From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Guchun Chen <guchun.chen@amd.com>,
Hawking Zhang <Hawking.Zhang@amd.com>,
Alex Deucher <alexander.deucher@amd.com>,
Sasha Levin <sashal@kernel.org>,
amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Subject: [PATCH AUTOSEL 4.19 03/34] drm/amdgpu: add check before enabling/disabling broadcast mode
Date: Fri, 20 Dec 2019 09:34:02 -0500 [thread overview]
Message-ID: <20191220143433.9922-3-sashal@kernel.org> (raw)
In-Reply-To: <20191220143433.9922-1-sashal@kernel.org>
From: Guchun Chen <guchun.chen@amd.com>
[ Upstream commit 6e807535dae5dbbd53bcc5e81047a20bf5eb08ea ]
When security violation from new vbios happens, data fabric is
risky to stop working. So prevent the direct access to DF
mmFabricConfigAccessControl from the new vbios and onwards.
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/df_v3_6.c | 38 ++++++++++++++++------------
1 file changed, 22 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/df_v3_6.c b/drivers/gpu/drm/amd/amdgpu/df_v3_6.c
index d5ebe566809b2..a1c941229f4b3 100644
--- a/drivers/gpu/drm/amd/amdgpu/df_v3_6.c
+++ b/drivers/gpu/drm/amd/amdgpu/df_v3_6.c
@@ -75,23 +75,29 @@ static void df_v3_6_update_medium_grain_clock_gating(struct amdgpu_device *adev,
{
u32 tmp;
- /* Put DF on broadcast mode */
- adev->df_funcs->enable_broadcast_mode(adev, true);
-
- if (enable && (adev->cg_flags & AMD_CG_SUPPORT_DF_MGCG)) {
- tmp = RREG32_SOC15(DF, 0, mmDF_PIE_AON0_DfGlobalClkGater);
- tmp &= ~DF_PIE_AON0_DfGlobalClkGater__MGCGMode_MASK;
- tmp |= DF_V3_6_MGCG_ENABLE_15_CYCLE_DELAY;
- WREG32_SOC15(DF, 0, mmDF_PIE_AON0_DfGlobalClkGater, tmp);
- } else {
- tmp = RREG32_SOC15(DF, 0, mmDF_PIE_AON0_DfGlobalClkGater);
- tmp &= ~DF_PIE_AON0_DfGlobalClkGater__MGCGMode_MASK;
- tmp |= DF_V3_6_MGCG_DISABLE;
- WREG32_SOC15(DF, 0, mmDF_PIE_AON0_DfGlobalClkGater, tmp);
+ if (adev->cg_flags & AMD_CG_SUPPORT_DF_MGCG) {
+ /* Put DF on broadcast mode */
+ adev->df_funcs->enable_broadcast_mode(adev, true);
+
+ if (enable) {
+ tmp = RREG32_SOC15(DF, 0,
+ mmDF_PIE_AON0_DfGlobalClkGater);
+ tmp &= ~DF_PIE_AON0_DfGlobalClkGater__MGCGMode_MASK;
+ tmp |= DF_V3_6_MGCG_ENABLE_15_CYCLE_DELAY;
+ WREG32_SOC15(DF, 0,
+ mmDF_PIE_AON0_DfGlobalClkGater, tmp);
+ } else {
+ tmp = RREG32_SOC15(DF, 0,
+ mmDF_PIE_AON0_DfGlobalClkGater);
+ tmp &= ~DF_PIE_AON0_DfGlobalClkGater__MGCGMode_MASK;
+ tmp |= DF_V3_6_MGCG_DISABLE;
+ WREG32_SOC15(DF, 0,
+ mmDF_PIE_AON0_DfGlobalClkGater, tmp);
+ }
+
+ /* Exit broadcast mode */
+ adev->df_funcs->enable_broadcast_mode(adev, false);
}
-
- /* Exit broadcast mode */
- adev->df_funcs->enable_broadcast_mode(adev, false);
}
static void df_v3_6_get_clockgating_state(struct amdgpu_device *adev,
--
2.20.1
next prev parent reply other threads:[~2019-12-20 14:37 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-20 14:34 [PATCH AUTOSEL 4.19 01/34] nvme_fc: add module to ops template to allow module references Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 02/34] nvme-fc: fix double-free scenarios on hw queues Sasha Levin
2019-12-20 14:34 ` Sasha Levin [this message]
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 04/34] drm/amdgpu: add cache flush workaround to gfx8 emit_fence Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 05/34] drm/amd/display: Fixed kernel panic when booting with DP-to-HDMI dongle Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 06/34] iio: adc: max9611: Fix too short conversion time delay Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 07/34] PM / devfreq: Fix devfreq_notifier_call returning errno Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 08/34] PM / devfreq: Set scaling_max_freq to max on OPP notifier error Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 09/34] PM / devfreq: Don't fail devfreq_dev_release if not in list Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 10/34] afs: Fix afs_find_server lookups for ipv4 peers Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 11/34] afs: Fix SELinux setting security label on /afs Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 12/34] RDMA/cma: add missed unregister_pernet_subsys in init failure Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 13/34] rxe: correctly calculate iCRC for unaligned payloads Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 14/34] scsi: lpfc: Fix memory leak on lpfc_bsg_write_ebuf_set func Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 15/34] scsi: qla2xxx: Drop superfluous INIT_WORK of del_work Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 16/34] scsi: qla2xxx: Don't call qlt_async_event twice Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 17/34] scsi: qla2xxx: Fix PLOGI payload and ELS IOCB dump length Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 18/34] scsi: qla2xxx: Configure local loop for N2N target Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 19/34] scsi: qla2xxx: Send Notify ACK after N2N PLOGI Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 20/34] scsi: qla2xxx: Ignore PORT UPDATE " Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 21/34] scsi: iscsi: qla4xxx: fix double free in probe Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 22/34] scsi: libsas: stop discovering if oob mode is disconnected Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 23/34] drm/nouveau: Move the declaration of struct nouveau_conn_atom up a bit Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 24/34] usb: gadget: fix wrong endpoint desc Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 25/34] net: make socket read/write_iter() honor IOCB_NOWAIT Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 26/34] afs: Fix creation calls in the dynamic root to fail with EOPNOTSUPP Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 27/34] md: raid1: check rdev before reference in raid1_sync_request func Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 28/34] s390/cpum_sf: Adjust sampling interval to avoid hitting sample limits Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 29/34] s390/cpum_sf: Avoid SBD overflow condition in irq handler Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 30/34] IB/mlx4: Follow mirror sequence of device add during device removal Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 31/34] IB/mlx5: Fix steering rule of drop and count Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 32/34] xen-blkback: prevent premature module unload Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 33/34] xen/balloon: fix ballooned page accounting without hotplug enabled Sasha Levin
2019-12-20 14:34 ` [PATCH AUTOSEL 4.19 34/34] PM / hibernate: memory_bm_find_bit(): Tighten node optimisation Sasha Levin
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