---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 6 ++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 16 +++++++++++++++-
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 4 ++++
drivers/gpu/drm/amd/amdgpu/amdgpu_ioc32.c | 7 ++++++-
4 files changed, 31 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 71364f5..ab0ffa8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1526,6 +1526,7 @@ struct amdgpu_device {
atomic64_t num_bytes_moved;
atomic64_t num_evictions;
atomic_t gpu_reset_counter;
+ atomic_t gpu_reset_state;
/* data for buffer migration throttling */
struct {
@@ -1851,6 +1852,11 @@ amdgpu_get_sdma_instance(struct amdgpu_ring *ring)
#define amdgpu_psp_check_fw_loading_status(adev, i)
(adev)->firmware.funcs->check_fw_loading_status((adev), (i))
/* Common functions */
+static inline int amdgpu_device_is_reset(struct amdgpu_device *adev)
+{
+ return atomic_read(&adev->gpu_reset_state);
+}
+
int amdgpu_gpu_reset(struct amdgpu_device *adev);
bool amdgpu_need_backup(struct amdgpu_device *adev);
void amdgpu_pci_config_reset(struct amdgpu_device *adev); diff --git
a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index f882496..0fb4716 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1894,6 +1894,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
mutex_init(&adev->grbm_idx_mutex);
mutex_init(&adev->mn_lock);
hash_init(adev->mn_hash);
+ atomic_set(&adev->gpu_reset_state, 0);
amdgpu_check_arguments(adev);
@@ -2655,6 +2656,18 @@ int amdgpu_sriov_gpu_reset(struct amdgpu_device *adev, bool voluntary)
}
/**
+ * amdgpu_device_set_reset_state - set gpu reset state
+ *
+ * @adev: amdgpu device pointer
+ * @state: true when start to reset gpu; false: reset done */ static
+inline void amdgpu_device_set_reset_state(struct amdgpu_device *adev,
+ bool state)
+{
+ atomic_set(&adev->gpu_reset_state, state); }
+
+/**
* amdgpu_gpu_reset - reset the asic
*
* @adev: amdgpu device pointer
@@ -2678,7 +2691,7 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev)
}
atomic_inc(&adev->gpu_reset_counter);
-
+ amdgpu_device_set_reset_state(adev, true);
/* block TTM */
resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev);
/* store modesetting */
@@ -2811,6 +2824,7 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev)
dev_info(adev->dev, "GPU reset failed\n");
}
+ amdgpu_device_set_reset_state(adev, false);
return r;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index ead00d7..8cc14af 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -679,11 +679,15 @@ long amdgpu_drm_ioctl(struct file *filp,
struct drm_file *file_priv = filp->private_data;
struct drm_device *dev;
long ret;
+
dev = file_priv->minor->dev;
ret = pm_runtime_get_sync(dev->dev);
if (ret < 0)
return ret;
+ while (amdgpu_device_is_reset(dev->dev_private))
+ msleep(100);
+
ret = drm_ioctl(filp, cmd, arg);
pm_runtime_mark_last_busy(dev->dev);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ioc32.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ioc32.c
index 2648291..22b8059 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ioc32.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ioc32.c
@@ -36,10 +36,15 @@
long amdgpu_kms_compat_ioctl(struct file *filp, unsigned int cmd, unsigned
long arg)
{
unsigned int nr = DRM_IOCTL_NR(cmd);
+ struct drm_file *file_priv = filp->private_data;
+ struct amdgpu_device *adev = file_priv->minor->dev->dev_private;
int ret;
- if (nr < DRM_COMMAND_BASE)
+ if (nr < DRM_COMMAND_BASE) {
+ while (amdgpu_device_is_reset(adev))
+ msleep(100);
return drm_compat_ioctl(filp, cmd, arg);
+ }
ret = amdgpu_drm_ioctl(filp, cmd, arg);
