diff options
Diffstat (limited to 'dts/Bindings/iommu')
| -rw-r--r-- | dts/Bindings/iommu/allwinner,sun50i-h6-iommu.yaml | 61 | ||||
| -rw-r--r-- | dts/Bindings/iommu/apple,dart.yaml | 88 | ||||
| -rw-r--r-- | dts/Bindings/iommu/apple,sart.yaml | 56 | ||||
| -rw-r--r-- | dts/Bindings/iommu/arm,smmu-v3.yaml | 12 | ||||
| -rw-r--r-- | dts/Bindings/iommu/arm,smmu.yaml | 477 | ||||
| -rw-r--r-- | dts/Bindings/iommu/iommu.txt | 18 | ||||
| -rw-r--r-- | dts/Bindings/iommu/mediatek,iommu.txt | 101 | ||||
| -rw-r--r-- | dts/Bindings/iommu/mediatek,iommu.yaml | 230 | ||||
| -rw-r--r-- | dts/Bindings/iommu/qcom,iommu.txt | 121 | ||||
| -rw-r--r-- | dts/Bindings/iommu/qcom,iommu.yaml | 125 | ||||
| -rw-r--r-- | dts/Bindings/iommu/renesas,ipmmu-vmsa.txt | 73 | ||||
| -rw-r--r-- | dts/Bindings/iommu/renesas,ipmmu-vmsa.yaml | 140 | ||||
| -rw-r--r-- | dts/Bindings/iommu/rockchip,iommu.txt | 38 | ||||
| -rw-r--r-- | dts/Bindings/iommu/rockchip,iommu.yaml | 88 | ||||
| -rw-r--r-- | dts/Bindings/iommu/samsung,sysmmu.yaml | 23 | ||||
| -rw-r--r-- | dts/Bindings/iommu/sprd,iommu.yaml | 57 | ||||
| -rw-r--r-- | dts/Bindings/iommu/xen,grant-dma.yaml | 39 |
17 files changed, 1377 insertions, 370 deletions
diff --git a/dts/Bindings/iommu/allwinner,sun50i-h6-iommu.yaml b/dts/Bindings/iommu/allwinner,sun50i-h6-iommu.yaml new file mode 100644 index 0000000000..e20016f120 --- /dev/null +++ b/dts/Bindings/iommu/allwinner,sun50i-h6-iommu.yaml @@ -0,0 +1,61 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/allwinner,sun50i-h6-iommu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Allwinner H6 IOMMU + +maintainers: + - Chen-Yu Tsai <wens@csie.org> + - Maxime Ripard <mripard@kernel.org> + +properties: + "#iommu-cells": + const: 1 + description: + The content of the cell is the master ID. + + compatible: + const: allwinner,sun50i-h6-iommu + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + resets: + maxItems: 1 + +required: + - "#iommu-cells" + - compatible + - reg + - interrupts + - clocks + - resets + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/interrupt-controller/irq.h> + + #include <dt-bindings/clock/sun50i-h6-ccu.h> + #include <dt-bindings/reset/sun50i-h6-ccu.h> + + iommu: iommu@30f0000 { + compatible = "allwinner,sun50i-h6-iommu"; + reg = <0x030f0000 0x10000>; + interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&ccu CLK_BUS_IOMMU>; + resets = <&ccu RST_BUS_IOMMU>; + #iommu-cells = <1>; + }; + +... diff --git a/dts/Bindings/iommu/apple,dart.yaml b/dts/Bindings/iommu/apple,dart.yaml new file mode 100644 index 0000000000..7adb1de455 --- /dev/null +++ b/dts/Bindings/iommu/apple,dart.yaml @@ -0,0 +1,88 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/apple,dart.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Apple DART IOMMU + +maintainers: + - Sven Peter <sven@svenpeter.dev> + +description: |+ + Apple SoCs may contain an implementation of their Device Address + Resolution Table which provides a mandatory layer of address + translations for various masters. + + Each DART instance is capable of handling up to 16 different streams + with individual pagetables and page-level read/write protection flags. + + This DART IOMMU also raises interrupts in response to various + fault conditions. + +properties: + compatible: + enum: + - apple,t8103-dart + - apple,t8103-usb4-dart + - apple,t8110-dart + - apple,t6000-dart + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + description: + Reference to the gate clock phandle if required for this IOMMU. + Optional since not all IOMMUs are attached to a clock gate. + + '#iommu-cells': + const: 1 + description: + Has to be one. The single cell describes the stream id emitted by + a master to the IOMMU. + + power-domains: + maxItems: 1 + +required: + - compatible + - reg + - '#iommu-cells' + - interrupts + +additionalProperties: false + +examples: + - |+ + dart1: iommu@82f80000 { + compatible = "apple,t8103-dart"; + reg = <0x82f80000 0x4000>; + interrupts = <1 781 4>; + #iommu-cells = <1>; + }; + + master1 { + iommus = <&dart1 0>; + }; + + - |+ + dart2a: iommu@82f00000 { + compatible = "apple,t8103-dart"; + reg = <0x82f00000 0x4000>; + interrupts = <1 781 4>; + #iommu-cells = <1>; + }; + dart2b: iommu@82f80000 { + compatible = "apple,t8103-dart"; + reg = <0x82f80000 0x4000>; + interrupts = <1 781 4>; + #iommu-cells = <1>; + }; + + master2 { + iommus = <&dart2a 0>, <&dart2b 1>; + }; diff --git a/dts/Bindings/iommu/apple,sart.yaml b/dts/Bindings/iommu/apple,sart.yaml new file mode 100644 index 0000000000..e87c1520fe --- /dev/null +++ b/dts/Bindings/iommu/apple,sart.yaml @@ -0,0 +1,56 @@ +# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/apple,sart.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Apple SART DMA address filter + +maintainers: + - Sven Peter <sven@svenpeter.dev> + +description: + Apple SART is a simple address filter for DMA transactions. Regions of + physical memory must be added to the SART's allow list before any + DMA can target these. Unlike a proper IOMMU no remapping can be done and + special support in the consumer driver is required since not all DMA + transactions of a single device are subject to SART filtering. + + SART1 has first been used since at least the A11 (iPhone 8 and iPhone X) + and allows 36 bit of physical address space and filter entries with sizes + up to 24 bit. + + SART2, first seen in A14 and M1, allows 36 bit of physical address space + and filter entry size up to 36 bit. + + SART3, first seen in M1 Pro/Max, extends both the address space and filter + entry size to 42 bit. + +properties: + compatible: + oneOf: + - items: + - const: apple,t8112-sart + - const: apple,t6000-sart + - enum: + - apple,t6000-sart + - apple,t8103-sart + + reg: + maxItems: 1 + + power-domains: + maxItems: 1 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + iommu@7bc50000 { + compatible = "apple,t8103-sart"; + reg = <0x7bc50000 0x4000>; + }; diff --git a/dts/Bindings/iommu/arm,smmu-v3.yaml b/dts/Bindings/iommu/arm,smmu-v3.yaml index 5951c6f98c..75fcf4cb52 100644 --- a/dts/Bindings/iommu/arm,smmu-v3.yaml +++ b/dts/Bindings/iommu/arm,smmu-v3.yaml @@ -37,13 +37,13 @@ properties: hardware supports just a single, combined interrupt line. If provided, then the combined interrupt will be used in preference to any others. - - minItems: 2 - maxItems: 4 + - minItems: 1 items: - - const: eventq # Event Queue not empty - - const: gerror # Global Error activated - - const: priq # PRI Queue not empty - - const: cmdq-sync # CMD_SYNC complete + enum: + - eventq # Event Queue not empty + - gerror # Global Error activated + - cmdq-sync # CMD_SYNC complete + - priq # PRI Queue not empty '#iommu-cells': const: 1 diff --git a/dts/Bindings/iommu/arm,smmu.yaml b/dts/Bindings/iommu/arm,smmu.yaml index 6515dbe475..5c130cf06a 100644 --- a/dts/Bindings/iommu/arm,smmu.yaml +++ b/dts/Bindings/iommu/arm,smmu.yaml @@ -28,20 +28,122 @@ properties: - enum: - qcom,msm8996-smmu-v2 - qcom,msm8998-smmu-v2 - - qcom,sdm845-smmu-v2 + - qcom,sdm630-smmu-v2 + - qcom,sm6375-smmu-v2 - const: qcom,smmu-v2 - - description: Qcom SoCs implementing "arm,mmu-500" + - description: Qcom SoCs implementing "qcom,smmu-500" and "arm,mmu-500" + items: + - enum: + - qcom,qcm2290-smmu-500 + - qcom,qdu1000-smmu-500 + - qcom,sa8775p-smmu-500 + - qcom,sc7180-smmu-500 + - qcom,sc7280-smmu-500 + - qcom,sc8180x-smmu-500 + - qcom,sc8280xp-smmu-500 + - qcom,sdm670-smmu-500 + - qcom,sdm845-smmu-500 + - qcom,sdx55-smmu-500 + - qcom,sdx65-smmu-500 + - qcom,sdx75-smmu-500 + - qcom,sm6115-smmu-500 + - qcom,sm6125-smmu-500 + - qcom,sm6350-smmu-500 + - qcom,sm6375-smmu-500 + - qcom,sm8150-smmu-500 + - qcom,sm8250-smmu-500 + - qcom,sm8350-smmu-500 + - qcom,sm8450-smmu-500 + - qcom,sm8550-smmu-500 + - qcom,sm8650-smmu-500 + - qcom,x1e80100-smmu-500 + - const: qcom,smmu-500 + - const: arm,mmu-500 + + - description: Qcom SoCs implementing "arm,mmu-500" (legacy binding) + deprecated: true items: + # Do not add additional SoC to this list. Instead use two previous lists. - enum: + - qcom,qcm2290-smmu-500 - qcom,sc7180-smmu-500 + - qcom,sc7280-smmu-500 + - qcom,sc8180x-smmu-500 + - qcom,sc8280xp-smmu-500 - qcom,sdm845-smmu-500 + - qcom,sm6115-smmu-500 + - qcom,sm6350-smmu-500 + - qcom,sm6375-smmu-500 + - qcom,sm8150-smmu-500 + - qcom,sm8250-smmu-500 + - qcom,sm8350-smmu-500 + - qcom,sm8450-smmu-500 + - const: arm,mmu-500 + - description: Qcom Adreno GPUs implementing "qcom,smmu-500" and "arm,mmu-500" + items: + - enum: + - qcom,qcm2290-smmu-500 + - qcom,sa8775p-smmu-500 + - qcom,sc7280-smmu-500 + - qcom,sc8280xp-smmu-500 + - qcom,sm6115-smmu-500 + - qcom,sm6125-smmu-500 + - qcom,sm8150-smmu-500 + - qcom,sm8250-smmu-500 + - qcom,sm8350-smmu-500 + - qcom,sm8450-smmu-500 + - qcom,sm8550-smmu-500 + - qcom,sm8650-smmu-500 + - const: qcom,adreno-smmu + - const: qcom,smmu-500 - const: arm,mmu-500 + - description: Qcom Adreno GPUs implementing "arm,mmu-500" (legacy binding) + deprecated: true + items: + # Do not add additional SoC to this list. Instead use previous list. + - enum: + - qcom,sc7280-smmu-500 + - qcom,sm8150-smmu-500 + - qcom,sm8250-smmu-500 + - const: qcom,adreno-smmu + - const: arm,mmu-500 + - description: Qcom Adreno GPUs implementing "arm,smmu-v2" + items: + - enum: + - qcom,msm8996-smmu-v2 + - qcom,sc7180-smmu-v2 + - qcom,sdm630-smmu-v2 + - qcom,sdm845-smmu-v2 + - qcom,sm6350-smmu-v2 + - qcom,sm7150-smmu-v2 + - const: qcom,adreno-smmu + - const: qcom,smmu-v2 + - description: Qcom Adreno GPUs on Google Cheza platform + items: + - const: qcom,sdm845-smmu-v2 + - const: qcom,smmu-v2 + - description: Marvell SoCs implementing "arm,mmu-500" + items: + - const: marvell,ap806-smmu-500 + - const: arm,mmu-500 + - description: NVIDIA SoCs that require memory controller interaction + and may program multiple ARM MMU-500s identically with the memory + controller interleaving translations between multiple instances + for improved performance. + items: + - enum: + - nvidia,tegra186-smmu + - nvidia,tegra194-smmu + - nvidia,tegra234-smmu + - const: nvidia,smmu-500 - items: - const: arm,mmu-500 - const: arm,smmu-v2 - items: - - const: arm,mmu-401 + - enum: + - arm,mmu-400 + - arm,mmu-401 - const: arm,smmu-v1 - enum: - arm,smmu-v1 @@ -52,12 +154,12 @@ properties: - cavium,smmu-v2 reg: - maxItems: 1 + minItems: 1 + maxItems: 2 '#global-interrupts': description: The number of global interrupts exposed by the device. - allOf: - - $ref: /schemas/types.yaml#/definitions/uint32 + $ref: /schemas/types.yaml#/definitions/uint32 minimum: 0 maximum: 260 # 2 secure, 2 non-secure, and up to 256 perf counters @@ -113,19 +215,27 @@ properties: present in such cases. clock-names: - items: - - const: bus - - const: iface + minItems: 1 + maxItems: 7 clocks: - items: - - description: bus clock required for downstream bus access and for the - smmu ptw - - description: interface clock required to access smmu's registers - through the TCU's programming interface. + minItems: 1 + maxItems: 7 power-domains: - maxItems: 1 + minItems: 1 + maxItems: 3 + + nvidia,memory-controller: + description: | + A phandle to the memory controller on NVIDIA Tegra186 and later SoCs. + The memory controller needs to be programmed with a mapping of memory + client IDs to ARM SMMU stream IDs. + + If this property is absent, the mapping programmed by early firmware + will be used and it is not guaranteed that IOMMU translations will be + enabled for any given device. + $ref: /schemas/types.yaml#/definitions/phandle required: - compatible @@ -136,6 +246,343 @@ required: additionalProperties: false +allOf: + - if: + properties: + compatible: + contains: + enum: + - nvidia,tegra186-smmu + - nvidia,tegra194-smmu + - nvidia,tegra234-smmu + then: + properties: + reg: + minItems: 1 + maxItems: 2 + + # The reference to the memory controller is required to ensure that the + # memory client to stream ID mapping can be done synchronously with the + # IOMMU attachment. + required: + - nvidia,memory-controller + else: + properties: + reg: + maxItems: 1 + + - if: + properties: + compatible: + contains: + enum: + - qcom,msm8998-smmu-v2 + - qcom,sdm630-smmu-v2 + then: + anyOf: + - properties: + clock-names: + items: + - const: bus + clocks: + items: + - description: bus clock required for downstream bus access and for + the smmu ptw + - properties: + clock-names: + items: + - const: iface + - const: mem + - const: mem_iface + clocks: + items: + - description: interface clock required to access smmu's registers + through the TCU's programming interface. + - description: bus clock required for memory access + - description: bus clock required for GPU memory access + - properties: + clock-names: + items: + - const: iface-mm + - const: iface-smmu + - const: bus-smmu + clocks: + items: + - description: interface clock required to access mnoc's registers + through the TCU's programming interface. + - description: interface clock required to access smmu's registers + through the TCU's programming interface. + - description: bus clock required for the smmu ptw + + - if: + properties: + compatible: + contains: + enum: + - qcom,sm6375-smmu-v2 + then: + anyOf: + - properties: + clock-names: + items: + - const: bus + clocks: + items: + - description: bus clock required for downstream bus access and for + the smmu ptw + - properties: + clock-names: + items: + - const: iface + - const: mem + - const: mem_iface + clocks: + items: + - description: interface clock required to access smmu's registers + through the TCU's programming interface. + - description: bus clock required for memory access + - description: bus clock required for GPU memory access + - properties: + clock-names: + items: + - const: iface-mm + - const: iface-smmu + - const: bus-mm + - const: bus-smmu + clocks: + items: + - description: interface clock required to access mnoc's registers + through the TCU's programming interface. + - description: interface clock required to access smmu's registers + through the TCU's programming interface. + - description: bus clock required for downstream bus access + - description: bus clock required for the smmu ptw + + - if: + properties: + compatible: + contains: + enum: + - qcom,msm8996-smmu-v2 + - qcom,sc7180-smmu-v2 + - qcom,sdm845-smmu-v2 + then: + properties: + clock-names: + items: + - const: bus + - const: iface + + clocks: + items: + - description: bus clock required for downstream bus access and for + the smmu ptw + - description: interface clock required to access smmu's registers + through the TCU's programming interface. + + - if: + properties: + compatible: + contains: + enum: + - qcom,sa8775p-smmu-500 + - qcom,sc7280-smmu-500 + - qcom,sc8280xp-smmu-500 + then: + properties: + clock-names: + items: + - const: gcc_gpu_memnoc_gfx_clk + - const: gcc_gpu_snoc_dvm_gfx_clk + - const: gpu_cc_ahb_clk + - const: gpu_cc_hlos1_vote_gpu_smmu_clk + - const: gpu_cc_cx_gmu_clk + - const: gpu_cc_hub_cx_int_clk + - const: gpu_cc_hub_aon_clk + + clocks: + items: + - description: GPU memnoc_gfx clock + - description: GPU snoc_dvm_gfx clock + - description: GPU ahb clock + - description: GPU hlos1_vote_GPU smmu clock + - description: GPU cx_gmu clock + - description: GPU hub_cx_int clock + - description: GPU hub_aon clock + + - if: + properties: + compatible: + contains: + enum: + - qcom,sm6350-smmu-v2 + - qcom,sm7150-smmu-v2 + - qcom,sm8150-smmu-500 + - qcom,sm8250-smmu-500 + then: + properties: + clock-names: + items: + - const: ahb + - const: bus + - const: iface + + clocks: + items: + - description: bus clock required for AHB bus access + - description: bus clock required for downstream bus access and for + the smmu ptw + - description: interface clock required to access smmu's registers + through the TCU's programming interface. + + - if: + properties: + compatible: + items: + - enum: + - qcom,sm8350-smmu-500 + - const: qcom,adreno-smmu + - const: qcom,smmu-500 + - const: arm,mmu-500 + then: + properties: + clock-names: + items: + - const: bus + - const: iface + - const: ahb + - const: hlos1_vote_gpu_smmu + - const: cx_gmu + - const: hub_cx_int + - const: hub_aon + clocks: + minItems: 7 + maxItems: 7 + + - if: + properties: + compatible: + items: + - enum: + - qcom,qcm2290-smmu-500 + - qcom,sm6115-smmu-500 + - qcom,sm6125-smmu-500 + - const: qcom,adreno-smmu + - const: qcom,smmu-500 + - const: arm,mmu-500 + then: + properties: + clock-names: + items: + - const: mem + - const: hlos + - const: iface + + clocks: + items: + - description: GPU memory bus clock + - description: Voter clock required for HLOS SMMU access + - description: Interface clock required for register access + + - if: + properties: + compatible: + items: + - const: qcom,sm8450-smmu-500 + - const: qcom,adreno-smmu + - const: qcom,smmu-500 + - const: arm,mmu-500 + + then: + properties: + clock-names: + items: + - const: gmu + - const: hub + - const: hlos + - const: bus + - const: iface + - const: ahb + + clocks: + items: + - description: GMU clock + - description: GPU HUB clock + - description: HLOS vote clock + - description: GPU memory bus clock + - description: GPU SNoC bus clock + - description: GPU AHB clock + + - if: + properties: + compatible: + items: + - enum: + - qcom,sm8550-smmu-500 + - qcom,sm8650-smmu-500 + - const: qcom,adreno-smmu + - const: qcom,smmu-500 + - const: arm,mmu-500 + then: + properties: + clock-names: + items: + - const: hlos + - const: bus + - const: iface + - const: ahb + + clocks: + items: + - description: HLOS vote clock + - description: GPU memory bus clock + - description: GPU SNoC bus clock + - description: GPU AHB clock + + # Disallow clocks for all other platforms with specific compatibles + - if: + properties: + compatible: + contains: + enum: + - cavium,smmu-v2 + - marvell,ap806-smmu-500 + - nvidia,smmu-500 + - qcom,qdu1000-smmu-500 + - qcom,sc7180-smmu-500 + - qcom,sc8180x-smmu-500 + - qcom,sdm670-smmu-500 + - qcom,sdm845-smmu-500 + - qcom,sdx55-smmu-500 + - qcom,sdx65-smmu-500 + - qcom,sm6350-smmu-500 + - qcom,sm6375-smmu-500 + - qcom,x1e80100-smmu-500 + then: + properties: + clock-names: false + clocks: false + + - if: + properties: + compatible: + contains: + const: qcom,sm6375-smmu-500 + then: + properties: + power-domains: + items: + - description: SNoC MMU TBU RT GDSC + - description: SNoC MMU TBU NRT GDSC + - description: SNoC TURING MMU TBU0 GDSC + + required: + - power-domains + else: + properties: + power-domains: + maxItems: 1 + examples: - |+ /* SMMU with stream matching or stream indexing */ diff --git a/dts/Bindings/iommu/iommu.txt b/dts/Bindings/iommu/iommu.txt index 3c36334e4f..26ba9e530f 100644 --- a/dts/Bindings/iommu/iommu.txt +++ b/dts/Bindings/iommu/iommu.txt @@ -92,6 +92,24 @@ Optional properties: tagging DMA transactions with an address space identifier. By default, this is 0, which means that the device only has one address space. +- dma-can-stall: When present, the master can wait for a transaction to + complete for an indefinite amount of time. Upon translation fault some + IOMMUs, instead of aborting the translation immediately, may first + notify the driver and keep the transaction in flight. This allows the OS + to inspect the fault and, for example, make physical pages resident + before updating the mappings and completing the transaction. Such IOMMU + accepts a limited number of simultaneous stalled transactions before + having to either put back-pressure on the master, or abort new faulting + transactions. + + Firmware has to opt-in stalling, because most buses and masters don't + support it. In particular it isn't compatible with PCI, where + transactions have to complete before a time limit. More generally it + won't work in systems and masters that haven't been designed for + stalling. For example the OS, in order to handle a stalled transaction, + may attempt to retrieve pages from secondary storage in a stalled + domain, leading to a deadlock. + Notes: ====== diff --git a/dts/Bindings/iommu/mediatek,iommu.txt b/dts/Bindings/iommu/mediatek,iommu.txt deleted file mode 100644 index ce59a505f5..0000000000 --- a/dts/Bindings/iommu/mediatek,iommu.txt +++ /dev/null @@ -1,101 +0,0 @@ -* Mediatek IOMMU Architecture Implementation - - Some Mediatek SOCs contain a Multimedia Memory Management Unit (M4U), and -this M4U have two generations of HW architecture. Generation one uses flat -pagetable, and only supports 4K size page mapping. Generation two uses the -ARM Short-Descriptor translation table format for address translation. - - About the M4U Hardware Block Diagram, please check below: - - EMI (External Memory Interface) - | - m4u (Multimedia Memory Management Unit) - | - +--------+ - | | - gals0-rx gals1-rx (Global Async Local Sync rx) - | | - | | - gals0-tx gals1-tx (Global Async Local Sync tx) - | | Some SoCs may have GALS. - +--------+ - | - SMI Common(Smart Multimedia Interface Common) - | - +----------------+------- - | | - | gals-rx There may be GALS in some larbs. - | | - | | - | gals-tx - | | - SMI larb0 SMI larb1 ... SoCs have several SMI local arbiter(larb). - (display) (vdec) - | | - | | - +-----+-----+ +----+----+ - | | | | | | - | | |... | | | ... There are different ports in each larb. - | | | | | | -OVL0 RDMA0 WDMA0 MC PP VLD - - As above, The Multimedia HW will go through SMI and M4U while it -access EMI. SMI is a bridge between m4u and the Multimedia HW. It contain -smi local arbiter and smi common. It will control whether the Multimedia -HW should go though the m4u for translation or bypass it and talk -directly with EMI. And also SMI help control the power domain and clocks for -each local arbiter. - Normally we specify a local arbiter(larb) for each multimedia HW -like display, video decode, and camera. And there are different ports -in each larb. Take a example, There are many ports like MC, PP, VLD in the -video decode local arbiter, all these ports are according to the video HW. - In some SoCs, there may be a GALS(Global Async Local Sync) module between -smi-common and m4u, and additional GALS module between smi-larb and -smi-common. GALS can been seen as a "asynchronous fifo" which could help -synchronize for the modules in different clock frequency. - -Required properties: -- compatible : must be one of the following string: - "mediatek,mt2701-m4u" for mt2701 which uses generation one m4u HW. - "mediatek,mt2712-m4u" for mt2712 which uses generation two m4u HW. - "mediatek,mt7623-m4u", "mediatek,mt2701-m4u" for mt7623 which uses - generation one m4u HW. - "mediatek,mt8173-m4u" for mt8173 which uses generation two m4u HW. - "mediatek,mt8183-m4u" for mt8183 which uses generation two m4u HW. -- reg : m4u register base and size. -- interrupts : the interrupt of m4u. -- clocks : must contain one entry for each clock-names. -- clock-names : Only 1 optional clock: - - "bclk": the block clock of m4u. - Here is the list which require this "bclk": - - mt2701, mt2712, mt7623 and mt8173. - Note that m4u use the EMI clock which always has been enabled before kernel - if there is no this "bclk". -- mediatek,larbs : List of phandle to the local arbiters in the current Socs. - Refer to bindings/memory-controllers/mediatek,smi-larb.txt. It must sort - according to the local arbiter index, like larb0, larb1, larb2... -- iommu-cells : must be 1. This is the mtk_m4u_id according to the HW. - Specifies the mtk_m4u_id as defined in - dt-binding/memory/mt2701-larb-port.h for mt2701, mt7623 - dt-binding/memory/mt2712-larb-port.h for mt2712, - dt-binding/memory/mt8173-larb-port.h for mt8173, and - dt-binding/memory/mt8183-larb-port.h for mt8183. - -Example: - iommu: iommu@10205000 { - compatible = "mediatek,mt8173-m4u"; - reg = <0 0x10205000 0 0x1000>; - interrupts = <GIC_SPI 139 IRQ_TYPE_LEVEL_LOW>; - clocks = <&infracfg CLK_INFRA_M4U>; - clock-names = "bclk"; - mediatek,larbs = <&larb0 &larb1 &larb2 &larb3 &larb4 &larb5>; - #iommu-cells = <1>; - }; - -Example for a client device: - display { - compatible = "mediatek,mt8173-disp"; - iommus = <&iommu M4U_PORT_DISP_OVL0>, - <&iommu M4U_PORT_DISP_RDMA0>; - ... - }; diff --git a/dts/Bindings/iommu/mediatek,iommu.yaml b/dts/Bindings/iommu/mediatek,iommu.yaml new file mode 100644 index 0000000000..ea6b0f5f24 --- /dev/null +++ b/dts/Bindings/iommu/mediatek,iommu.yaml @@ -0,0 +1,230 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/mediatek,iommu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek IOMMU Architecture Implementation + +maintainers: + - Yong Wu <yong.wu@mediatek.com> + +description: |+ + Some MediaTek SOCs contain a Multimedia Memory Management Unit (M4U), and + this M4U have two generations of HW architecture. Generation one uses flat + pagetable, and only supports 4K size page mapping. Generation two uses the + ARM Short-Descriptor translation table format for address translation. + + About the M4U Hardware Block Diagram, please check below: + + EMI (External Memory Interface) + | + m4u (Multimedia Memory Management Unit) + | + +--------+ + | | + gals0-rx gals1-rx (Global Async Local Sync rx) + | | + | | + gals0-tx gals1-tx (Global Async Local Sync tx) + | | Some SoCs may have GALS. + +--------+ + | + SMI Common(Smart Multimedia Interface Common) + | + +----------------+------- + | | + | gals-rx There may be GALS in some larbs. + | | + | | + | gals-tx + | | + SMI larb0 SMI larb1 ... SoCs have several SMI local arbiter(larb). + (display) (vdec) + | | + | | + +-----+-----+ +----+----+ + | | | | | | + | | |... | | | ... There are different ports in each larb. + | | | | | | + OVL0 RDMA0 WDMA0 MC PP VLD + + As above, The Multimedia HW will go through SMI and M4U while it + access EMI. SMI is a bridge between m4u and the Multimedia HW. It contain + smi local arbiter and smi common. It will control whether the Multimedia + HW should go though the m4u for translation or bypass it and talk + directly with EMI. And also SMI help control the power domain and clocks for + each local arbiter. + + Normally we specify a local arbiter(larb) for each multimedia HW + like display, video decode, and camera. And there are different ports + in each larb. Take a example, There are many ports like MC, PP, VLD in the + video decode local arbiter, all these ports are according to the video HW. + + In some SoCs, there may be a GALS(Global Async Local Sync) module between + smi-common and m4u, and additional GALS module between smi-larb and + smi-common. GALS can been seen as a "asynchronous fifo" which could help + synchronize for the modules in different clock frequency. + +properties: + compatible: + oneOf: + - enum: + - mediatek,mt2701-m4u # generation one + - mediatek,mt2712-m4u # generation two + - mediatek,mt6779-m4u # generation two + - mediatek,mt6795-m4u # generation two + - mediatek,mt8167-m4u # generation two + - mediatek,mt8173-m4u # generation two + - mediatek,mt8183-m4u # generation two + - mediatek,mt8186-iommu-mm # generation two + - mediatek,mt8188-iommu-vdo # generation two + - mediatek,mt8188-iommu-vpp # generation two + - mediatek,mt8188-iommu-infra # generation two + - mediatek,mt8192-m4u # generation two + - mediatek,mt8195-iommu-vdo # generation two + - mediatek,mt8195-iommu-vpp # generation two + - mediatek,mt8195-iommu-infra # generation two + - mediatek,mt8365-m4u # generation two + + - description: mt7623 generation one + items: + - const: mediatek,mt7623-m4u + - const: mediatek,mt2701-m4u + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: bclk is the block clock. + + clock-names: + items: + - const: bclk + + mediatek,infracfg: + $ref: /schemas/types.yaml#/definitions/phandle + description: The phandle to the mediatek infracfg syscon + + mediatek,larbs: + $ref: /schemas/types.yaml#/definitions/phandle-array + minItems: 1 + maxItems: 32 + items: + maxItems: 1 + description: | + List of phandle to the local arbiters in the current Socs. + Refer to bindings/memory-controllers/mediatek,smi-larb.yaml. It must sort + according to the local arbiter index, like larb0, larb1, larb2... + + '#iommu-cells': + const: 1 + description: | + This is the mtk_m4u_id according to the HW. Specifies the mtk_m4u_id as + defined in + dt-binding/memory/mediatek,mt8188-memory-port.h for mt8188, + dt-binding/memory/mt2701-larb-port.h for mt2701 and mt7623, + dt-binding/memory/mt2712-larb-port.h for mt2712, + dt-binding/memory/mt6779-larb-port.h for mt6779, + dt-binding/memory/mt6795-larb-port.h for mt6795, + dt-binding/memory/mt8167-larb-port.h for mt8167, + dt-binding/memory/mt8173-larb-port.h for mt8173, + dt-binding/memory/mt8183-larb-port.h for mt8183, + dt-binding/memory/mt8186-memory-port.h for mt8186, + dt-binding/memory/mt8192-larb-port.h for mt8192. + dt-binding/memory/mt8195-memory-port.h for mt8195. + dt-binding/memory/mediatek,mt8365-larb-port.h for mt8365. + + power-domains: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - '#iommu-cells' + +allOf: + - if: + properties: + compatible: + contains: + enum: + - mediatek,mt2701-m4u + - mediatek,mt2712-m4u + - mediatek,mt6795-m4u + - mediatek,mt8173-m4u + - mediatek,mt8186-iommu-mm + - mediatek,mt8188-iommu-vdo + - mediatek,mt8188-iommu-vpp + - mediatek,mt8192-m4u + - mediatek,mt8195-iommu-vdo + - mediatek,mt8195-iommu-vpp + + then: + required: + - clocks + + - if: + properties: + compatible: + enum: + - mediatek,mt8186-iommu-mm + - mediatek,mt8188-iommu-vdo + - mediatek,mt8188-iommu-vpp + - mediatek,mt8192-m4u + - mediatek,mt8195-iommu-vdo + - mediatek,mt8195-iommu-vpp + + then: + required: + - power-domains + + - if: + properties: + compatible: + contains: + enum: + - mediatek,mt2712-m4u + - mediatek,mt6795-m4u + - mediatek,mt8173-m4u + + then: + required: + - mediatek,infracfg + + - if: # The IOMMUs don't have larbs. + not: + properties: + compatible: + contains: + enum: + - mediatek,mt8188-iommu-infra + - mediatek,mt8195-iommu-infra + + then: + required: + - mediatek,larbs + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/mt8173-clk.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + + iommu: iommu@10205000 { + compatible = "mediatek,mt8173-m4u"; + reg = <0x10205000 0x1000>; + interrupts = <GIC_SPI 139 IRQ_TYPE_LEVEL_LOW>; + clocks = <&infracfg CLK_INFRA_M4U>; + clock-names = "bclk"; + mediatek,infracfg = <&infracfg>; + mediatek,larbs = <&larb0>, <&larb1>, <&larb2>, + <&larb3>, <&larb4>, <&larb5>; + #iommu-cells = <1>; + }; diff --git a/dts/Bindings/iommu/qcom,iommu.txt b/dts/Bindings/iommu/qcom,iommu.txt deleted file mode 100644 index 059139abce..0000000000 --- a/dts/Bindings/iommu/qcom,iommu.txt +++ /dev/null @@ -1,121 +0,0 @@ -* QCOM IOMMU v1 Implementation - -Qualcomm "B" family devices which are not compatible with arm-smmu have -a similar looking IOMMU but without access to the global register space, -and optionally requiring additional configuration to route context irqs -to non-secure vs secure interrupt line. - -** Required properties: - -- compatible : Should be one of: - - "qcom,msm8916-iommu" - - Followed by "qcom,msm-iommu-v1". - -- clock-names : Should be a pair of "iface" (required for IOMMUs - register group access) and "bus" (required for - the IOMMUs underlying bus access). - -- clocks : Phandles for respective clocks described by - clock-names. - -- #address-cells : must be 1. - -- #size-cells : must be 1. - -- #iommu-cells : Must be 1. Index identifies the context-bank #. - -- ranges : Base address and size of the iommu context banks. - -- qcom,iommu-secure-id : secure-id. - -- List of sub-nodes, one per translation context bank. Each sub-node - has the following required properties: - - - compatible : Should be one of: - - "qcom,msm-iommu-v1-ns" : non-secure context bank - - "qcom,msm-iommu-v1-sec" : secure context bank - - reg : Base address and size of context bank within the iommu - - interrupts : The context fault irq. - -** Optional properties: - -- reg : Base address and size of the SMMU local base, should - be only specified if the iommu requires configuration - for routing of context bank irq's to secure vs non- - secure lines. (Ie. if the iommu contains secure - context banks) - - -** Examples: - - apps_iommu: iommu@1e20000 { - #address-cells = <1>; - #size-cells = <1>; - #iommu-cells = <1>; - compatible = "qcom,msm8916-iommu", "qcom,msm-iommu-v1"; - ranges = <0 0x1e20000 0x40000>; - reg = <0x1ef0000 0x3000>; - clocks = <&gcc GCC_SMMU_CFG_CLK>, - <&gcc GCC_APSS_TCU_CLK>; - clock-names = "iface", "bus"; - qcom,iommu-secure-id = <17>; - - // mdp_0: - iommu-ctx@4000 { - compatible = "qcom,msm-iommu-v1-ns"; - reg = <0x4000 0x1000>; - interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>; - }; - - // venus_ns: - iommu-ctx@5000 { - compatible = "qcom,msm-iommu-v1-sec"; - reg = <0x5000 0x1000>; - interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>; - }; - }; - - gpu_iommu: iommu@1f08000 { - #address-cells = <1>; - #size-cells = <1>; - #iommu-cells = <1>; - compatible = "qcom,msm8916-iommu", "qcom,msm-iommu-v1"; - ranges = <0 0x1f08000 0x10000>; - clocks = <&gcc GCC_SMMU_CFG_CLK>, - <&gcc GCC_GFX_TCU_CLK>; - clock-names = "iface", "bus"; - qcom,iommu-secure-id = <18>; - - // gfx3d_user: - iommu-ctx@1000 { - compatible = "qcom,msm-iommu-v1-ns"; - reg = <0x1000 0x1000>; - interrupts = <GIC_SPI 241 IRQ_TYPE_LEVEL_HIGH>; - }; - - // gfx3d_priv: - iommu-ctx@2000 { - compatible = "qcom,msm-iommu-v1-ns"; - reg = <0x2000 0x1000>; - interrupts = <GIC_SPI 242 IRQ_TYPE_LEVEL_HIGH>; - }; - }; - - ... - - venus: video-codec@1d00000 { - ... - iommus = <&apps_iommu 5>; - }; - - mdp: mdp@1a01000 { - ... - iommus = <&apps_iommu 4>; - }; - - gpu@1c00000 { - ... - iommus = <&gpu_iommu 1>, <&gpu_iommu 2>; - }; diff --git a/dts/Bindings/iommu/qcom,iommu.yaml b/dts/Bindings/iommu/qcom,iommu.yaml new file mode 100644 index 0000000000..a74eb899c3 --- /dev/null +++ b/dts/Bindings/iommu/qcom,iommu.yaml @@ -0,0 +1,125 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/qcom,iommu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Technologies legacy IOMMU implementations + +maintainers: + - Konrad Dybcio <konrad.dybcio@linaro.org> + +description: | + Qualcomm "B" family devices which are not compatible with arm-smmu have + a similar looking IOMMU, but without access to the global register space + and optionally requiring additional configuration to route context IRQs + to non-secure vs secure interrupt line. + +properties: + compatible: + oneOf: + - items: + - enum: + - qcom,msm8916-iommu + - qcom,msm8953-iommu + - const: qcom,msm-iommu-v1 + - items: + - enum: + - qcom,msm8976-iommu + - const: qcom,msm-iommu-v2 + + clocks: + items: + - description: Clock required for IOMMU register group access + - description: Clock required for underlying bus access + + clock-names: + items: + - const: iface + - const: bus + + power-domains: + maxItems: 1 + + reg: + maxItems: 1 + + ranges: true + + qcom,iommu-secure-id: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + The SCM secure ID of the IOMMU instance. + + '#address-cells': + const: 1 + + '#size-cells': + const: 1 + + '#iommu-cells': + const: 1 + +patternProperties: + "^iommu-ctx@[0-9a-f]+$": + type: object + additionalProperties: false + properties: + compatible: + enum: + - qcom,msm-iommu-v1-ns + - qcom,msm-iommu-v1-sec + - qcom,msm-iommu-v2-ns + - qcom,msm-iommu-v2-sec + + interrupts: + maxItems: 1 + + reg: + maxItems: 1 + + qcom,ctx-asid: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + The ASID number associated to the context bank. + + required: + - compatible + - interrupts + - reg + +required: + - compatible + - clocks + - clock-names + - ranges + - '#address-cells' + - '#size-cells' + - '#iommu-cells' + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/qcom,gcc-msm8916.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + + apps_iommu: iommu@1e20000 { + compatible = "qcom,msm8916-iommu", "qcom,msm-iommu-v1"; + reg = <0x01ef0000 0x3000>; + clocks = <&gcc GCC_SMMU_CFG_CLK>, + <&gcc GCC_APSS_TCU_CLK>; + clock-names = "iface", "bus"; + qcom,iommu-secure-id = <17>; + #address-cells = <1>; + #size-cells = <1>; + #iommu-cells = <1>; + ranges = <0 0x01e20000 0x40000>; + + /* mdp_0: */ + iommu-ctx@4000 { + compatible = "qcom,msm-iommu-v1-ns"; + reg = <0x4000 0x1000>; + interrupts = <GIC_SPI 70 IRQ_TYPE_LEVEL_HIGH>; + }; + }; diff --git a/dts/Bindings/iommu/renesas,ipmmu-vmsa.txt b/dts/Bindings/iommu/renesas,ipmmu-vmsa.txt deleted file mode 100644 index 020d6f226e..0000000000 --- a/dts/Bindings/iommu/renesas,ipmmu-vmsa.txt +++ /dev/null @@ -1,73 +0,0 @@ -* Renesas VMSA-Compatible IOMMU - -The IPMMU is an IOMMU implementation compatible with the ARM VMSA page tables. -It provides address translation for bus masters outside of the CPU, each -connected to the IPMMU through a port called micro-TLB. - - -Required Properties: - - - compatible: Must contain SoC-specific and generic entry below in case - the device is compatible with the R-Car Gen2 VMSA-compatible IPMMU. - - - "renesas,ipmmu-r8a73a4" for the R8A73A4 (R-Mobile APE6) IPMMU. - - "renesas,ipmmu-r8a7743" for the R8A7743 (RZ/G1M) IPMMU. - - "renesas,ipmmu-r8a7744" for the R8A7744 (RZ/G1N) IPMMU. - - "renesas,ipmmu-r8a7745" for the R8A7745 (RZ/G1E) IPMMU. - - "renesas,ipmmu-r8a774a1" for the R8A774A1 (RZ/G2M) IPMMU. - - "renesas,ipmmu-r8a774b1" for the R8A774B1 (RZ/G2N) IPMMU. - - "renesas,ipmmu-r8a774c0" for the R8A774C0 (RZ/G2E) IPMMU. - - "renesas,ipmmu-r8a7790" for the R8A7790 (R-Car H2) IPMMU. - - "renesas,ipmmu-r8a7791" for the R8A7791 (R-Car M2-W) IPMMU. - - "renesas,ipmmu-r8a7793" for the R8A7793 (R-Car M2-N) IPMMU. - - "renesas,ipmmu-r8a7794" for the R8A7794 (R-Car E2) IPMMU. - - "renesas,ipmmu-r8a7795" for the R8A7795 (R-Car H3) IPMMU. - - "renesas,ipmmu-r8a7796" for the R8A7796 (R-Car M3-W) IPMMU. - - "renesas,ipmmu-r8a77965" for the R8A77965 (R-Car M3-N) IPMMU. - - "renesas,ipmmu-r8a77970" for the R8A77970 (R-Car V3M) IPMMU. - - "renesas,ipmmu-r8a77980" for the R8A77980 (R-Car V3H) IPMMU. - - "renesas,ipmmu-r8a77990" for the R8A77990 (R-Car E3) IPMMU. - - "renesas,ipmmu-r8a77995" for the R8A77995 (R-Car D3) IPMMU. - - "renesas,ipmmu-vmsa" for generic R-Car Gen2 or RZ/G1 VMSA-compatible - IPMMU. - - - reg: Base address and size of the IPMMU registers. - - interrupts: Specifiers for the MMU fault interrupts. For instances that - support secure mode two interrupts must be specified, for non-secure and - secure mode, in that order. For instances that don't support secure mode a - single interrupt must be specified. Not required for cache IPMMUs. - - - #iommu-cells: Must be 1. - -Optional properties: - - - renesas,ipmmu-main: reference to the main IPMMU instance in two cells. - The first cell is a phandle to the main IPMMU and the second cell is - the interrupt bit number associated with the particular cache IPMMU device. - The interrupt bit number needs to match the main IPMMU IMSSTR register. - Only used by cache IPMMU instances. - - -Each bus master connected to an IPMMU must reference the IPMMU in its device -node with the following property: - - - iommus: A reference to the IPMMU in two cells. The first cell is a phandle - to the IPMMU and the second cell the number of the micro-TLB that the - device is connected to. - - -Example: R8A7791 IPMMU-MX and VSP1-D0 bus master - - ipmmu_mx: mmu@fe951000 { - compatible = "renasas,ipmmu-r8a7791", "renasas,ipmmu-vmsa"; - reg = <0 0xfe951000 0 0x1000>; - interrupts = <0 222 IRQ_TYPE_LEVEL_HIGH>, - <0 221 IRQ_TYPE_LEVEL_HIGH>; - #iommu-cells = <1>; - }; - - vsp@fe928000 { - ... - iommus = <&ipmmu_mx 13>; - ... - }; diff --git a/dts/Bindings/iommu/renesas,ipmmu-vmsa.yaml b/dts/Bindings/iommu/renesas,ipmmu-vmsa.yaml new file mode 100644 index 0000000000..be90f68c11 --- /dev/null +++ b/dts/Bindings/iommu/renesas,ipmmu-vmsa.yaml @@ -0,0 +1,140 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/renesas,ipmmu-vmsa.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas VMSA-Compatible IOMMU + +maintainers: + - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> + +description: + The IPMMU is an IOMMU implementation compatible with the ARM VMSA page tables. + It provides address translation for bus masters outside of the CPU, each + connected to the IPMMU through a port called micro-TLB. + +properties: + compatible: + oneOf: + - items: + - enum: + - renesas,ipmmu-r8a73a4 # R-Mobile APE6 + - renesas,ipmmu-r8a7742 # RZ/G1H + - renesas,ipmmu-r8a7743 # RZ/G1M + - renesas,ipmmu-r8a7744 # RZ/G1N + - renesas,ipmmu-r8a7745 # RZ/G1E + - renesas,ipmmu-r8a7790 # R-Car H2 + - renesas,ipmmu-r8a7791 # R-Car M2-W + - renesas,ipmmu-r8a7793 # R-Car M2-N + - renesas,ipmmu-r8a7794 # R-Car E2 + - const: renesas,ipmmu-vmsa # R-Mobile APE6 or R-Car Gen2 or RZ/G1 + + - items: + - enum: + - renesas,ipmmu-r8a774a1 # RZ/G2M + - renesas,ipmmu-r8a774b1 # RZ/G2N + - renesas,ipmmu-r8a774c0 # RZ/G2E + - renesas,ipmmu-r8a774e1 # RZ/G2H + - renesas,ipmmu-r8a7795 # R-Car H3 + - renesas,ipmmu-r8a7796 # R-Car M3-W + - renesas,ipmmu-r8a77961 # R-Car M3-W+ + - renesas,ipmmu-r8a77965 # R-Car M3-N + - renesas,ipmmu-r8a77970 # R-Car V3M + - renesas,ipmmu-r8a77980 # R-Car V3H + - renesas,ipmmu-r8a77990 # R-Car E3 + - renesas,ipmmu-r8a77995 # R-Car D3 + + - items: + - enum: + - renesas,ipmmu-r8a779a0 # R-Car V3U + - renesas,ipmmu-r8a779f0 # R-Car S4-8 + - renesas,ipmmu-r8a779g0 # R-Car V4H + - const: renesas,rcar-gen4-ipmmu-vmsa # R-Car Gen4 + + reg: + maxItems: 1 + + interrupts: + minItems: 1 + description: + Specifiers for the MMU fault interrupts. Not required for cache IPMMUs. + items: + - description: non-secure mode + - description: secure mode if supported + + '#iommu-cells': + const: 1 + description: + The number of the micro-TLB that the device is connected to. + + power-domains: + maxItems: 1 + + renesas,ipmmu-main: + $ref: /schemas/types.yaml#/definitions/phandle-array + items: + - minItems: 1 + items: + - description: phandle to main IPMMU + - description: + The interrupt bit number associated with the particular cache + IPMMU device. If present, the interrupt bit number needs to match + the main IPMMU IMSSTR register. Only used by cache IPMMU + instances. + description: + Reference to the main IPMMU. + +required: + - compatible + - reg + - '#iommu-cells' + +oneOf: + - required: + - interrupts + - required: + - renesas,ipmmu-main + +additionalProperties: false + +allOf: + - if: + properties: + compatible: + not: + contains: + const: renesas,ipmmu-vmsa + then: + required: + - power-domains + + - if: + properties: + compatible: + contains: + const: renesas,rcar-gen4-ipmmu-vmsa + then: + properties: + renesas,ipmmu-main: + items: + - maxItems: 1 + else: + properties: + renesas,ipmmu-main: + items: + - minItems: 2 + +examples: + - | + #include <dt-bindings/clock/r8a7791-cpg-mssr.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/power/r8a7791-sysc.h> + + ipmmu_mx: iommu@fe951000 { + compatible = "renesas,ipmmu-r8a7791", "renesas,ipmmu-vmsa"; + reg = <0xfe951000 0x1000>; + interrupts = <GIC_SPI 222 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 221 IRQ_TYPE_LEVEL_HIGH>; + #iommu-cells = <1>; + }; diff --git a/dts/Bindings/iommu/rockchip,iommu.txt b/dts/Bindings/iommu/rockchip,iommu.txt deleted file mode 100644 index 6ecefea1c6..0000000000 --- a/dts/Bindings/iommu/rockchip,iommu.txt +++ /dev/null @@ -1,38 +0,0 @@ -Rockchip IOMMU -============== - -A Rockchip DRM iommu translates io virtual addresses to physical addresses for -its master device. Each slave device is bound to a single master device, and -shares its clocks, power domain and irq. - -Required properties: -- compatible : Should be "rockchip,iommu" -- reg : Address space for the configuration registers -- interrupts : Interrupt specifier for the IOMMU instance -- interrupt-names : Interrupt name for the IOMMU instance -- #iommu-cells : Should be <0>. This indicates the iommu is a - "single-master" device, and needs no additional information - to associate with its master device. See: - Documentation/devicetree/bindings/iommu/iommu.txt -- clocks : A list of clocks required for the IOMMU to be accessible by - the host CPU. -- clock-names : Should contain the following: - "iface" - Main peripheral bus clock (PCLK/HCL) (required) - "aclk" - AXI bus clock (required) - -Optional properties: -- rockchip,disable-mmu-reset : Don't use the mmu reset operation. - Some mmu instances may produce unexpected results - when the reset operation is used. - -Example: - - vopl_mmu: iommu@ff940300 { - compatible = "rockchip,iommu"; - reg = <0xff940300 0x100>; - interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>; - interrupt-names = "vopl_mmu"; - clocks = <&cru ACLK_VOP1>, <&cru HCLK_VOP1>; - clock-names = "aclk", "iface"; - #iommu-cells = <0>; - }; diff --git a/dts/Bindings/iommu/rockchip,iommu.yaml b/dts/Bindings/iommu/rockchip,iommu.yaml new file mode 100644 index 0000000000..621dde0e45 --- /dev/null +++ b/dts/Bindings/iommu/rockchip,iommu.yaml @@ -0,0 +1,88 @@ +# SPDX-License-Identifier: GPL-2.0-only +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/rockchip,iommu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Rockchip IOMMU + +maintainers: + - Heiko Stuebner <heiko@sntech.de> + +description: |+ + A Rockchip DRM iommu translates io virtual addresses to physical addresses for + its master device. Each slave device is bound to a single master device and + shares its clocks, power domain and irq. + + For information on assigning IOMMU controller to its peripheral devices, + see generic IOMMU bindings. + +properties: + compatible: + oneOf: + - enum: + - rockchip,iommu + - rockchip,rk3568-iommu + - items: + - enum: + - rockchip,rk3588-iommu + - const: rockchip,rk3568-iommu + + reg: + items: + - description: configuration registers for MMU instance 0 + - description: configuration registers for MMU instance 1 + minItems: 1 + + interrupts: + items: + - description: interruption for MMU instance 0 + - description: interruption for MMU instance 1 + minItems: 1 + + clocks: + items: + - description: Core clock + - description: Interface clock + + clock-names: + items: + - const: aclk + - const: iface + + "#iommu-cells": + const: 0 + + power-domains: + maxItems: 1 + + rockchip,disable-mmu-reset: + $ref: /schemas/types.yaml#/definitions/flag + description: | + Do not use the mmu reset operation. + Some mmu instances may produce unexpected results + when the reset operation is used. + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - "#iommu-cells" + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/rk3399-cru.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + + vopl_mmu: iommu@ff940300 { + compatible = "rockchip,iommu"; + reg = <0xff940300 0x100>; + interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cru ACLK_VOP1>, <&cru HCLK_VOP1>; + clock-names = "aclk", "iface"; + #iommu-cells = <0>; + }; diff --git a/dts/Bindings/iommu/samsung,sysmmu.yaml b/dts/Bindings/iommu/samsung,sysmmu.yaml index 7cdd3aaa2b..672a0beea6 100644 --- a/dts/Bindings/iommu/samsung,sysmmu.yaml +++ b/dts/Bindings/iommu/samsung,sysmmu.yaml @@ -54,13 +54,13 @@ properties: clock-names: oneOf: - items: - - const: sysmmu + - const: sysmmu - items: - - const: sysmmu - - const: master + - const: sysmmu + - const: master - items: - - const: aclk - - const: pclk + - const: aclk + - const: pclk "#iommu-cells": const: 0 @@ -80,20 +80,12 @@ required: - clock-names - "#iommu-cells" +additionalProperties: false + examples: - | #include <dt-bindings/clock/exynos5250.h> - gsc_0: scaler@13e00000 { - compatible = "samsung,exynos5-gsc"; - reg = <0x13e00000 0x1000>; - interrupts = <0 85 0>; - power-domains = <&pd_gsc>; - clocks = <&clock CLK_GSCL0>; - clock-names = "gscl"; - iommus = <&sysmmu_gsc0>; - }; - sysmmu_gsc0: iommu@13e80000 { compatible = "samsung,exynos-sysmmu"; reg = <0x13E80000 0x1000>; @@ -105,4 +97,3 @@ examples: power-domains = <&pd_gsc>; #iommu-cells = <0>; }; - diff --git a/dts/Bindings/iommu/sprd,iommu.yaml b/dts/Bindings/iommu/sprd,iommu.yaml new file mode 100644 index 0000000000..7003e12f55 --- /dev/null +++ b/dts/Bindings/iommu/sprd,iommu.yaml @@ -0,0 +1,57 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright 2020 Unisoc Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/sprd,iommu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Unisoc IOMMU and Multi-media MMU + +maintainers: + - Chunyan Zhang <zhang.lyra@gmail.com> + +properties: + compatible: + enum: + - sprd,iommu-v1 + + "#iommu-cells": + const: 0 + description: + Unisoc IOMMUs are all single-master IOMMU devices, therefore no + additional information needs to associate with its master device. + Please refer to the generic bindings document for more details, + Documentation/devicetree/bindings/iommu/iommu.txt + + reg: + maxItems: 1 + + clocks: + description: + Reference to a gate clock phandle, since access to some of IOMMUs are + controlled by gate clock, but this is not required. + +required: + - compatible + - reg + - "#iommu-cells" + +additionalProperties: false + +examples: + - | + iommu_disp: iommu@63000800 { + compatible = "sprd,iommu-v1"; + reg = <0x63000800 0x80>; + #iommu-cells = <0>; + }; + + - | + iommu_jpg: iommu@62300300 { + compatible = "sprd,iommu-v1"; + reg = <0x62300300 0x80>; + #iommu-cells = <0>; + clocks = <&mm_gate 1>; + }; + +... diff --git a/dts/Bindings/iommu/xen,grant-dma.yaml b/dts/Bindings/iommu/xen,grant-dma.yaml new file mode 100644 index 0000000000..3528b81daa --- /dev/null +++ b/dts/Bindings/iommu/xen,grant-dma.yaml @@ -0,0 +1,39 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/xen,grant-dma.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Xen specific IOMMU for virtualized devices (e.g. virtio) + +maintainers: + - Stefano Stabellini <sstabellini@kernel.org> + +description: + The Xen IOMMU represents the Xen grant table interface. Grant mappings + are to be used with devices connected to the Xen IOMMU using the "iommus" + property, which also specifies the ID of the backend domain. + The binding is required to restrict memory access using Xen grant mappings. + +properties: + compatible: + const: xen,grant-dma + + '#iommu-cells': + const: 1 + description: + The single cell is the domid (domain ID) of the domain where the backend + is running. + +required: + - compatible + - "#iommu-cells" + +additionalProperties: false + +examples: + - | + iommu { + compatible = "xen,grant-dma"; + #iommu-cells = <1>; + }; |