drm/amdgpu: Use another offset for GC 9.4.3 remap

[ Upstream commit ed6e4f0a27ebafffbd12bf3878ab004787685d8a ]

The legacy region at 0x7F000 maps to valid registers in GC 9.4.3 SOCs.
Use 0x1A000 offset instead as MMIO register remap region.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index 28094cd..9abfe4c 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -1160,6 +1160,11 @@ static int soc15_common_early_init(void *handle)
                        AMD_PG_SUPPORT_VCN_DPG |
                        AMD_PG_SUPPORT_JPEG;
                adev->external_rev_id = adev->rev_id + 0x46;
+               /* GC 9.4.3 uses MMIO register region hole at a different offset */
+               if (!amdgpu_sriov_vf(adev)) {
+                       adev->rmmio_remap.reg_offset = 0x1A000;
+                       adev->rmmio_remap.bus_addr = adev->rmmio_base + 0x1A000;
+               }
                break;
        default:
                /* FIXME: not supported yet */