[PATCH] drm/amdkfd: disable SVM for GC 10.1.3/4

[Lang Yu <Lang.Yu@amd.com>]

GC 10.1.3/4 have problems with TLB_FLUSH_HEAVYWEIGHT
which is used by SVM in svm_range_unmap_from_gpus().
This causes problems on GC 10.1.3/4.

Signed-off-by: Lang Yu <Lang.Yu@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
index 7d82c7da223a..dd3db3d88d59 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
@@ -992,6 +992,22 @@ static const struct dev_pagemap_ops svm_migrate_pgmap_ops = {
 /* Each VRAM page uses sizeof(struct page) on system memory */
 #define SVM_HMM_PAGE_STRUCT_SIZE(size) ((size)/PAGE_SIZE * sizeof(struct page))
 
+static inline bool is_zone_device_needed(struct amdgpu_device *adev)
+{
+	/* Page migration works on gfx9 or newer */
+	if (adev->ip_versions[GC_HWIP][0] < IP_VERSION(9, 0, 1))
+		return false;
+
+	if (adev->ip_versions[GC_HWIP][0] == IP_VERSION(10, 1, 3) ||
+	    adev->ip_versions[GC_HWIP][0] == IP_VERSION(10, 1, 4))
+		return false;
+
+	if (adev->gmc.is_app_apu)
+		return false;
+
+	return true;
+}
+
 int kgd2kfd_init_zone_device(struct amdgpu_device *adev)
 {
 	struct amdgpu_kfd_dev *kfddev = &adev->kfd;
@@ -1000,11 +1016,7 @@ int kgd2kfd_init_zone_device(struct amdgpu_device *adev)
 	unsigned long size;
 	void *r;
 
-	/* Page migration works on gfx9 or newer */
-	if (adev->ip_versions[GC_HWIP][0] < IP_VERSION(9, 0, 1))
-		return -EINVAL;
-
-	if (adev->gmc.is_app_apu)
+	if (!is_zone_device_needed(adev))
 		return 0;
 
 	pgmap = &kfddev->pgmap;
-- 
2.25.1