drm/amdgpu: do not use drm middle layer for debugfs

Use debugfs API directly instead of drm middle layer.

This also includes following debugfs file output changes:
1 amdgpu_evict_vram/amdgpu_evict_gtt output will not contain any braces.
  e.g. (0) --> 0
2 amdgpu_gpu_recover output will print return value of
  amdgpu_device_gpu_recover() instead of not so important "gpu recover"
  message.

v2: * checkpatch.pl: use '0444' instead of S_IRUGO.
    * remove S_IFREG from mode.
    * remove mode variable.

Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 19 insertions, 27 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index d56f4023ebb3..143a14f4866f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -36,8 +36,6 @@
 #include <linux/firmware.h>
 #include <linux/pm_runtime.h>
 
-#include <drm/drm_debugfs.h>
-
 #include "amdgpu.h"
 #include "amdgpu_trace.h"
 
@@ -697,11 +695,9 @@ static const struct dma_fence_ops amdgpu_fence_ops = {
  * Fence debugfs
  */
 #if defined(CONFIG_DEBUG_FS)
-static int amdgpu_debugfs_fence_info(struct seq_file *m, void *data)
+static int amdgpu_debugfs_fence_info_show(struct seq_file *m, void *unused)
 {
-	struct drm_info_node *node = (struct drm_info_node *)m->private;
-	struct drm_device *dev = node->minor->dev;
-	struct amdgpu_device *adev = drm_to_adev(dev);
+	struct amdgpu_device *adev = (struct amdgpu_device *)m->private;
 	int i;
 
 	for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
@@ -746,11 +742,10 @@ static int amdgpu_debugfs_fence_info(struct seq_file *m, void *data)
  *
  * Manually trigger a gpu reset at the next fence wait.
  */
-static int amdgpu_debugfs_gpu_recover(struct seq_file *m, void *data)
+static int gpu_recover_get(void *data, u64 *val)
 {
-	struct drm_info_node *node = (struct drm_info_node *) m->private;
-	struct drm_device *dev = node->minor->dev;
-	struct amdgpu_device *adev = drm_to_adev(dev);
+	struct amdgpu_device *adev = (struct amdgpu_device *)data;
+	struct drm_device *dev = adev_to_drm(adev);
 	int r;
 
 	r = pm_runtime_get_sync(dev->dev);
@@ -759,8 +754,7 @@ static int amdgpu_debugfs_gpu_recover(struct seq_file *m, void *data)
 		return 0;
 	}
 
-	seq_printf(m, "gpu recover\n");
-	amdgpu_device_gpu_recover(adev, NULL);
+	*val = amdgpu_device_gpu_recover(adev, NULL);
 
 	pm_runtime_mark_last_busy(dev->dev);
 	pm_runtime_put_autosuspend(dev->dev);
@@ -768,26 +762,24 @@ static int amdgpu_debugfs_gpu_recover(struct seq_file *m, void *data)
 	return 0;
 }
 
-static const struct drm_info_list amdgpu_debugfs_fence_list[] = {
-	{"amdgpu_fence_info", &amdgpu_debugfs_fence_info, 0, NULL},
-	{"amdgpu_gpu_recover", &amdgpu_debugfs_gpu_recover, 0, NULL}
-};
+DEFINE_SHOW_ATTRIBUTE(amdgpu_debugfs_fence_info);
+DEFINE_DEBUGFS_ATTRIBUTE(amdgpu_debugfs_gpu_recover_fops, gpu_recover_get, NULL,
+			 "%lld\n");
 
-static const struct drm_info_list amdgpu_debugfs_fence_list_sriov[] = {
-	{"amdgpu_fence_info", &amdgpu_debugfs_fence_info, 0, NULL},
-};
 #endif
 
-int amdgpu_debugfs_fence_init(struct amdgpu_device *adev)
+void amdgpu_debugfs_fence_init(struct amdgpu_device *adev)
 {
 #if defined(CONFIG_DEBUG_FS)
-	if (amdgpu_sriov_vf(adev))
-		return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_fence_list_sriov,
-						ARRAY_SIZE(amdgpu_debugfs_fence_list_sriov));
-	return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_fence_list,
-					ARRAY_SIZE(amdgpu_debugfs_fence_list));
-#else
-	return 0;
+	struct drm_minor *minor = adev_to_drm(adev)->primary;
+	struct dentry *root = minor->debugfs_root;
+
+	debugfs_create_file("amdgpu_fence_info", 0444, root, adev,
+			    &amdgpu_debugfs_fence_info_fops);
+
+	if (!amdgpu_sriov_vf(adev))
+		debugfs_create_file("amdgpu_gpu_recover", 0444, root, adev,
+				    &amdgpu_debugfs_gpu_recover_fops);
 #endif
 }