From 2cd826c5f730b4b6a766bafe1d29550b82f0bb58 Mon Sep 17 00:00:00 2001
From: Jack Xiao <Jack.Xiao@amd.com>
Date: Fri, 27 Mar 2020 18:11:15 +0800
Subject: drm/amdgpu/mes: add helper functions to alloc/free ctx metadata
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Git-commit: e3652b0976f383dea912607a404e974632b019b1
Patch-mainline: v5.19-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

Add the helper functions to allocate/free context metadata.

Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c | 25 +++++++++++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h |  4 ++++
 2 files changed, 29 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
index fa43a7e3c9ab..6c01581e3a7b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
@@ -857,3 +857,28 @@ void amdgpu_mes_remove_ring(struct amdgpu_device *adev,
 	amdgpu_ring_fini(ring);
 	kfree(ring);
 }
+
+int amdgpu_mes_ctx_alloc_meta_data(struct amdgpu_device *adev,
+				   struct amdgpu_mes_ctx_data *ctx_data)
+{
+	int r;
+
+	r = amdgpu_bo_create_kernel(adev,
+			    sizeof(struct amdgpu_mes_ctx_meta_data),
+			    PAGE_SIZE, AMDGPU_GEM_DOMAIN_GTT,
+			    &ctx_data->meta_data_obj, NULL,
+			    &ctx_data->meta_data_ptr);
+	if (!ctx_data->meta_data_obj)
+		return -ENOMEM;
+
+	memset(ctx_data->meta_data_ptr, 0,
+	       sizeof(struct amdgpu_mes_ctx_meta_data));
+
+	return 0;
+}
+
+void amdgpu_mes_ctx_free_meta_data(struct amdgpu_mes_ctx_data *ctx_data)
+{
+	if (ctx_data->meta_data_obj)
+		amdgpu_bo_free_kernel(&ctx_data->meta_data_obj, NULL, NULL);
+}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
index b68719823195..828d52cdc297 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
@@ -262,4 +262,8 @@ int amdgpu_mes_add_ring(struct amdgpu_device *adev, int gang_id,
 void amdgpu_mes_remove_ring(struct amdgpu_device *adev,
 			    struct amdgpu_ring *ring);
 
+int amdgpu_mes_ctx_alloc_meta_data(struct amdgpu_device *adev,
+				   struct amdgpu_mes_ctx_data *ctx_data);
+void amdgpu_mes_ctx_free_meta_data(struct amdgpu_mes_ctx_data *ctx_data);
+
 #endif /* __AMDGPU_MES_H__ */
-- 
2.38.1