From ea1e78c1c2ba7a925f4398f3fc3d90535b369179 Mon Sep 17 00:00:00 2001
From: Wenhui Sheng <Wenhui.Sheng@amd.com>
Date: Tue, 23 Jun 2020 13:43:49 +0800
Subject: drm/amdgpu: invoke req full access early enough
Git-commit: 00a979f3d69e0c275e88c741b854dbe0d5238ae0
Patch-mainline: v5.9-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322

From SIENNA_CICHLID, HW introduce a new protection
feature which can control the FB, doorbell and MMIO
write access for VF, so guest driver should request
full access before ip discovery, or we couldn't access
ip discovery data in FB.

Signed-off-by: Wenhui Sheng <Wenhui.Sheng@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 54 +++++++++-------------
 1 file changed, 23 insertions(+), 31 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index a649e40fd96f..2934e3db4703 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1722,6 +1722,29 @@ static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
 
 	amdgpu_device_enable_virtual_display(adev);
 
+	if (amdgpu_sriov_vf(adev)) {
+		/* handle vbios stuff prior full access mode for new handshake */
+		if (adev->virt.req_init_data_ver == 1) {
+			if (!amdgpu_get_bios(adev)) {
+				DRM_ERROR("failed to get vbios\n");
+				return -EINVAL;
+			}
+
+			r = amdgpu_atombios_init(adev);
+			if (r) {
+				dev_err(adev->dev, "amdgpu_atombios_init failed\n");
+				amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_INIT_FAIL, 0, 0);
+				return r;
+			}
+		}
+
+		r = amdgpu_virt_request_full_gpu(adev, true);
+		if (r) {
+			amdgpu_atombios_fini(adev);
+			return r;
+		}
+	}
+
 	switch (adev->asic_type) {
 #ifdef CONFIG_DRM_AMDGPU_SI
 	case CHIP_VERDE:
@@ -1801,31 +1824,6 @@ static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
 
 	amdgpu_amdkfd_device_probe(adev);
 
-	if (amdgpu_sriov_vf(adev)) {
-		/* handle vbios stuff prior full access mode for new handshake */
-		if (adev->virt.req_init_data_ver == 1) {
-			if (!amdgpu_get_bios(adev)) {
-				DRM_ERROR("failed to get vbios\n");
-				return -EINVAL;
-			}
-
-			r = amdgpu_atombios_init(adev);
-			if (r) {
-				dev_err(adev->dev, "amdgpu_atombios_init failed\n");
-				amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_INIT_FAIL, 0, 0);
-				return r;
-			}
-		}
-	}
-
-	/* we need to send REQ_GPU here for legacy handshaker otherwise the vbios
-	 * will not be prepared by host for this VF */
-	if (amdgpu_sriov_vf(adev) && adev->virt.req_init_data_ver < 1) {
-		r = amdgpu_virt_request_full_gpu(adev, true);
-		if (r)
-			return r;
-	}
-
 	adev->pm.pp_feature = amdgpu_pp_feature_mask;
 	if (amdgpu_sriov_vf(adev) || sched_policy == KFD_SCHED_POLICY_NO_HWS)
 		adev->pm.pp_feature &= ~PP_GFXOFF_MASK;
@@ -1987,12 +1985,6 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev)
 	if (r)
 		return r;
 
-	if (amdgpu_sriov_vf(adev) && adev->virt.req_init_data_ver > 0) {
-		r = amdgpu_virt_request_full_gpu(adev, true);
-		if (r)
-			return -EAGAIN;
-	}
-
 	for (i = 0; i < adev->num_ip_blocks; i++) {
 		if (!adev->ip_blocks[i].status.valid)
 			continue;
-- 
2.29.2