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* iommu/s390: simplify registration of I/O address translation parametersSebastian Ott2016-09-221-2/+1
| | | | | | | | | | | | | When a new function is attached to an iommu domain we need to register I/O address translation parameters. Since commit 69eea95c ("s390/pci_dma: fix DMA table corruption with > 4 TB main memory") start_dma and end_dma correctly describe the range of usable I/O addresses. Simplify the code by using these values directly. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* iommu/s390: Fix sparse warningsSebastian Ott2015-11-261-2/+2
| | | | | | | | | | Fix these warnings: CHECK drivers/iommu/s390-iommu.c drivers/iommu/s390-iommu.c:52:21: warning: symbol 's390_domain_alloc' was not declared. Should it be static? drivers/iommu/s390-iommu.c:76:6: warning: symbol 's390_domain_free' was not declared. Should it be static? Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* s390/pci_dma: handle dma table failuresSebastian Ott2015-11-091-2/+21
| | | | | | | | | | | | We use lazy allocation for translation table entries but don't handle allocation (and other) failures during translation table updates. Handle these failures and undo translation table updates when it's meaningful. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* iommu/s390: Add iommu api for s390 pci devicesGerald Schaefer2015-10-061-0/+337
This adds an IOMMU API implementation for s390 PCI devices. Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>