drm/amdgpu: add nbio v4_3_0 ip block v2

This adds nbio v4_3_0 ip block support

Changed from v1:
use WREG32_SOC15/RREG32_SOC15 instead of
WREG32_PCIE/RREG32_PCIE
remove the programming of PCIE_CONFIG_CNTL

Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

4 files changed, 403 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile
index 2b454e7d7a76..313af306687b 100644
--- a/drivers/gpu/drm/amd/amdgpu/Makefile
+++ b/drivers/gpu/drm/amd/amdgpu/Makefile
@@ -74,7 +74,8 @@ amdgpu-$(CONFIG_DRM_AMDGPU_SI)+= si.o gmc_v6_0.o gfx_v6_0.o si_ih.o si_dma.o dce
 amdgpu-y += \
 	vi.o mxgpu_vi.o nbio_v6_1.o soc15.o emu_soc.o mxgpu_ai.o nbio_v7_0.o vega10_reg_init.o \
 	vega20_reg_init.o nbio_v7_4.o nbio_v2_3.o nv.o arct_reg_init.o mxgpu_nv.o \
-	nbio_v7_2.o hdp_v4_0.o hdp_v5_0.o aldebaran_reg_init.o aldebaran.o soc21.o
+	nbio_v7_2.o hdp_v4_0.o hdp_v5_0.o aldebaran_reg_init.o aldebaran.o soc21.o \
+	nbio_v4_3.o
 
 # add DF block
 amdgpu-y += \
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h
index ccd9fe96fab7..a240336bbc6b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h
@@ -70,6 +70,7 @@ struct amdgpu_nbio_funcs {
 			bool use_doorbell, int doorbell_index, int doorbell_size);
 	void (*vcn_doorbell_range)(struct amdgpu_device *adev, bool use_doorbell,
 				   int doorbell_index, int instance);
+	void (*gc_doorbell_init)(struct amdgpu_device *adev);
 	void (*enable_doorbell_aperture)(struct amdgpu_device *adev,
 					 bool enable);
 	void (*enable_doorbell_selfring_aperture)(struct amdgpu_device *adev,
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v4_3.c b/drivers/gpu/drm/amd/amdgpu/nbio_v4_3.c
new file mode 100644
index 000000000000..ed31d133f07a
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v4_3.c
@@ -0,0 +1,368 @@
+/*
+ * Copyright 2021 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_v4_3.h"
+
+#include "nbio/nbio_4_3_0_offset.h"
+#include "nbio/nbio_4_3_0_sh_mask.h"
+#include <uapi/linux/kfd_ioctl.h>
+
+static void nbio_v4_3_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_v4_3_get_rev_id(struct amdgpu_device *adev)
+{
+	u32 tmp = RREG32_SOC15(NBIO, 0, regRCC_STRAP0_RCC_DEV0_EPF0_STRAP0);
+
+	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_v4_3_mc_access_enable(struct amdgpu_device *adev, bool enable)
+{
+	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);
+}
+
+static u32 nbio_v4_3_get_memsize(struct amdgpu_device *adev)
+{
+	return RREG32_SOC15(NBIO, 0, regRCC_DEV0_EPF0_RCC_CONFIG_MEMSIZE);
+}
+
+static void nbio_v4_3_sdma_doorbell_range(struct amdgpu_device *adev, int instance,
+					  bool use_doorbell, int doorbell_index,
+					  int doorbell_size)
+{
+	if (instance == 0) {
+		u32 doorbell_range = RREG32_SOC15(NBIO, 0, regS2A_DOORBELL_ENTRY_2_CTRL);
+
+		if (use_doorbell) {
+			doorbell_range = REG_SET_FIELD(doorbell_range,
+						       S2A_DOORBELL_ENTRY_2_CTRL,
+						       S2A_DOORBELL_PORT2_ENABLE,
+						       0x1);
+			doorbell_range = REG_SET_FIELD(doorbell_range,
+						       S2A_DOORBELL_ENTRY_2_CTRL,
+						       S2A_DOORBELL_PORT2_AWID,
+						       0xe);
+			doorbell_range = REG_SET_FIELD(doorbell_range,
+						       S2A_DOORBELL_ENTRY_2_CTRL,
+						       S2A_DOORBELL_PORT2_RANGE_OFFSET,
+						       doorbell_index);
+			doorbell_range = REG_SET_FIELD(doorbell_range,
+						       S2A_DOORBELL_ENTRY_2_CTRL,
+						       S2A_DOORBELL_PORT2_RANGE_SIZE,
+						       doorbell_size);
+			doorbell_range = REG_SET_FIELD(doorbell_range,
+						       S2A_DOORBELL_ENTRY_2_CTRL,
+						       S2A_DOORBELL_PORT2_AWADDR_31_28_VALUE,
+						       0x3);
+		} else
+			doorbell_range = REG_SET_FIELD(doorbell_range,
+						       S2A_DOORBELL_ENTRY_2_CTRL,
+						       S2A_DOORBELL_PORT2_RANGE_SIZE,
+						       0);
+
+		WREG32_SOC15(NBIO, 0, regS2A_DOORBELL_ENTRY_2_CTRL, doorbell_range);
+	}
+}
+
+static void nbio_v4_3_vcn_doorbell_range(struct amdgpu_device *adev, bool use_doorbell,
+					 int doorbell_index, int instance)
+{
+	u32 doorbell_range;
+
+	if (instance)
+		doorbell_range = RREG32_SOC15(NBIO, 0, regS2A_DOORBELL_ENTRY_5_CTRL);
+	else
+		doorbell_range = RREG32_SOC15(NBIO, 0, regS2A_DOORBELL_ENTRY_4_CTRL);
+
+	if (use_doorbell) {
+		doorbell_range = REG_SET_FIELD(doorbell_range,
+					       S2A_DOORBELL_ENTRY_4_CTRL,
+					       S2A_DOORBELL_PORT4_ENABLE,
+					       0x1);
+		doorbell_range = REG_SET_FIELD(doorbell_range,
+					       S2A_DOORBELL_ENTRY_4_CTRL,
+					       S2A_DOORBELL_PORT4_AWID,
+					       instance ? 0x7 : 0x4);
+		doorbell_range = REG_SET_FIELD(doorbell_range,
+					       S2A_DOORBELL_ENTRY_4_CTRL,
+					       S2A_DOORBELL_PORT4_RANGE_OFFSET,
+					       doorbell_index);
+		doorbell_range = REG_SET_FIELD(doorbell_range,
+					       S2A_DOORBELL_ENTRY_4_CTRL,
+					       S2A_DOORBELL_PORT4_RANGE_SIZE,
+					       8);
+		doorbell_range = REG_SET_FIELD(doorbell_range,
+					       S2A_DOORBELL_ENTRY_4_CTRL,
+					       S2A_DOORBELL_PORT4_AWADDR_31_28_VALUE,
+					       instance ? 0x7 : 0x4);
+	} else
+		doorbell_range = REG_SET_FIELD(doorbell_range,
+					       S2A_DOORBELL_ENTRY_4_CTRL,
+					       S2A_DOORBELL_PORT4_RANGE_SIZE,
+					       0);
+
+	if (instance)
+		WREG32_SOC15(NBIO, 0, regS2A_DOORBELL_ENTRY_5_CTRL, doorbell_range);
+	else
+		WREG32_SOC15(NBIO, 0, regS2A_DOORBELL_ENTRY_4_CTRL, doorbell_range);
+}
+
+static void nbio_v4_3_gc_doorbell_init(struct amdgpu_device *adev)
+{
+	WREG32_SOC15(NBIO, 0, regS2A_DOORBELL_ENTRY_0_CTRL, 0x30000007);
+	WREG32_SOC15(NBIO, 0, regS2A_DOORBELL_ENTRY_3_CTRL, 0x3000000d);
+}
+
+static void nbio_v4_3_enable_doorbell_aperture(struct amdgpu_device *adev,
+					       bool enable)
+{
+	WREG32_FIELD15_PREREG(NBIO, 0, RCC_DEV0_EPF0_RCC_DOORBELL_APER_EN,
+			BIF_DOORBELL_APER_EN, enable ? 1 : 0);
+}
+
+static void nbio_v4_3_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_v4_3_ih_doorbell_range(struct amdgpu_device *adev,
+					bool use_doorbell, int doorbell_index)
+{
+	u32 ih_doorbell_range = RREG32_SOC15(NBIO, 0, regS2A_DOORBELL_ENTRY_1_CTRL);
+
+	if (use_doorbell) {
+		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
+						  S2A_DOORBELL_ENTRY_1_CTRL,
+						  S2A_DOORBELL_PORT1_ENABLE,
+						  0x1);
+		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
+						  S2A_DOORBELL_ENTRY_1_CTRL,
+						  S2A_DOORBELL_PORT1_AWID,
+						  0x0);
+		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
+						  S2A_DOORBELL_ENTRY_1_CTRL,
+						  S2A_DOORBELL_PORT1_RANGE_OFFSET,
+						  doorbell_index);
+		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
+						  S2A_DOORBELL_ENTRY_1_CTRL,
+						  S2A_DOORBELL_PORT1_RANGE_SIZE,
+						  2);
+		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
+						  S2A_DOORBELL_ENTRY_1_CTRL,
+						  S2A_DOORBELL_PORT1_AWADDR_31_28_VALUE,
+						  0x0);
+	} else
+		ih_doorbell_range = REG_SET_FIELD(ih_doorbell_range,
+						  S2A_DOORBELL_ENTRY_1_CTRL,
+						  S2A_DOORBELL_PORT1_RANGE_SIZE,
+						  0);
+
+	WREG32_SOC15(NBIO, 0, regS2A_DOORBELL_ENTRY_1_CTRL, ih_doorbell_range);
+}
+
+static void nbio_v4_3_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);
+	/*
+	 * BIF_BX0_INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=0 - dummy read disabled with msi, enabled without msi
+	 * BIF_BX0_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);
+
+	/* BIF_BX0_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_v4_3_update_medium_grain_clock_gating(struct amdgpu_device *adev,
+						       bool enable)
+{
+	uint32_t def, data;
+
+	def = data = RREG32_SOC15(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_SOC15(NBIO, 0, regCPM_CONTROL, data);
+}
+
+static void nbio_v4_3_update_medium_grain_light_sleep(struct amdgpu_device *adev,
+						      bool enable)
+{
+	uint32_t def, data;
+
+	/* TODO: need update in future */
+	def = data = RREG32_SOC15(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_SOC15(NBIO, 0, regPCIE_CNTL2, data);
+}
+
+static void nbio_v4_3_get_clockgating_state(struct amdgpu_device *adev,
+					    u64 *flags)
+{
+	int data;
+
+	/* AMD_CG_SUPPORT_BIF_MGCG */
+	data = RREG32_SOC15(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_SOC15(NBIO, 0, regPCIE_CNTL2);
+	if (data & PCIE_CNTL2__SLV_MEM_LS_EN_MASK)
+		*flags |= AMD_CG_SUPPORT_BIF_LS;
+}
+
+static u32 nbio_v4_3_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_v4_3_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_v4_3_get_pcie_index_offset(struct amdgpu_device *adev)
+{
+	return SOC15_REG_OFFSET(NBIO, 0, regBIF_BX_PF0_RSMU_INDEX);
+}
+
+static u32 nbio_v4_3_get_pcie_data_offset(struct amdgpu_device *adev)
+{
+	return SOC15_REG_OFFSET(NBIO, 0, regBIF_BX_PF0_RSMU_DATA);
+}
+
+const struct nbio_hdp_flush_reg nbio_v4_3_hdp_flush_reg = {
+	.ref_and_mask_cp0 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP0_MASK,
+	.ref_and_mask_cp1 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP1_MASK,
+	.ref_and_mask_cp2 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP2_MASK,
+	.ref_and_mask_cp3 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP3_MASK,
+	.ref_and_mask_cp4 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP4_MASK,
+	.ref_and_mask_cp5 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP5_MASK,
+	.ref_and_mask_cp6 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP6_MASK,
+	.ref_and_mask_cp7 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP7_MASK,
+	.ref_and_mask_cp8 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP8_MASK,
+	.ref_and_mask_cp9 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__CP9_MASK,
+	.ref_and_mask_sdma0 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__SDMA0_MASK,
+	.ref_and_mask_sdma1 = BIF_BX_PF_GPU_HDP_FLUSH_DONE__SDMA1_MASK,
+};
+
+static void nbio_v4_3_init_registers(struct amdgpu_device *adev)
+{
+	return;
+}
+
+static u32 nbio_v4_3_get_rom_offset(struct amdgpu_device *adev)
+{
+	u32 data, rom_offset;
+
+	data = RREG32_SOC15(NBIO, 0, regREGS_ROM_OFFSET_CTRL);
+	rom_offset = REG_GET_FIELD(data, REGS_ROM_OFFSET_CTRL, ROM_OFFSET);
+
+	return rom_offset;
+}
+
+const struct amdgpu_nbio_funcs nbio_v4_3_funcs = {
+	.get_hdp_flush_req_offset = nbio_v4_3_get_hdp_flush_req_offset,
+	.get_hdp_flush_done_offset = nbio_v4_3_get_hdp_flush_done_offset,
+	.get_pcie_index_offset = nbio_v4_3_get_pcie_index_offset,
+	.get_pcie_data_offset = nbio_v4_3_get_pcie_data_offset,
+	.get_rev_id = nbio_v4_3_get_rev_id,
+	.mc_access_enable = nbio_v4_3_mc_access_enable,
+	.get_memsize = nbio_v4_3_get_memsize,
+	.sdma_doorbell_range = nbio_v4_3_sdma_doorbell_range,
+	.vcn_doorbell_range = nbio_v4_3_vcn_doorbell_range,
+	.gc_doorbell_init = nbio_v4_3_gc_doorbell_init,
+	.enable_doorbell_aperture = nbio_v4_3_enable_doorbell_aperture,
+	.enable_doorbell_selfring_aperture = nbio_v4_3_enable_doorbell_selfring_aperture,
+	.ih_doorbell_range = nbio_v4_3_ih_doorbell_range,
+	.update_medium_grain_clock_gating = nbio_v4_3_update_medium_grain_clock_gating,
+	.update_medium_grain_light_sleep = nbio_v4_3_update_medium_grain_light_sleep,
+	.get_clockgating_state = nbio_v4_3_get_clockgating_state,
+	.ih_control = nbio_v4_3_ih_control,
+	.init_registers = nbio_v4_3_init_registers,
+	.remap_hdp_registers = nbio_v4_3_remap_hdp_registers,
+	.get_rom_offset = nbio_v4_3_get_rom_offset,
+};
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v4_3.h b/drivers/gpu/drm/amd/amdgpu/nbio_v4_3.h
new file mode 100644
index 000000000000..ade43661d7a9
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v4_3.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2021 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.
+ *
+ */
+
+#ifndef __NBIO_V4_3_H__
+#define __NBIO_V4_3_H__
+
+#include "soc15_common.h"
+
+extern const struct nbio_hdp_flush_reg nbio_v4_3_hdp_flush_reg;
+extern const struct amdgpu_nbio_funcs nbio_v4_3_funcs;
+
+#endif