IOMMU Updates for Linux v4.4

This time including:
 
 	* A new IOMMU driver for s390 pci devices
 
 	* Common dma-ops support based on iommu-api for ARM64. The plan is to
 	  use this as a basis for ARM32 and hopefully other architectures as
 	  well in the future.
 
 	* MSI support for ARM-SMMUv3
 
 	* Cleanups and dead code removal in the AMD IOMMU driver
 
 	* Better RMRR handling for the Intel VT-d driver
 
 	* Various other cleanups and small fixes
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQIcBAABAgAGBQJWOz7hAAoJECvwRC2XARrjbvYQALwtITTA5iTm0y/ApwNMxI7n
 pZpjZVPoBPNsGBc4t/MT8pVhUSdmpBOljbV4Y4CayL1mSSB6Bl2gooZjd66m7Z81
 qMJYEVWhFQqVsIKkCSNOgaO7W5y+xt3rTgqN6vCu86/CCDfKrTPP/+CRl1T/z9bo
 1J8ioM3KnZG9KzG8JuXYFg5wwbKToaBh6swSmj+O4U9hru7zV/ILP7ikcc9pyMji
 12WbzCqchRORsJZD65xMRYAqRaPNN/3IlDejs00TOFhY3qpWgEgFUucyeRJBJ/+q
 K4U8T5vZsnr1a04l7/BeYbLmP7y/9Qv0N0xMGtTyoy/w/BieGqRWu4hHhqf/44NO
 EhCSXcEThMNCGTjP2VWC4dnQ/s7Y8OmSW9nCreUcFVxHoE5LfDoh8RngA2fpeNuS
 ixb3OwP+YXHN9Ck+1BQqQCeBznsPTLuDxlhRjCJsWntIfMSkXebOkz83YxyZ9b0Q
 gFvptfuknU7cotUwWa3dg8RiUB8kNlKJyEEByaVpWEbEOabnONKEMkstvuBx6Ots
 kA63wbe7QcPgbUYuq7g0nijDw6E2aEtf0nx2Xx4ZDL932qjg/xUkiBpmbDXHw4Gu
 nimNXVQtbCzF74SyTvxEtupiijOTm5eHtoKtg0mYnqPZ+V9eOwEvW8IHaFFf8XHD
 SecikoTtH1Q4RVtqOcAQ
 =jLlB
 -----END PGP SIGNATURE-----

Merge tag 'iommu-updates-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull iommu updates from Joerg Roedel:
 "This time including:

   - A new IOMMU driver for s390 pci devices

   - Common dma-ops support based on iommu-api for ARM64.  The plan is
     to use this as a basis for ARM32 and hopefully other architectures
     as well in the future.

   - MSI support for ARM-SMMUv3

   - Cleanups and dead code removal in the AMD IOMMU driver

   - Better RMRR handling for the Intel VT-d driver

   - Various other cleanups and small fixes"

* tag 'iommu-updates-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (41 commits)
  iommu/vt-d: Fix return value check of parse_ioapics_under_ir()
  iommu/vt-d: Propagate error-value from ir_parse_ioapic_hpet_scope()
  iommu/vt-d: Adjust the return value of the parse_ioapics_under_ir
  iommu: Move default domain allocation to iommu_group_get_for_dev()
  iommu: Remove is_pci_dev() fall-back from iommu_group_get_for_dev
  iommu/arm-smmu: Switch to device_group call-back
  iommu/fsl: Convert to device_group call-back
  iommu: Add device_group call-back to x86 iommu drivers
  iommu: Add generic_device_group() function
  iommu: Export and rename iommu_group_get_for_pci_dev()
  iommu: Revive device_group iommu-ops call-back
  iommu/amd: Remove find_last_devid_on_pci()
  iommu/amd: Remove first/last_device handling
  iommu/amd: Initialize amd_iommu_last_bdf for DEV_ALL
  iommu/amd: Cleanup buffer allocation
  iommu/amd: Remove cmd_buf_size and evt_buf_size from struct amd_iommu
  iommu/amd: Align DTE flag definitions
  iommu/amd: Remove old alias handling code
  iommu/amd: Set alias DTE in do_attach/do_detach
  iommu/amd: WARN when __[attach|detach]_device are called with irqs enabled
  ...

Documentation/devicetree/bindings/iommu/arm,smmu-v3.txt

@@ -36,5 +36,24 @@ the PCIe specification.
                       NOTE: this only applies to the SMMU itself, not
                       masters connected upstream of the SMMU.
 
+- msi-parent        : See the generic MSI binding described in
+                        devicetree/bindings/interrupt-controller/msi.txt
+                      for a description of the msi-parent property.
+
 - hisilicon,broken-prefetch-cmd
                     : Avoid sending CMD_PREFETCH_* commands to the SMMU.
+
+** Example
+
+        smmu@2b400000 {
+                compatible = "arm,smmu-v3";
+                reg = <0x0 0x2b400000 0x0 0x20000>;
+                interrupts = <GIC_SPI 74 IRQ_TYPE_EDGE_RISING>,
+                             <GIC_SPI 75 IRQ_TYPE_EDGE_RISING>,
+                             <GIC_SPI 77 IRQ_TYPE_EDGE_RISING>,
+                             <GIC_SPI 79 IRQ_TYPE_EDGE_RISING>;
+                interrupt-names = "eventq", "priq", "cmdq-sync", "gerror";
+                dma-coherent;
+                #iommu-cells = <0>;
+                msi-parent = <&its 0xff0000>;
+        };

Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt

@@ -4,6 +4,7 @@ Required properties:
 - compatible : Should be one of,
 		"ti,omap2-iommu" for OMAP2/OMAP3 IOMMU instances
 		"ti,omap4-iommu" for OMAP4/OMAP5 IOMMU instances
+		"ti,dra7-dsp-iommu" for DRA7xx DSP IOMMU instances
 		"ti,dra7-iommu" for DRA7xx IOMMU instances
 - ti,hwmods  : Name of the hwmod associated with the IOMMU instance
 - reg        : Address space for the configuration registers
@@ -19,6 +20,13 @@ Optional properties:
                     Should be either 8 or 32 (default: 32)
 - ti,iommu-bus-err-back : Indicates the IOMMU instance supports throwing
 		          back a bus error response on MMU faults.
+- ti,syscon-mmuconfig : Should be a pair of the phandle to the DSP_SYSTEM
+                        syscon node that contains the additional control
+                        register for enabling the MMU, and the MMU instance
+                        number (0-indexed) within the sub-system. This property
+                        is required for DSP IOMMU instances on DRA7xx SoCs. The
+                        instance number should be 0 for DSP MDMA MMUs and 1 for
+                        DSP EDMA MMUs.
 
 Example:
 	/* OMAP3 ISP MMU */
@@ -30,3 +38,22 @@ Example:
 		ti,hwmods = "mmu_isp";
 		ti,#tlb-entries = <8>;
 	};
+
+	/* DRA74x DSP2 MMUs */
+	mmu0_dsp2: mmu@41501000 {
+		compatible = "ti,dra7-dsp-iommu";
+		reg = <0x41501000 0x100>;
+		interrupts = <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>;
+		ti,hwmods = "mmu0_dsp2";
+		#iommu-cells = <0>;
+		ti,syscon-mmuconfig = <&dsp2_system 0x0>;
+	};
+
+	mmu1_dsp2: mmu@41502000 {
+		compatible = "ti,dra7-dsp-iommu";
+		reg = <0x41502000 0x100>;
+		interrupts = <GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>;
+		ti,hwmods = "mmu1_dsp2";
+		#iommu-cells = <0>;
+		ti,syscon-mmuconfig = <&dsp2_system 0x1>;
+	};