[PATCH 3/4] drm/amdgpu: indirect register access for nv12 sriov

[Peng Ju Zhou]

using the control bits got from host to control registers access.

Signed-off-by: Peng Ju Zhou <PengJu.Zhou at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c |  2 ++
 drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h | 17 +++++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index b62f134d6dd5..0c9c5255aa42 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -466,6 +466,8 @@ static int amdgpu_virt_read_pf2vf_data(struct amdgpu_device *adev)
 			((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->vf2pf_update_interval_ms;
 		adev->virt.gim_feature =
 			((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->feature_flags.all;
+		adev->virt.reg_access =
+			((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->reg_access_flags.all;
 
 		break;
 	default:
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
index 3580a746ad9a..383d4bdc3fb5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
@@ -228,6 +228,7 @@ struct amdgpu_virt {
 	bool tdr_debug;
 	struct amdgpu_virt_ras_err_handler_data *virt_eh_data;
 	bool ras_init_done;
+	uint32_t reg_access;
 
 	/* vf2pf message */
 	struct delayed_work vf2pf_work;
@@ -249,6 +250,22 @@ struct amdgpu_virt {
 #define amdgpu_sriov_fullaccess(adev) \
 (amdgpu_sriov_vf((adev)) && !amdgpu_sriov_runtime((adev)))
 
+#define amdgpu_sriov_reg_indirect_en(adev) \
+(amdgpu_sriov_vf((adev)) && \
+	((adev)->virt.gim_feature & (AMDGIM_FEATURE_INDIRECT_REG_ACCESS)))
+
+#define amdgpu_sriov_reg_indirect_ih(adev) \
+(amdgpu_sriov_vf((adev)) && \
+	((adev)->virt.reg_access & (AMDGIM_FEATURE_IH_REG_PSP_EN)))
+
+#define amdgpu_sriov_reg_indirect_mmhub(adev) \
+(amdgpu_sriov_vf((adev)) && \
+	((adev)->virt.reg_access & (AMDGIM_FEATURE_MMHUB_REG_RLC_EN)))
+
+#define amdgpu_sriov_reg_indirect_gc(adev) \
+(amdgpu_sriov_vf((adev)) && \
+	((adev)->virt.reg_access & (AMDGIM_FEATURE_GC_REG_RLC_EN)))
+
 #define amdgpu_passthrough(adev) \
 ((adev)->virt.caps & AMDGPU_PASSTHROUGH_MODE)
 
-- 
2.17.1