It is used to resume engine/IP block after soft reset.
Change-Id: I0904927d9214f3619c08607b24f77541422a9bce
Signed-off-by: Chunming Zhou <David1.Zhou at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 18 ++++++++++++++++++
drivers/gpu/drm/amd/include/amd_shared.h | 2 ++
2 files changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 4521725..16d78a9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2018,6 +2018,23 @@ static int amdgpu_soft_reset(struct amdgpu_device *adev)
return 0;
}
+static int amdgpu_post_soft_reset(struct amdgpu_device *adev)
+{
+ int i, r = 0;
+
+ for (i = 0; i < adev->num_ip_blocks; i++) {
+ if (!adev->ip_block_status[i].valid)
+ continue;
+ if (adev->ip_block_status[i].hang &&
+ adev->ip_blocks[i].funcs->post_soft_reset)
+ r = adev->ip_blocks[i].funcs->post_soft_reset(adev);
+ if (r)
+ return r;
+ }
+
+ return 0;
+}
+
/**
* amdgpu_gpu_reset - reset the asic
*
@@ -2060,6 +2077,7 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev)
if (!amdgpu_need_full_reset(adev)) {
amdgpu_pre_soft_reset(adev);
r = amdgpu_soft_reset(adev);
+ amdgpu_post_soft_reset(adev);
if (!amdgpu_check_soft_reset(adev))
goto out;
}
diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h
index 7104085..d938c2a 100644
--- a/drivers/gpu/drm/amd/include/amd_shared.h
+++ b/drivers/gpu/drm/amd/include/amd_shared.h
@@ -174,6 +174,8 @@ struct amd_ip_funcs {
int (*pre_soft_reset)(void *handle);
/* soft reset the IP block */
int (*soft_reset)(void *handle);
+ /* post soft reset the IP block */
+ int (*post_soft_reset)(void *handle);
/* enable/disable cg for the IP block */
int (*set_clockgating_state)(void *handle,
enum amd_clockgating_state state);
--
1.9.1
