From: Guchun Chen <guchun.chen@amd.com>
Date: Tue, 29 Sep 2020 04:41:41 +0000 (+0800)
Subject: drm/amdgpu: drop duplicated ecc check for vega10 (v5)
X-Git-Tag: v5.10.7~1332^2~8^2~22
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4a20300bc2b49c281f61f97dc398deefdd87d982;p=platform%2Fkernel%2Flinux-rpi.git

drm/amdgpu: drop duplicated ecc check for vega10 (v5)

The same ECC check has been executed in amdgpu_ras_init for vega10,
prior to gmc_v9_0_late_init.

v2: drop all atombios helper callings
v3: use bit operation
v4: correct inline comment, remove parity check statement
v5: squash in build fix

Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index c692fac..3ebbddb 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -1207,21 +1207,16 @@ static int gmc_v9_0_late_init(void *handle)
 	r = amdgpu_gmc_allocate_vm_inv_eng(adev);
 	if (r)
 		return r;
-	/* Check if ecc is available */
+
+	/*
+	 * Workaround performance drop issue with VBIOS enables partial
+	 * writes, while disables HBM ECC for vega10.
+	 */
 	if (!amdgpu_sriov_vf(adev) && (adev->asic_type == CHIP_VEGA10)) {
-		r = amdgpu_atomfirmware_mem_ecc_supported(adev);
-		if (!r) {
-			DRM_INFO("ECC is not present.\n");
+		if (!(adev->ras_features & (1 << AMDGPU_RAS_BLOCK__UMC))) {
 			if (adev->df.funcs->enable_ecc_force_par_wr_rmw)
 				adev->df.funcs->enable_ecc_force_par_wr_rmw(adev, false);
-		} else
-			DRM_INFO("ECC is active.\n");
-
-		r = amdgpu_atomfirmware_sram_ecc_supported(adev);
-		if (!r)
-			DRM_INFO("SRAM ECC is not present.\n");
-		else
-			DRM_INFO("SRAM ECC is active.\n");
+		}
 	}
 
 	if (adev->mmhub.funcs && adev->mmhub.funcs->reset_ras_error_count)