperture(struct amdgpu_device *adev)
 {
 	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT1_IDENTITY_APERTURE_LOW_ADDR_LO32,
 		     0xFFFFFFFF);
 	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT1_IDENTITY_APERTURE_LOW_ADDR_HI32,
 		     0x0000000F);

 	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT1_IDENTITY_APERTURE_HIGH_ADDR_LO32,
 		     0);
 	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT1_IDENTITY_APERTURE_HIGH_ADDR_HI32,
 		     0);

 	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT_IDENTITY_PHYSICAL_OFFSET_LO32, 0);
 	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT_IDENTITY_PHYSICAL_OFFSET_HI32, 0);

 }

 static void gfxhub_v2_0_setup_vmid_config(struct amdgpu_device *adev)
 {
 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];
 	int i;
 	uint32_t tmp;

 	for (i = 0; i <= 14; i++) {
 		tmp = RREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_CNTL, i);
 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL, ENABLE_CONTEXT, 1);
 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL, PAGE_TABLE_DEPTH,
 				    adev->vm_manager.num_level);
 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
 				RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
 				DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
 				PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
 				VALID_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
 				READ_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
 				WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
 				EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
 				PAGE_TABLE_BLOCK_SIZE,
 				adev->vm_manager.block_size - 9);
 		/* Send no-retry XNACK on fault to suppress VM fault storm. */
 		tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
 				    RETRY_PERMISSION_OR_INVALID_PAGE_FAULT,
 				    !adev->gmc.noretry);
 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_CNTL,
 				    i * hub->ctx_distance, tmp);
 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_START_ADDR_LO32,
 				    i * hub->ctx_addr_distance, 0);
 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_START_ADDR_HI32,
 				    i * hub->ctx_addr_distance, 0);
 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_END_ADDR_LO32,
 				    i * hub->ctx_addr_distance,
 				    lower_32_bits(adev->vm_manager.max_pfn - 1));
 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_END_ADDR_HI32,
 				    i * hub->ctx_addr_distance,
 				    upper_32_bits(adev->vm_manager.max_pfn - 1));
 	}

 	hub->vm_cntx_cntl = tmp;
 }

 static void gfxhub_v2_0_program_invalidation(struct amdgpu_device *adev)
 {
 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];
 	unsigned i;

 	for (i = 0 ; i < 18; ++i) {
 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_ADDR_RANGE_LO32,
 				    i * hub->eng_addr_distance, 0xffffffff);
 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_ADDR_RANGE_HI32,
 				    i * hub->eng_addr_distance, 0x1f);
 	}
 }

 static int gfxhub_v2_0_gart_enable(struct amdgpu_device *adev)
 {
 	/* GART Enable. */
 	gfxhub_v2_0_init_gart_aperture_regs(adev);
 	gfxhub_v2_0_init_system_aperture_regs(adev);
 	gfxhub_v2_0_init_tlb_regs(adev);
 	gfxhub_v2_0_init_cache_regs(adev);

 	gfxhub_v2_0_enable_system_domain(adev);
 	gfxhub_v2_0_disable_identity_aperture(adev);
 	gfxhub_v2_0_setup_vmid_config(adev);
 	gfxhub_v2_0_program_invalidation(adev);

 	return 0;
 }

 static void gfxhub_v2_0_gart_disable(struct amdgpu_device *adev)
 {
 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];
 	u32 tmp;
 	u32 i;

 	/* Disable all tables */
 	for (i = 0; i < 16; i++)
 		WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_CNTL,
 				    i * hub->ctx_distance, 0);

 	/* Setup TLB control */
 	tmp = RREG32_SOC15(GC, 0, mmGCMC_VM_MX_L1_TLB_CNTL);
 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 0);
 	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
 			    ENABLE_ADVANCED_DRIVER_MODEL, 0);
 	WREG32_SOC15(GC, 0, mmGCMC_VM_MX_L1_TLB_CNTL, tmp);

 	if (!amdgpu_sriov_vf(adev)) {
 		/* Setup L2 cache */
 		WREG32_FIELD15(GC, 0, GCVM_L2_CNTL, ENABLE_L2_CACHE, 0);
 		WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL3, 0);
 	}
 }

 /**
  * gfxhub_v2_0_set_fault_enable_default - update GART/VM fault handling
  *
  * @adev: amdgpu_device pointer
  * @value: true redirects VM faults to the default page
  */
 static void gfxhub_v2_0_set_fault_enable_default(struct amdgpu_device *adev,
 					  bool value)
 {
 	u32 tmp;
 	tmp = RREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
 			    RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
 			    PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
 			    PDE1_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
 			    PDE2_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
 			    TRANSLATE_FURTHER_PROTECTION_FAULT_ENABLE_DEFAULT,
 			    value);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
 			    NACK_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
 			    DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
 			    VALID_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
 			    READ_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
 			    WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
 			    EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
 	if (!value) {
 		tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
 				CRASH_ON_NO_RETRY_FAULT, 1);
 		tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
 				CRASH_ON_RETRY_FAULT, 1);
 	}
 	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL, tmp);
 }

 static const struct amdgpu_vmhub_funcs gfxhub_v2_0_vmhub_funcs = {
 	.print_l2_protection_fault_status = gfxhub_v2_0_print_l2_protection_fault_status,
 	.get_invalidate_req = gfxhub_v2_0_get_invalidate_req,
 };

 static void gfxhub_v2_0_init(struct amdgpu_device *adev)
 {
 	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];

 	hub->ctx0_ptb_addr_lo32 =
 		SOC15_REG_OFFSET(GC, 0,
 				 mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32);
 	hub->ctx0_ptb_addr_hi32 =
 		SOC15_REG_OFFSET(GC, 0,
 				 mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32);
 	hub->vm_inv_eng0_sem =
 		SOC15_REG_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_SEM);
 	hub->vm_inv_eng0_req =
 		SOC15_REG_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_REQ);
 	hub->vm_inv_eng0_ack =
 		SOC15_REG_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_ACK);
 	hub->vm_context0_cntl =
 		SOC15_REG_OFFSET(GC, 0, mmGCVM_CONTEXT0_CNTL);
 	hub->vm_l2_pro_fault_status =
 		SOC15_REG_OFFSET(GC, 0, mmGCVM_L2_PROTECTION_FAULT_STATUS);
 	hub->vm_l2_pro_fault_cntl =
 		SOC15_REG_OFFSET(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL);

 	hub->ctx_distance = mmGCVM_CONTEXT1_CNTL - mmGCVM_CONTEXT0_CNTL;
 	hub->ctx_addr_distance = mmGCVM_CONTEXT1_PAGE_TABLE_BASE_ADDR_LO32 -
 		mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32;
 	hub->eng_distance = mmGCVM_INVALIDATE_ENG1_REQ -
 		mmGCVM_INVALIDATE_ENG0_REQ;
 	hub->eng_addr_distance = mmGCVM_INVALIDATE_ENG1_ADDR_RANGE_LO32 -
 		mmGCVM_INVALIDATE_ENG0_ADDR_RANGE_LO32;

 	hub->vm_cntx_cntl_vm_fault = GCVM_CONTEXT1_CNTL__RANGE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
 		GCVM_CONTEXT1_CNTL__DUMMY_PAGE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
 		GCVM_CONTEXT1_CNTL__PDE0_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
 		GCVM_CONTEXT1_CNTL__VALID_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
 		GCVM_CONTEXT1_CNTL__READ_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
 		GCVM_CONTEXT1_CNTL__WRITE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
 		GCVM_CONTEXT1_CNTL__EXECUTE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK;

 	hub->vmhub_funcs = &gfxhub_v2_0_vmhub_funcs;
 }

 const struct amdgpu_gfxhub_funcs gfxhub_v2_0_funcs = {
 	.get_fb_location = gfxhub_v2_0_get_fb_location,
 	.get_mc_fb_offset = gfxhub_v2_0_get_mc_fb_offset,
 	.setup_vm_pt_regs = gfxhub_v2_0_setup_vm_pt_regs,
 	.gart_enable = gfxhub_v2_0_gart_enable,
 	.gart_disable = gfxhub_v2_0_gart_disable,
 	.set_fault_enable_default = gfxhub_v2_0_set_fault_enable_default,
 	.init = gfxhub_v2_0_init,
 };
	/*
	* Copyright 2019 Advanced Micro Devices, Inc.
	*
	* Permission is hereby granted, free of charge, to any person obtaining a
	* copy of this software and associated documentation files (the "Software"),
	* to deal in the Software without restriction, including without limitation
	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	* and/or sell copies of the Software, and to permit persons to whom the
	* Software is furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	* OTHER DEALINGS IN THE SOFTWARE.
	*
	*/

	#include "amdgpu.h"
	#include "gfxhub_v2_0.h"

	#include "gc/gc_10_1_0_offset.h"
	#include "gc/gc_10_1_0_sh_mask.h"
	#include "gc/gc_10_1_0_default.h"
	#include "navi10_enum.h"

	#include "soc15_common.h"

	static const char *gfxhub_client_ids[] = {
	"CB/DB",
	"Reserved",
	"GE1",
	"GE2",
	"CPF",
	"CPC",
	"CPG",
	"RLC",
	"TCP",
	"SQC (inst)",
	"SQC (data)",
	"SQG",
	"Reserved",
	"SDMA0",
	"SDMA1",
	"GCR",
	"SDMA2",
	"SDMA3",
	};

	static uint32_t gfxhub_v2_0_get_invalidate_req(unsigned int vmid,
	uint32_t flush_type)
	{
	u32 req = 0;

	/* invalidate using legacy mode on vmid*/
	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ,
	PER_VMID_INVALIDATE_REQ, 1 << vmid);
	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, FLUSH_TYPE, flush_type);
	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PTES, 1);
	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE0, 1);
	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE1, 1);
	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L2_PDE2, 1);
	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ, INVALIDATE_L1_PTES, 1);
	req = REG_SET_FIELD(req, GCVM_INVALIDATE_ENG0_REQ,
	CLEAR_PROTECTION_FAULT_STATUS_ADDR, 0);

	return req;
	}

	static void
	gfxhub_v2_0_print_l2_protection_fault_status(struct amdgpu_device *adev,
	uint32_t status)
	{
	u32 cid = REG_GET_FIELD(status,
	GCVM_L2_PROTECTION_FAULT_STATUS, CID);

	dev_err(adev->dev,
	"GCVM_L2_PROTECTION_FAULT_STATUS:0x%08X\n",
	status);
	dev_err(adev->dev, "\t Faulty UTCL2 client ID: %s (0x%x)\n",
	cid >= ARRAY_SIZE(gfxhub_client_ids) ? "unknown" : gfxhub_client_ids[cid],
	cid);
	dev_err(adev->dev, "\t MORE_FAULTS: 0x%lx\n",
	REG_GET_FIELD(status,
	GCVM_L2_PROTECTION_FAULT_STATUS, MORE_FAULTS));
	dev_err(adev->dev, "\t WALKER_ERROR: 0x%lx\n",
	REG_GET_FIELD(status,
	GCVM_L2_PROTECTION_FAULT_STATUS, WALKER_ERROR));
	dev_err(adev->dev, "\t PERMISSION_FAULTS: 0x%lx\n",
	REG_GET_FIELD(status,
	GCVM_L2_PROTECTION_FAULT_STATUS, PERMISSION_FAULTS));
	dev_err(adev->dev, "\t MAPPING_ERROR: 0x%lx\n",
	REG_GET_FIELD(status,
	GCVM_L2_PROTECTION_FAULT_STATUS, MAPPING_ERROR));
	dev_err(adev->dev, "\t RW: 0x%lx\n",
	REG_GET_FIELD(status,
	GCVM_L2_PROTECTION_FAULT_STATUS, RW));
	}

	static u64 gfxhub_v2_0_get_fb_location(struct amdgpu_device *adev)
	{
	u64 base = RREG32_SOC15(GC, 0, mmGCMC_VM_FB_LOCATION_BASE);

	base &= GCMC_VM_FB_LOCATION_BASE__FB_BASE_MASK;
	base <<= 24;

	return base;
	}

	static u64 gfxhub_v2_0_get_mc_fb_offset(struct amdgpu_device *adev)
	{
	return (u64)RREG32_SOC15(GC, 0, mmGCMC_VM_FB_OFFSET) << 24;
	}

	static void gfxhub_v2_0_setup_vm_pt_regs(struct amdgpu_device *adev, uint32_t vmid,
	uint64_t page_table_base)
	{
	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];

	WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32,
	hub->ctx_addr_distance * vmid,
	lower_32_bits(page_table_base));

	WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32,
	hub->ctx_addr_distance * vmid,
	upper_32_bits(page_table_base));
	}

	static void gfxhub_v2_0_init_gart_aperture_regs(struct amdgpu_device *adev)
	{
	uint64_t pt_base = amdgpu_gmc_pd_addr(adev->gart.bo);

	gfxhub_v2_0_setup_vm_pt_regs(adev, 0, pt_base);

	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_START_ADDR_LO32,
	(u32)(adev->gmc.gart_start >> 12));
	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_START_ADDR_HI32,
	(u32)(adev->gmc.gart_start >> 44));

	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_END_ADDR_LO32,
	(u32)(adev->gmc.gart_end >> 12));
	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_PAGE_TABLE_END_ADDR_HI32,
	(u32)(adev->gmc.gart_end >> 44));
	}

	static void gfxhub_v2_0_init_system_aperture_regs(struct amdgpu_device *adev)
	{
	uint64_t value;

	if (!amdgpu_sriov_vf(adev)) {
	/* Program the AGP BAR */
	WREG32_SOC15(GC, 0, mmGCMC_VM_AGP_BASE, 0);
	WREG32_SOC15(GC, 0, mmGCMC_VM_AGP_BOT, adev->gmc.agp_start >> 24);
	WREG32_SOC15(GC, 0, mmGCMC_VM_AGP_TOP, adev->gmc.agp_end >> 24);

	/* Program the system aperture low logical page number. */
	WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_LOW_ADDR,
	min(adev->gmc.fb_start, adev->gmc.agp_start) >> 18);
	WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_HIGH_ADDR,
	max(adev->gmc.fb_end, adev->gmc.agp_end) >> 18);

	/* Set default page address. */
	value = amdgpu_gmc_vram_mc2pa(adev, adev->mem_scratch.gpu_addr);
	WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_LSB,
	(u32)(value >> 12));
	WREG32_SOC15(GC, 0, mmGCMC_VM_SYSTEM_APERTURE_DEFAULT_ADDR_MSB,
	(u32)(value >> 44));
	}

	/* Program "protection fault". */
	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_LO32,
	(u32)(adev->dummy_page_addr >> 12));
	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_DEFAULT_ADDR_HI32,
	(u32)((u64)adev->dummy_page_addr >> 44));

	WREG32_FIELD15(GC, 0, GCVM_L2_PROTECTION_FAULT_CNTL2,
	ACTIVE_PAGE_MIGRATION_PTE_READ_RETRY, 1);
	}


	static void gfxhub_v2_0_init_tlb_regs(struct amdgpu_device *adev)
	{
	uint32_t tmp;

	/* Setup TLB control */
	tmp = RREG32_SOC15(GC, 0, mmGCMC_VM_MX_L1_TLB_CNTL);

	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 1);
	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL, SYSTEM_ACCESS_MODE, 3);
	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
	ENABLE_ADVANCED_DRIVER_MODEL, 1);
	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
	SYSTEM_APERTURE_UNMAPPED_ACCESS, 0);
	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
	MTYPE, MTYPE_UC); /* UC, uncached */

	WREG32_SOC15(GC, 0, mmGCMC_VM_MX_L1_TLB_CNTL, tmp);
	}

	static void gfxhub_v2_0_init_cache_regs(struct amdgpu_device *adev)
	{
	uint32_t tmp;

	/* These regs are not accessible for VF, PF will program these in SRIOV */
	if (amdgpu_sriov_vf(adev))
	return;

	/* Setup L2 cache */
	tmp = RREG32_SOC15(GC, 0, mmGCVM_L2_CNTL);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, ENABLE_L2_CACHE, 1);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, ENABLE_L2_FRAGMENT_PROCESSING, 0);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL,
	ENABLE_DEFAULT_PAGE_OUT_TO_SYSTEM_MEMORY, 1);
	/* XXX for emulation, Refer to closed source code.*/
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL,
	L2_PDE0_CACHE_TAG_GENERATION_MODE, 0);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, PDE_FAULT_CLASSIFICATION, 0);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, CONTEXT1_IDENTITY_ACCESS_MODE, 1);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL, IDENTITY_MODE_FRAGMENT_SIZE, 0);
	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL, tmp);

	tmp = RREG32_SOC15(GC, 0, mmGCVM_L2_CNTL2);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL2, INVALIDATE_ALL_L1_TLBS, 1);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL2, INVALIDATE_L2_CACHE, 1);
	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL2, tmp);

	tmp = mmGCVM_L2_CNTL3_DEFAULT;
	if (adev->gmc.translate_further) {
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3, BANK_SELECT, 12);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3,
	L2_CACHE_BIGK_FRAGMENT_SIZE, 9);
	} else {
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3, BANK_SELECT, 9);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL3,
	L2_CACHE_BIGK_FRAGMENT_SIZE, 6);
	}
	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL3, tmp);

	tmp = mmGCVM_L2_CNTL4_DEFAULT;
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL4, VMC_TAP_PDE_REQUEST_PHYSICAL, 0);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL4, VMC_TAP_PTE_REQUEST_PHYSICAL, 0);
	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL4, tmp);

	tmp = mmGCVM_L2_CNTL5_DEFAULT;
	tmp = REG_SET_FIELD(tmp, GCVM_L2_CNTL5, L2_CACHE_SMALLK_FRAGMENT_SIZE, 0);
	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL5, tmp);
	}

	static void gfxhub_v2_0_enable_system_domain(struct amdgpu_device *adev)
	{
	uint32_t tmp;

	tmp = RREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_CNTL);
	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT0_CNTL, ENABLE_CONTEXT, 1);
	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT0_CNTL, PAGE_TABLE_DEPTH, 0);
	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT0_CNTL,
	RETRY_PERMISSION_OR_INVALID_PAGE_FAULT, 0);
	WREG32_SOC15(GC, 0, mmGCVM_CONTEXT0_CNTL, tmp);
	}

	static void gfxhub_v2_0_disable_identity_aperture(struct amdgpu_device *adev)
	{
	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT1_IDENTITY_APERTURE_LOW_ADDR_LO32,
	0xFFFFFFFF);
	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT1_IDENTITY_APERTURE_LOW_ADDR_HI32,
	0x0000000F);

	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT1_IDENTITY_APERTURE_HIGH_ADDR_LO32,
	0);
	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT1_IDENTITY_APERTURE_HIGH_ADDR_HI32,
	0);

	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT_IDENTITY_PHYSICAL_OFFSET_LO32, 0);
	WREG32_SOC15(GC, 0, mmGCVM_L2_CONTEXT_IDENTITY_PHYSICAL_OFFSET_HI32, 0);

	}

	static void gfxhub_v2_0_setup_vmid_config(struct amdgpu_device *adev)
	{
	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];
	int i;
	uint32_t tmp;

	for (i = 0; i <= 14; i++) {
	tmp = RREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_CNTL, i);
	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL, ENABLE_CONTEXT, 1);
	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL, PAGE_TABLE_DEPTH,
	adev->vm_manager.num_level);
	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
	RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
	DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
	PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
	VALID_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
	READ_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
	WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
	EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, 1);
	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
	PAGE_TABLE_BLOCK_SIZE,
	adev->vm_manager.block_size - 9);
	/* Send no-retry XNACK on fault to suppress VM fault storm. */
	tmp = REG_SET_FIELD(tmp, GCVM_CONTEXT1_CNTL,
	RETRY_PERMISSION_OR_INVALID_PAGE_FAULT,
	!adev->gmc.noretry);
	WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_CNTL,
	i * hub->ctx_distance, tmp);
	WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_START_ADDR_LO32,
	i * hub->ctx_addr_distance, 0);
	WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_START_ADDR_HI32,
	i * hub->ctx_addr_distance, 0);
	WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_END_ADDR_LO32,
	i * hub->ctx_addr_distance,
	lower_32_bits(adev->vm_manager.max_pfn - 1));
	WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT1_PAGE_TABLE_END_ADDR_HI32,
	i * hub->ctx_addr_distance,
	upper_32_bits(adev->vm_manager.max_pfn - 1));
	}

	hub->vm_cntx_cntl = tmp;
	}

	static void gfxhub_v2_0_program_invalidation(struct amdgpu_device *adev)
	{
	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];
	unsigned i;

	for (i = 0 ; i < 18; ++i) {
	WREG32_SOC15_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_ADDR_RANGE_LO32,
	i * hub->eng_addr_distance, 0xffffffff);
	WREG32_SOC15_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_ADDR_RANGE_HI32,
	i * hub->eng_addr_distance, 0x1f);
	}
	}

	static int gfxhub_v2_0_gart_enable(struct amdgpu_device *adev)
	{
	/* GART Enable. */
	gfxhub_v2_0_init_gart_aperture_regs(adev);
	gfxhub_v2_0_init_system_aperture_regs(adev);
	gfxhub_v2_0_init_tlb_regs(adev);
	gfxhub_v2_0_init_cache_regs(adev);

	gfxhub_v2_0_enable_system_domain(adev);
	gfxhub_v2_0_disable_identity_aperture(adev);
	gfxhub_v2_0_setup_vmid_config(adev);
	gfxhub_v2_0_program_invalidation(adev);

	return 0;
	}

	static void gfxhub_v2_0_gart_disable(struct amdgpu_device *adev)
	{
	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];
	u32 tmp;
	u32 i;

	/* Disable all tables */
	for (i = 0; i < 16; i++)
	WREG32_SOC15_OFFSET(GC, 0, mmGCVM_CONTEXT0_CNTL,
	i * hub->ctx_distance, 0);

	/* Setup TLB control */
	tmp = RREG32_SOC15(GC, 0, mmGCMC_VM_MX_L1_TLB_CNTL);
	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL, ENABLE_L1_TLB, 0);
	tmp = REG_SET_FIELD(tmp, GCMC_VM_MX_L1_TLB_CNTL,
	ENABLE_ADVANCED_DRIVER_MODEL, 0);
	WREG32_SOC15(GC, 0, mmGCMC_VM_MX_L1_TLB_CNTL, tmp);

	if (!amdgpu_sriov_vf(adev)) {
	/* Setup L2 cache */
	WREG32_FIELD15(GC, 0, GCVM_L2_CNTL, ENABLE_L2_CACHE, 0);
	WREG32_SOC15(GC, 0, mmGCVM_L2_CNTL3, 0);
	}
	}

	/**
	* gfxhub_v2_0_set_fault_enable_default - update GART/VM fault handling
	*
	* @adev: amdgpu_device pointer
	* @value: true redirects VM faults to the default page
	*/
	static void gfxhub_v2_0_set_fault_enable_default(struct amdgpu_device *adev,
	bool value)
	{
	u32 tmp;
	tmp = RREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
	RANGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
	PDE0_PROTECTION_FAULT_ENABLE_DEFAULT, value);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
	PDE1_PROTECTION_FAULT_ENABLE_DEFAULT, value);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
	PDE2_PROTECTION_FAULT_ENABLE_DEFAULT, value);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
	TRANSLATE_FURTHER_PROTECTION_FAULT_ENABLE_DEFAULT,
	value);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
	NACK_PROTECTION_FAULT_ENABLE_DEFAULT, value);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
	DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
	VALID_PROTECTION_FAULT_ENABLE_DEFAULT, value);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
	READ_PROTECTION_FAULT_ENABLE_DEFAULT, value);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
	WRITE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
	EXECUTE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
	if (!value) {
	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
	CRASH_ON_NO_RETRY_FAULT, 1);
	tmp = REG_SET_FIELD(tmp, GCVM_L2_PROTECTION_FAULT_CNTL,
	CRASH_ON_RETRY_FAULT, 1);
	}
	WREG32_SOC15(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL, tmp);
	}

	static const struct amdgpu_vmhub_funcs gfxhub_v2_0_vmhub_funcs = {
	.print_l2_protection_fault_status = gfxhub_v2_0_print_l2_protection_fault_status,
	.get_invalidate_req = gfxhub_v2_0_get_invalidate_req,
	};

	static void gfxhub_v2_0_init(struct amdgpu_device *adev)
	{
	struct amdgpu_vmhub *hub = &adev->vmhub[AMDGPU_GFXHUB_0];

	hub->ctx0_ptb_addr_lo32 =
	SOC15_REG_OFFSET(GC, 0,
	mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32);
	hub->ctx0_ptb_addr_hi32 =
	SOC15_REG_OFFSET(GC, 0,
	mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32);
	hub->vm_inv_eng0_sem =
	SOC15_REG_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_SEM);
	hub->vm_inv_eng0_req =
	SOC15_REG_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_REQ);
	hub->vm_inv_eng0_ack =
	SOC15_REG_OFFSET(GC, 0, mmGCVM_INVALIDATE_ENG0_ACK);
	hub->vm_context0_cntl =
	SOC15_REG_OFFSET(GC, 0, mmGCVM_CONTEXT0_CNTL);
	hub->vm_l2_pro_fault_status =
	SOC15_REG_OFFSET(GC, 0, mmGCVM_L2_PROTECTION_FAULT_STATUS);
	hub->vm_l2_pro_fault_cntl =
	SOC15_REG_OFFSET(GC, 0, mmGCVM_L2_PROTECTION_FAULT_CNTL);

	hub->ctx_distance = mmGCVM_CONTEXT1_CNTL - mmGCVM_CONTEXT0_CNTL;
	hub->ctx_addr_distance = mmGCVM_CONTEXT1_PAGE_TABLE_BASE_ADDR_LO32 -
	mmGCVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_LO32;
	hub->eng_distance = mmGCVM_INVALIDATE_ENG1_REQ -
	mmGCVM_INVALIDATE_ENG0_REQ;
	hub->eng_addr_distance = mmGCVM_INVALIDATE_ENG1_ADDR_RANGE_LO32 -
	mmGCVM_INVALIDATE_ENG0_ADDR_RANGE_LO32;

	hub->vm_cntx_cntl_vm_fault = GCVM_CONTEXT1_CNTL__RANGE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK \|
	GCVM_CONTEXT1_CNTL__DUMMY_PAGE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK \|
	GCVM_CONTEXT1_CNTL__PDE0_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK \|
	GCVM_CONTEXT1_CNTL__VALID_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK \|
	GCVM_CONTEXT1_CNTL__READ_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK \|
	GCVM_CONTEXT1_CNTL__WRITE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK \|
	GCVM_CONTEXT1_CNTL__EXECUTE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK;

	hub->vmhub_funcs = &gfxhub_v2_0_vmhub_funcs;
	}

	const struct amdgpu_gfxhub_funcs gfxhub_v2_0_funcs = {
	.get_fb_location = gfxhub_v2_0_get_fb_location,
	.get_mc_fb_offset = gfxhub_v2_0_get_mc_fb_offset,
	.setup_vm_pt_regs = gfxhub_v2_0_setup_vm_pt_regs,
	.gart_enable = gfxhub_v2_0_gart_enable,
	.gart_disable = gfxhub_v2_0_gart_disable,
	.set_fault_enable_default = gfxhub_v2_0_set_fault_enable_default,
	.init = gfxhub_v2_0_init,
	};