From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E26B37E for ; Wed, 2 Nov 2022 02:41:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F2255C433D6; Wed, 2 Nov 2022 02:41:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1667356899; bh=hHE9ViEJrYi4GNRrsd1OblH35/W9e2fE7CytOPY/KG4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ak6C0NtmE/W+Mw9+dB6RMQgh73yG96eFC4mt+MJ3TnM2RwVQ/U4sOSNokUvXFYJNM rx40txPtqLlMg7SsTUkLYR8Q/5hqcBIN+K5+oe1dk8KjHHrGi2hcQwlD1FaYEV6ElV GJ6iRSaq95+Z9XaMLIfYpX8UQmpST2Y34jSSHqXQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Lijo Lazar , Guchun Chen , Alex Deucher Subject: [PATCH 6.0 061/240] drm/amdgpu: Remove ATC L2 access for MMHUB 2.1.x Date: Wed, 2 Nov 2022 03:30:36 +0100 Message-Id: <20221102022112.778610824@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221102022111.398283374@linuxfoundation.org> References: <20221102022111.398283374@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Lijo Lazar commit d2c4c1569a7d7d5c8f75963bf2d62d7aeac30e2a upstream. MMHUB 2.1.x versions don't have ATCL2. Remove accesses to ATCL2 registers. Since they are non-existing registers, read access will cause a 'Completer Abort' and gets reported when AER is enabled with the below patch. Tagging with the patch so that this is backported along with it. v2: squash in uninitialized warning fix (Nathan Chancellor) Fixes: 8795e182b02d ("PCI/portdrv: Don't disable AER reporting in get_port_device_capability()") Signed-off-by: Lijo Lazar Reviewed-by: Guchun Chen Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c | 28 ++++++++-------------------- 1 file changed, 8 insertions(+), 20 deletions(-) --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c @@ -32,8 +32,6 @@ #include "gc/gc_10_1_0_offset.h" #include "soc15_common.h" -#define mmMM_ATC_L2_MISC_CG_Sienna_Cichlid 0x064d -#define mmMM_ATC_L2_MISC_CG_Sienna_Cichlid_BASE_IDX 0 #define mmDAGB0_CNTL_MISC2_Sienna_Cichlid 0x0070 #define mmDAGB0_CNTL_MISC2_Sienna_Cichlid_BASE_IDX 0 @@ -574,7 +572,6 @@ static void mmhub_v2_0_update_medium_gra case IP_VERSION(2, 1, 0): case IP_VERSION(2, 1, 1): case IP_VERSION(2, 1, 2): - def = data = RREG32_SOC15(MMHUB, 0, mmMM_ATC_L2_MISC_CG_Sienna_Cichlid); def1 = data1 = RREG32_SOC15(MMHUB, 0, mmDAGB0_CNTL_MISC2_Sienna_Cichlid); break; default: @@ -608,8 +605,6 @@ static void mmhub_v2_0_update_medium_gra case IP_VERSION(2, 1, 0): case IP_VERSION(2, 1, 1): case IP_VERSION(2, 1, 2): - if (def != data) - WREG32_SOC15(MMHUB, 0, mmMM_ATC_L2_MISC_CG_Sienna_Cichlid, data); if (def1 != data1) WREG32_SOC15(MMHUB, 0, mmDAGB0_CNTL_MISC2_Sienna_Cichlid, data1); break; @@ -634,8 +629,8 @@ static void mmhub_v2_0_update_medium_gra case IP_VERSION(2, 1, 0): case IP_VERSION(2, 1, 1): case IP_VERSION(2, 1, 2): - def = data = RREG32_SOC15(MMHUB, 0, mmMM_ATC_L2_MISC_CG_Sienna_Cichlid); - break; + /* There is no ATCL2 in MMHUB for 2.1.x */ + return; default: def = data = RREG32_SOC15(MMHUB, 0, mmMM_ATC_L2_MISC_CG); break; @@ -646,18 +641,8 @@ static void mmhub_v2_0_update_medium_gra else data &= ~MM_ATC_L2_MISC_CG__MEM_LS_ENABLE_MASK; - if (def != data) { - switch (adev->ip_versions[MMHUB_HWIP][0]) { - case IP_VERSION(2, 1, 0): - case IP_VERSION(2, 1, 1): - case IP_VERSION(2, 1, 2): - WREG32_SOC15(MMHUB, 0, mmMM_ATC_L2_MISC_CG_Sienna_Cichlid, data); - break; - default: - WREG32_SOC15(MMHUB, 0, mmMM_ATC_L2_MISC_CG, data); - break; - } - } + if (def != data) + WREG32_SOC15(MMHUB, 0, mmMM_ATC_L2_MISC_CG, data); } static int mmhub_v2_0_set_clockgating(struct amdgpu_device *adev, @@ -695,7 +680,10 @@ static void mmhub_v2_0_get_clockgating(s case IP_VERSION(2, 1, 0): case IP_VERSION(2, 1, 1): case IP_VERSION(2, 1, 2): - data = RREG32_SOC15(MMHUB, 0, mmMM_ATC_L2_MISC_CG_Sienna_Cichlid); + /* There is no ATCL2 in MMHUB for 2.1.x. Keep the status + * based on DAGB + */ + data = MM_ATC_L2_MISC_CG__ENABLE_MASK; data1 = RREG32_SOC15(MMHUB, 0, mmDAGB0_CNTL_MISC2_Sienna_Cichlid); break; default: