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drm/amdgpu: Remove ATC L2 access for MMHUB 2.1.x

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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: 8795e182b0 ("PCI/portdrv: Don't disable AER reporting in get_port_device_capability()")

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Lijo Lazar 2022-09-30 10:43:08 +05:30 committed by Alex Deucher
parent 226dcfad34
commit d2c4c1569a
1 changed files with 8 additions and 20 deletions
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28
drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c
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@ -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_grain_clock_gating(struct amdgpu_device *ad
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_grain_clock_gating(struct amdgpu_device *ad
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_grain_light_sleep(struct amdgpu_device *ade
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_grain_light_sleep(struct amdgpu_device *ade
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(struct amdgpu_device *adev, u64 *flags)
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: