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Suravee Suthikulpanit a19d18a117 iommu/amd: Fix performance counter initialization 
[ Upstream commit 6778ff5b21bd8e78c8bd547fd66437cf2657fd9b ]

Certain AMD platforms enable power gating feature for IOMMU PMC,
which prevents the IOMMU driver from updating the counter while
trying to validate the PMC functionality in the init_iommu_perf_ctr().
This results in disabling PMC support and the following error message:

    "AMD-Vi: Unable to read/write to IOMMU perf counter"

To workaround this issue, disable power gating temporarily by programming
the counter source to non-zero value while validating the counter,
and restore the prior state afterward.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Tested-by: Tj (Elloe Linux) <ml.linux@elloe.vision>
Link: https://lore.kernel.org/r/20210208122712.5048-1-suravee.suthikulpanit@amd.com
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=201753
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-17 17:06:24 +01:00
..
amd
iommu/amd: Fix performance counter initialization
2021-03-17 17:06:24 +01:00
arm
iommu/arm-smmu-qcom: Fix mask extraction for bootloader programmed SMRs
2021-03-04 11:38:35 +01:00
intel
iommu/vt-d: Clear PRQ overflow only when PRQ is empty
2021-03-17 17:06:23 +01:00
dma-iommu.c
dma-mapping updates for 5.10
2020-10-15 14:43:29 -07:00
exynos-iommu.c
iommu/exynos: add missing put_device() call in exynos_iommu_of_xlate()
2020-09-24 10:48:29 +02:00
fsl_pamu_domain.c
iommu/pamu: Use dev_iommu_priv_get/set()
2020-06-30 11:59:48 +02:00
fsl_pamu_domain.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 266
2019-06-05 17:30:28 +02:00
fsl_pamu.c
iommu/pamu: Replace use of kzfree with kfree_sensitive
2020-09-18 10:59:04 +02:00
fsl_pamu.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 266
2019-06-05 17:30:28 +02:00
hyperv-iommu.c
x86_ioapic_Consolidate_IOAPIC_allocation
2020-09-16 16:52:32 +02:00
io-pgtable-arm-v7s.c
iommu: Add gfp parameter to io_pgtable_ops->map()
2020-07-24 14:29:47 +02:00
io-pgtable-arm.c
iommu/io-pgtable-arm: Support coherency for Mali LPAE
2021-02-07 15:37:12 +01:00
io-pgtable-arm.h
iommu/io-pgtable-arm: Move some definitions to a header
2020-09-28 23:48:06 +01:00
io-pgtable.c
iommu/io-pgtable-arm: Rationalise TCR handling
2020-01-10 15:52:24 +00:00
ioasid.c
iommu/ioasid: Add custom allocators
2019-10-15 13:34:25 +02:00
iommu-debugfs.c
…
iommu-sysfs.c
drivers/iommu: Export core IOMMU API symbols to permit modular drivers
2019-12-23 14:06:05 +01:00
iommu-traces.c
…
iommu.c
iommu: Properly pass gfp_t in _iommu_map() to avoid atomic sleeping
2021-03-04 11:38:03 +01:00
iova.c
iommu/iova: Replace cmpxchg with xchg in queue_iova
2020-09-04 12:11:06 +02:00
ipmmu-vmsa.c
IOMMU Updates for Linux v5.9
2020-08-11 14:13:24 -07:00
irq_remapping.c
iommu/irq_remapping: Consolidate irq domain lookup
2020-09-16 16:52:30 +02:00
irq_remapping.h
iommu/irq_remapping: Consolidate irq domain lookup
2020-09-16 16:52:30 +02:00
Kconfig
Merge branches 'arm/allwinner', 'arm/mediatek', 'arm/renesas', 'arm/tegra', 'arm/qcom', 'arm/smmu', 'ppc/pamu', 'x86/amd', 'x86/vt-d' and 'core' into next
2020-10-07 11:51:59 +02:00
Makefile
More Arm SMMU updates for 5.9
2020-07-29 14:47:37 +02:00
msm_iommu_hw-8xxx.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 267
2019-06-05 17:30:29 +02:00
msm_iommu.c
iommu: Add gfp parameter to io_pgtable_ops->map()
2020-07-24 14:29:47 +02:00
msm_iommu.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 267
2019-06-05 17:30:29 +02:00
mtk_iommu_v1.c
iommu/mediatek: Do no use dev->archdata.iommu
2020-06-30 11:59:48 +02:00
mtk_iommu.c
iommu: Switch gather->end to the inclusive end
2021-03-04 11:38:01 +01:00
mtk_iommu.h
iommu/mediatek: Add support for MT8167
2020-09-18 10:29:12 +02:00
of_iommu.c
of/device: Add input id to of_dma_configure()
2020-07-28 15:51:32 +01:00
omap-iommu-debug.c
iommu/omap: Check for failure of a call to omap_iommu_dump_ctx
2020-07-22 15:02:33 +02:00
omap-iommu.c
Merge branches 'arm/renesas', 'arm/qcom', 'arm/mediatek', 'arm/omap', 'arm/exynos', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' and 'core' into next
2020-07-29 14:42:00 +02:00
omap-iommu.h
iommu/omap: add support for late attachment of iommu devices
2019-08-09 17:37:10 +02:00
omap-iopgtable.h
iommu/omap: Fix -Woverflow warnings when compiling on 64-bit architectures
2020-03-04 16:24:46 +01:00
rockchip-iommu.c
iommu/rockchip: Use dev_iommu_priv_get/set()
2020-06-30 11:59:48 +02:00
s390-iommu.c
s390 updates for the 5.8 merge window
2020-06-08 12:05:31 -07:00
sun50i-iommu.c
iommu/sun50i: Fix set-but-not-used variable warning
2020-09-04 13:39:45 +02:00
tegra-gart.c
iommu/tegra: Use dev_iommu_priv_get/set()
2020-06-30 11:59:48 +02:00
tegra-smmu.c
iommu/tegra-smmu: Allow to group clients in same swgroup
2020-09-24 12:32:32 +02:00
virtio-iommu.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00