the root cause is vram content is lost completely after pci reset.
Change-Id: I012cea984702894410b0f05149fd017bb62b624c
Signed-off-by: Chunming Zhou <david1.z...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 57 ++++++++++++++++++++++++++----
1 file changed, 50 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 8a75327..b44ecdb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1787,13 +1787,40 @@ static int amdgpu_sriov_reinit_late(struct
amdgpu_device *adev)
return 0;
}
-static int amdgpu_resume(struct amdgpu_device *adev)
+static int amdgpu_resume_phase1(struct amdgpu_device *adev)
{
int i, r;
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.valid)
continue;
+ if (adev->ip_blocks[i].version->type ==
AMD_IP_BLOCK_TYPE_COMMON ||
+ adev->ip_blocks[i].version->type ==
AMD_IP_BLOCK_TYPE_GMC ||
+ adev->ip_blocks[i].version->type ==
+ AMD_IP_BLOCK_TYPE_IH) {
+ r = adev->ip_blocks[i].version->funcs->resume(adev);
+ if (r) {
+ DRM_ERROR("resume of IP block <%s> failed %d\n",
+
adev->ip_blocks[i].version->funcs->name, r);
+ return r;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int amdgpu_resume_phase2(struct amdgpu_device *adev)
+{
+ int i, r;
+
+ for (i = 0; i < adev->num_ip_blocks; i++) {
+ if (!adev->ip_blocks[i].status.valid)
+ continue;
+ if (adev->ip_blocks[i].version->type ==
AMD_IP_BLOCK_TYPE_COMMON ||
+ adev->ip_blocks[i].version->type ==
AMD_IP_BLOCK_TYPE_GMC ||
+ adev->ip_blocks[i].version->type ==
AMD_IP_BLOCK_TYPE_IH )
+ continue;
r = adev->ip_blocks[i].version->funcs->resume(adev);
if (r) {
DRM_ERROR("resume of IP block <%s> failed %d\n",
@@ -1805,6 +1832,18 @@ static int amdgpu_resume(struct amdgpu_device *adev)
return 0;
}
+static int amdgpu_resume(struct amdgpu_device *adev)
+{
+ int r;
+
+ r = amdgpu_resume_phase1(adev);
+ if (r)
+ return r;
+ r = amdgpu_resume_phase2(adev);
+
+ return r;
+}
+
static void amdgpu_device_detect_sriov_bios(struct amdgpu_device *adev)
{
if (adev->is_atom_fw) {
@@ -2730,16 +2769,20 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev)
if (!r) {
dev_info(adev->dev, "GPU reset succeeded, trying to
resume\n");
- r = amdgpu_resume(adev);
+ r = amdgpu_resume_phase1(adev);
+ if (r)
+ goto out;
+ r = amdgpu_ttm_recover_gart(adev);
+ if (r)
+ goto out;
+ r = amdgpu_resume_phase2(adev);
+ if (r)
+ goto out;
}
}
+out:
if (!r) {
amdgpu_irq_gpu_reset_resume_helper(adev);
- if (need_full_reset && amdgpu_need_backup(adev)) {
- r = amdgpu_ttm_recover_gart(adev);
- if (r)
- DRM_ERROR("gart recovery failed!!!\n");
- }
r = amdgpu_ib_ring_tests(adev);
if (r) {
dev_err(adev->dev, "ib ring test failed (%d).\n", r);
--
1.9.1
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