Used for nbio registers that need to be initialized. Currently
only used for a golden setting that got missed on some boards.
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c | 13 +++++++++++++
drivers/gpu/drm/amd/amdgpu/nbio_v6_1.h | 1 +
2 files changed, 14 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c b/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c
index 61c0028..045988b 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.c
@@ -32,6 +32,7 @@
#define smnCPM_CONTROL 0x11180460
#define smnPCIE_CNTL2 0x11180070
+#define smnPCIE_CONFIG_CNTL 0x11180044
u32 nbio_v6_1_get_rev_id(struct amdgpu_device *adev)
{
@@ -256,3 +257,15 @@ void nbio_v6_1_detect_hw_virt(struct amdgpu_device *adev)
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);
+}
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.h b/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.h
index f6f8bc0..686e4b4 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.h
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v6_1.h
@@ -50,5 +50,6 @@ void nbio_v6_1_update_medium_grain_clock_gating(struct amdgpu_device *adev, bool
void nbio_v6_1_update_medium_grain_light_sleep(struct amdgpu_device *adev, bool enable);
void nbio_v6_1_get_clockgating_state(struct amdgpu_device *adev, u32 *flags);
void nbio_v6_1_detect_hw_virt(struct amdgpu_device *adev);
+void nbio_v6_1_init_registers(struct amdgpu_device *adev);
#endif
--
2.5.5
