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| author | David Gibson | 2012-09-12 18:57:14 +0200 |
|---|---|---|
| committer | Alexander Graf | 2012-10-04 15:54:17 +0200 |
| commit | eddeed26ac83392053aef823a341f643ea8e3d2f (patch) | |
| tree | 9432d42a4d3b48c022aa4cc29c3808b7853e87b9 /hw/spapr.h | |
| parent | pseries: Clear TCE and signal state when resetting PAPR VIO devices (diff) | |
| download | qemu-eddeed26ac83392053aef823a341f643ea8e3d2f.tar.gz qemu-eddeed26ac83392053aef823a341f643ea8e3d2f.tar.xz qemu-eddeed26ac83392053aef823a341f643ea8e3d2f.zip | |
pseries: Reset emulated PCI TCE tables on system reset
The emulated PCI host bridge on the pseries machine incorporates an IOMMU
(PAPR TCE table). Currently the mappings in this IOMMU are not cleared
when we reset the system. This patch fixes this bug. To do this it adds
a new reset function to the IOMMU emulation code. The VIO devices already
reset their TCE tables, but they do so by destroying and re-creating their
DMA context. This doesn't work for the PCI host bridge, because the
infrastructure for PCI IOMMUs has already copied/cached the DMA pointer
context into the subordinate PCI device structures.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'hw/spapr.h')
| -rw-r--r-- | hw/spapr.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/spapr.h b/hw/spapr.h index f1fb646a56..f9a7b0fa33 100644 --- a/hw/spapr.h +++ b/hw/spapr.h @@ -338,6 +338,7 @@ typedef struct sPAPRTCE { void spapr_iommu_init(void); DMAContext *spapr_tce_new_dma_context(uint32_t liobn, size_t window_size); void spapr_tce_free(DMAContext *dma); +void spapr_tce_reset(DMAContext *dma); int spapr_dma_dt(void *fdt, int node_off, const char *propname, uint32_t liobn, uint64_t window, uint32_t size); int spapr_tcet_dma_dt(void *fdt, int node_off, const char *propname, |