spapr_iommu: Introduce page_shift in sPAPRTCETable At the moment only 4K pages are supported by sPAPRTCETable. Since sPAPR spec allows other page sizes and we are going to implement them, we need page size to be configrable. This adds @page_shift into sPAPRTCETable and replaces SPAPR_TCE_PAGE_SHIFT with it where it is possible. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/hw/ppc/spapr_iommu.c b/hw/ppc/spapr_iommu.c index 738b936..46102b9 100644 --- a/hw/ppc/spapr_iommu.c +++ b/hw/ppc/spapr_iommu.c
@@ -35,6 +35,9 @@ SPAPR_TCE_RW = 3, }; +#define IOMMU_PAGE_SIZE(shift) (1ULL << (shift)) +#define IOMMU_PAGE_MASK(shift) (~(IOMMU_PAGE_SIZE(shift) - 1)) + static QLIST_HEAD(spapr_tce_tables, sPAPRTCETable) spapr_tce_tables; static sPAPRTCETable *spapr_tce_find_by_liobn(uint32_t liobn) @@ -70,12 +73,14 @@ if (tcet->bypass) { ret.perm = IOMMU_RW; - } else if ((addr >> SPAPR_TCE_PAGE_SHIFT) < tcet->nb_table) { + } else if ((addr >> tcet->page_shift) < tcet->nb_table) { /* Check if we are in bound */ - tce = tcet->table[addr >> SPAPR_TCE_PAGE_SHIFT]; - ret.iova = addr & ~SPAPR_TCE_PAGE_MASK; - ret.translated_addr = tce & ~SPAPR_TCE_PAGE_MASK; - ret.addr_mask = SPAPR_TCE_PAGE_MASK; + hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift); + + tce = tcet->table[addr >> tcet->page_shift]; + ret.iova = addr & page_mask; + ret.translated_addr = tce & page_mask; + ret.addr_mask = ~page_mask; ret.perm = tce; } trace_spapr_iommu_xlate(tcet->liobn, addr, ret.iova, ret.perm, @@ -112,7 +117,7 @@ if (kvm_enabled()) { tcet->table = kvmppc_create_spapr_tce(tcet->liobn, tcet->nb_table << - SPAPR_TCE_PAGE_SHIFT, + tcet->page_shift, &tcet->fd); } @@ -135,6 +140,7 @@ } sPAPRTCETable *spapr_tce_new_table(DeviceState *owner, uint32_t liobn, + uint32_t page_shift, uint32_t nb_table) { sPAPRTCETable *tcet; @@ -151,6 +157,7 @@ tcet = SPAPR_TCE_TABLE(object_new(TYPE_SPAPR_TCE_TABLE)); tcet->liobn = liobn; + tcet->page_shift = page_shift; tcet->nb_table = nb_table; object_property_add_child(OBJECT(owner), "tce-table", OBJECT(tcet), NULL); @@ -196,19 +203,20 @@ target_ulong tce) { IOMMUTLBEntry entry; + hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift); - if ((ioba >> SPAPR_TCE_PAGE_SHIFT) >= tcet->nb_table) { + if ((ioba >> tcet->page_shift) >= tcet->nb_table) { hcall_dprintf("spapr_vio_put_tce on out-of-bounds IOBA 0x" TARGET_FMT_lx "\n", ioba); return H_PARAMETER; } - tcet->table[ioba >> SPAPR_TCE_PAGE_SHIFT] = tce; + tcet->table[ioba >> tcet->page_shift] = 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.iova = ioba & page_mask; + entry.translated_addr = tce & page_mask; + entry.addr_mask = ~page_mask; entry.perm = tce; memory_region_notify_iommu(&tcet->iommu, entry); @@ -228,21 +236,25 @@ target_ulong ret = H_PARAMETER; sPAPRTCETable *tcet = spapr_tce_find_by_liobn(liobn); CPUState *cs = CPU(cpu); + hwaddr page_mask, page_size; if (!tcet) { return H_PARAMETER; } - if (npages > 512) { + if ((npages > 512) || (tce_list & SPAPR_TCE_PAGE_MASK)) { return H_PARAMETER; } - ioba &= ~SPAPR_TCE_PAGE_MASK; - tce_list &= ~SPAPR_TCE_PAGE_MASK; + page_mask = IOMMU_PAGE_MASK(tcet->page_shift); + page_size = IOMMU_PAGE_SIZE(tcet->page_shift); + ioba &= page_mask; - for (i = 0; i < npages; ++i, ioba += SPAPR_TCE_PAGE_SIZE) { - target_ulong tce = ldq_phys(cs->as, tce_list + - i * sizeof(target_ulong)); + for (i = 0; i < npages; ++i, ioba += page_size) { + target_ulong off = (tce_list & ~SPAPR_TCE_RW) + + i * sizeof(target_ulong); + target_ulong tce = ldq_phys(cs->as, off); + ret = put_tce_emu(tcet, ioba, tce); if (ret) { break; @@ -269,6 +281,7 @@ target_ulong npages = args[3]; target_ulong ret = H_PARAMETER; sPAPRTCETable *tcet = spapr_tce_find_by_liobn(liobn); + hwaddr page_mask, page_size; if (!tcet) { return H_PARAMETER; @@ -278,9 +291,11 @@ return H_PARAMETER; } - ioba &= ~SPAPR_TCE_PAGE_MASK; + page_mask = IOMMU_PAGE_MASK(tcet->page_shift); + page_size = IOMMU_PAGE_SIZE(tcet->page_shift); + ioba &= page_mask; - for (i = 0; i < npages; ++i, ioba += SPAPR_TCE_PAGE_SIZE) { + for (i = 0; i < npages; ++i, ioba += page_size) { ret = put_tce_emu(tcet, ioba, tce_value); if (ret) { break; @@ -300,9 +315,11 @@ target_ulong ret = H_PARAMETER; sPAPRTCETable *tcet = spapr_tce_find_by_liobn(liobn); - ioba &= ~(SPAPR_TCE_PAGE_SIZE - 1); - if (tcet) { + hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift); + + ioba &= page_mask; + ret = put_tce_emu(tcet, ioba, tce); } trace_spapr_iommu_put(liobn, ioba, tce, ret); @@ -313,13 +330,13 @@ static target_ulong get_tce_emu(sPAPRTCETable *tcet, target_ulong ioba, target_ulong *tce) { - if ((ioba >> SPAPR_TCE_PAGE_SHIFT) >= tcet->nb_table) { + if ((ioba >> tcet->page_shift) >= tcet->nb_table) { hcall_dprintf("spapr_iommu_get_tce on out-of-bounds IOBA 0x" TARGET_FMT_lx "\n", ioba); return H_PARAMETER; } - *tce = tcet->table[ioba >> SPAPR_TCE_PAGE_SHIFT]; + *tce = tcet->table[ioba >> tcet->page_shift]; return H_SUCCESS; } @@ -333,9 +350,11 @@ target_ulong ret = H_PARAMETER; sPAPRTCETable *tcet = spapr_tce_find_by_liobn(liobn); - ioba &= ~(SPAPR_TCE_PAGE_SIZE - 1); - if (tcet) { + hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift); + + ioba &= page_mask; + ret = get_tce_emu(tcet, ioba, &tce); if (!ret) { args[0] = tce; @@ -384,7 +403,7 @@ } return spapr_dma_dt(fdt, node_off, propname, - tcet->liobn, 0, tcet->nb_table << SPAPR_TCE_PAGE_SHIFT); + tcet->liobn, 0, tcet->nb_table << tcet->page_shift); } static void spapr_tce_table_class_init(ObjectClass *klass, void *data)
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c index fea8fb1..ee1ff9e 100644 --- a/hw/ppc/spapr_pci.c +++ b/hw/ppc/spapr_pci.c
@@ -656,6 +656,7 @@ sPAPRTCETable *tcet; tcet = spapr_tce_new_table(DEVICE(sphb), sphb->dma_liobn, + SPAPR_TCE_PAGE_SHIFT, 0x40000000 >> SPAPR_TCE_PAGE_SHIFT); if (!tcet) { error_setg(errp, "Unable to create TCE table for %s",
diff --git a/hw/ppc/spapr_vio.c b/hw/ppc/spapr_vio.c index ffd4348..75a9348 100644 --- a/hw/ppc/spapr_vio.c +++ b/hw/ppc/spapr_vio.c
@@ -457,6 +457,7 @@ if (pc->rtce_window_size) { uint32_t liobn = SPAPR_VIO_BASE_LIOBN | dev->reg; dev->tcet = spapr_tce_new_table(qdev, liobn, + SPAPR_TCE_PAGE_SHIFT, pc->rtce_window_size >> SPAPR_TCE_PAGE_SHIFT); address_space_init(&dev->as, spapr_tce_get_iommu(dev->tcet), qdev->id);
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 7a0bcc5..38e61cf 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h
@@ -398,6 +398,7 @@ DeviceState parent; uint32_t liobn; uint32_t nb_table; + uint32_t page_shift; uint64_t *table; bool bypass; int fd; @@ -409,6 +410,7 @@ void spapr_events_fdt_skel(void *fdt, uint32_t epow_irq); int spapr_h_cas_compose_response(target_ulong addr, target_ulong size); sPAPRTCETable *spapr_tce_new_table(DeviceState *owner, uint32_t liobn, + uint32_t page_shift, uint32_t nb_table); MemoryRegion *spapr_tce_get_iommu(sPAPRTCETable *tcet); void spapr_tce_set_bypass(sPAPRTCETable *tcet, bool bypass);