[git pull] IOMMU Updates for Linux v4.14

From: Joerg Roedel
Date: Sat Sep 09 2017 - 13:33:05 EST

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Hi Linus,

There are some conflicts this time between this pull-request and the SME
support patches that came from the tip-tree, which also touch the
AMD IOMMU driver. Please see my attached resolution of the conflict.

The following changes since commit cc4a41fe5541a73019a864883297bd5043aa6d98:

Linux 4.13-rc7 (2017-08-27 17:20:40 -0700)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git tags/iommu-updates-v4.14

for you to fetch changes up to 47b59d8e40850a05370ee9198ea5e505d89489f1:

Merge branches 'arm/exynos', 'arm/renesas', 'arm/rockchip', 'arm/omap', 'arm/mediatek', 'arm/tegra', 'arm/qcom', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd', 's390' and 'core' into next (2017-09-01 11:31:42 +0200)

----------------------------------------------------------------
IOMMU Updates for Linux v4.14

Slightly more changes than usual this time:

- KDump Kernel IOMMU take-over code for AMD IOMMU. The code now
tries to preserve the mappings of the kernel so that master
aborts for devices are avoided. Master aborts cause some
devices to fail in the kdump kernel, so this code makes the
dump more likely to succeed when AMD IOMMU is enabled.

- Common flush queue implementation for IOVA code users. The
code is still optional, but AMD and Intel IOMMU drivers had
their own implementation which is now unified.

- Finish support for iommu-groups. All drivers implement this
feature now so that IOMMU core code can rely on it.

- Finish support for 'struct iommu_device' in iommu drivers. All
drivers now use the interface.

- New functions in the IOMMU-API for explicit IO/TLB flushing.
This will help to reduce the number of IO/TLB flushes when
IOMMU drivers support this interface.

- Support for mt2712 in the Mediatek IOMMU driver

- New IOMMU driver for QCOM hardware

- System PM support for ARM-SMMU

- Shutdown method for ARM-SMMU-v3

- Some constification patches

- Various other small improvements and fixes

----------------------------------------------------------------
Arnd Bergmann (2):
iommu/exynos: prevent building on big-endian kernels
iommu: qcom: annotate PM functions as __maybe_unused

Arvind Yadav (3):
memory: mtk-smi: Handle return value of clk_prepare_enable
iommu/exynos: Constify iommu_ops
iommu/s390: Constify iommu_ops

Ashok Raj (2):
iommu/vt-d: IOMMU Page Request needs to check if address is canonical.
iommu/vt-d: Avoid calling virt_to_phys() on null pointer

Baoquan He (13):
iommu/amd: Detect pre enabled translation
iommu/amd: Add several helper functions
Revert "iommu/amd: Suppress IO_PAGE_FAULTs in kdump kernel"
iommu/amd: Define bit fields for DTE particularly
iommu/amd: Add function copy_dev_tables()
iommu/amd: Copy old trans table from old kernel
iommu/amd: Do sanity check for address translation and irq remap of old dev table entry
iommu: Add is_attach_deferred call-back to iommu-ops
iommu/amd: Use is_attach_deferred call-back
iommu/amd: Allocate memory below 4G for dev table if translation pre-enabled
iommu/amd: Don't copy GCR3 table root pointer
iommu/amd: Disable iommu only if amd_iommu=off is specified
iommu/amd: Check if domain is NULL in get_domain() and return -EBUSY

Bhumika Goyal (1):
iommu/ipmmu-vmsa: Make ipmmu_gather_ops const

David Dillow (1):
iommu/vt-d: Don't free parent pagetable of the PTE we're adding

Dmitry Osipenko (1):
iommu: Correct iommu_map / iommu_unmap prototypes

Fernando Guzman Lugo (1):
iommu/omap: Fix disabling of MMU upon a fault

Filippo Sironi (1):
iommu/vt-d: Don't be too aggressive when clearing one context entry

Honghui Zhang (3):
memory: mtk-smi: Use of_device_get_match_data helper
memory: mtk-smi: add larbid handle routine
dt-bindings: mediatek: add descriptions for larbid

Joerg Roedel (25):
iommu/pamu: Let PAMU depend on PCI
iommu/pamu: Make driver depend on CONFIG_PHYS_64BIT
iommu/pamu: WARN when fsl_pamu_probe() is called more than once
iommu/pamu: Add support for generic iommu-device
iommu/s390: Add support for iommu_device handling
iommu/iova: Add flush-queue data structures
iommu/iova: Implement Flush-Queue ring buffer
iommu/iova: Add flush counters to Flush-Queue implementation
iommu/iova: Add locking to Flush-Queues
iommu/iova: Add flush timer
iommu/amd: Make use of iova queue flushing
iommu/vt-d: Allow to flush more than 4GB of device TLBs
iommu/vt-d: Make use of iova deferred flushing
Merge branch 'core' into arm/tegra
iommu/tegra: Add support for struct iommu_device
iommu/tegra-gart: Add support for struct iommu_device
Merge branch 'for-joerg/arm-smmu/updates' of git://git.kernel.org/.../will/linux into arm/smmu
iommu/amd: Fix compiler warning in copy_device_table()
iommu/amd: Fix section mismatch warning
Merge branch 'iommu/fixes' into arm/mediatek
iommu/pamu: Fix PAMU boot crash
iommu/amd: Rename a few flush functions
arm/tegra: Call bus_set_iommu() after iommu_device_register()
iommu: Introduce Interface for IOMMU TLB Flushing
Merge branches 'arm/exynos', 'arm/renesas', 'arm/rockchip', 'arm/omap', 'arm/mediatek', 'arm/tegra', 'arm/qcom', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd', 's390' and 'core' into next

Josue Albarran (1):
iommu/omap: Use DMA-API for performing cache flushes

Krzysztof Kozlowski (1):
iommu/exynos: Replace non-existing big-endian Kconfig option

Magnus Damm (4):
iommu/ipmmu-vmsa: Use iommu_device_register()/unregister()
iommu/ipmmu-vmsa: Consistent ->of_xlate() handling
iommu/ipmmu-vmsa: Replace local utlb code with fwspec ids
iommu/ipmmu-vmsa: Use iommu_device_sysfs_add()/remove()

Marek Szyprowski (1):
iommu/exynos: Remove custom platform device registration code

Nate Watterson (1):
iommu/arm-smmu-v3: Implement shutdown method

Oleksandr Tyshchenko (1):
iommu/ipmmu-vmsa: Rereserving a free context before setting up a pagetable

Rob Clark (4):
Docs: dt: document qcom iommu bindings
iommu/arm-smmu: Split out register defines
iommu/qcom: Add qcom_iommu
MAINTAINERS: Add entry for qcom_iommu

Rob Herring (1):
iommu: Convert to using %pOF instead of full_name

Robin Murphy (11):
iommu/of: Handle PCI aliases properly
iommu/ipmmu-vmsa: Use fwspec on both 32 and 64-bit ARM
iommu/ipmmu-vmsa: Clean up device tracking
iommu/msm: Add iommu_group support
iommu/tegra-smmu: Add iommu_group support
iommu/tegra-gart: Add iommu_group support
iommu: Finish making iommu_group support mandatory
iommu/of: Fix of_iommu_configure() for disabled IOMMUs
iommu/arm-smmu: Track context bank state
iommu/arm-smmu: Add system PM support
iommu: Avoid NULL group dereference

Simon Xue (3):
Docs: dt: rockchip: add rockchip,disable-mmu-reset property
iommu/rockchip: add multi irqs support
iommu/rockchip: ignore isp mmu reset operation

Stanimir Varbanov (1):
iommu/qcom: Initialize secure page table

Yong Wu (9):
iommu/mediatek: Move MTK_M4U_TO_LARB/PORT into mtk_iommu.c
iommu/mediatek: Add mt2712 IOMMU support
iommu/mediatek: Merge 2 M4U HWs into one iommu domain
iommu/mediatek: Move pgtable allocation into domain_alloc
iommu/mediatek: Disable iommu clock when system suspend
iommu/mediatek: Enlarge the validate PA range for 4GB mode
memory: mtk-smi: Degrade SMI init to module_init
iommu/mediatek: Fix a build fail of m4u_type
iommu/mediatek: Fix a build warning of BIT(32) in ARM

.../devicetree/bindings/iommu/qcom,iommu.txt | 121 +++
.../devicetree/bindings/iommu/rockchip,iommu.txt | 5 +
.../memory-controllers/mediatek,smi-larb.txt | 15 +
MAINTAINERS | 7 +
arch/s390/include/asm/pci.h | 7 +
arch/s390/pci/pci.c | 9 +-
drivers/iommu/Kconfig | 13 +
drivers/iommu/Makefile | 1 +
drivers/iommu/amd_iommu.c | 313 ++-----
drivers/iommu/amd_iommu_init.c | 223 ++++-
drivers/iommu/amd_iommu_proto.h | 2 +
drivers/iommu/amd_iommu_types.h | 55 +-
drivers/iommu/amd_iommu_v2.c | 18 +-
drivers/iommu/arm-smmu-regs.h | 220 +++++
drivers/iommu/arm-smmu-v3.c | 7 +
drivers/iommu/arm-smmu.c | 384 +++------
drivers/iommu/dmar.c | 2 +-
drivers/iommu/exynos-iommu.c | 44 +-
drivers/iommu/fsl_pamu.c | 27 +-
drivers/iommu/fsl_pamu_domain.c | 28 +-
drivers/iommu/intel-iommu.c | 280 ++-----
drivers/iommu/intel-svm.c | 14 +
drivers/iommu/iommu.c | 59 +-
drivers/iommu/iova.c | 183 ++++
drivers/iommu/ipmmu-vmsa.c | 242 ++----
drivers/iommu/msm_iommu.c | 15 +-
drivers/iommu/mtk_iommu.c | 214 +++--
drivers/iommu/mtk_iommu.h | 9 +
drivers/iommu/of_iommu.c | 144 ++--
drivers/iommu/omap-iommu.c | 125 ++-
drivers/iommu/omap-iommu.h | 1 +
drivers/iommu/qcom_iommu.c | 930 +++++++++++++++++++++
drivers/iommu/rockchip-iommu.c | 52 +-
drivers/iommu/s390-iommu.c | 37 +-
drivers/iommu/tegra-gart.c | 45 +
drivers/iommu/tegra-smmu.c | 39 +-
drivers/memory/mtk-smi.c | 96 ++-
include/dt-bindings/memory/mt8173-larb-port.h | 4 -
include/linux/iommu.h | 55 +-
include/linux/iova.h | 67 ++
include/soc/mediatek/smi.h | 2 +-
41 files changed, 2881 insertions(+), 1233 deletions(-)
create mode 100644 Documentation/devicetree/bindings/iommu/qcom,iommu.txt
create mode 100644 drivers/iommu/arm-smmu-regs.h
create mode 100644 drivers/iommu/qcom_iommu.c

Please pull.

Thanks,

Joerg

My conflict resolution:

diff --cc drivers/iommu/amd_iommu.c
index 4ad7e5e31943,538c16f669f9..51f8215877f5
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@@ -1538,10 -1476,10 +1478,10 @@@ static int iommu_map_page(struct protec
return -EBUSY;

if (count > 1) {
- __pte = PAGE_SIZE_PTE(phys_addr, page_size);
+ __pte = PAGE_SIZE_PTE(__sme_set(phys_addr), page_size);
- __pte |= PM_LEVEL_ENC(7) | IOMMU_PTE_P | IOMMU_PTE_FC;
+ __pte |= PM_LEVEL_ENC(7) | IOMMU_PTE_PR | IOMMU_PTE_FC;
} else
- __pte = __sme_set(phys_addr) | IOMMU_PTE_P | IOMMU_PTE_FC;
- __pte = phys_addr | IOMMU_PTE_PR | IOMMU_PTE_FC;
++ __pte = __sme_set(phys_addr) | IOMMU_PTE_PR | IOMMU_PTE_FC;

if (prot & IOMMU_PROT_IR)
__pte |= IOMMU_PTE_IR;
diff --cc drivers/iommu/amd_iommu_proto.h
index 3f12fb2338ea,90e62e9b01c5..b3dc7136d3e8
--- a/drivers/iommu/amd_iommu_proto.h
+++ b/drivers/iommu/amd_iommu_proto.h
@@@ -87,14 -87,6 +87,17 @@@ static inline bool iommu_feature(struc
return !!(iommu->features & f);
}

+static inline u64 iommu_virt_to_phys(void *vaddr)
+{
+ return (u64)__sme_set(virt_to_phys(vaddr));
+}
+
+static inline void *iommu_phys_to_virt(unsigned long paddr)
+{
+ return phys_to_virt(__sme_clr(paddr));
+}
+
+ extern bool translation_pre_enabled(struct amd_iommu *iommu);
+ extern struct iommu_dev_data *get_dev_data(struct device *dev);
++
#endif /* _ASM_X86_AMD_IOMMU_PROTO_H */
diff --cc drivers/iommu/amd_iommu_types.h
index 8e3a85759242,5f775fef341c..f6b24c7d8b70
--- a/drivers/iommu/amd_iommu_types.h
+++ b/drivers/iommu/amd_iommu_types.h
@@@ -343,8 -361,8 +361,8 @@@
#define GCR3_VALID 0x01ULL

#define IOMMU_PAGE_MASK (((1ULL << 52) - 1) & ~0xfffULL)
- #define IOMMU_PTE_PRESENT(pte) ((pte) & IOMMU_PTE_P)
+ #define IOMMU_PTE_PRESENT(pte) ((pte) & IOMMU_PTE_PR)
-#define IOMMU_PTE_PAGE(pte) (phys_to_virt((pte) & IOMMU_PAGE_MASK))
+#define IOMMU_PTE_PAGE(pte) (iommu_phys_to_virt((pte) & IOMMU_PAGE_MASK))
#define IOMMU_PTE_MODE(pte) (((pte) >> 9) & 0x07)

#define IOMMU_PROT_MASK 0x03

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