drivers/gpu/drm/amd/amdgpu/nbio_v6_1.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_v6_1.h"

 #include "vega10/soc15ip.h"
 #include "vega10/NBIO/nbio_6_1_default.h"
 #include "vega10/NBIO/nbio_6_1_offset.h"
 #include "vega10/NBIO/nbio_6_1_sh_mask.h"
 #include "vega10/vega10_enum.h"

 #define smnCPM_CONTROL                                                                                  0x11180460
 #define smnPCIE_CNTL2                                                                                   0x11180070
 #define smnPCIE_CONFIG_CNTL                                                                             0x11180044

 u32 nbio_v6_1_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;
 }

 u32 nbio_v6_1_get_atombios_scratch_regs(struct amdgpu_device *adev,
 					uint32_t idx)
 {
 	return RREG32_SOC15_OFFSET(NBIO, 0, mmBIOS_SCRATCH_0, idx);
 }

 void nbio_v6_1_set_atombios_scratch_regs(struct amdgpu_device *adev,
 					 uint32_t idx, uint32_t val)
 {
 	WREG32_SOC15_OFFSET(NBIO, 0, mmBIOS_SCRATCH_0, idx, val);
 }

 void nbio_v6_1_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);
 }

 void nbio_v6_1_hdp_flush(struct amdgpu_device *adev)
 {
 	WREG32_SOC15_NO_KIQ(NBIO, 0, mmBIF_BX_PF0_HDP_MEM_COHERENCY_FLUSH_CNTL, 0);
 }

 u32 nbio_v6_1_get_memsize(struct amdgpu_device *adev)
 {
 	return RREG32_SOC15(NBIO, 0, mmRCC_PF_0_0_RCC_CONFIG_MEMSIZE);
 }

 static const u32 nbio_sdma_doorbell_range_reg[] =
 {
 	SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA0_DOORBELL_RANGE),
 	SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA1_DOORBELL_RANGE)
 };

 void nbio_v6_1_sdma_doorbell_range(struct amdgpu_device *adev, int instance,
 				  bool use_doorbell, int doorbell_index)
 {
 	u32 doorbell_range = RREG32(nbio_sdma_doorbell_range_reg[instance]);

 	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, 2);
 	} else
 		doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 0);

 	WREG32(nbio_sdma_doorbell_range_reg[instance], doorbell_range);
 }

 void nbio_v6_1_enable_doorbell_aperture(struct amdgpu_device *adev,
 					bool enable)
 {
 	WREG32_FIELD15(NBIO, 0, RCC_PF_0_0_RCC_DOORBELL_APER_EN, BIF_DOORBELL_APER_EN, enable ? 1 : 0);
 }

 void nbio_v6_1_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, mmBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_BASE_LOW,
 			     lower_32_bits(adev->doorbell.base));
 		WREG32_SOC15(NBIO, 0, mmBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_BASE_HIGH,
 			     upper_32_bits(adev->doorbell.base));
 	}

 	WREG32_SOC15(NBIO, 0, mmBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_CNTL, tmp);
 }


 void nbio_v6_1_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);
 }

 void nbio_v6_1_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);
 }

 void nbio_v6_1_update_medium_grain_clock_gating(struct amdgpu_device *adev,
 						bool enable)
 {
 	uint32_t def, data;

 	def = data = RREG32_PCIE(smnCPM_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_PERM_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_PERM_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(smnCPM_CONTROL, data);
 }

 void nbio_v6_1_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);
 }

 void nbio_v6_1_get_clockgating_state(struct amdgpu_device *adev, u32 *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;
 }

 struct nbio_hdp_flush_reg nbio_v6_1_hdp_flush_reg;
 struct nbio_pcie_index_data nbio_v6_1_pcie_index_data;

 int nbio_v6_1_init(struct amdgpu_device *adev)
 {
 	nbio_v6_1_hdp_flush_reg.hdp_flush_req_offset = SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_GPU_HDP_FLUSH_REQ);
 	nbio_v6_1_hdp_flush_reg.hdp_flush_done_offset = SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_GPU_HDP_FLUSH_DONE);
 	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp0 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP0_MASK;
 	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp1 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP1_MASK;
 	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp2 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP2_MASK;
 	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp3 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP3_MASK;
 	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp4 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP4_MASK;
 	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp5 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP5_MASK;
 	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp6 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP6_MASK;
 	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp7 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP7_MASK;
 	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp8 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP8_MASK;
 	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp9 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP9_MASK;
 	nbio_v6_1_hdp_flush_reg.ref_and_mask_sdma0 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__SDMA0_MASK;
 	nbio_v6_1_hdp_flush_reg.ref_and_mask_sdma1 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__SDMA1_MASK;

 	nbio_v6_1_pcie_index_data.index_offset = SOC15_REG_OFFSET(NBIO, 0, mmPCIE_INDEX);
 	nbio_v6_1_pcie_index_data.data_offset = SOC15_REG_OFFSET(NBIO, 0, mmPCIE_DATA);

 	return 0;
 }

 void nbio_v6_1_detect_hw_virt(struct amdgpu_device *adev)
 {
 	uint32_t reg;

 	reg = RREG32_SOC15(NBIO, 0, mmRCC_PF_0_0_RCC_IOV_FUNC_IDENTIFIER);
 	if (reg & 1)
 		adev->virt.caps |= AMDGPU_SRIOV_CAPS_IS_VF;

 	if (reg & 0x80000000)
 		adev->virt.caps |= AMDGPU_SRIOV_CAPS_ENABLE_IOV;

 	if (!reg) {
 		if (is_virtual_machine())	/* passthrough mode exclus sriov mod */
 			adev->virt.caps |= AMDGPU_PASSTHROUGH_MODE;
 	}
 }

 void nbio_v6_1_init_registers(struct amdgpu_device *adev)
 {
 	uint32_t def, data;

 	def = data = RREG32_PCIE(smnPCIE_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(smnPCIE_CONFIG_CNTL, data);
 }
	/*
	* 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_v6_1.h"

	#include "vega10/soc15ip.h"
	#include "vega10/NBIO/nbio_6_1_default.h"
	#include "vega10/NBIO/nbio_6_1_offset.h"
	#include "vega10/NBIO/nbio_6_1_sh_mask.h"
	#include "vega10/vega10_enum.h"

	#define smnCPM_CONTROL 0x11180460
	#define smnPCIE_CNTL2 0x11180070
	#define smnPCIE_CONFIG_CNTL 0x11180044

	u32 nbio_v6_1_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;
	}

	u32 nbio_v6_1_get_atombios_scratch_regs(struct amdgpu_device *adev,
	uint32_t idx)
	{
	return RREG32_SOC15_OFFSET(NBIO, 0, mmBIOS_SCRATCH_0, idx);
	}

	void nbio_v6_1_set_atombios_scratch_regs(struct amdgpu_device *adev,
	uint32_t idx, uint32_t val)
	{
	WREG32_SOC15_OFFSET(NBIO, 0, mmBIOS_SCRATCH_0, idx, val);
	}

	void nbio_v6_1_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);
	}

	void nbio_v6_1_hdp_flush(struct amdgpu_device *adev)
	{
	WREG32_SOC15_NO_KIQ(NBIO, 0, mmBIF_BX_PF0_HDP_MEM_COHERENCY_FLUSH_CNTL, 0);
	}

	u32 nbio_v6_1_get_memsize(struct amdgpu_device *adev)
	{
	return RREG32_SOC15(NBIO, 0, mmRCC_PF_0_0_RCC_CONFIG_MEMSIZE);
	}

	static const u32 nbio_sdma_doorbell_range_reg[] =
	{
	SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA0_DOORBELL_RANGE),
	SOC15_REG_OFFSET(NBIO, 0, mmBIF_SDMA1_DOORBELL_RANGE)
	};

	void nbio_v6_1_sdma_doorbell_range(struct amdgpu_device *adev, int instance,
	bool use_doorbell, int doorbell_index)
	{
	u32 doorbell_range = RREG32(nbio_sdma_doorbell_range_reg[instance]);

	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, 2);
	} else
	doorbell_range = REG_SET_FIELD(doorbell_range, BIF_SDMA0_DOORBELL_RANGE, SIZE, 0);

	WREG32(nbio_sdma_doorbell_range_reg[instance], doorbell_range);
	}

	void nbio_v6_1_enable_doorbell_aperture(struct amdgpu_device *adev,
	bool enable)
	{
	WREG32_FIELD15(NBIO, 0, RCC_PF_0_0_RCC_DOORBELL_APER_EN, BIF_DOORBELL_APER_EN, enable ? 1 : 0);
	}

	void nbio_v6_1_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, mmBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_BASE_LOW,
	lower_32_bits(adev->doorbell.base));
	WREG32_SOC15(NBIO, 0, mmBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_BASE_HIGH,
	upper_32_bits(adev->doorbell.base));
	}

	WREG32_SOC15(NBIO, 0, mmBIF_BX_PF0_DOORBELL_SELFRING_GPA_APER_CNTL, tmp);
	}


	void nbio_v6_1_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);
	}

	void nbio_v6_1_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);
	}

	void nbio_v6_1_update_medium_grain_clock_gating(struct amdgpu_device *adev,
	bool enable)
	{
	uint32_t def, data;

	def = data = RREG32_PCIE(smnCPM_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_PERM_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_PERM_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(smnCPM_CONTROL, data);
	}

	void nbio_v6_1_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);
	}

	void nbio_v6_1_get_clockgating_state(struct amdgpu_device adev, u32 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;
	}

	struct nbio_hdp_flush_reg nbio_v6_1_hdp_flush_reg;
	struct nbio_pcie_index_data nbio_v6_1_pcie_index_data;

	int nbio_v6_1_init(struct amdgpu_device *adev)
	{
	nbio_v6_1_hdp_flush_reg.hdp_flush_req_offset = SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_GPU_HDP_FLUSH_REQ);
	nbio_v6_1_hdp_flush_reg.hdp_flush_done_offset = SOC15_REG_OFFSET(NBIO, 0, mmBIF_BX_PF0_GPU_HDP_FLUSH_DONE);
	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp0 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP0_MASK;
	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp1 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP1_MASK;
	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp2 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP2_MASK;
	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp3 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP3_MASK;
	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp4 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP4_MASK;
	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp5 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP5_MASK;
	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp6 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP6_MASK;
	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp7 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP7_MASK;
	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp8 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP8_MASK;
	nbio_v6_1_hdp_flush_reg.ref_and_mask_cp9 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__CP9_MASK;
	nbio_v6_1_hdp_flush_reg.ref_and_mask_sdma0 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__SDMA0_MASK;
	nbio_v6_1_hdp_flush_reg.ref_and_mask_sdma1 = BIF_BX_PF0_GPU_HDP_FLUSH_DONE__SDMA1_MASK;

	nbio_v6_1_pcie_index_data.index_offset = SOC15_REG_OFFSET(NBIO, 0, mmPCIE_INDEX);
	nbio_v6_1_pcie_index_data.data_offset = SOC15_REG_OFFSET(NBIO, 0, mmPCIE_DATA);

	return 0;
	}

	void nbio_v6_1_detect_hw_virt(struct amdgpu_device *adev)
	{
	uint32_t reg;

	reg = RREG32_SOC15(NBIO, 0, mmRCC_PF_0_0_RCC_IOV_FUNC_IDENTIFIER);
	if (reg & 1)
	adev->virt.caps \|= AMDGPU_SRIOV_CAPS_IS_VF;

	if (reg & 0x80000000)
	adev->virt.caps \|= AMDGPU_SRIOV_CAPS_ENABLE_IOV;

	if (!reg) {
	if (is_virtual_machine()) /* passthrough mode exclus sriov mod */
	adev->virt.caps \|= AMDGPU_PASSTHROUGH_MODE;
	}
	}

	void nbio_v6_1_init_registers(struct amdgpu_device *adev)
	{
	uint32_t def, data;

	def = data = RREG32_PCIE(smnPCIE_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(smnPCIE_CONFIG_CNTL, data);
	}