From 4e99a0f7ae2a8392fd306c357148763ac4f820f9 Mon Sep 17 00:00:00 2001 From: Yi Min Zhao Date: Mon, 19 Jan 2015 15:15:56 +0800 Subject: [PATCH] s390x/pci: fix dma notifications in rpcit instruction The virtual I/O address range passed to rpcit instruction might not map to consecutive physical guest pages. For this we have to translate and create mapping notifications for each vioa page separately. Signed-off-by: Yi Min Zhao Signed-off-by: Cornelia Huck --- hw/s390x/s390-pci-inst.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c index c2691841fd..9e5bc5b899 100644 --- a/hw/s390x/s390-pci-inst.c +++ b/hw/s390x/s390-pci-inst.c @@ -487,7 +487,7 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2) CPUS390XState *env = &cpu->env; uint32_t fh; S390PCIBusDevice *pbdev; - ram_addr_t size; + hwaddr start, end; IOMMUTLBEntry entry; MemoryRegion *mr; @@ -504,7 +504,8 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2) } fh = env->regs[r1] >> 32; - size = env->regs[r2 + 1]; + start = env->regs[r2]; + end = start + env->regs[r2 + 1]; pbdev = s390_pci_find_dev_by_fh(fh); @@ -515,15 +516,18 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2) } mr = pci_device_iommu_address_space(pbdev->pdev)->root; - entry = mr->iommu_ops->translate(mr, env->regs[r2], 0); + while (start < end) { + entry = mr->iommu_ops->translate(mr, start, 0); - if (!entry.translated_addr) { - setcc(cpu, ZPCI_PCI_LS_ERR); - goto out; + if (!entry.translated_addr) { + setcc(cpu, ZPCI_PCI_LS_ERR); + goto out; + } + + memory_region_notify_iommu(mr, entry); + start += entry.addr_mask + 1; } - entry.addr_mask = size - 1; - memory_region_notify_iommu(mr, entry); setcc(cpu, ZPCI_PCI_LS_OK); out: return 0;