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author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2018-02-06 11:08:24 -0700 |
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committer | Alex Williamson <alex.williamson@redhat.com> | 2018-02-06 11:08:24 -0700 |
commit | f1334de60b2a43102d2d47918463e6a2cdcfcdeb (patch) | |
tree | 0665c22f5aade5bc536cc1ad38e7c7d6c760a84d | |
parent | 20e0d439a6ded635ec89f6135c08cd5541c68962 (diff) | |
download | qemu-f1334de60b2a43102d2d47918463e6a2cdcfcdeb.zip qemu-f1334de60b2a43102d2d47918463e6a2cdcfcdeb.tar.gz qemu-f1334de60b2a43102d2d47918463e6a2cdcfcdeb.tar.bz2 |
memory/iommu: Add get_attr()
This adds get_attr() to IOMMUMemoryRegionClass, like
iommu_ops::domain_get_attr in the Linux kernel.
This defines the first attribute - IOMMU_ATTR_SPAPR_TCE_FD - which
will be used between the pSeries machine and VFIO-PCI.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
-rw-r--r-- | include/exec/memory.h | 22 | ||||
-rw-r--r-- | memory.c | 13 |
2 files changed, 35 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index 07c5d6d..3ef8399 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -190,6 +190,10 @@ struct MemoryRegionOps { const MemoryRegionMmio old_mmio; }; +enum IOMMUMemoryRegionAttr { + IOMMU_ATTR_SPAPR_TCE_FD +}; + typedef struct IOMMUMemoryRegionClass { /* private */ struct DeviceClass parent_class; @@ -210,6 +214,10 @@ typedef struct IOMMUMemoryRegionClass { IOMMUNotifierFlag new_flags); /* Set this up to provide customized IOMMU replay function */ void (*replay)(IOMMUMemoryRegion *iommu, IOMMUNotifier *notifier); + + /* Get IOMMU misc attributes */ + int (*get_attr)(IOMMUMemoryRegion *iommu, enum IOMMUMemoryRegionAttr, + void *data); } IOMMUMemoryRegionClass; typedef struct CoalescedMemoryRange CoalescedMemoryRange; @@ -927,6 +935,20 @@ void memory_region_unregister_iommu_notifier(MemoryRegion *mr, IOMMUNotifier *n); /** + * memory_region_iommu_get_attr: return an IOMMU attr if get_attr() is + * defined on the IOMMU. + * + * Returns 0 if succeded, error code otherwise. + * + * @iommu_mr: the memory region + * @attr: the requested attribute + * @data: a pointer to the requested attribute data + */ +int memory_region_iommu_get_attr(IOMMUMemoryRegion *iommu_mr, + enum IOMMUMemoryRegionAttr attr, + void *data); + +/** * memory_region_name: get a memory region's name * * Returns the string that was used to initialize the memory region. @@ -1922,6 +1922,19 @@ void memory_region_notify_iommu(IOMMUMemoryRegion *iommu_mr, } } +int memory_region_iommu_get_attr(IOMMUMemoryRegion *iommu_mr, + enum IOMMUMemoryRegionAttr attr, + void *data) +{ + IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr); + + if (!imrc->get_attr) { + return -EINVAL; + } + + return imrc->get_attr(iommu_mr, attr, data); +} + void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client) { uint8_t mask = 1 << client; |