drivers/gpu/drm/amd/amdgpu/nbio_v7_2.c - linux - Git at Google

 /*
  * Copyright 2020 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_2.h"

 #include "nbio/nbio_7_2_0_offset.h"
 #include "nbio/nbio_7_2_0_sh_mask.h"
 #include <uapi/linux/kfd_ioctl.h>

 #define regRCC_STRAP0_RCC_DEV0_EPF0_STRAP0_YC				0x0015
 #define regRCC_STRAP0_RCC_DEV0_EPF0_STRAP0_YC_BASE_IDX		2
 #define regBIF_BX0_BIF_FB_EN_YC								0x0100
 #define regBIF_BX0_BIF_FB_EN_YC_BASE_IDX					2
 #define regBIF1_PCIE_MST_CTRL_3								0x4601c6
 #define regBIF1_PCIE_MST_CTRL_3_BASE_IDX					5
 #define BIF1_PCIE_MST_CTRL_3__CI_SWUS_MAX_READ_REQUEST_SIZE_MODE__SHIFT \
 			0x1b
 #define BIF1_PCIE_MST_CTRL_3__CI_SWUS_MAX_READ_REQUEST_SIZE_PRIV__SHIFT \
 			0x1c
 #define BIF1_PCIE_MST_CTRL_3__CI_SWUS_MAX_READ_REQUEST_SIZE_MODE_MASK \
 			0x08000000L
 #define BIF1_PCIE_MST_CTRL_3__CI_SWUS_MAX_READ_REQUEST_SIZE_PRIV_MASK \
 			0x30000000L
 #define regBIF1_PCIE_TX_POWER_CTRL_1						0x460187
 #define regBIF1_PCIE_TX_POWER_CTRL_1_BASE_IDX				5
 #define BIF1_PCIE_TX_POWER_CTRL_1__MST_MEM_LS_EN_MASK		0x00000001L
 #define BIF1_PCIE_TX_POWER_CTRL_1__REPLAY_MEM_LS_EN_MASK	0x00000008L

 static void nbio_v7_2_remap_hdp_registers(struct amdgpu_device *adev)
 {
 	WREG32_SOC15(NBIO, 0, regBIF_BX0_REMAP_HDP_MEM_FLUSH_CNTL,
 		adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL);
 	WREG32_SOC15(NBIO, 0, regBIF_BX0_REMAP_HDP_REG_FLUSH_CNTL,
 		adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_REG_FLUSH_CNTL);
 }

 static u32 nbio_v7_2_get_rev_id(struct amdgpu_device *adev)
 {
 	u32 tmp;

 	switch (amdgpu_ip_version(adev, NBIO_HWIP, 0)) {
 	case IP_VERSION(7, 2, 1):
 	case IP_VERSION(7, 3, 0):
 	case IP_VERSION(7, 5, 0):
 		tmp = RREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_DEV0_EPF0_STRAP0_YC);
 		break;
 	default:
 		tmp = RREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_DEV0_EPF0_STRAP0);
 		break;
 	}

 	tmp &= RCC_STRAP0_RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0_MASK;
 	tmp >>= RCC_STRAP0_RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0__SHIFT;

 	return tmp;
 }

 static void nbio_v7_2_mc_access_enable(struct amdgpu_device *adev, bool enable)
 {
 	switch (amdgpu_ip_version(adev, NBIO_HWIP, 0)) {
 	case IP_VERSION(7, 2, 1):
 	case IP_VERSION(7, 3, 0):
 	case IP_VERSION(7, 5, 0):
 		if (enable)
 			WREG32_SOC15(NBIO, 0, regBIF_BX0_BIF_FB_EN_YC,
 				BIF_BX0_BIF_FB_EN__FB_READ_EN_MASK |
 				BIF_BX0_BIF_FB_EN__FB_WRITE_EN_MASK);
 		else
 			WREG32_SOC15(NBIO, 0, regBIF_BX0_BIF_FB_EN_YC, 0);
 	break;
 	default:
 		if (enable)
 			WREG32_SOC15(NBIO, 0, regBIF_BX0_BIF_FB_EN,
 				BIF_BX0_BIF_FB_EN__FB_READ_EN_MASK |
 				BIF_BX0_BIF_FB_EN__FB_WRITE_EN_MASK);
 		else
 			WREG32_SOC15(NBIO, 0, regBIF_BX0_BIF_FB_EN, 0);
 		break;
 	}
 }

 static u32 nbio_v7_2_get_memsize(struct amdgpu_device *adev)
 {
 	return RREG32_SOC15(NBIO, 0, regRCC_DEV0_EPF0_0_RCC_CONFIG_MEMSIZE);
 }

 static void nbio_v7_2_sdma_doorbell_range(struct amdgpu_device *adev, int instance,
 					  bool use_doorbell, int doorbell_index,
 					  int doorbell_size)
 {
 	u32 reg = SOC15_REG_OFFSET(NBIO, 0, regGDC0_BIF_SDMA0_DOORBELL_RANGE);
 	u32 doorbell_range = RREG32_PCIE_PORT(reg);

 	if (use_doorbell) {
 		doorbell_range = REG_SET_FIELD(doorbell_range,
 					       GDC0_BIF_SDMA0_DOORBELL_RANGE,
 					       OFFSET, doorbell_index);
 		doorbell_range = REG_SET_FIELD(doorbell_range,
 					       GDC0_BIF_SDMA0_DOORBELL_RANGE,
 					       SIZE, doorbell_size);
 	} else {
 		doorbell_range = REG_SET_FIELD(doorbell_range,
 					       GDC0_BIF_SDMA0_DOORBELL_RANGE,
 					       SIZE, 0);
 	}

 	WREG32_PCIE_PORT(reg, doorbell_range);
 }

 static void nbio_v7_2_vcn_doorbell_range(struct amdgpu_device *adev, bool use_doorbell,
 					 int doorbell_index, int instance)
 {
 	u32 reg = SOC15_REG_OFFSET(NBIO, 0, regGDC0_BIF_VCN0_DOORBELL_RANGE);
 	u32 doorbell_range = RREG32_PCIE_PORT(reg);

 	if (use_doorbell) {
 		doorbell_range = REG_SET_FIELD(doorbell_range,
 							GDC0_BIF_VCN0_DOORBELL_RANGE, OFFSET,
 							doorbell_index);
 		doorbell_range = REG_SET_FIELD(doorbell_range,
 							GDC0_BIF_VCN0_DOORBELL_RANGE, SIZE, 8);
 	} else {
 		doorbell_range = REG_SET_FIELD(doorbell_range,
 							GDC0_BIF_VCN0_DOORBELL_RANGE, SIZE, 0);
 	}

 	WREG32_PCIE_PORT(reg, doorbell_range);
 }

 static void nbio_v7_2_enable_doorbell_aperture(struct amdgpu_device *adev,
 					       bool enable)
 {
 	u32 reg;

 	reg = RREG32_SOC15(NBIO, 0, regRCC_DEV0_EPF0_0_RCC_DOORBELL_APER_EN);
 	reg = REG_SET_FIELD(reg, RCC_DEV0_EPF0_0_RCC_DOORBELL_APER_EN,
 			    BIF_DOORBELL_APER_EN, enable ? 1 : 0);

 	WREG32_SOC15(NBIO, 0, regRCC_DEV0_EPF0_0_RCC_DOORBELL_APER_EN, reg);
 }

 static void nbio_v7_2_enable_doorbell_selfring_aperture(struct amdgpu_device *adev,
 							bool enable)
 {
 	u32 tmp = 0;

 	if (enable) {
 		tmp = REG_SET_FIELD(tmp, BIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_CNTL,
 				DOORBELL_SELFRING_GPA_APER_EN, 1) |
 			REG_SET_FIELD(tmp, BIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_CNTL,
 				DOORBELL_SELFRING_GPA_APER_MODE, 1) |
 			REG_SET_FIELD(tmp, BIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_CNTL,
 				DOORBELL_SELFRING_GPA_APER_SIZE, 0);

 		WREG32_SOC15(NBIO, 0,
 			regBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_BASE_LOW,
 			lower_32_bits(adev->doorbell.base));
 		WREG32_SOC15(NBIO, 0,
 			regBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_BASE_HIGH,
 			upper_32_bits(adev->doorbell.base));
 	}

 	WREG32_SOC15(NBIO, 0, regBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_CNTL,
 		tmp);
 }


 static void nbio_v7_2_ih_doorbell_range(struct amdgpu_device *adev,
 					bool use_doorbell, int doorbell_index)
 {
 	u32 ih_doorbell_range = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regGDC0_BIF_IH_DOORBELL_RANGE));

 	if (use_doorbell) {
 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
 						  GDC0_BIF_IH_DOORBELL_RANGE, OFFSET,
 						  doorbell_index);
 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
 						  GDC0_BIF_IH_DOORBELL_RANGE, SIZE,
 						  2);
 	} else {
 		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
 						  GDC0_BIF_IH_DOORBELL_RANGE, SIZE,
 						  0);
 	}

 	WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regGDC0_BIF_IH_DOORBELL_RANGE),
 			 ih_doorbell_range);
 }

 static void nbio_v7_2_ih_control(struct amdgpu_device *adev)
 {
 	u32 interrupt_cntl;

 	/* setup interrupt control */
 	WREG32_SOC15(NBIO, 0, regBIF_BX0_INTERRUPT_CNTL2,
 		     adev->dummy_page_addr >> 8);

 	interrupt_cntl = RREG32_SOC15(NBIO, 0, regBIF_BX0_INTERRUPT_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, BIF_BX0_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, BIF_BX0_INTERRUPT_CNTL,
 				       IH_REQ_NONSNOOP_EN, 0);

 	WREG32_SOC15(NBIO, 0, regBIF_BX0_INTERRUPT_CNTL, interrupt_cntl);
 }

 static void nbio_v7_2_update_medium_grain_clock_gating(struct amdgpu_device *adev,
 						       bool enable)
 {
 	uint32_t def, data;

 	def = data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regCPM_CONTROL));
 	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG)) {
 		data |= (CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK |
 			 CPM_CONTROL__TXCLK_DYN_GATE_ENABLE_MASK |
 			 CPM_CONTROL__TXCLK_LCNT_GATE_ENABLE_MASK |
 			 CPM_CONTROL__TXCLK_REGS_GATE_ENABLE_MASK |
 			 CPM_CONTROL__TXCLK_PRBS_GATE_ENABLE_MASK |
 			 CPM_CONTROL__REFCLK_REGS_GATE_ENABLE_MASK);
 	} else {
 		data &= ~(CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK |
 			  CPM_CONTROL__TXCLK_DYN_GATE_ENABLE_MASK |
 			  CPM_CONTROL__TXCLK_LCNT_GATE_ENABLE_MASK |
 			  CPM_CONTROL__TXCLK_REGS_GATE_ENABLE_MASK |
 			  CPM_CONTROL__TXCLK_PRBS_GATE_ENABLE_MASK |
 			  CPM_CONTROL__REFCLK_REGS_GATE_ENABLE_MASK);
 	}

 	if (def != data)
 		WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regCPM_CONTROL), data);
 }

 static void nbio_v7_2_update_medium_grain_light_sleep(struct amdgpu_device *adev,
 						      bool enable)
 {
 	uint32_t def, data;

 	switch (amdgpu_ip_version(adev, NBIO_HWIP, 0)) {
 	case IP_VERSION(7, 2, 1):
 	case IP_VERSION(7, 3, 0):
 	case IP_VERSION(7, 5, 0):
 		def = data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CNTL2));
 		if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_LS))
 			data |= PCIE_CNTL2__SLV_MEM_LS_EN_MASK;
 		else
 			data &= ~PCIE_CNTL2__SLV_MEM_LS_EN_MASK;

 		if (def != data)
 			WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CNTL2), data);

 		def = data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0,
 			regBIF1_PCIE_TX_POWER_CTRL_1));
 		if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_LS))
 			data |= (BIF1_PCIE_TX_POWER_CTRL_1__MST_MEM_LS_EN_MASK |
 				BIF1_PCIE_TX_POWER_CTRL_1__REPLAY_MEM_LS_EN_MASK);
 		else
 			data &= ~(BIF1_PCIE_TX_POWER_CTRL_1__MST_MEM_LS_EN_MASK |
 				BIF1_PCIE_TX_POWER_CTRL_1__REPLAY_MEM_LS_EN_MASK);

 		if (def != data)
 			WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regBIF1_PCIE_TX_POWER_CTRL_1),
 				data);
 		break;
 	default:
 		def = data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_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_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CNTL2), data);
 		break;
 	}
 }

 static void nbio_v7_2_get_clockgating_state(struct amdgpu_device *adev,
 					    u64 *flags)
 {
 	int data;

 	/* AMD_CG_SUPPORT_BIF_MGCG */
 	data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regCPM_CONTROL));
 	if (data & CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK)
 		*flags |= AMD_CG_SUPPORT_BIF_MGCG;

 	/* AMD_CG_SUPPORT_BIF_LS */
 	data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CNTL2));
 	if (data & PCIE_CNTL2__SLV_MEM_LS_EN_MASK)
 		*flags |= AMD_CG_SUPPORT_BIF_LS;
 }

 static u32 nbio_v7_2_get_hdp_flush_req_offset(struct amdgpu_device *adev)
 {
 	return SOC15_REG_OFFSET(NBIO, 0, regBIF_BX_PF0_GPU_HDP_FLUSH_REQ);
 }

 static u32 nbio_v7_2_get_hdp_flush_done_offset(struct amdgpu_device *adev)
 {
 	return SOC15_REG_OFFSET(NBIO, 0, regBIF_BX_PF0_GPU_HDP_FLUSH_DONE);
 }

 static u32 nbio_v7_2_get_pcie_index_offset(struct amdgpu_device *adev)
 {
 	return SOC15_REG_OFFSET(NBIO, 0, regBIF_BX0_PCIE_INDEX2);
 }

 static u32 nbio_v7_2_get_pcie_data_offset(struct amdgpu_device *adev)
 {
 	return SOC15_REG_OFFSET(NBIO, 0, regBIF_BX0_PCIE_DATA2);
 }

 static u32 nbio_v7_2_get_pcie_port_index_offset(struct amdgpu_device *adev)
 {
 	return SOC15_REG_OFFSET(NBIO, 0, regBIF_BX_PF0_RSMU_INDEX);
 }

 static u32 nbio_v7_2_get_pcie_port_data_offset(struct amdgpu_device *adev)
 {
 	return SOC15_REG_OFFSET(NBIO, 0, regBIF_BX_PF0_RSMU_DATA);
 }

 const struct nbio_hdp_flush_reg nbio_v7_2_hdp_flush_reg = {
 	.ref_and_mask_cp0 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP0_MASK,
 	.ref_and_mask_cp1 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP1_MASK,
 	.ref_and_mask_cp2 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP2_MASK,
 	.ref_and_mask_cp3 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP3_MASK,
 	.ref_and_mask_cp4 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP4_MASK,
 	.ref_and_mask_cp5 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP5_MASK,
 	.ref_and_mask_cp6 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP6_MASK,
 	.ref_and_mask_cp7 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP7_MASK,
 	.ref_and_mask_cp8 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP8_MASK,
 	.ref_and_mask_cp9 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP9_MASK,
 	.ref_and_mask_sdma0 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__SDMA0_MASK,
 	.ref_and_mask_sdma1 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__SDMA1_MASK,
 };

 static void nbio_v7_2_init_registers(struct amdgpu_device *adev)
 {
 	uint32_t def, data;
 	switch (amdgpu_ip_version(adev, NBIO_HWIP, 0)) {
 	case IP_VERSION(7, 2, 1):
 	case IP_VERSION(7, 3, 0):
 	case IP_VERSION(7, 5, 0):
 		def = data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regBIF1_PCIE_MST_CTRL_3));
 		data = REG_SET_FIELD(data, BIF1_PCIE_MST_CTRL_3,
 			CI_SWUS_MAX_READ_REQUEST_SIZE_MODE, 1);
 		data = REG_SET_FIELD(data, BIF1_PCIE_MST_CTRL_3,
 			CI_SWUS_MAX_READ_REQUEST_SIZE_PRIV, 1);

 		if (def != data)
 			WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regBIF1_PCIE_MST_CTRL_3), data);
 		break;
 	default:
 		def = data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CONFIG_CNTL));
 		data = REG_SET_FIELD(data, PCIE_CONFIG_CNTL,
 			CI_SWUS_MAX_READ_REQUEST_SIZE_MODE, 1);
 		data = REG_SET_FIELD(data, PCIE_CONFIG_CNTL,
 			CI_SWUS_MAX_READ_REQUEST_SIZE_PRIV, 1);

 		if (def != data)
 			WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CONFIG_CNTL), data);
 		break;
 	}

 	switch (amdgpu_ip_version(adev, NBIO_HWIP, 0)) {
 	case IP_VERSION(7, 3, 0):
 	case IP_VERSION(7, 5, 1):
 		data = RREG32_SOC15(NBIO, 0, regRCC_DEV2_EPF0_STRAP2);
 		data &= ~RCC_DEV2_EPF0_STRAP2__STRAP_NO_SOFT_RESET_DEV2_F0_MASK;
 		WREG32_SOC15(NBIO, 0, regRCC_DEV2_EPF0_STRAP2, data);
 		break;
 	}
 }

 #define MMIO_REG_HOLE_OFFSET (0x80000 - PAGE_SIZE)

 static void nbio_v7_2_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,
 					 regBIF_BX_PF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
 		adev->rmmio_remap.bus_addr = 0;
 	}
 }

 const struct amdgpu_nbio_funcs nbio_v7_2_funcs = {
 	.get_hdp_flush_req_offset = nbio_v7_2_get_hdp_flush_req_offset,
 	.get_hdp_flush_done_offset = nbio_v7_2_get_hdp_flush_done_offset,
 	.get_pcie_index_offset = nbio_v7_2_get_pcie_index_offset,
 	.get_pcie_data_offset = nbio_v7_2_get_pcie_data_offset,
 	.get_pcie_port_index_offset = nbio_v7_2_get_pcie_port_index_offset,
 	.get_pcie_port_data_offset = nbio_v7_2_get_pcie_port_data_offset,
 	.get_rev_id = nbio_v7_2_get_rev_id,
 	.mc_access_enable = nbio_v7_2_mc_access_enable,
 	.get_memsize = nbio_v7_2_get_memsize,
 	.sdma_doorbell_range = nbio_v7_2_sdma_doorbell_range,
 	.vcn_doorbell_range = nbio_v7_2_vcn_doorbell_range,
 	.enable_doorbell_aperture = nbio_v7_2_enable_doorbell_aperture,
 	.enable_doorbell_selfring_aperture = nbio_v7_2_enable_doorbell_selfring_aperture,
 	.ih_doorbell_range = nbio_v7_2_ih_doorbell_range,
 	.update_medium_grain_clock_gating = nbio_v7_2_update_medium_grain_clock_gating,
 	.update_medium_grain_light_sleep = nbio_v7_2_update_medium_grain_light_sleep,
 	.get_clockgating_state = nbio_v7_2_get_clockgating_state,
 	.ih_control = nbio_v7_2_ih_control,
 	.init_registers = nbio_v7_2_init_registers,
 	.remap_hdp_registers = nbio_v7_2_remap_hdp_registers,
 	.set_reg_remap = nbio_v7_2_set_reg_remap,
 };
	/*
	* Copyright 2020 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_2.h"

	#include "nbio/nbio_7_2_0_offset.h"
	#include "nbio/nbio_7_2_0_sh_mask.h"
	#include <uapi/linux/kfd_ioctl.h>

	#define regRCC_STRAP0_RCC_DEV0_EPF0_STRAP0_YC 0x0015
	#define regRCC_STRAP0_RCC_DEV0_EPF0_STRAP0_YC_BASE_IDX 2
	#define regBIF_BX0_BIF_FB_EN_YC 0x0100
	#define regBIF_BX0_BIF_FB_EN_YC_BASE_IDX 2
	#define regBIF1_PCIE_MST_CTRL_3 0x4601c6
	#define regBIF1_PCIE_MST_CTRL_3_BASE_IDX 5
	#define BIF1_PCIE_MST_CTRL_3__CI_SWUS_MAX_READ_REQUEST_SIZE_MODE__SHIFT \
	0x1b
	#define BIF1_PCIE_MST_CTRL_3__CI_SWUS_MAX_READ_REQUEST_SIZE_PRIV__SHIFT \
	0x1c
	#define BIF1_PCIE_MST_CTRL_3__CI_SWUS_MAX_READ_REQUEST_SIZE_MODE_MASK \
	0x08000000L
	#define BIF1_PCIE_MST_CTRL_3__CI_SWUS_MAX_READ_REQUEST_SIZE_PRIV_MASK \
	0x30000000L
	#define regBIF1_PCIE_TX_POWER_CTRL_1 0x460187
	#define regBIF1_PCIE_TX_POWER_CTRL_1_BASE_IDX 5
	#define BIF1_PCIE_TX_POWER_CTRL_1__MST_MEM_LS_EN_MASK 0x00000001L
	#define BIF1_PCIE_TX_POWER_CTRL_1__REPLAY_MEM_LS_EN_MASK 0x00000008L

	static void nbio_v7_2_remap_hdp_registers(struct amdgpu_device *adev)
	{
	WREG32_SOC15(NBIO, 0, regBIF_BX0_REMAP_HDP_MEM_FLUSH_CNTL,
	adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL);
	WREG32_SOC15(NBIO, 0, regBIF_BX0_REMAP_HDP_REG_FLUSH_CNTL,
	adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_REG_FLUSH_CNTL);
	}

	static u32 nbio_v7_2_get_rev_id(struct amdgpu_device *adev)
	{
	u32 tmp;

	switch (amdgpu_ip_version(adev, NBIO_HWIP, 0)) {
	case IP_VERSION(7, 2, 1):
	case IP_VERSION(7, 3, 0):
	case IP_VERSION(7, 5, 0):
	tmp = RREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_DEV0_EPF0_STRAP0_YC);
	break;
	default:
	tmp = RREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_DEV0_EPF0_STRAP0);
	break;
	}

	tmp &= RCC_STRAP0_RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0_MASK;
	tmp >>= RCC_STRAP0_RCC_DEV0_EPF0_STRAP0__STRAP_ATI_REV_ID_DEV0_F0__SHIFT;

	return tmp;
	}

	static void nbio_v7_2_mc_access_enable(struct amdgpu_device *adev, bool enable)
	{
	switch (amdgpu_ip_version(adev, NBIO_HWIP, 0)) {
	case IP_VERSION(7, 2, 1):
	case IP_VERSION(7, 3, 0):
	case IP_VERSION(7, 5, 0):
	if (enable)
	WREG32_SOC15(NBIO, 0, regBIF_BX0_BIF_FB_EN_YC,
	BIF_BX0_BIF_FB_EN__FB_READ_EN_MASK \|
	BIF_BX0_BIF_FB_EN__FB_WRITE_EN_MASK);
	else
	WREG32_SOC15(NBIO, 0, regBIF_BX0_BIF_FB_EN_YC, 0);
	break;
	default:
	if (enable)
	WREG32_SOC15(NBIO, 0, regBIF_BX0_BIF_FB_EN,
	BIF_BX0_BIF_FB_EN__FB_READ_EN_MASK \|
	BIF_BX0_BIF_FB_EN__FB_WRITE_EN_MASK);
	else
	WREG32_SOC15(NBIO, 0, regBIF_BX0_BIF_FB_EN, 0);
	break;
	}
	}

	static u32 nbio_v7_2_get_memsize(struct amdgpu_device *adev)
	{
	return RREG32_SOC15(NBIO, 0, regRCC_DEV0_EPF0_0_RCC_CONFIG_MEMSIZE);
	}

	static void nbio_v7_2_sdma_doorbell_range(struct amdgpu_device *adev, int instance,
	bool use_doorbell, int doorbell_index,
	int doorbell_size)
	{
	u32 reg = SOC15_REG_OFFSET(NBIO, 0, regGDC0_BIF_SDMA0_DOORBELL_RANGE);
	u32 doorbell_range = RREG32_PCIE_PORT(reg);

	if (use_doorbell) {
	doorbell_range = REG_SET_FIELD(doorbell_range,
	GDC0_BIF_SDMA0_DOORBELL_RANGE,
	OFFSET, doorbell_index);
	doorbell_range = REG_SET_FIELD(doorbell_range,
	GDC0_BIF_SDMA0_DOORBELL_RANGE,
	SIZE, doorbell_size);
	} else {
	doorbell_range = REG_SET_FIELD(doorbell_range,
	GDC0_BIF_SDMA0_DOORBELL_RANGE,
	SIZE, 0);
	}

	WREG32_PCIE_PORT(reg, doorbell_range);
	}

	static void nbio_v7_2_vcn_doorbell_range(struct amdgpu_device *adev, bool use_doorbell,
	int doorbell_index, int instance)
	{
	u32 reg = SOC15_REG_OFFSET(NBIO, 0, regGDC0_BIF_VCN0_DOORBELL_RANGE);
	u32 doorbell_range = RREG32_PCIE_PORT(reg);

	if (use_doorbell) {
	doorbell_range = REG_SET_FIELD(doorbell_range,
	GDC0_BIF_VCN0_DOORBELL_RANGE, OFFSET,
	doorbell_index);
	doorbell_range = REG_SET_FIELD(doorbell_range,
	GDC0_BIF_VCN0_DOORBELL_RANGE, SIZE, 8);
	} else {
	doorbell_range = REG_SET_FIELD(doorbell_range,
	GDC0_BIF_VCN0_DOORBELL_RANGE, SIZE, 0);
	}

	WREG32_PCIE_PORT(reg, doorbell_range);
	}

	static void nbio_v7_2_enable_doorbell_aperture(struct amdgpu_device *adev,
	bool enable)
	{
	u32 reg;

	reg = RREG32_SOC15(NBIO, 0, regRCC_DEV0_EPF0_0_RCC_DOORBELL_APER_EN);
	reg = REG_SET_FIELD(reg, RCC_DEV0_EPF0_0_RCC_DOORBELL_APER_EN,
	BIF_DOORBELL_APER_EN, enable ? 1 : 0);

	WREG32_SOC15(NBIO, 0, regRCC_DEV0_EPF0_0_RCC_DOORBELL_APER_EN, reg);
	}

	static void nbio_v7_2_enable_doorbell_selfring_aperture(struct amdgpu_device *adev,
	bool enable)
	{
	u32 tmp = 0;

	if (enable) {
	tmp = REG_SET_FIELD(tmp, BIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_CNTL,
	DOORBELL_SELFRING_GPA_APER_EN, 1) \|
	REG_SET_FIELD(tmp, BIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_CNTL,
	DOORBELL_SELFRING_GPA_APER_MODE, 1) \|
	REG_SET_FIELD(tmp, BIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_CNTL,
	DOORBELL_SELFRING_GPA_APER_SIZE, 0);

	WREG32_SOC15(NBIO, 0,
	regBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_BASE_LOW,
	lower_32_bits(adev->doorbell.base));
	WREG32_SOC15(NBIO, 0,
	regBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_BASE_HIGH,
	upper_32_bits(adev->doorbell.base));
	}

	WREG32_SOC15(NBIO, 0, regBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_CNTL,
	tmp);
	}


	static void nbio_v7_2_ih_doorbell_range(struct amdgpu_device *adev,
	bool use_doorbell, int doorbell_index)
	{
	u32 ih_doorbell_range = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regGDC0_BIF_IH_DOORBELL_RANGE));

	if (use_doorbell) {
	ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
	GDC0_BIF_IH_DOORBELL_RANGE, OFFSET,
	doorbell_index);
	ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
	GDC0_BIF_IH_DOORBELL_RANGE, SIZE,
	2);
	} else {
	ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
	GDC0_BIF_IH_DOORBELL_RANGE, SIZE,
	0);
	}

	WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regGDC0_BIF_IH_DOORBELL_RANGE),
	ih_doorbell_range);
	}

	static void nbio_v7_2_ih_control(struct amdgpu_device *adev)
	{
	u32 interrupt_cntl;

	/* setup interrupt control */
	WREG32_SOC15(NBIO, 0, regBIF_BX0_INTERRUPT_CNTL2,
	adev->dummy_page_addr >> 8);

	interrupt_cntl = RREG32_SOC15(NBIO, 0, regBIF_BX0_INTERRUPT_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, BIF_BX0_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, BIF_BX0_INTERRUPT_CNTL,
	IH_REQ_NONSNOOP_EN, 0);

	WREG32_SOC15(NBIO, 0, regBIF_BX0_INTERRUPT_CNTL, interrupt_cntl);
	}

	static void nbio_v7_2_update_medium_grain_clock_gating(struct amdgpu_device *adev,
	bool enable)
	{
	uint32_t def, data;

	def = data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regCPM_CONTROL));
	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG)) {
	data \|= (CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK \|
	CPM_CONTROL__TXCLK_DYN_GATE_ENABLE_MASK \|
	CPM_CONTROL__TXCLK_LCNT_GATE_ENABLE_MASK \|
	CPM_CONTROL__TXCLK_REGS_GATE_ENABLE_MASK \|
	CPM_CONTROL__TXCLK_PRBS_GATE_ENABLE_MASK \|
	CPM_CONTROL__REFCLK_REGS_GATE_ENABLE_MASK);
	} else {
	data &= ~(CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK \|
	CPM_CONTROL__TXCLK_DYN_GATE_ENABLE_MASK \|
	CPM_CONTROL__TXCLK_LCNT_GATE_ENABLE_MASK \|
	CPM_CONTROL__TXCLK_REGS_GATE_ENABLE_MASK \|
	CPM_CONTROL__TXCLK_PRBS_GATE_ENABLE_MASK \|
	CPM_CONTROL__REFCLK_REGS_GATE_ENABLE_MASK);
	}

	if (def != data)
	WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regCPM_CONTROL), data);
	}

	static void nbio_v7_2_update_medium_grain_light_sleep(struct amdgpu_device *adev,
	bool enable)
	{
	uint32_t def, data;

	switch (amdgpu_ip_version(adev, NBIO_HWIP, 0)) {
	case IP_VERSION(7, 2, 1):
	case IP_VERSION(7, 3, 0):
	case IP_VERSION(7, 5, 0):
	def = data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CNTL2));
	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_LS))
	data \|= PCIE_CNTL2__SLV_MEM_LS_EN_MASK;
	else
	data &= ~PCIE_CNTL2__SLV_MEM_LS_EN_MASK;

	if (def != data)
	WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CNTL2), data);

	def = data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0,
	regBIF1_PCIE_TX_POWER_CTRL_1));
	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_LS))
	data \|= (BIF1_PCIE_TX_POWER_CTRL_1__MST_MEM_LS_EN_MASK \|
	BIF1_PCIE_TX_POWER_CTRL_1__REPLAY_MEM_LS_EN_MASK);
	else
	data &= ~(BIF1_PCIE_TX_POWER_CTRL_1__MST_MEM_LS_EN_MASK \|
	BIF1_PCIE_TX_POWER_CTRL_1__REPLAY_MEM_LS_EN_MASK);

	if (def != data)
	WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regBIF1_PCIE_TX_POWER_CTRL_1),
	data);
	break;
	default:
	def = data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_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_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CNTL2), data);
	break;
	}
	}

	static void nbio_v7_2_get_clockgating_state(struct amdgpu_device *adev,
	u64 *flags)
	{
	int data;

	/* AMD_CG_SUPPORT_BIF_MGCG */
	data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regCPM_CONTROL));
	if (data & CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK)
	*flags \|= AMD_CG_SUPPORT_BIF_MGCG;

	/* AMD_CG_SUPPORT_BIF_LS */
	data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CNTL2));
	if (data & PCIE_CNTL2__SLV_MEM_LS_EN_MASK)
	*flags \|= AMD_CG_SUPPORT_BIF_LS;
	}

	static u32 nbio_v7_2_get_hdp_flush_req_offset(struct amdgpu_device *adev)
	{
	return SOC15_REG_OFFSET(NBIO, 0, regBIF_BX_PF0_GPU_HDP_FLUSH_REQ);
	}

	static u32 nbio_v7_2_get_hdp_flush_done_offset(struct amdgpu_device *adev)
	{
	return SOC15_REG_OFFSET(NBIO, 0, regBIF_BX_PF0_GPU_HDP_FLUSH_DONE);
	}

	static u32 nbio_v7_2_get_pcie_index_offset(struct amdgpu_device *adev)
	{
	return SOC15_REG_OFFSET(NBIO, 0, regBIF_BX0_PCIE_INDEX2);
	}

	static u32 nbio_v7_2_get_pcie_data_offset(struct amdgpu_device *adev)
	{
	return SOC15_REG_OFFSET(NBIO, 0, regBIF_BX0_PCIE_DATA2);
	}

	static u32 nbio_v7_2_get_pcie_port_index_offset(struct amdgpu_device *adev)
	{
	return SOC15_REG_OFFSET(NBIO, 0, regBIF_BX_PF0_RSMU_INDEX);
	}

	static u32 nbio_v7_2_get_pcie_port_data_offset(struct amdgpu_device *adev)
	{
	return SOC15_REG_OFFSET(NBIO, 0, regBIF_BX_PF0_RSMU_DATA);
	}

	const struct nbio_hdp_flush_reg nbio_v7_2_hdp_flush_reg = {
	.ref_and_mask_cp0 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP0_MASK,
	.ref_and_mask_cp1 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP1_MASK,
	.ref_and_mask_cp2 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP2_MASK,
	.ref_and_mask_cp3 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP3_MASK,
	.ref_and_mask_cp4 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP4_MASK,
	.ref_and_mask_cp5 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP5_MASK,
	.ref_and_mask_cp6 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP6_MASK,
	.ref_and_mask_cp7 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP7_MASK,
	.ref_and_mask_cp8 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP8_MASK,
	.ref_and_mask_cp9 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP9_MASK,
	.ref_and_mask_sdma0 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__SDMA0_MASK,
	.ref_and_mask_sdma1 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__SDMA1_MASK,
	};

	static void nbio_v7_2_init_registers(struct amdgpu_device *adev)
	{
	uint32_t def, data;
	switch (amdgpu_ip_version(adev, NBIO_HWIP, 0)) {
	case IP_VERSION(7, 2, 1):
	case IP_VERSION(7, 3, 0):
	case IP_VERSION(7, 5, 0):
	def = data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regBIF1_PCIE_MST_CTRL_3));
	data = REG_SET_FIELD(data, BIF1_PCIE_MST_CTRL_3,
	CI_SWUS_MAX_READ_REQUEST_SIZE_MODE, 1);
	data = REG_SET_FIELD(data, BIF1_PCIE_MST_CTRL_3,
	CI_SWUS_MAX_READ_REQUEST_SIZE_PRIV, 1);

	if (def != data)
	WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regBIF1_PCIE_MST_CTRL_3), data);
	break;
	default:
	def = data = RREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CONFIG_CNTL));
	data = REG_SET_FIELD(data, PCIE_CONFIG_CNTL,
	CI_SWUS_MAX_READ_REQUEST_SIZE_MODE, 1);
	data = REG_SET_FIELD(data, PCIE_CONFIG_CNTL,
	CI_SWUS_MAX_READ_REQUEST_SIZE_PRIV, 1);

	if (def != data)
	WREG32_PCIE_PORT(SOC15_REG_OFFSET(NBIO, 0, regPCIE_CONFIG_CNTL), data);
	break;
	}

	switch (amdgpu_ip_version(adev, NBIO_HWIP, 0)) {
	case IP_VERSION(7, 3, 0):
	case IP_VERSION(7, 5, 1):
	data = RREG32_SOC15(NBIO, 0, regRCC_DEV2_EPF0_STRAP2);
	data &= ~RCC_DEV2_EPF0_STRAP2__STRAP_NO_SOFT_RESET_DEV2_F0_MASK;
	WREG32_SOC15(NBIO, 0, regRCC_DEV2_EPF0_STRAP2, data);
	break;
	}
	}

	#define MMIO_REG_HOLE_OFFSET (0x80000 - PAGE_SIZE)

	static void nbio_v7_2_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,
	regBIF_BX_PF0_HDP_MEM_COHERENCY_FLUSH_CNTL) << 2;
	adev->rmmio_remap.bus_addr = 0;
	}
	}

	const struct amdgpu_nbio_funcs nbio_v7_2_funcs = {
	.get_hdp_flush_req_offset = nbio_v7_2_get_hdp_flush_req_offset,
	.get_hdp_flush_done_offset = nbio_v7_2_get_hdp_flush_done_offset,
	.get_pcie_index_offset = nbio_v7_2_get_pcie_index_offset,
	.get_pcie_data_offset = nbio_v7_2_get_pcie_data_offset,
	.get_pcie_port_index_offset = nbio_v7_2_get_pcie_port_index_offset,
	.get_pcie_port_data_offset = nbio_v7_2_get_pcie_port_data_offset,
	.get_rev_id = nbio_v7_2_get_rev_id,
	.mc_access_enable = nbio_v7_2_mc_access_enable,
	.get_memsize = nbio_v7_2_get_memsize,
	.sdma_doorbell_range = nbio_v7_2_sdma_doorbell_range,
	.vcn_doorbell_range = nbio_v7_2_vcn_doorbell_range,
	.enable_doorbell_aperture = nbio_v7_2_enable_doorbell_aperture,
	.enable_doorbell_selfring_aperture = nbio_v7_2_enable_doorbell_selfring_aperture,
	.ih_doorbell_range = nbio_v7_2_ih_doorbell_range,
	.update_medium_grain_clock_gating = nbio_v7_2_update_medium_grain_clock_gating,
	.update_medium_grain_light_sleep = nbio_v7_2_update_medium_grain_light_sleep,
	.get_clockgating_state = nbio_v7_2_get_clockgating_state,
	.ih_control = nbio_v7_2_ih_control,
	.init_registers = nbio_v7_2_init_registers,
	.remap_hdp_registers = nbio_v7_2_remap_hdp_registers,
	.set_reg_remap = nbio_v7_2_set_reg_remap,
	};