diff options
Diffstat (limited to 'hw/ppc/spapr_iommu.c')
-rw-r--r-- | hw/ppc/spapr_iommu.c | 119 |
1 files changed, 57 insertions, 62 deletions
diff --git a/hw/ppc/spapr_iommu.c b/hw/ppc/spapr_iommu.c index e1fe941..91bc8e4 100644 --- a/hw/ppc/spapr_iommu.c +++ b/hw/ppc/spapr_iommu.c @@ -36,15 +36,13 @@ enum sPAPRTCEAccess { SPAPR_TCE_RW = 3, }; -typedef struct sPAPRTCETable sPAPRTCETable; - struct sPAPRTCETable { - DMAContext dma; uint32_t liobn; uint32_t window_size; sPAPRTCE *table; bool bypass; int fd; + MemoryRegion iommu; QLIST_ENTRY(sPAPRTCETable) list; }; @@ -70,15 +68,9 @@ static sPAPRTCETable *spapr_tce_find_by_liobn(uint32_t liobn) return NULL; } -static int spapr_tce_translate(DMAContext *dma, - dma_addr_t addr, - hwaddr *paddr, - hwaddr *len, - DMADirection dir) +static IOMMUTLBEntry spapr_tce_translate_iommu(MemoryRegion *iommu, hwaddr addr) { - sPAPRTCETable *tcet = DO_UPCAST(sPAPRTCETable, dma, dma); - enum sPAPRTCEAccess access = (dir == DMA_DIRECTION_FROM_DEVICE) - ? SPAPR_TCE_WO : SPAPR_TCE_RO; + sPAPRTCETable *tcet = container_of(iommu, sPAPRTCETable, iommu); uint64_t tce; #ifdef DEBUG_TCE @@ -87,9 +79,13 @@ static int spapr_tce_translate(DMAContext *dma, #endif if (tcet->bypass) { - *paddr = addr; - *len = (hwaddr)-1; - return 0; + return (IOMMUTLBEntry) { + .target_as = &address_space_memory, + .iova = 0, + .translated_addr = 0, + .addr_mask = ~(hwaddr)0, + .perm = IOMMU_RW, + }; } /* Check if we are in bound */ @@ -97,32 +93,30 @@ static int spapr_tce_translate(DMAContext *dma, #ifdef DEBUG_TCE fprintf(stderr, "spapr_tce_translate out of bounds\n"); #endif - return -EFAULT; + return (IOMMUTLBEntry) { .perm = IOMMU_NONE }; } tce = tcet->table[addr >> SPAPR_TCE_PAGE_SHIFT].tce; - /* Check TCE */ - if (!(tce & access)) { - return -EPERM; - } - - /* How much til end of page ? */ - *len = ((~addr) & SPAPR_TCE_PAGE_MASK) + 1; - - /* Translate */ - *paddr = (tce & ~SPAPR_TCE_PAGE_MASK) | - (addr & SPAPR_TCE_PAGE_MASK); - #ifdef DEBUG_TCE - fprintf(stderr, " -> *paddr=0x" TARGET_FMT_plx ", *len=0x" - TARGET_FMT_plx "\n", *paddr, *len); + fprintf(stderr, " -> *paddr=0x%llx, *len=0x%llx\n", + (tce & ~SPAPR_TCE_PAGE_MASK), SPAPR_TCE_PAGE_MASK + 1); #endif - return 0; + return (IOMMUTLBEntry) { + .target_as = &address_space_memory, + .iova = addr & ~SPAPR_TCE_PAGE_MASK, + .translated_addr = tce & ~SPAPR_TCE_PAGE_MASK, + .addr_mask = SPAPR_TCE_PAGE_MASK, + .perm = tce, + }; } -DMAContext *spapr_tce_new_dma_context(uint32_t liobn, size_t window_size) +static MemoryRegionIOMMUOps spapr_iommu_ops = { + .translate = spapr_tce_translate_iommu, +}; + +sPAPRTCETable *spapr_tce_new_table(uint32_t liobn, size_t window_size) { sPAPRTCETable *tcet; @@ -137,8 +131,6 @@ DMAContext *spapr_tce_new_dma_context(uint32_t liobn, size_t window_size) } tcet = g_malloc0(sizeof(*tcet)); - dma_context_init(&tcet->dma, &address_space_memory, spapr_tce_translate, NULL, NULL); - tcet->liobn = liobn; tcet->window_size = window_size; @@ -155,43 +147,43 @@ DMAContext *spapr_tce_new_dma_context(uint32_t liobn, size_t window_size) } #ifdef DEBUG_TCE - fprintf(stderr, "spapr_iommu: New TCE table, liobn=0x%x, context @ %p, " - "table @ %p, fd=%d\n", liobn, &tcet->dma, tcet->table, tcet->fd); + fprintf(stderr, "spapr_iommu: New TCE table @ %p, liobn=0x%x, " + "table @ %p, fd=%d\n", tcet, liobn, tcet->table, tcet->fd); #endif + memory_region_init_iommu(&tcet->iommu, &spapr_iommu_ops, + "iommu-spapr", UINT64_MAX); + QLIST_INSERT_HEAD(&spapr_tce_tables, tcet, list); - return &tcet->dma; + return tcet; } -void spapr_tce_free(DMAContext *dma) +void spapr_tce_free(sPAPRTCETable *tcet) { + QLIST_REMOVE(tcet, list); - if (dma) { - sPAPRTCETable *tcet = DO_UPCAST(sPAPRTCETable, dma, dma); - - QLIST_REMOVE(tcet, list); - - if (!kvm_enabled() || - (kvmppc_remove_spapr_tce(tcet->table, tcet->fd, - tcet->window_size) != 0)) { - g_free(tcet->table); - } - - g_free(tcet); + if (!kvm_enabled() || + (kvmppc_remove_spapr_tce(tcet->table, tcet->fd, + tcet->window_size) != 0)) { + g_free(tcet->table); } + + g_free(tcet); } -void spapr_tce_set_bypass(DMAContext *dma, bool bypass) +MemoryRegion *spapr_tce_get_iommu(sPAPRTCETable *tcet) { - sPAPRTCETable *tcet = DO_UPCAST(sPAPRTCETable, dma, dma); + return &tcet->iommu; +} +void spapr_tce_set_bypass(sPAPRTCETable *tcet, bool bypass) +{ tcet->bypass = bypass; } -void spapr_tce_reset(DMAContext *dma) +void spapr_tce_reset(sPAPRTCETable *tcet) { - sPAPRTCETable *tcet = DO_UPCAST(sPAPRTCETable, dma, dma); size_t table_size = (tcet->window_size >> SPAPR_TCE_PAGE_SHIFT) * sizeof(sPAPRTCE); @@ -203,6 +195,7 @@ static target_ulong put_tce_emu(sPAPRTCETable *tcet, target_ulong ioba, target_ulong tce) { sPAPRTCE *tcep; + IOMMUTLBEntry entry; if (ioba >= tcet->window_size) { hcall_dprintf("spapr_vio_put_tce on out-of-bounds IOBA 0x" @@ -213,6 +206,13 @@ static target_ulong put_tce_emu(sPAPRTCETable *tcet, target_ulong ioba, tcep = tcet->table + (ioba >> SPAPR_TCE_PAGE_SHIFT); tcep->tce = tce; + entry.target_as = &address_space_memory, + entry.iova = ioba & ~SPAPR_TCE_PAGE_MASK; + entry.translated_addr = tce & ~SPAPR_TCE_PAGE_MASK; + entry.addr_mask = SPAPR_TCE_PAGE_MASK; + entry.perm = tce; + memory_region_notify_iommu(&tcet->iommu, entry); + return H_SUCCESS; } @@ -277,17 +277,12 @@ int spapr_dma_dt(void *fdt, int node_off, const char *propname, } int spapr_tcet_dma_dt(void *fdt, int node_off, const char *propname, - DMAContext *iommu) + sPAPRTCETable *tcet) { - if (!iommu) { + if (!tcet) { return 0; } - if (iommu->translate == spapr_tce_translate) { - sPAPRTCETable *tcet = DO_UPCAST(sPAPRTCETable, dma, iommu); - return spapr_dma_dt(fdt, node_off, propname, - tcet->liobn, 0, tcet->window_size); - } - - return -1; + return spapr_dma_dt(fdt, node_off, propname, + tcet->liobn, 0, tcet->window_size); } |