[PATCH 4/7] drm/amdgpu: add HDP remap functionality to nbio 7.7

[Alex Deucher]

Was missing before and would have resulted in a write to
a non-existant register. Normally APUs don't use HDP, but
other asics could use this code and APUs do use the HDP
when used in passthrough.

Reviewed-by: Lijo Lazar <lijo.lazar at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/nbio_v7_7.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_7.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_7.c
index f30bc826a878..def89379b51a 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_7.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_7.c
@@ -28,6 +28,14 @@
 #include "nbio/nbio_7_7_0_sh_mask.h"
 #include <uapi/linux/kfd_ioctl.h>
 
+static void nbio_v7_7_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_7_get_rev_id(struct amdgpu_device *adev)
 {
 	u32 tmp;
@@ -336,4 +344,5 @@ const struct amdgpu_nbio_funcs nbio_v7_7_funcs = {
 	.get_clockgating_state = nbio_v7_7_get_clockgating_state,
 	.ih_control = nbio_v7_7_ih_control,
 	.init_registers = nbio_v7_7_init_registers,
+	.remap_hdp_registers = nbio_v7_7_remap_hdp_registers,
 };
-- 
2.37.2