From 8fda90e8214413cc7f9e3c64ad0df7eddffcff62 Mon Sep 17 00:00:00 2001
From: John Clements <John.Clements@amd.com>
Date: Wed, 31 Jul 2019 16:11:08 +0800
Subject: drm/amdgpu: disable MEC2 JT context init for Arcturus
Git-commit: 8fda90e8214413cc7f9e3c64ad0df7eddffcff62
Patch-mainline: v5.4-rc1
References: bsc#1152489

We don't need to handle it like other asics.

Signed-off-by: John Clements <john.clements@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 21c120c52fdd..0951b91180c4 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -1286,11 +1286,17 @@ static int gfx_v9_0_init_cp_compute_microcode(struct amdgpu_device *adev,
 			cp_hdr = (const struct gfx_firmware_header_v1_0 *)info->fw->data;
 			adev->firmware.fw_size +=
 				ALIGN(le32_to_cpu(header->ucode_size_bytes) - le32_to_cpu(cp_hdr->jt_size) * 4, PAGE_SIZE);
-			info = &adev->firmware.ucode[AMDGPU_UCODE_ID_CP_MEC2_JT];
-			info->ucode_id = AMDGPU_UCODE_ID_CP_MEC2_JT;
-			info->fw = adev->gfx.mec2_fw;
-			adev->firmware.fw_size +=
-				ALIGN(le32_to_cpu(cp_hdr->jt_size) * 4, PAGE_SIZE);
+
+			/* TODO: Determine if MEC2 JT FW loading can be removed
+				 for all GFX V9 asic and above */
+			if (adev->asic_type != CHIP_ARCTURUS) {
+				info = &adev->firmware.ucode[AMDGPU_UCODE_ID_CP_MEC2_JT];
+				info->ucode_id = AMDGPU_UCODE_ID_CP_MEC2_JT;
+				info->fw = adev->gfx.mec2_fw;
+				adev->firmware.fw_size +=
+					ALIGN(le32_to_cpu(cp_hdr->jt_size) * 4,
+					PAGE_SIZE);
+			}
 		}
 	}
 
-- 
2.28.0