drm/amdgpu: Expose hive adev list and xgmi_mutex

It's needed for device reset of entire hive.

v3:
Add per hive lock to allow avoiding duplicate resets triggered by
multiple members  of same hive.
Expose amdgpu_hive_info instead of adding getter functions.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 8 insertions, 8 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
index 59e667a8f01b..fb37e69f1bba 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
@@ -23,7 +23,6 @@
  */
 #include <linux/list.h>
 #include "amdgpu.h"
-#include "amdgpu_psp.h"
 #include "amdgpu_xgmi.h"
 
 
@@ -32,16 +31,15 @@ static DEFINE_MUTEX(xgmi_mutex);
 #define AMDGPU_MAX_XGMI_HIVE                    8
 #define AMDGPU_MAX_XGMI_DEVICE_PER_HIVE         4
 
-struct amdgpu_hive_info {
-        uint64_t                hive_id;
-        struct list_head        device_list;
-        struct psp_xgmi_topology_info   topology_info;
-        int number_devices;
-};
-
 static struct amdgpu_hive_info xgmi_hives[AMDGPU_MAX_XGMI_HIVE];
 static unsigned hive_count = 0;
 
+
+void *amdgpu_xgmi_hive_try_lock(struct amdgpu_hive_info *hive)
+{
+        return &hive->device_list;
+}
+
 struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev)
 {
         int i;
@@ -61,6 +59,8 @@ struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev)
         tmp = &xgmi_hives[hive_count++];
         tmp->hive_id = adev->gmc.xgmi.hive_id;
         INIT_LIST_HEAD(&tmp->device_list);
+        mutex_init(&tmp->hive_lock);
+
         return tmp;
 }