drm/amdgpu: revert "XGMI pstate switch initial support"

This reverts commit 9b638f9751308ae3ae8f28e0c6e9decffd97f5f9.

Adding this to the mapping is complete nonsense and the whole
implementation looks racy. This patch wasn't thoughtfully reviewed
and should be reverted for now.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Liu, Shaoyun <Shaoyun.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

6 files changed, 1 insertions, 52 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index f88761af956a..6e71749cb3bb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -928,9 +928,6 @@ struct amdgpu_device {
 	int asic_reset_res;
 	struct work_struct		xgmi_reset_work;
 
-	/* counter of mapped memory through xgmi */
-	atomic_t			xgmi_map_counter;
-
 	bool                            in_baco_reset;
 };
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 042518482376..f4478e50da70 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2018,9 +2018,6 @@ static void amdgpu_device_ip_late_init_func_handler(struct work_struct *work)
 	r = amdgpu_device_enable_mgpu_fan_boost();
 	if (r)
 		DRM_ERROR("enable mgpu fan boost failed (%d).\n", r);
-
-	/*set to low pstate by default */
-	amdgpu_xgmi_set_pstate(adev, 0);
 }
 
 static void amdgpu_device_delay_enable_gfx_off(struct work_struct *work)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
index 6f176bbe4cf2..220a6a7b1bc1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -54,7 +54,6 @@ struct amdgpu_bo_va_mapping {
 	uint64_t			__subtree_last;
 	uint64_t			offset;
 	uint64_t			flags;
-	bool				is_xgmi;
 };
 
 /* User space allocated BO in a VM */
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index daa32f078b6d..317fe120d4a5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -34,7 +34,6 @@
 #include "amdgpu_trace.h"
 #include "amdgpu_amdkfd.h"
 #include "amdgpu_gmc.h"
-#include "amdgpu_xgmi.h"
 
 /**
  * DOC: GPUVM
@@ -1709,9 +1708,8 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev,
 	struct ttm_mem_reg *mem;
 	struct drm_mm_node *nodes;
 	struct dma_fence *exclusive, **last_update;
-	struct amdgpu_device *bo_adev = adev;
-	bool is_xgmi = false;
 	uint64_t flags;
+	struct amdgpu_device *bo_adev = adev;
 	int r;
 
 	if (clear || !bo) {
@@ -1733,10 +1731,6 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev,
 	if (bo) {
 		flags = amdgpu_ttm_tt_pte_flags(adev, bo->tbo.ttm, mem);
 		bo_adev = amdgpu_ttm_adev(bo->tbo.bdev);
-		if (adev != bo_adev &&
-		    adev->gmc.xgmi.hive_id &&
-		    adev->gmc.xgmi.hive_id == bo_adev->gmc.xgmi.hive_id)
-			is_xgmi = true;
 	} else {
 		flags = 0x0;
 	}
@@ -1755,19 +1749,6 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev,
 	}
 
 	list_for_each_entry(mapping, &bo_va->invalids, list) {
-		if (mapping->is_xgmi != is_xgmi) {
-			if (is_xgmi) {
-				/* Adding an XGMI mapping to the PT */
-				if (atomic_inc_return(&adev->xgmi_map_counter) == 1)
-					amdgpu_xgmi_set_pstate(adev, 1);
-			} else {
-				/* Removing an XGMI mapping from the PT */
-				if (atomic_dec_return(&adev->xgmi_map_counter) == 0)
-					amdgpu_xgmi_set_pstate(adev, 0);
-			}
-			mapping->is_xgmi = is_xgmi;
-		}
-
 		r = amdgpu_vm_bo_split_mapping(adev, exclusive, pages_addr, vm,
 					       mapping, flags, bo_adev, nodes,
 					       last_update);
@@ -1985,13 +1966,6 @@ int amdgpu_vm_clear_freed(struct amdgpu_device *adev,
 		r = amdgpu_vm_bo_update_mapping(adev, NULL, NULL, vm,
 						mapping->start, mapping->last,
 						init_pte_value, 0, &f);
-
-		if (mapping->is_xgmi) {
-			/* Removing an XGMI mapping from the PT */
-			if (atomic_dec_return(&adev->xgmi_map_counter) == 0)
-				amdgpu_xgmi_set_pstate(adev, 0);
-		}
-
 		amdgpu_vm_free_mapping(adev, vm, mapping, f);
 		if (r) {
 			dma_fence_put(f);
@@ -2188,7 +2162,6 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
 	mapping->last = eaddr;
 	mapping->offset = offset;
 	mapping->flags = flags;
-	mapping->is_xgmi = false;
 
 	amdgpu_vm_bo_insert_map(adev, bo_va, mapping);
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
index 807440d3edff..fcc4b05c745c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
@@ -200,7 +200,6 @@ struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev, int lo
 
 	if (lock)
 		mutex_lock(&tmp->hive_lock);
-	tmp->pstate = -1;
 
 	mutex_unlock(&xgmi_mutex);
 
@@ -322,17 +321,3 @@ void amdgpu_xgmi_remove_device(struct amdgpu_device *adev)
 		mutex_unlock(&hive->hive_lock);
 	}
 }
-
-int amdgpu_xgmi_set_pstate(struct amdgpu_device *adev, int pstate)
-{
-	int ret = 0;
-	struct amdgpu_hive_info *hive = amdgpu_get_xgmi_hive(adev, 0);
-
-	if (!hive)
-		return 0;
-
-	if (hive->pstate == pstate)
-		return 0;
-	/* Todo : sent the message to SMU for pstate change */
-	return ret;
-}
\ No newline at end of file
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
index 7e1710fcbef2..24a3b0362f98 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
@@ -33,13 +33,11 @@ struct amdgpu_hive_info {
 	struct kobject *kobj;
 	struct device_attribute dev_attr;
 	struct amdgpu_device *adev;
-	int pstate; /*0 -- low , 1 -- high , -1 unknown*/
 };
 
 struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev, int lock);
 int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_device *adev);
 int amdgpu_xgmi_add_device(struct amdgpu_device *adev);
 void amdgpu_xgmi_remove_device(struct amdgpu_device *adev);
-int amdgpu_xgmi_set_pstate(struct amdgpu_device *adev, int pstate);
 
 #endif