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From e5c5504c64389201bec2377de804e4277bb18fc8 Mon Sep 17 00:00:00 2001
From: changzhu <Changfeng.Zhu@amd.com>
Date: Tue, 5 Nov 2019 18:29:12 +0800
Subject: [PATCH 4365/4736] drm/amdgpu: add warning for GRBM 1-cycle delay
issue in gfx9
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
It needs to add warning to update firmware in gfx9
in case that firmware is too old to have function to
realize dummy read in cp firmware.
Change-Id: I6aef94f0823138f244f1eedb62fde833dd697023
Signed-off-by: changzhu <Changfeng.Zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index d521facadf59..a3bb662acb1f 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -982,6 +982,13 @@ static void gfx_v9_0_check_fw_write_wait(struct amdgpu_device *adev)
adev->gfx.me_fw_write_wait = false;
adev->gfx.mec_fw_write_wait = false;
+ if ((adev->gfx.mec_fw_version < 0x000001a5) ||
+ (adev->gfx.mec_feature_version < 46) ||
+ (adev->gfx.pfp_fw_version < 0x000000b7) ||
+ (adev->gfx.pfp_feature_version < 46))
+ DRM_WARN_ONCE("Warning: check cp_fw_version and update it to realize \
+ GRBM requires 1-cycle delay in cp firmware\n");
+
switch (adev->asic_type) {
case CHIP_VEGA10:
if ((adev->gfx.me_fw_version >= 0x0000009c) &&
--
2.17.1
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