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From 5efc2a33758376e129f341ace63f5015af7f370d Mon Sep 17 00:00:00 2001
From: Yong Zhao <yong.zhao@amd.com>
Date: Mon, 14 May 2018 12:19:22 -0400
Subject: [PATCH 5619/5725] drm/amdkfd: Change the control stack mtype from UC
to NC on GFX9
Due to a HW bug on GFX9, the mtype of control stack buffers, which are
allocated in mqd BOs on VMID 0 gart and are one page offset from mqd
starting addresses, should be set to NC rather than the default gart
mtype UC.
Fix: KFD-381
Change-Id: I865756efb038512ecb5d4071b2e3d3784db5d4ff
Signed-off-by: Yong Zhao <yong.zhao@amd.com>
Signed-off-by: Kalyan Alle <kalyan.alle@amd.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_device.c | 3 ++-
drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
index a9ad2a8..ad01a983 100755
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -456,7 +456,8 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
if (kfd->kfd2kgd->init_gtt_mem_allocation(
kfd->kgd, size, &kfd->gtt_mem,
- &kfd->gtt_start_gpu_addr, &kfd->gtt_start_cpu_ptr)){
+ &kfd->gtt_start_gpu_addr, &kfd->gtt_start_cpu_ptr,
+ false)) {
dev_err(kfd_device, "Could not allocate %d bytes\n", size);
goto out;
}
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
index f4e8efc..5118995 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
@@ -115,7 +115,7 @@ static int init_mqd(struct mqd_manager *mm, void **mqd,
ALIGN(sizeof(struct v9_mqd), PAGE_SIZE),
&((*mqd_mem_obj)->gtt_mem),
&((*mqd_mem_obj)->gpu_addr),
- (void *)&((*mqd_mem_obj)->cpu_ptr));
+ (void *)&((*mqd_mem_obj)->cpu_ptr), true);
} else
retval = kfd_gtt_sa_allocate(mm->dev, sizeof(struct v9_mqd),
mqd_mem_obj);
--
2.7.4
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