iommu: Add IOMMU index argument to translate method

Add an IOMMU index argument to the translate method of
IOMMUs. Since all of our current IOMMU implementations
support only a single IOMMU index, this has no effect
on the behaviour.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20180604152941.20374-4-peter.maydell@linaro.org

exec.c

@@ -501,8 +501,15 @@ static MemoryRegionSection address_space_translate_iommu(IOMMUMemoryRegion *iomm
     do {
         hwaddr addr = *xlat;
         IOMMUMemoryRegionClass *imrc = memory_region_get_iommu_class_nocheck(iommu_mr);
-        IOMMUTLBEntry iotlb = imrc->translate(iommu_mr, addr, is_write ?
-                                              IOMMU_WO : IOMMU_RO);
+        int iommu_idx = 0;
+        IOMMUTLBEntry iotlb;
+
+        if (imrc->attrs_to_index) {
+            iommu_idx = imrc->attrs_to_index(iommu_mr, attrs);
+        }
+
+        iotlb = imrc->translate(iommu_mr, addr, is_write ?
+                                IOMMU_WO : IOMMU_RO, iommu_idx);
 
         if (!(iotlb.perm & (1 << is_write))) {
             goto unassigned;

hw/alpha/typhoon.c

@@ -666,7 +666,8 @@ static bool window_translate(TyphoonWindow *win, hwaddr addr,
    Pchip and generate a machine check interrupt.  */
 static IOMMUTLBEntry typhoon_translate_iommu(IOMMUMemoryRegion *iommu,
                                              hwaddr addr,
-                                             IOMMUAccessFlags flag)
+                                             IOMMUAccessFlags flag,
+                                             int iommu_idx)
 {
     TyphoonPchip *pchip = container_of(iommu, TyphoonPchip, iommu);
     IOMMUTLBEntry ret;

hw/arm/smmuv3.c

@@ -538,7 +538,7 @@ static int smmuv3_decode_config(IOMMUMemoryRegion *mr, SMMUTransCfg *cfg,
 }
 
 static IOMMUTLBEntry smmuv3_translate(IOMMUMemoryRegion *mr, hwaddr addr,
-                                      IOMMUAccessFlags flag)
+                                      IOMMUAccessFlags flag, int iommu_idx)
 {
     SMMUDevice *sdev = container_of(mr, SMMUDevice, iommu);
     SMMUv3State *s = sdev->smmu;

hw/dma/rc4030.c

@@ -491,7 +491,7 @@ static const MemoryRegionOps jazzio_ops = {
 };
 
 static IOMMUTLBEntry rc4030_dma_translate(IOMMUMemoryRegion *iommu, hwaddr addr,
-                                          IOMMUAccessFlags flag)
+                                          IOMMUAccessFlags flag, int iommu_idx)
 {
     rc4030State *s = container_of(iommu, rc4030State, dma_mr);
     IOMMUTLBEntry ret = {

hw/i386/amd_iommu.c

@@ -991,7 +991,7 @@ static inline bool amdvi_is_interrupt_addr(hwaddr addr)
 }
 
 static IOMMUTLBEntry amdvi_translate(IOMMUMemoryRegion *iommu, hwaddr addr,
-                                     IOMMUAccessFlags flag)
+                                     IOMMUAccessFlags flag, int iommu_idx)
 {
     AMDVIAddressSpace *as = container_of(iommu, AMDVIAddressSpace, iommu);
     AMDVIState *s = as->iommu_state;

hw/i386/intel_iommu.c

@@ -2471,7 +2471,7 @@ static void vtd_mem_write(void *opaque, hwaddr addr,
 }
 
 static IOMMUTLBEntry vtd_iommu_translate(IOMMUMemoryRegion *iommu, hwaddr addr,
-                                         IOMMUAccessFlags flag)
+                                         IOMMUAccessFlags flag, int iommu_idx)
 {
     VTDAddressSpace *vtd_as = container_of(iommu, VTDAddressSpace, iommu);
     IntelIOMMUState *s = vtd_as->iommu_state;

hw/ppc/spapr_iommu.c

@@ -112,7 +112,8 @@ static void spapr_tce_free_table(uint64_t *table, int fd, uint32_t nb_table)
 /* Called from RCU critical section */
 static IOMMUTLBEntry spapr_tce_translate_iommu(IOMMUMemoryRegion *iommu,
                                                hwaddr addr,
-                                               IOMMUAccessFlags flag)
+                                               IOMMUAccessFlags flag,
+                                               int iommu_idx)
 {
     sPAPRTCETable *tcet = container_of(iommu, sPAPRTCETable, iommu);
     uint64_t tce;

hw/s390x/s390-pci-bus.c

@@ -484,7 +484,7 @@ uint16_t s390_guest_io_table_walk(uint64_t g_iota, hwaddr addr,
 }
 
 static IOMMUTLBEntry s390_translate_iommu(IOMMUMemoryRegion *mr, hwaddr addr,
-                                          IOMMUAccessFlags flag)
+                                          IOMMUAccessFlags flag, int iommu_idx)
 {
     S390PCIIOMMU *iommu = container_of(mr, S390PCIIOMMU, iommu_mr);
     S390IOTLBEntry *entry;

hw/sparc/sun4m_iommu.c

@@ -282,7 +282,8 @@ static void iommu_bad_addr(IOMMUState *s, hwaddr addr,
 /* Called from RCU critical section */
 static IOMMUTLBEntry sun4m_translate_iommu(IOMMUMemoryRegion *iommu,
                                            hwaddr addr,
-                                           IOMMUAccessFlags flags)
+                                           IOMMUAccessFlags flags,
+                                           int iommu_idx)
 {
     IOMMUState *is = container_of(iommu, IOMMUState, iommu);
     hwaddr page, pa;

hw/sparc64/sun4u_iommu.c

@@ -73,7 +73,7 @@
 /* Called from RCU critical section */
 static IOMMUTLBEntry sun4u_translate_iommu(IOMMUMemoryRegion *iommu,
                                            hwaddr addr,
-                                           IOMMUAccessFlags flag)
+                                           IOMMUAccessFlags flag, int iommu_idx)
 {
     IOMMUState *is = container_of(iommu, IOMMUState, iommu);
     hwaddr baseaddr, offset;

include/exec/memory.h

@@ -251,9 +251,10 @@ typedef struct IOMMUMemoryRegionClass {
      * @iommu: the IOMMUMemoryRegion
      * @hwaddr: address to be translated within the memory region
      * @flag: requested access permissions
+     * @iommu_idx: IOMMU index for the translation
      */
     IOMMUTLBEntry (*translate)(IOMMUMemoryRegion *iommu, hwaddr addr,
-                               IOMMUAccessFlags flag);
+                               IOMMUAccessFlags flag, int iommu_idx);
     /* Returns minimum supported page size in bytes.
      * If this method is not provided then the minimum is assumed to
      * be TARGET_PAGE_SIZE.

memory.c

@@ -1832,7 +1832,7 @@ void memory_region_iommu_replay(IOMMUMemoryRegion *iommu_mr, IOMMUNotifier *n)
     granularity = memory_region_iommu_get_min_page_size(iommu_mr);
 
     for (addr = 0; addr < memory_region_size(mr); addr += granularity) {
-        iotlb = imrc->translate(iommu_mr, addr, IOMMU_NONE);
+        iotlb = imrc->translate(iommu_mr, addr, IOMMU_NONE, n->iommu_idx);
         if (iotlb.perm != IOMMU_NONE) {
             n->notify(n, &iotlb);
         }