drm/amdgpu: Query correct register for DF hashing on Aldebaran

For Aldebaran, driver needs to query DramMegaBaseAddress to
check if DF hashing is enabled.

Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/df_v3_6.c b/drivers/gpu/drm/amd/amdgpu/df_v3_6.c
index 36ba229..14514a1 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/df_v3_6.c
+++ b/drivers/gpu/drm/amd/amdgpu/df_v3_6.c
@@ -277,13 +277,14 @@ static u32 df_v3_6_get_fb_channel_number(struct amdgpu_device *adev)
 {
        u32 tmp;
 
-       tmp = RREG32_SOC15(DF, 0, mmDF_CS_UMC_AON0_DramBaseAddress0);
-       if (adev->asic_type == CHIP_ALDEBARAN)
+       if (adev->asic_type == CHIP_ALDEBARAN) {
+               tmp = RREG32_SOC15(DF, 0, mmDF_GCM_AON0_DramMegaBaseAddress0);
                tmp &=
                ALDEBARAN_DF_CS_UMC_AON0_DramBaseAddress0__IntLvNumChan_MASK;
-       else
+       } else {
+               tmp = RREG32_SOC15(DF, 0, mmDF_CS_UMC_AON0_DramBaseAddress0);
                tmp &= DF_CS_UMC_AON0_DramBaseAddress0__IntLvNumChan_MASK;
-
+       }
        tmp >>= DF_CS_UMC_AON0_DramBaseAddress0__IntLvNumChan__SHIFT;
 
        return tmp;

diff --git a/drivers/gpu/drm/amd/include/asic_reg/df/df_3_6_offset.h b/drivers/gpu/drm/amd/include/asic_reg/df/df_3_6_offset.h
index bb2c9c7..bd37aa6 100644 (file)
--- a/drivers/gpu/drm/amd/include/asic_reg/df/df_3_6_offset.h
+++ b/drivers/gpu/drm/amd/include/asic_reg/df/df_3_6_offset.h
@@ -33,6 +33,9 @@
 #define mmDF_CS_UMC_AON0_DramBaseAddress0                                                              0x0044
 #define mmDF_CS_UMC_AON0_DramBaseAddress0_BASE_IDX                                                     0
 
+#define mmDF_GCM_AON0_DramMegaBaseAddress0                                                             0x0064
+#define mmDF_GCM_AON0_DramMegaBaseAddress0_BASE_IDX                                                    0
+
 #define smnPerfMonCtlLo0                                       0x01d440UL
 #define smnPerfMonCtlHi0                                       0x01d444UL
 #define smnPerfMonCtlLo1                                       0x01d450UL