drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c - linux - Git at Google

 /*
  * Copyright 2016 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 "amdgpu_atombios.h"
 #include "nbio_v7_0.h"

 #include "nbio/nbio_7_0_default.h"
 #include "nbio/nbio_7_0_offset.h"
 #include "nbio/nbio_7_0_sh_mask.h"
 #include "nbio/nbio_7_0_smn.h"
 #include "vega10_enum.h"
 #include <uapi/linux/kfd_ioctl.h>

 #define smnNBIF_MGCG_CTRL_LCLK	0x1013a05c

 static void nbio_v7_0_remap_hdp_registers(struct amdgpu_device *adev)
 {
 	WREG32_SOC15(NBIO, 0, mmREMAP_HDP_MEM_FLUSH_CNTL,
 		adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL);
 	WREG32_SOC15(NBIO, 0, mmREMAP_HDP_REG_FLUSH_CNTL,
 		adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_REG_FLUSH_CNTL);
 }

 static u32 nbio_v7_0_get_rev_id(struct amdgpu_device *adev)
 {
 	u32 tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0);

 	tmp &= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0_MASK;
 	tmp >>= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0__SHIFT;

 	return tmp;
 }

 static void nbio_v7_0_mc_access_enable(struct amdgpu_device *adev, bool enable)
 {
 	if (enable)
 		WREG32_SOC15(NBIO, 0, mmBIF_FB_EN,
 			BIF_FB_EN__FB_READ_EN_MASK | BIF_FB_EN__FB_WRITE_EN_MASK);
 	else
 		WREG32_SOC15(NBIO, 0, mmBIF_FB_EN, 0);
 }

 static u32 nbio_v7_0_get_memsize(struct amdgpu_device *adev)
 {
 	return RREG32_SOC15(NBIO, 0, mmRCC_CONFIG_MEMSIZE);
 }

 static void nbio_v7_0_sdma_doorbell_range(struct amdgpu_device *adev, int instance,
 			bool use_doorbell, int doorbell_index, int doorbell_size)
 {
 	u32 reg = instance == 0 ? SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA0_DOORBELL_RANGE) :
 			SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA1_DOORBELL_RANGE);

 	u32 doorbell_range = RREG32(reg);

 	if (use_doorbell) {
 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, OFFSET, doorbell_index);
 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, doorbell_size);
 	} else
 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 0);

 	WREG32(reg, doorbell_range);
 }

 static void nbio_v7_0_vcn_doorbell_range(struct amdgpu_device *adev, bool use_doorbell,
 					 int doorbell_index, int instance)
 {
 	u32 reg = SOC15_REG_OFFSET(NBIO, 0, mmBIF_MMSCH0_DOORBELL_RANGE);

 	u32 doorbell_range = RREG32(reg);

 	if (use_doorbell) {
 		doorbell_range = REG_SET_FIELD(doorbell_range,
 					       BIF_MMSCH0_DOORBELL_RANGE, OFFSET,
 					       doorbell_index);
 		doorbell_range = REG_SET_FIELD(doorbell_range,
 					       BIF_MMSCH0_DOORBELL_RANGE, SIZE, 8);
 	} else
 		doorbell_range = REG_SET_FIELD(doorbell_range,
 					       BIF_MMSCH0_DOORBELL_RANGE, SIZE, 0);

 	WREG32(reg, doorbell_range);
 }

 static void nbio_v7_0_enable_doorbell_aperture(struct amdgpu_device *adev,
 					       bool enable)
 {
 	WREG32_FIELD15(NBIO, 0, RCC_DOORBELL_APER_EN, BIF_DOORBELL_APER_EN, enable ? 1 : 0);
 }

 static void nbio_v7_0_enable_doorbell_selfring_aperture(struct amdgpu_device *adev,
 							bool enable)
 {

 }

 static void nbio_v7_0_ih_doorbell_range(struct amdgpu_device *adev,
 					bool use_doorbell, int doorbell_index)
 {
 	u32 ih_doorbell_range = RREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE);

 	if (use_doorbell) {
 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, OFFSET, doorbell_index);
 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 2);
 	} else
 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 0);

 	WREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE, ih_doorbell_range);
 }

 static uint32_t nbio_7_0_read_syshub_ind_mmr(struct amdgpu_device *adev, uint32_t offset)
 {
 	uint32_t data;

 	WREG32_SOC15(NBIO, 0, mmSYSHUB_INDEX, offset);
 	data = RREG32_SOC15(NBIO, 0, mmSYSHUB_DATA);

 	return data;
 }

 static void nbio_7_0_write_syshub_ind_mmr(struct amdgpu_device *adev, uint32_t offset,
 				       uint32_t data)
 {
 	WREG32_SOC15(NBIO, 0, mmSYSHUB_INDEX, offset);
 	WREG32_SOC15(NBIO, 0, mmSYSHUB_DATA, data);
 }

 static void nbio_v7_0_update_medium_grain_clock_gating(struct amdgpu_device *adev,
 						       bool enable)
 {
 	uint32_t def, data;

 	/* NBIF_MGCG_CTRL_LCLK */
 	def = data = RREG32_PCIE(smnNBIF_MGCG_CTRL_LCLK);

 	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG))
 		data |= NBIF_MGCG_CTRL_LCLK__NBIF_MGCG_EN_LCLK_MASK;
 	else
 		data &= ~NBIF_MGCG_CTRL_LCLK__NBIF_MGCG_EN_LCLK_MASK;

 	if (def != data)
 		WREG32_PCIE(smnNBIF_MGCG_CTRL_LCLK, data);

 	/* SYSHUB_MGCG_CTRL_SOCCLK */
 	def = data = nbio_7_0_read_syshub_ind_mmr(adev, ixSYSHUB_MMREG_IND_SYSHUB_MGCG_CTRL_SOCCLK);

 	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG))
 		data |= SYSHUB_MMREG_DIRECT_SYSHUB_MGCG_CTRL_SOCCLK__SYSHUB_MGCG_EN_SOCCLK_MASK;
 	else
 		data &= ~SYSHUB_MMREG_DIRECT_SYSHUB_MGCG_CTRL_SOCCLK__SYSHUB_MGCG_EN_SOCCLK_MASK;

 	if (def != data)
 		nbio_7_0_write_syshub_ind_mmr(adev, ixSYSHUB_MMREG_IND_SYSHUB_MGCG_CTRL_SOCCLK, data);

 	/* SYSHUB_MGCG_CTRL_SHUBCLK */
 	def = data = nbio_7_0_read_syshub_ind_mmr(adev, ixSYSHUB_MMREG_IND_SYSHUB_MGCG_CTRL_SHUBCLK);

 	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG))
 		data |= SYSHUB_MMREG_DIRECT_SYSHUB_MGCG_CTRL_SHUBCLK__SYSHUB_MGCG_EN_SHUBCLK_MASK;
 	else
 		data &= ~SYSHUB_MMREG_DIRECT_SYSHUB_MGCG_CTRL_SHUBCLK__SYSHUB_MGCG_EN_SHUBCLK_MASK;

 	if (def != data)
 		nbio_7_0_write_syshub_ind_mmr(adev, ixSYSHUB_MMREG_IND_SYSHUB_MGCG_CTRL_SHUBCLK, data);
 }

 static void nbio_v7_0_update_medium_grain_light_sleep(struct amdgpu_device *adev,
 						      bool enable)
 {
 	uint32_t def, data;

 	def = data = RREG32_PCIE(smnPCIE_CNTL2);
 	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_LS)) {
 		data |= (PCIE_CNTL2__SLV_MEM_LS_EN_MASK |
 			 PCIE_CNTL2__MST_MEM_LS_EN_MASK |
 			 PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK);
 	} else {
 		data &= ~(PCIE_CNTL2__SLV_MEM_LS_EN_MASK |
 			  PCIE_CNTL2__MST_MEM_LS_EN_MASK |
 			  PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK);
 	}

 	if (def != data)
 		WREG32_PCIE(smnPCIE_CNTL2, data);
 }

 static void nbio_v7_0_get_clockgating_state(struct amdgpu_device *adev,
 					    u64 *flags)
 {
 	int data;

 	/* AMD_CG_SUPPORT_BIF_MGCG */
 	data = RREG32_PCIE(smnCPM_CONTROL);
 	if (data & CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK)
 		*flags |= AMD_CG_SUPPORT_BIF_MGCG;

 	/* AMD_CG_SUPPORT_BIF_LS */
 	data = RREG32_PCIE(smnPCIE_CNTL2);
 	if (data & PCIE_CNTL2__SLV_MEM_LS_EN_MASK)
 		*flags |= AMD_CG_SUPPORT_BIF_LS;
 }

 static void nbio_v7_0_ih_control(struct amdgpu_device *adev)
 {
 	u32 interrupt_cntl;

 	/* setup interrupt control */
 	WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL2, adev->dummy_page_addr >> 8);
 	interrupt_cntl = RREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL);
 	/* INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=0 - dummy read disabled with msi, enabled without msi
 	 * INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=1 - dummy read controlled by IH_DUMMY_RD_EN
 	 */
 	interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_DUMMY_RD_OVERRIDE, 0);
 	/* INTERRUPT_CNTL__IH_REQ_NONSNOOP_EN_MASK=1 if ring is in non-cacheable memory, e.g., vram */
 	interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_REQ_NONSNOOP_EN, 0);
 	WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL, interrupt_cntl);
 }

 static u32 nbio_v7_0_get_hdp_flush_req_offset(struct amdgpu_device *adev)
 {
 	return SOC15_REG_OFFSET(NBIO, 0, mmGPU_HDP_FLUSH_REQ);
 }

 static u32 nbio_v7_0_get_hdp_flush_done_offset(struct amdgpu_device *adev)
 {
 	return SOC15_REG_OFFSET(NBIO, 0, mmGPU_HDP_FLUSH_DONE);
 }

 static u32 nbio_v7_0_get_pcie_index_offset(struct amdgpu_device *adev)
 {
 	return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_INDEX2);
 }

 static u32 nbio_v7_0_get_pcie_data_offset(struct amdgpu_device *adev)
 {
 	return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_DATA2);
 }

 const struct nbio_hdp_flush_reg nbio_v7_0_hdp_flush_reg = {
 	.ref_and_mask_cp0 = GPU_HDP_FLUSH_DONE__CP0_MASK,
 	.ref_and_mask_cp1 = GPU_HDP_FLUSH_DONE__CP1_MASK,
 	.ref_and_mask_cp2 = GPU_HDP_FLUSH_DONE__CP2_MASK,
 	.ref_and_mask_cp3 = GPU_HDP_FLUSH_DONE__CP3_MASK,
 	.ref_and_mask_cp4 = GPU_HDP_FLUSH_DONE__CP4_MASK,
 	.ref_and_mask_cp5 = GPU_HDP_FLUSH_DONE__CP5_MASK,
 	.ref_and_mask_cp6 = GPU_HDP_FLUSH_DONE__CP6_MASK,
 	.ref_and_mask_cp7 = GPU_HDP_FLUSH_DONE__CP7_MASK,
 	.ref_and_mask_cp8 = GPU_HDP_FLUSH_DONE__CP8_MASK,
 	.ref_and_mask_cp9 = GPU_HDP_FLUSH_DONE__CP9_MASK,
 	.ref_and_mask_sdma0 = GPU_HDP_FLUSH_DONE__SDMA0_MASK,
 	.ref_and_mask_sdma1 = GPU_HDP_FLUSH_DONE__SDMA1_MASK,
 };

 static void nbio_v7_0_init_registers(struct amdgpu_device *adev)
 {
 }

 #define MMIO_REG_HOLE_OFFSET (0x80000 - PAGE_SIZE)

 static void nbio_v7_0_set_reg_remap(struct amdgpu_device *adev)
 {
 	if (!amdgpu_sriov_vf(adev) && (PAGE_SIZE <= 4096)) {
 		adev->rmmio_remap.reg_offset = MMIO_REG_HOLE_OFFSET;
 		adev->rmmio_remap.bus_addr = adev->rmmio_base + MMIO_REG_HOLE_OFFSET;
 	} else {
 		adev->rmmio_remap.reg_offset =
 			SOC15_REG_OFFSET(NBIO, 0, mmHDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
 		adev->rmmio_remap.bus_addr = 0;
 	}
 }

 const struct amdgpu_nbio_funcs nbio_v7_0_funcs = {
 	.get_hdp_flush_req_offset = nbio_v7_0_get_hdp_flush_req_offset,
 	.get_hdp_flush_done_offset = nbio_v7_0_get_hdp_flush_done_offset,
 	.get_pcie_index_offset = nbio_v7_0_get_pcie_index_offset,
 	.get_pcie_data_offset = nbio_v7_0_get_pcie_data_offset,
 	.get_rev_id = nbio_v7_0_get_rev_id,
 	.mc_access_enable = nbio_v7_0_mc_access_enable,
 	.get_memsize = nbio_v7_0_get_memsize,
 	.sdma_doorbell_range = nbio_v7_0_sdma_doorbell_range,
 	.vcn_doorbell_range = nbio_v7_0_vcn_doorbell_range,
 	.enable_doorbell_aperture = nbio_v7_0_enable_doorbell_aperture,
 	.enable_doorbell_selfring_aperture = nbio_v7_0_enable_doorbell_selfring_aperture,
 	.ih_doorbell_range = nbio_v7_0_ih_doorbell_range,
 	.update_medium_grain_clock_gating = nbio_v7_0_update_medium_grain_clock_gating,
 	.update_medium_grain_light_sleep = nbio_v7_0_update_medium_grain_light_sleep,
 	.get_clockgating_state = nbio_v7_0_get_clockgating_state,
 	.ih_control = nbio_v7_0_ih_control,
 	.init_registers = nbio_v7_0_init_registers,
 	.remap_hdp_registers = nbio_v7_0_remap_hdp_registers,
 	.set_reg_remap = nbio_v7_0_set_reg_remap,
 };
	/*
	* Copyright 2016 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 "amdgpu_atombios.h"
	#include "nbio_v7_0.h"

	#include "nbio/nbio_7_0_default.h"
	#include "nbio/nbio_7_0_offset.h"
	#include "nbio/nbio_7_0_sh_mask.h"
	#include "nbio/nbio_7_0_smn.h"
	#include "vega10_enum.h"
	#include <uapi/linux/kfd_ioctl.h>

	#define smnNBIF_MGCG_CTRL_LCLK 0x1013a05c

	static void nbio_v7_0_remap_hdp_registers(struct amdgpu_device *adev)
	{
	WREG32_SOC15(NBIO, 0, mmREMAP_HDP_MEM_FLUSH_CNTL,
	adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL);
	WREG32_SOC15(NBIO, 0, mmREMAP_HDP_REG_FLUSH_CNTL,
	adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_REG_FLUSH_CNTL);
	}

	static u32 nbio_v7_0_get_rev_id(struct amdgpu_device *adev)
	{
	u32 tmp = RREG32_SOC15(NBIO, 0, mmRCC_DEV0_EPF0_STRAP0);

	tmp &= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0_MASK;
	tmp >>= RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0__SHIFT;

	return tmp;
	}

	static void nbio_v7_0_mc_access_enable(struct amdgpu_device *adev, bool enable)
	{
	if (enable)
	WREG32_SOC15(NBIO, 0, mmBIF_FB_EN,
	BIF_FB_EN__FB_READ_EN_MASK \| BIF_FB_EN__FB_WRITE_EN_MASK);
	else
	WREG32_SOC15(NBIO, 0, mmBIF_FB_EN, 0);
	}

	static u32 nbio_v7_0_get_memsize(struct amdgpu_device *adev)
	{
	return RREG32_SOC15(NBIO, 0, mmRCC_CONFIG_MEMSIZE);
	}

	static void nbio_v7_0_sdma_doorbell_range(struct amdgpu_device *adev, int instance,
	bool use_doorbell, int doorbell_index, int doorbell_size)
	{
	u32 reg = instance == 0 ? SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA0_DOORBELL_RANGE) :
	SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA1_DOORBELL_RANGE);

	u32 doorbell_range = RREG32(reg);

	if (use_doorbell) {
	doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, OFFSET, doorbell_index);
	doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, doorbell_size);
	} else
	doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 0);

	WREG32(reg, doorbell_range);
	}

	static void nbio_v7_0_vcn_doorbell_range(struct amdgpu_device *adev, bool use_doorbell,
	int doorbell_index, int instance)
	{
	u32 reg = SOC15_REG_OFFSET(NBIO, 0, mmBIF_MMSCH0_DOORBELL_RANGE);

	u32 doorbell_range = RREG32(reg);

	if (use_doorbell) {
	doorbell_range = REG_SET_FIELD(doorbell_range,
	BIF_MMSCH0_DOORBELL_RANGE, OFFSET,
	doorbell_index);
	doorbell_range = REG_SET_FIELD(doorbell_range,
	BIF_MMSCH0_DOORBELL_RANGE, SIZE, 8);
	} else
	doorbell_range = REG_SET_FIELD(doorbell_range,
	BIF_MMSCH0_DOORBELL_RANGE, SIZE, 0);

	WREG32(reg, doorbell_range);
	}

	static void nbio_v7_0_enable_doorbell_aperture(struct amdgpu_device *adev,
	bool enable)
	{
	WREG32_FIELD15(NBIO, 0, RCC_DOORBELL_APER_EN, BIF_DOORBELL_APER_EN, enable ? 1 : 0);
	}

	static void nbio_v7_0_enable_doorbell_selfring_aperture(struct amdgpu_device *adev,
	bool enable)
	{

	}

	static void nbio_v7_0_ih_doorbell_range(struct amdgpu_device *adev,
	bool use_doorbell, int doorbell_index)
	{
	u32 ih_doorbell_range = RREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE);

	if (use_doorbell) {
	ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, OFFSET, doorbell_index);
	ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 2);
	} else
	ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range, BIF_IH_DOORBELL_RANGE, SIZE, 0);

	WREG32_SOC15(NBIO, 0, mmBIF_IH_DOORBELL_RANGE, ih_doorbell_range);
	}

	static uint32_t nbio_7_0_read_syshub_ind_mmr(struct amdgpu_device *adev, uint32_t offset)
	{
	uint32_t data;

	WREG32_SOC15(NBIO, 0, mmSYSHUB_INDEX, offset);
	data = RREG32_SOC15(NBIO, 0, mmSYSHUB_DATA);

	return data;
	}

	static void nbio_7_0_write_syshub_ind_mmr(struct amdgpu_device *adev, uint32_t offset,
	uint32_t data)
	{
	WREG32_SOC15(NBIO, 0, mmSYSHUB_INDEX, offset);
	WREG32_SOC15(NBIO, 0, mmSYSHUB_DATA, data);
	}

	static void nbio_v7_0_update_medium_grain_clock_gating(struct amdgpu_device *adev,
	bool enable)
	{
	uint32_t def, data;

	/* NBIF_MGCG_CTRL_LCLK */
	def = data = RREG32_PCIE(smnNBIF_MGCG_CTRL_LCLK);

	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG))
	data \|= NBIF_MGCG_CTRL_LCLK__NBIF_MGCG_EN_LCLK_MASK;
	else
	data &= ~NBIF_MGCG_CTRL_LCLK__NBIF_MGCG_EN_LCLK_MASK;

	if (def != data)
	WREG32_PCIE(smnNBIF_MGCG_CTRL_LCLK, data);

	/* SYSHUB_MGCG_CTRL_SOCCLK */
	def = data = nbio_7_0_read_syshub_ind_mmr(adev, ixSYSHUB_MMREG_IND_SYSHUB_MGCG_CTRL_SOCCLK);

	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG))
	data \|= SYSHUB_MMREG_DIRECT_SYSHUB_MGCG_CTRL_SOCCLK__SYSHUB_MGCG_EN_SOCCLK_MASK;
	else
	data &= ~SYSHUB_MMREG_DIRECT_SYSHUB_MGCG_CTRL_SOCCLK__SYSHUB_MGCG_EN_SOCCLK_MASK;

	if (def != data)
	nbio_7_0_write_syshub_ind_mmr(adev, ixSYSHUB_MMREG_IND_SYSHUB_MGCG_CTRL_SOCCLK, data);

	/* SYSHUB_MGCG_CTRL_SHUBCLK */
	def = data = nbio_7_0_read_syshub_ind_mmr(adev, ixSYSHUB_MMREG_IND_SYSHUB_MGCG_CTRL_SHUBCLK);

	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG))
	data \|= SYSHUB_MMREG_DIRECT_SYSHUB_MGCG_CTRL_SHUBCLK__SYSHUB_MGCG_EN_SHUBCLK_MASK;
	else
	data &= ~SYSHUB_MMREG_DIRECT_SYSHUB_MGCG_CTRL_SHUBCLK__SYSHUB_MGCG_EN_SHUBCLK_MASK;

	if (def != data)
	nbio_7_0_write_syshub_ind_mmr(adev, ixSYSHUB_MMREG_IND_SYSHUB_MGCG_CTRL_SHUBCLK, data);
	}

	static void nbio_v7_0_update_medium_grain_light_sleep(struct amdgpu_device *adev,
	bool enable)
	{
	uint32_t def, data;

	def = data = RREG32_PCIE(smnPCIE_CNTL2);
	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_LS)) {
	data \|= (PCIE_CNTL2__SLV_MEM_LS_EN_MASK \|
	PCIE_CNTL2__MST_MEM_LS_EN_MASK \|
	PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK);
	} else {
	data &= ~(PCIE_CNTL2__SLV_MEM_LS_EN_MASK \|
	PCIE_CNTL2__MST_MEM_LS_EN_MASK \|
	PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK);
	}

	if (def != data)
	WREG32_PCIE(smnPCIE_CNTL2, data);
	}

	static void nbio_v7_0_get_clockgating_state(struct amdgpu_device *adev,
	u64 *flags)
	{
	int data;

	/* AMD_CG_SUPPORT_BIF_MGCG */
	data = RREG32_PCIE(smnCPM_CONTROL);
	if (data & CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK)
	*flags \|= AMD_CG_SUPPORT_BIF_MGCG;

	/* AMD_CG_SUPPORT_BIF_LS */
	data = RREG32_PCIE(smnPCIE_CNTL2);
	if (data & PCIE_CNTL2__SLV_MEM_LS_EN_MASK)
	*flags \|= AMD_CG_SUPPORT_BIF_LS;
	}

	static void nbio_v7_0_ih_control(struct amdgpu_device *adev)
	{
	u32 interrupt_cntl;

	/* setup interrupt control */
	WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL2, adev->dummy_page_addr >> 8);
	interrupt_cntl = RREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL);
	/* INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=0 - dummy read disabled with msi, enabled without msi
	* INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=1 - dummy read controlled by IH_DUMMY_RD_EN
	*/
	interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_DUMMY_RD_OVERRIDE, 0);
	/* INTERRUPT_CNTL__IH_REQ_NONSNOOP_EN_MASK=1 if ring is in non-cacheable memory, e.g., vram */
	interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_REQ_NONSNOOP_EN, 0);
	WREG32_SOC15(NBIO, 0, mmINTERRUPT_CNTL, interrupt_cntl);
	}

	static u32 nbio_v7_0_get_hdp_flush_req_offset(struct amdgpu_device *adev)
	{
	return SOC15_REG_OFFSET(NBIO, 0, mmGPU_HDP_FLUSH_REQ);
	}

	static u32 nbio_v7_0_get_hdp_flush_done_offset(struct amdgpu_device *adev)
	{
	return SOC15_REG_OFFSET(NBIO, 0, mmGPU_HDP_FLUSH_DONE);
	}

	static u32 nbio_v7_0_get_pcie_index_offset(struct amdgpu_device *adev)
	{
	return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_INDEX2);
	}

	static u32 nbio_v7_0_get_pcie_data_offset(struct amdgpu_device *adev)
	{
	return SOC15_REG_OFFSET(NBIO, 0, mmPCIE_DATA2);
	}

	const struct nbio_hdp_flush_reg nbio_v7_0_hdp_flush_reg = {
	.ref_and_mask_cp0 = GPU_HDP_FLUSH_DONE__CP0_MASK,
	.ref_and_mask_cp1 = GPU_HDP_FLUSH_DONE__CP1_MASK,
	.ref_and_mask_cp2 = GPU_HDP_FLUSH_DONE__CP2_MASK,
	.ref_and_mask_cp3 = GPU_HDP_FLUSH_DONE__CP3_MASK,
	.ref_and_mask_cp4 = GPU_HDP_FLUSH_DONE__CP4_MASK,
	.ref_and_mask_cp5 = GPU_HDP_FLUSH_DONE__CP5_MASK,
	.ref_and_mask_cp6 = GPU_HDP_FLUSH_DONE__CP6_MASK,
	.ref_and_mask_cp7 = GPU_HDP_FLUSH_DONE__CP7_MASK,
	.ref_and_mask_cp8 = GPU_HDP_FLUSH_DONE__CP8_MASK,
	.ref_and_mask_cp9 = GPU_HDP_FLUSH_DONE__CP9_MASK,
	.ref_and_mask_sdma0 = GPU_HDP_FLUSH_DONE__SDMA0_MASK,
	.ref_and_mask_sdma1 = GPU_HDP_FLUSH_DONE__SDMA1_MASK,
	};

	static void nbio_v7_0_init_registers(struct amdgpu_device *adev)
	{
	}

	#define MMIO_REG_HOLE_OFFSET (0x80000 - PAGE_SIZE)

	static void nbio_v7_0_set_reg_remap(struct amdgpu_device *adev)
	{
	if (!amdgpu_sriov_vf(adev) && (PAGE_SIZE <= 4096)) {
	adev->rmmio_remap.reg_offset = MMIO_REG_HOLE_OFFSET;
	adev->rmmio_remap.bus_addr = adev->rmmio_base + MMIO_REG_HOLE_OFFSET;
	} else {
	adev->rmmio_remap.reg_offset =
	SOC15_REG_OFFSET(NBIO, 0, mmHDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
	adev->rmmio_remap.bus_addr = 0;
	}
	}

	const struct amdgpu_nbio_funcs nbio_v7_0_funcs = {
	.get_hdp_flush_req_offset = nbio_v7_0_get_hdp_flush_req_offset,
	.get_hdp_flush_done_offset = nbio_v7_0_get_hdp_flush_done_offset,
	.get_pcie_index_offset = nbio_v7_0_get_pcie_index_offset,
	.get_pcie_data_offset = nbio_v7_0_get_pcie_data_offset,
	.get_rev_id = nbio_v7_0_get_rev_id,
	.mc_access_enable = nbio_v7_0_mc_access_enable,
	.get_memsize = nbio_v7_0_get_memsize,
	.sdma_doorbell_range = nbio_v7_0_sdma_doorbell_range,
	.vcn_doorbell_range = nbio_v7_0_vcn_doorbell_range,
	.enable_doorbell_aperture = nbio_v7_0_enable_doorbell_aperture,
	.enable_doorbell_selfring_aperture = nbio_v7_0_enable_doorbell_selfring_aperture,
	.ih_doorbell_range = nbio_v7_0_ih_doorbell_range,
	.update_medium_grain_clock_gating = nbio_v7_0_update_medium_grain_clock_gating,
	.update_medium_grain_light_sleep = nbio_v7_0_update_medium_grain_light_sleep,
	.get_clockgating_state = nbio_v7_0_get_clockgating_state,
	.ih_control = nbio_v7_0_ih_control,
	.init_registers = nbio_v7_0_init_registers,
	.remap_hdp_registers = nbio_v7_0_remap_hdp_registers,
	.set_reg_remap = nbio_v7_0_set_reg_remap,
	};