diff options
Diffstat (limited to 'hw/spapr_iommu.c')
| -rw-r--r-- | hw/spapr_iommu.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/hw/spapr_iommu.c b/hw/spapr_iommu.c index 53b731773..38034c07b 100644 --- a/hw/spapr_iommu.c +++ b/hw/spapr_iommu.c @@ -42,6 +42,7 @@ struct sPAPRTCETable { uint32_t liobn; uint32_t window_size; sPAPRTCE *table; + bool bypass; int fd; QLIST_ENTRY(sPAPRTCETable) list; }; @@ -78,6 +79,12 @@ static int spapr_tce_translate(DMAContext *dma, DMA_ADDR_FMT "\n", tcet->liobn, addr); #endif + if (tcet->bypass) { + *paddr = addr; + *len = (target_phys_addr_t)-1; + return 0; + } + /* Check if we are in bound */ if (addr >= tcet->window_size) { #ifdef DEBUG_TCE @@ -162,6 +169,23 @@ void spapr_tce_free(DMAContext *dma) } } +void spapr_tce_set_bypass(DMAContext *dma, bool bypass) +{ + sPAPRTCETable *tcet = DO_UPCAST(sPAPRTCETable, dma, dma); + + tcet->bypass = bypass; +} + +void spapr_tce_reset(DMAContext *dma) +{ + sPAPRTCETable *tcet = DO_UPCAST(sPAPRTCETable, dma, dma); + size_t table_size = (tcet->window_size >> SPAPR_TCE_PAGE_SHIFT) + * sizeof(sPAPRTCE); + + tcet->bypass = false; + memset(tcet->table, 0, table_size); +} + static target_ulong put_tce_emu(sPAPRTCETable *tcet, target_ulong ioba, target_ulong tce) { |