drm/amdgpu: add pre_soft_reset ip func
It will be used before soft_reset to do some preparing work for reset.
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index fd7698a..b886205 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1955,6 +1955,23 @@
return asic_hang;
}
+int amdgpu_pre_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_blocks[i].funcs->pre_soft_reset) {
+ r = adev->ip_blocks[i].funcs->pre_soft_reset(adev);
+ if (r)
+ return r;
+ }
+ }
+
+ return 0;
+}
+
/**
* amdgpu_gpu_reset - reset the asic
*
diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h
index fe4aa09..2a2a5aa 100644
--- a/drivers/gpu/drm/amd/include/amd_shared.h
+++ b/drivers/gpu/drm/amd/include/amd_shared.h
@@ -161,6 +161,8 @@
int (*wait_for_idle)(void *handle);
/* check soft reset the IP block */
int (*check_soft_reset)(void *handle);
+ /* pre soft reset the IP block */
+ int (*pre_soft_reset)(void *handle);
/* soft reset the IP block */
int (*soft_reset)(void *handle);
/* enable/disable cg for the IP block */