Merge tag 'iommu-updates-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull iommu updates from Joerg Roedel:

 - Consolidate iommu_map/unmap functions.

   There have been blocking and atomic variants so far, but that was
   problematic as this approach does not scale with required new
   variants which just differ in the GFP flags used. So Jason
   consolidated this back into single functions that take a GFP
   parameter.

 - Retire the detach_dev() call-back in iommu_ops

 - Arm SMMU updates from Will:
     - Device-tree binding updates:
         - Cater for three power domains on SM6375
         - Document existing compatible strings for Qualcomm SoCs
         - Tighten up clocks description for platform-specific
           compatible strings
     - Enable Qualcomm workarounds for some additional platforms that
       need them

 - Intel VT-d updates from Lu Baolu:
     - Add Intel IOMMU performance monitoring support
     - Set No Execute Enable bit in PASID table entry
     - Two performance optimizations
     - Fix PASID directory pointer coherency
     - Fix missed rollbacks in error path
     - Cleanups

 - Apple t8110 DART support

 - Exynos IOMMU:
     - Implement better fault handling
     - Error handling fixes

 - Renesas IPMMU:
     - Add device tree bindings for r8a779g0

 - AMD IOMMU:
     - Various fixes for handling on SNP-enabled systems and
       handling of faults with unknown request-ids
     - Cleanups and other small fixes

 - Various other smaller fixes and cleanups

* tag 'iommu-updates-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (71 commits)
  iommu/amd: Skip attach device domain is same as new domain
  iommu: Attach device group to old domain in error path
  iommu/vt-d: Allow to use flush-queue when first level is default
  iommu/vt-d: Fix PASID directory pointer coherency
  iommu/vt-d: Avoid superfluous IOTLB tracking in lazy mode
  iommu/vt-d: Fix error handling in sva enable/disable paths
  iommu/amd: Improve page fault error reporting
  iommu/amd: Do not identity map v2 capable device when snp is enabled
  iommu: Fix error unwind in iommu_group_alloc()
  iommu/of: mark an unused function as __maybe_unused
  iommu: dart: DART_T8110_ERROR range should be 0 to 5
  iommu/vt-d: Enable IOMMU perfmon support
  iommu/vt-d: Add IOMMU perfmon overflow handler support
  iommu/vt-d: Support cpumask for IOMMU perfmon
  iommu/vt-d: Add IOMMU perfmon support
  iommu/vt-d: Support Enhanced Command Interface
  iommu/vt-d: Retrieve IOMMU perfmon capability information
  iommu/vt-d: Support size of the register set in DRHD
  iommu/vt-d: Set No Execute Enable bit in PASID table entry
  iommu/vt-d: Remove sva from intel_svm_dev
  ...

Author: torvalds

Documentation/ABI/testing/sysfs-bus-event_source-devices-iommu

@@ -0,0 +1,37 @@
+What:		/sys/bus/event_source/devices/dmar*/format
+Date:		Jan 2023
+KernelVersion:  6.3
+Contact:	Kan Liang <[email protected]>
+Description:	Read-only.  Attribute group to describe the magic bits
+		that go into perf_event_attr.config,
+		perf_event_attr.config1 or perf_event_attr.config2 for
+		the IOMMU pmu.  (See also
+		ABI/testing/sysfs-bus-event_source-devices-format).
+
+		Each attribute in this group defines a bit range in
+		perf_event_attr.config, perf_event_attr.config1,
+		or perf_event_attr.config2. All supported attributes
+		are listed below (See the VT-d Spec 4.0 for possible
+		attribute values)::
+
+		    event		= "config:0-27"   - event ID
+		    event_group		= "config:28-31"  - event group ID
+
+		    filter_requester_en	= "config1:0"     - Enable Requester ID filter
+		    filter_domain_en	= "config1:1"     - Enable Domain ID filter
+		    filter_pasid_en	= "config1:2"     - Enable PASID filter
+		    filter_ats_en	= "config1:3"     - Enable Address Type filter
+		    filter_page_table_en= "config1:4"     - Enable Page Table Level filter
+		    filter_requester_id	= "config1:16-31" - Requester ID filter
+		    filter_domain	= "config1:32-47" - Domain ID filter
+		    filter_pasid	= "config2:0-21"  - PASID filter
+		    filter_ats		= "config2:24-28" - Address Type filter
+		    filter_page_table	= "config2:32-36" - Page Table Level filter
+
+What:		/sys/bus/event_source/devices/dmar*/cpumask
+Date:		Jan 2023
+KernelVersion:	6.3
+Contact:	Kan Liang <[email protected]>
+Description:	Read-only. This file always returns the CPU to which the
+		IOMMU pmu is bound for access to all IOMMU pmu performance
+		monitoring events.

Documentation/devicetree/bindings/iommu/apple,dart.yaml

@@ -24,6 +24,7 @@ properties:
   compatible:
     enum:
       - apple,t8103-dart
+      - apple,t8110-dart
       - apple,t6000-dart
 
   reg:

Documentation/devicetree/bindings/iommu/arm,smmu.yaml

@@ -36,13 +36,17 @@ properties:
           - 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,sm6115-smmu-500
+              - qcom,sm6125-smmu-500
               - qcom,sm6350-smmu-500
               - qcom,sm6375-smmu-500
               - qcom,sm8150-smmu-500
@@ -52,14 +56,6 @@ properties:
           - const: qcom,smmu-500
           - const: arm,mmu-500
 
-      - description: Qcom SoCs implementing "arm,mmu-500" (non-qcom implementation)
-        deprecated: true
-        items:
-          - enum:
-              - qcom,sdx55-smmu-500
-              - qcom,sdx65-smmu-500
-          - const: arm,mmu-500
-
       - description: Qcom SoCs implementing "arm,mmu-500" (legacy binding)
         deprecated: true
         items:
@@ -84,6 +80,7 @@ properties:
         items:
           - enum:
               - qcom,sc7280-smmu-500
+              - qcom,sm8150-smmu-500
               - qcom,sm8250-smmu-500
           - const: qcom,adreno-smmu
           - const: arm,mmu-500
@@ -201,7 +198,8 @@ properties:
     maxItems: 7
 
   power-domains:
-    maxItems: 1
+    minItems: 1
+    maxItems: 3
 
   nvidia,memory-controller:
     description: |
@@ -366,6 +364,56 @@ allOf:
             - description: interface clock required to access smmu's registers
                 through the TCU's programming interface.
 
+  # 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,qcm2290-smmu-500
+              - qcom,qdu1000-smmu-500
+              - qcom,sa8775p-smmu-500
+              - qcom,sc7180-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,sm6115-smmu-500
+              - qcom,sm6125-smmu-500
+              - qcom,sm6350-smmu-500
+              - qcom,sm6375-smmu-500
+              - qcom,sm8350-smmu-500
+              - qcom,sm8450-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 */

Documentation/devicetree/bindings/iommu/qcom,iommu.txt

@@ -10,6 +10,7 @@ to non-secure vs secure interrupt line.
 - compatible       : Should be one of:
 
                         "qcom,msm8916-iommu"
+                        "qcom,msm8953-iommu"
 
                      Followed by "qcom,msm-iommu-v1".
 

Documentation/devicetree/bindings/iommu/renesas,ipmmu-vmsa.yaml

@@ -49,6 +49,7 @@ properties:
           - 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:

Documentation/devicetree/bindings/reserved-memory/reserved-memory.yaml

@@ -52,6 +52,30 @@ properties:
       Address and Length pairs. Specifies regions of memory that are
       acceptable to allocate from.
 
+  iommu-addresses:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description: >
+      A list of phandle and specifier pairs that describe static IO virtual
+      address space mappings and carveouts associated with a given reserved
+      memory region. The phandle in the first cell refers to the device for
+      which the mapping or carveout is to be created.
+
+      The specifier consists of an address/size pair and denotes the IO
+      virtual address range of the region for the given device. The exact
+      format depends on the values of the "#address-cells" and "#size-cells"
+      properties of the device referenced via the phandle.
+
+      When used in combination with a "reg" property, an IOVA mapping is to
+      be established for this memory region. One example where this can be
+      useful is to create an identity mapping for physical memory that the
+      firmware has configured some hardware to access (such as a bootsplash
+      framebuffer).
+
+      If no "reg" property is specified, the "iommu-addresses" property
+      defines carveout regions in the IOVA space for the given device. This
+      can be useful if a certain memory region should not be mapped through
+      the IOMMU.
+
   no-map:
     type: boolean
     description: >
@@ -89,12 +113,69 @@ allOf:
           - no-map
 
 oneOf:
-  - required:
-      - reg
+  - oneOf:
+      - required:
+          - reg
+
+      - required:
+          - size
+
+  - oneOf:
+      # IOMMU reservations
+      - required:
+          - iommu-addresses
 
-  - required:
-      - size
+      # IOMMU mappings
+      - required:
+          - reg
+          - iommu-addresses
 
 additionalProperties: true
 
+examples:
+  - |
+    / {
+      compatible = "foo";
+      model = "foo";
+
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      reserved-memory {
+        #address-cells = <2>;
+        #size-cells = <2>;
+        ranges;
+
+        adsp_resv: reservation-adsp {
+          /*
+           * Restrict IOVA mappings for ADSP buffers to the 512 MiB region
+           * from 0x40000000 - 0x5fffffff. Anything outside is reserved by
+           * the ADSP for I/O memory and private memory allocations.
+           */
+          iommu-addresses = <&adsp 0x0 0x00000000 0x00 0x40000000>,
+                            <&adsp 0x0 0x60000000 0xff 0xa0000000>;
+        };
+
+        fb: framebuffer@90000000 {
+          reg = <0x0 0x90000000 0x0 0x00800000>;
+          iommu-addresses = <&dc0 0x0 0x90000000 0x0 0x00800000>;
+        };
+      };
+
+      bus@0 {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges = <0x0 0x0 0x0 0x40000000>;
+
+        adsp: adsp@2990000 {
+          reg = <0x2990000 0x2000>;
+          memory-region = <&adsp_resv>;
+        };
+
+        dc0: display@15200000 {
+          reg = <0x15200000 0x10000>;
+          memory-region = <&fb>;
+        };
+      };
+    };
 ...

MAINTAINERS

@@ -10354,7 +10354,6 @@ L:	[email protected]
 S:	Supported
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git
 F:	drivers/iommu/intel/
-F:	include/linux/intel-svm.h
 
 INTEL IPU3 CSI-2 CIO2 DRIVER
 M:	Yong Zhi <[email protected]>

arch/arm/mm/dma-mapping.c

@@ -984,7 +984,8 @@ __iommu_create_mapping(struct device *dev, struct page **pages, size_t size,
 
 		len = (j - i) << PAGE_SHIFT;
 		ret = iommu_map(mapping->domain, iova, phys, len,
-				__dma_info_to_prot(DMA_BIDIRECTIONAL, attrs));
+				__dma_info_to_prot(DMA_BIDIRECTIONAL, attrs),
+				GFP_KERNEL);
 		if (ret < 0)
 			goto fail;
 		iova += len;
@@ -1207,7 +1208,8 @@ static int __map_sg_chunk(struct device *dev, struct scatterlist *sg,
 
 		prot = __dma_info_to_prot(dir, attrs);
 
-		ret = iommu_map(mapping->domain, iova, phys, len, prot);
+		ret = iommu_map(mapping->domain, iova, phys, len, prot,
+				GFP_KERNEL);
 		if (ret < 0)
 			goto fail;
 		count += len >> PAGE_SHIFT;
@@ -1379,7 +1381,8 @@ static dma_addr_t arm_iommu_map_page(struct device *dev, struct page *page,
 
 	prot = __dma_info_to_prot(dir, attrs);
 
-	ret = iommu_map(mapping->domain, dma_addr, page_to_phys(page), len, prot);
+	ret = iommu_map(mapping->domain, dma_addr, page_to_phys(page), len,
+			prot, GFP_KERNEL);
 	if (ret < 0)
 		goto fail;
 
@@ -1443,7 +1446,7 @@ static dma_addr_t arm_iommu_map_resource(struct device *dev,
 
 	prot = __dma_info_to_prot(dir, attrs) | IOMMU_MMIO;
 
-	ret = iommu_map(mapping->domain, dma_addr, addr, len, prot);
+	ret = iommu_map(mapping->domain, dma_addr, addr, len, prot, GFP_KERNEL);
 	if (ret < 0)
 		goto fail;
 

arch/s390/include/asm/pci_dma.h

@@ -186,9 +186,10 @@ static inline unsigned long *get_st_pto(unsigned long entry)
 
 /* Prototypes */
 void dma_free_seg_table(unsigned long);
-unsigned long *dma_alloc_cpu_table(void);
+unsigned long *dma_alloc_cpu_table(gfp_t gfp);
 void dma_cleanup_tables(unsigned long *);
-unsigned long *dma_walk_cpu_trans(unsigned long *rto, dma_addr_t dma_addr);
+unsigned long *dma_walk_cpu_trans(unsigned long *rto, dma_addr_t dma_addr,
+				  gfp_t gfp);
 void dma_update_cpu_trans(unsigned long *entry, phys_addr_t page_addr, int flags);
 
 extern const struct dma_map_ops s390_pci_dma_ops;