[PATCH] drm/amd/amdgpu: fixing read wrong pf2vf data in SRIOV

[Jingwen Chen]

[Why]
This fixes 35709bd76d229a51b0c571a768b741650ec47828.
we should read pf2vf data based at mman.fw_vram_usage_va after gmc
sw_init. patch 35709bd76 breaks this logic.

[How]
calling amdgpu_virt_exchange_data in amdgpu_virt_init_data_exchange to
set the right base in the right sequence.

v2:
call amdgpu_virt_init_data_exchange after gmc sw_init to make data
exchange workqueue run

Signed-off-by: Jingwen Chen <Jingwen.Chen2 at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |  2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c   | 10 +++-------
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index da3348fa7b0e..5610eae8ef0c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2353,7 +2353,7 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev)
 	}
 
 	if (amdgpu_sriov_vf(adev))
-		amdgpu_virt_exchange_data(adev);
+		amdgpu_virt_init_data_exchange(adev);
 
 	r = amdgpu_ib_pool_init(adev);
 	if (r) {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 894444ab0032..0b887a49b604 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -625,16 +625,12 @@ void amdgpu_virt_init_data_exchange(struct amdgpu_device *adev)
 	adev->virt.fw_reserve.p_vf2pf = NULL;
 	adev->virt.vf2pf_update_interval_ms = 0;
 
-	if (adev->bios != NULL) {
+	if (adev->mman.fw_vram_usage_va != NULL) {
 		adev->virt.vf2pf_update_interval_ms = 2000;
-
-		adev->virt.fw_reserve.p_pf2vf =
-			(struct amd_sriov_msg_pf2vf_info_header *)
-			(adev->bios + (AMD_SRIOV_MSG_PF2VF_OFFSET_KB << 10));
-
-		amdgpu_virt_read_pf2vf_data(adev);
 	}
 
+	amdgpu_virt_exchange_data(adev);
+
 	if (adev->virt.vf2pf_update_interval_ms != 0) {
 		INIT_DELAYED_WORK(&adev->virt.vf2pf_work, amdgpu_virt_update_vf2pf_work_item);
 		schedule_delayed_work(&(adev->virt.vf2pf_work), msecs_to_jiffies(adev->virt.vf2pf_update_interval_ms));
-- 
2.30.2