qemu/hw/ppc/spapr_iommu.c
<<
>>
Prefs
   1/*
   2 * QEMU sPAPR IOMMU (TCE) code
   3 *
   4 * Copyright (c) 2010 David Gibson, IBM Corporation <dwg@au1.ibm.com>
   5 *
   6 * This library is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU Lesser General Public
   8 * License as published by the Free Software Foundation; either
   9 * version 2.1 of the License, or (at your option) any later version.
  10 *
  11 * This library is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 * Lesser General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU Lesser General Public
  17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20#include "qemu/osdep.h"
  21#include "qemu/error-report.h"
  22#include "qemu/log.h"
  23#include "qemu/module.h"
  24#include "sysemu/kvm.h"
  25#include "kvm_ppc.h"
  26#include "migration/vmstate.h"
  27#include "sysemu/dma.h"
  28#include "trace.h"
  29
  30#include "hw/ppc/spapr.h"
  31#include "hw/ppc/spapr_vio.h"
  32
  33#include <libfdt.h>
  34
  35enum SpaprTceAccess {
  36    SPAPR_TCE_FAULT = 0,
  37    SPAPR_TCE_RO = 1,
  38    SPAPR_TCE_WO = 2,
  39    SPAPR_TCE_RW = 3,
  40};
  41
  42#define IOMMU_PAGE_SIZE(shift)      (1ULL << (shift))
  43#define IOMMU_PAGE_MASK(shift)      (~(IOMMU_PAGE_SIZE(shift) - 1))
  44
  45static QLIST_HEAD(, SpaprTceTable) spapr_tce_tables;
  46
  47SpaprTceTable *spapr_tce_find_by_liobn(target_ulong liobn)
  48{
  49    SpaprTceTable *tcet;
  50
  51    if (liobn & 0xFFFFFFFF00000000ULL) {
  52        hcall_dprintf("Request for out-of-bounds LIOBN 0x" TARGET_FMT_lx "\n",
  53                      liobn);
  54        return NULL;
  55    }
  56
  57    QLIST_FOREACH(tcet, &spapr_tce_tables, list) {
  58        if (tcet->liobn == (uint32_t)liobn) {
  59            return tcet;
  60        }
  61    }
  62
  63    return NULL;
  64}
  65
  66static IOMMUAccessFlags spapr_tce_iommu_access_flags(uint64_t tce)
  67{
  68    switch (tce & SPAPR_TCE_RW) {
  69    case SPAPR_TCE_FAULT:
  70        return IOMMU_NONE;
  71    case SPAPR_TCE_RO:
  72        return IOMMU_RO;
  73    case SPAPR_TCE_WO:
  74        return IOMMU_WO;
  75    default: /* SPAPR_TCE_RW */
  76        return IOMMU_RW;
  77    }
  78}
  79
  80static uint64_t *spapr_tce_alloc_table(uint32_t liobn,
  81                                       uint32_t page_shift,
  82                                       uint64_t bus_offset,
  83                                       uint32_t nb_table,
  84                                       int *fd,
  85                                       bool need_vfio)
  86{
  87    uint64_t *table = NULL;
  88
  89    if (kvm_enabled()) {
  90        table = kvmppc_create_spapr_tce(liobn, page_shift, bus_offset, nb_table,
  91                                        fd, need_vfio);
  92    }
  93
  94    if (!table) {
  95        *fd = -1;
  96        table = g_new0(uint64_t, nb_table);
  97    }
  98
  99    trace_spapr_iommu_new_table(liobn, table, *fd);
 100
 101    return table;
 102}
 103
 104static void spapr_tce_free_table(uint64_t *table, int fd, uint32_t nb_table)
 105{
 106    if (!kvm_enabled() ||
 107        (kvmppc_remove_spapr_tce(table, fd, nb_table) != 0)) {
 108        g_free(table);
 109    }
 110}
 111
 112/* Called from RCU critical section */
 113static IOMMUTLBEntry spapr_tce_translate_iommu(IOMMUMemoryRegion *iommu,
 114                                               hwaddr addr,
 115                                               IOMMUAccessFlags flag,
 116                                               int iommu_idx)
 117{
 118    SpaprTceTable *tcet = container_of(iommu, SpaprTceTable, iommu);
 119    uint64_t tce;
 120    IOMMUTLBEntry ret = {
 121        .target_as = &address_space_memory,
 122        .iova = 0,
 123        .translated_addr = 0,
 124        .addr_mask = ~(hwaddr)0,
 125        .perm = IOMMU_NONE,
 126    };
 127
 128    if ((addr >> tcet->page_shift) < tcet->nb_table) {
 129        /* Check if we are in bound */
 130        hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
 131
 132        tce = tcet->table[addr >> tcet->page_shift];
 133        ret.iova = addr & page_mask;
 134        ret.translated_addr = tce & page_mask;
 135        ret.addr_mask = ~page_mask;
 136        ret.perm = spapr_tce_iommu_access_flags(tce);
 137    }
 138    trace_spapr_iommu_xlate(tcet->liobn, addr, ret.translated_addr, ret.perm,
 139                            ret.addr_mask);
 140
 141    return ret;
 142}
 143
 144static void spapr_tce_replay(IOMMUMemoryRegion *iommu_mr, IOMMUNotifier *n)
 145{
 146    MemoryRegion *mr = MEMORY_REGION(iommu_mr);
 147    IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
 148    hwaddr addr, granularity;
 149    IOMMUTLBEntry iotlb;
 150    SpaprTceTable *tcet = container_of(iommu_mr, SpaprTceTable, iommu);
 151
 152    if (tcet->skipping_replay) {
 153        return;
 154    }
 155
 156    granularity = memory_region_iommu_get_min_page_size(iommu_mr);
 157
 158    for (addr = 0; addr < memory_region_size(mr); addr += granularity) {
 159        iotlb = imrc->translate(iommu_mr, addr, IOMMU_NONE, n->iommu_idx);
 160        if (iotlb.perm != IOMMU_NONE) {
 161            n->notify(n, &iotlb);
 162        }
 163
 164        /*
 165         * if (2^64 - MR size) < granularity, it's possible to get an
 166         * infinite loop here.  This should catch such a wraparound.
 167         */
 168        if ((addr + granularity) < addr) {
 169            break;
 170        }
 171    }
 172}
 173
 174static int spapr_tce_table_pre_save(void *opaque)
 175{
 176    SpaprTceTable *tcet = SPAPR_TCE_TABLE(opaque);
 177
 178    tcet->mig_table = tcet->table;
 179    tcet->mig_nb_table = tcet->nb_table;
 180
 181    trace_spapr_iommu_pre_save(tcet->liobn, tcet->mig_nb_table,
 182                               tcet->bus_offset, tcet->page_shift);
 183
 184    return 0;
 185}
 186
 187static uint64_t spapr_tce_get_min_page_size(IOMMUMemoryRegion *iommu)
 188{
 189    SpaprTceTable *tcet = container_of(iommu, SpaprTceTable, iommu);
 190
 191    return 1ULL << tcet->page_shift;
 192}
 193
 194static int spapr_tce_get_attr(IOMMUMemoryRegion *iommu,
 195                              enum IOMMUMemoryRegionAttr attr, void *data)
 196{
 197    SpaprTceTable *tcet = container_of(iommu, SpaprTceTable, iommu);
 198
 199    if (attr == IOMMU_ATTR_SPAPR_TCE_FD && kvmppc_has_cap_spapr_vfio()) {
 200        *(int *) data = tcet->fd;
 201        return 0;
 202    }
 203
 204    return -EINVAL;
 205}
 206
 207static int spapr_tce_notify_flag_changed(IOMMUMemoryRegion *iommu,
 208                                         IOMMUNotifierFlag old,
 209                                         IOMMUNotifierFlag new,
 210                                         Error **errp)
 211{
 212    struct SpaprTceTable *tbl = container_of(iommu, SpaprTceTable, iommu);
 213
 214    if (new & IOMMU_NOTIFIER_DEVIOTLB_UNMAP) {
 215        error_setg(errp, "spart_tce does not support dev-iotlb yet");
 216        return -EINVAL;
 217    }
 218
 219    if (old == IOMMU_NOTIFIER_NONE && new != IOMMU_NOTIFIER_NONE) {
 220        spapr_tce_set_need_vfio(tbl, true);
 221    } else if (old != IOMMU_NOTIFIER_NONE && new == IOMMU_NOTIFIER_NONE) {
 222        spapr_tce_set_need_vfio(tbl, false);
 223    }
 224    return 0;
 225}
 226
 227static int spapr_tce_table_post_load(void *opaque, int version_id)
 228{
 229    SpaprTceTable *tcet = SPAPR_TCE_TABLE(opaque);
 230    uint32_t old_nb_table = tcet->nb_table;
 231    uint64_t old_bus_offset = tcet->bus_offset;
 232    uint32_t old_page_shift = tcet->page_shift;
 233
 234    if (tcet->vdev) {
 235        spapr_vio_set_bypass(tcet->vdev, tcet->bypass);
 236    }
 237
 238    if (tcet->mig_nb_table != tcet->nb_table) {
 239        spapr_tce_table_disable(tcet);
 240    }
 241
 242    if (tcet->mig_nb_table) {
 243        if (!tcet->nb_table) {
 244            spapr_tce_table_enable(tcet, old_page_shift, old_bus_offset,
 245                                   tcet->mig_nb_table);
 246        }
 247
 248        memcpy(tcet->table, tcet->mig_table,
 249               tcet->nb_table * sizeof(tcet->table[0]));
 250
 251        free(tcet->mig_table);
 252        tcet->mig_table = NULL;
 253    }
 254
 255    trace_spapr_iommu_post_load(tcet->liobn, old_nb_table, tcet->nb_table,
 256                                tcet->bus_offset, tcet->page_shift);
 257
 258    return 0;
 259}
 260
 261static bool spapr_tce_table_ex_needed(void *opaque)
 262{
 263    SpaprTceTable *tcet = opaque;
 264
 265    return tcet->bus_offset || tcet->page_shift != 0xC;
 266}
 267
 268static const VMStateDescription vmstate_spapr_tce_table_ex = {
 269    .name = "spapr_iommu_ex",
 270    .version_id = 1,
 271    .minimum_version_id = 1,
 272    .needed = spapr_tce_table_ex_needed,
 273    .fields = (VMStateField[]) {
 274        VMSTATE_UINT64(bus_offset, SpaprTceTable),
 275        VMSTATE_UINT32(page_shift, SpaprTceTable),
 276        VMSTATE_END_OF_LIST()
 277    },
 278};
 279
 280static const VMStateDescription vmstate_spapr_tce_table = {
 281    .name = "spapr_iommu",
 282    .version_id = 3,
 283    .minimum_version_id = 2,
 284    .pre_save = spapr_tce_table_pre_save,
 285    .post_load = spapr_tce_table_post_load,
 286    .fields      = (VMStateField []) {
 287        /* Sanity check */
 288        VMSTATE_UINT32_EQUAL(liobn, SpaprTceTable, NULL),
 289
 290        /* IOMMU state */
 291        VMSTATE_UINT32(mig_nb_table, SpaprTceTable),
 292        VMSTATE_BOOL(bypass, SpaprTceTable),
 293        VMSTATE_VARRAY_UINT32_ALLOC(mig_table, SpaprTceTable, mig_nb_table, 0,
 294                                    vmstate_info_uint64, uint64_t),
 295        VMSTATE_BOOL_V(def_win, SpaprTceTable, 3),
 296
 297        VMSTATE_END_OF_LIST()
 298    },
 299    .subsections = (const VMStateDescription*[]) {
 300        &vmstate_spapr_tce_table_ex,
 301        NULL
 302    }
 303};
 304
 305static void spapr_tce_table_realize(DeviceState *dev, Error **errp)
 306{
 307    SpaprTceTable *tcet = SPAPR_TCE_TABLE(dev);
 308    Object *tcetobj = OBJECT(tcet);
 309    gchar *tmp;
 310
 311    tcet->fd = -1;
 312    tcet->need_vfio = false;
 313    tmp = g_strdup_printf("tce-root-%x", tcet->liobn);
 314    memory_region_init(&tcet->root, tcetobj, tmp, UINT64_MAX);
 315    g_free(tmp);
 316
 317    tmp = g_strdup_printf("tce-iommu-%x", tcet->liobn);
 318    memory_region_init_iommu(&tcet->iommu, sizeof(tcet->iommu),
 319                             TYPE_SPAPR_IOMMU_MEMORY_REGION,
 320                             tcetobj, tmp, 0);
 321    g_free(tmp);
 322
 323    QLIST_INSERT_HEAD(&spapr_tce_tables, tcet, list);
 324
 325    vmstate_register(VMSTATE_IF(tcet), tcet->liobn, &vmstate_spapr_tce_table,
 326                     tcet);
 327}
 328
 329void spapr_tce_set_need_vfio(SpaprTceTable *tcet, bool need_vfio)
 330{
 331    size_t table_size = tcet->nb_table * sizeof(uint64_t);
 332    uint64_t *oldtable;
 333    int newfd = -1;
 334
 335    g_assert(need_vfio != tcet->need_vfio);
 336
 337    tcet->need_vfio = need_vfio;
 338
 339    if (!need_vfio || (tcet->fd != -1 && kvmppc_has_cap_spapr_vfio())) {
 340        return;
 341    }
 342
 343    oldtable = tcet->table;
 344
 345    tcet->table = spapr_tce_alloc_table(tcet->liobn,
 346                                        tcet->page_shift,
 347                                        tcet->bus_offset,
 348                                        tcet->nb_table,
 349                                        &newfd,
 350                                        need_vfio);
 351    memcpy(tcet->table, oldtable, table_size);
 352
 353    spapr_tce_free_table(oldtable, tcet->fd, tcet->nb_table);
 354
 355    tcet->fd = newfd;
 356}
 357
 358SpaprTceTable *spapr_tce_new_table(DeviceState *owner, uint32_t liobn)
 359{
 360    SpaprTceTable *tcet;
 361    gchar *tmp;
 362
 363    if (spapr_tce_find_by_liobn(liobn)) {
 364        error_report("Attempted to create TCE table with duplicate"
 365                " LIOBN 0x%x", liobn);
 366        return NULL;
 367    }
 368
 369    tcet = SPAPR_TCE_TABLE(object_new(TYPE_SPAPR_TCE_TABLE));
 370    tcet->liobn = liobn;
 371
 372    tmp = g_strdup_printf("tce-table-%x", liobn);
 373    object_property_add_child(OBJECT(owner), tmp, OBJECT(tcet));
 374    g_free(tmp);
 375    object_unref(OBJECT(tcet));
 376
 377    qdev_realize(DEVICE(tcet), NULL, NULL);
 378
 379    return tcet;
 380}
 381
 382void spapr_tce_table_enable(SpaprTceTable *tcet,
 383                            uint32_t page_shift, uint64_t bus_offset,
 384                            uint32_t nb_table)
 385{
 386    if (tcet->nb_table) {
 387        warn_report("trying to enable already enabled TCE table");
 388        return;
 389    }
 390
 391    tcet->bus_offset = bus_offset;
 392    tcet->page_shift = page_shift;
 393    tcet->nb_table = nb_table;
 394    tcet->table = spapr_tce_alloc_table(tcet->liobn,
 395                                        tcet->page_shift,
 396                                        tcet->bus_offset,
 397                                        tcet->nb_table,
 398                                        &tcet->fd,
 399                                        tcet->need_vfio);
 400
 401    memory_region_set_size(MEMORY_REGION(&tcet->iommu),
 402                           (uint64_t)tcet->nb_table << tcet->page_shift);
 403    memory_region_add_subregion(&tcet->root, tcet->bus_offset,
 404                                MEMORY_REGION(&tcet->iommu));
 405}
 406
 407void spapr_tce_table_disable(SpaprTceTable *tcet)
 408{
 409    if (!tcet->nb_table) {
 410        return;
 411    }
 412
 413    memory_region_del_subregion(&tcet->root, MEMORY_REGION(&tcet->iommu));
 414    memory_region_set_size(MEMORY_REGION(&tcet->iommu), 0);
 415
 416    spapr_tce_free_table(tcet->table, tcet->fd, tcet->nb_table);
 417    tcet->fd = -1;
 418    tcet->table = NULL;
 419    tcet->bus_offset = 0;
 420    tcet->page_shift = 0;
 421    tcet->nb_table = 0;
 422}
 423
 424static void spapr_tce_table_unrealize(DeviceState *dev)
 425{
 426    SpaprTceTable *tcet = SPAPR_TCE_TABLE(dev);
 427
 428    vmstate_unregister(VMSTATE_IF(tcet), &vmstate_spapr_tce_table, tcet);
 429
 430    QLIST_REMOVE(tcet, list);
 431
 432    spapr_tce_table_disable(tcet);
 433}
 434
 435MemoryRegion *spapr_tce_get_iommu(SpaprTceTable *tcet)
 436{
 437    return &tcet->root;
 438}
 439
 440static void spapr_tce_reset(DeviceState *dev)
 441{
 442    SpaprTceTable *tcet = SPAPR_TCE_TABLE(dev);
 443    size_t table_size = tcet->nb_table * sizeof(uint64_t);
 444
 445    if (tcet->nb_table) {
 446        memset(tcet->table, 0, table_size);
 447    }
 448}
 449
 450static target_ulong put_tce_emu(SpaprTceTable *tcet, target_ulong ioba,
 451                                target_ulong tce)
 452{
 453    IOMMUTLBEvent event;
 454    hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
 455    unsigned long index = (ioba - tcet->bus_offset) >> tcet->page_shift;
 456
 457    if (index >= tcet->nb_table) {
 458        hcall_dprintf("spapr_vio_put_tce on out-of-bounds IOBA 0x"
 459                      TARGET_FMT_lx "\n", ioba);
 460        return H_PARAMETER;
 461    }
 462
 463    tcet->table[index] = tce;
 464
 465    event.entry.target_as = &address_space_memory,
 466    event.entry.iova = (ioba - tcet->bus_offset) & page_mask;
 467    event.entry.translated_addr = tce & page_mask;
 468    event.entry.addr_mask = ~page_mask;
 469    event.entry.perm = spapr_tce_iommu_access_flags(tce);
 470    event.type = event.entry.perm ? IOMMU_NOTIFIER_MAP : IOMMU_NOTIFIER_UNMAP;
 471    memory_region_notify_iommu(&tcet->iommu, 0, event);
 472
 473    return H_SUCCESS;
 474}
 475
 476static target_ulong h_put_tce_indirect(PowerPCCPU *cpu,
 477                                       SpaprMachineState *spapr,
 478                                       target_ulong opcode, target_ulong *args)
 479{
 480    int i;
 481    target_ulong liobn = args[0];
 482    target_ulong ioba = args[1];
 483    target_ulong ioba1 = ioba;
 484    target_ulong tce_list = args[2];
 485    target_ulong npages = args[3];
 486    target_ulong ret = H_PARAMETER, tce = 0;
 487    SpaprTceTable *tcet = spapr_tce_find_by_liobn(liobn);
 488    CPUState *cs = CPU(cpu);
 489    hwaddr page_mask, page_size;
 490
 491    if (!tcet) {
 492        return H_PARAMETER;
 493    }
 494
 495    if ((npages > 512) || (tce_list & SPAPR_TCE_PAGE_MASK)) {
 496        return H_PARAMETER;
 497    }
 498
 499    page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
 500    page_size = IOMMU_PAGE_SIZE(tcet->page_shift);
 501    ioba &= page_mask;
 502
 503    for (i = 0; i < npages; ++i, ioba += page_size) {
 504        tce = ldq_be_phys(cs->as, tce_list + i * sizeof(target_ulong));
 505
 506        ret = put_tce_emu(tcet, ioba, tce);
 507        if (ret) {
 508            break;
 509        }
 510    }
 511
 512    /* Trace last successful or the first problematic entry */
 513    i = i ? (i - 1) : 0;
 514    if (SPAPR_IS_PCI_LIOBN(liobn)) {
 515        trace_spapr_iommu_pci_indirect(liobn, ioba1, tce_list, i, tce, ret);
 516    } else {
 517        trace_spapr_iommu_indirect(liobn, ioba1, tce_list, i, tce, ret);
 518    }
 519    return ret;
 520}
 521
 522static target_ulong h_stuff_tce(PowerPCCPU *cpu, SpaprMachineState *spapr,
 523                              target_ulong opcode, target_ulong *args)
 524{
 525    int i;
 526    target_ulong liobn = args[0];
 527    target_ulong ioba = args[1];
 528    target_ulong tce_value = args[2];
 529    target_ulong npages = args[3];
 530    target_ulong ret = H_PARAMETER;
 531    SpaprTceTable *tcet = spapr_tce_find_by_liobn(liobn);
 532    hwaddr page_mask, page_size;
 533
 534    if (!tcet) {
 535        return H_PARAMETER;
 536    }
 537
 538    if (npages > tcet->nb_table) {
 539        return H_PARAMETER;
 540    }
 541
 542    page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
 543    page_size = IOMMU_PAGE_SIZE(tcet->page_shift);
 544    ioba &= page_mask;
 545
 546    for (i = 0; i < npages; ++i, ioba += page_size) {
 547        ret = put_tce_emu(tcet, ioba, tce_value);
 548        if (ret) {
 549            break;
 550        }
 551    }
 552    if (SPAPR_IS_PCI_LIOBN(liobn)) {
 553        trace_spapr_iommu_pci_stuff(liobn, ioba, tce_value, npages, ret);
 554    } else {
 555        trace_spapr_iommu_stuff(liobn, ioba, tce_value, npages, ret);
 556    }
 557
 558    return ret;
 559}
 560
 561static target_ulong h_put_tce(PowerPCCPU *cpu, SpaprMachineState *spapr,
 562                              target_ulong opcode, target_ulong *args)
 563{
 564    target_ulong liobn = args[0];
 565    target_ulong ioba = args[1];
 566    target_ulong tce = args[2];
 567    target_ulong ret = H_PARAMETER;
 568    SpaprTceTable *tcet = spapr_tce_find_by_liobn(liobn);
 569
 570    if (tcet) {
 571        hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
 572
 573        ioba &= page_mask;
 574
 575        ret = put_tce_emu(tcet, ioba, tce);
 576    }
 577    if (SPAPR_IS_PCI_LIOBN(liobn)) {
 578        trace_spapr_iommu_pci_put(liobn, ioba, tce, ret);
 579    } else {
 580        trace_spapr_iommu_put(liobn, ioba, tce, ret);
 581    }
 582
 583    return ret;
 584}
 585
 586static target_ulong get_tce_emu(SpaprTceTable *tcet, target_ulong ioba,
 587                                target_ulong *tce)
 588{
 589    unsigned long index = (ioba - tcet->bus_offset) >> tcet->page_shift;
 590
 591    if (index >= tcet->nb_table) {
 592        hcall_dprintf("spapr_iommu_get_tce on out-of-bounds IOBA 0x"
 593                      TARGET_FMT_lx "\n", ioba);
 594        return H_PARAMETER;
 595    }
 596
 597    *tce = tcet->table[index];
 598
 599    return H_SUCCESS;
 600}
 601
 602static target_ulong h_get_tce(PowerPCCPU *cpu, SpaprMachineState *spapr,
 603                              target_ulong opcode, target_ulong *args)
 604{
 605    target_ulong liobn = args[0];
 606    target_ulong ioba = args[1];
 607    target_ulong tce = 0;
 608    target_ulong ret = H_PARAMETER;
 609    SpaprTceTable *tcet = spapr_tce_find_by_liobn(liobn);
 610
 611    if (tcet) {
 612        hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
 613
 614        ioba &= page_mask;
 615
 616        ret = get_tce_emu(tcet, ioba, &tce);
 617        if (!ret) {
 618            args[0] = tce;
 619        }
 620    }
 621    if (SPAPR_IS_PCI_LIOBN(liobn)) {
 622        trace_spapr_iommu_pci_get(liobn, ioba, ret, tce);
 623    } else {
 624        trace_spapr_iommu_get(liobn, ioba, ret, tce);
 625    }
 626
 627    return ret;
 628}
 629
 630int spapr_dma_dt(void *fdt, int node_off, const char *propname,
 631                 uint32_t liobn, uint64_t window, uint32_t size)
 632{
 633    uint32_t dma_prop[5];
 634    int ret;
 635
 636    dma_prop[0] = cpu_to_be32(liobn);
 637    dma_prop[1] = cpu_to_be32(window >> 32);
 638    dma_prop[2] = cpu_to_be32(window & 0xFFFFFFFF);
 639    dma_prop[3] = 0; /* window size is 32 bits */
 640    dma_prop[4] = cpu_to_be32(size);
 641
 642    ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-address-cells", 2);
 643    if (ret < 0) {
 644        return ret;
 645    }
 646
 647    ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-size-cells", 2);
 648    if (ret < 0) {
 649        return ret;
 650    }
 651
 652    ret = fdt_setprop(fdt, node_off, propname, dma_prop, sizeof(dma_prop));
 653    if (ret < 0) {
 654        return ret;
 655    }
 656
 657    return 0;
 658}
 659
 660int spapr_tcet_dma_dt(void *fdt, int node_off, const char *propname,
 661                      SpaprTceTable *tcet)
 662{
 663    if (!tcet) {
 664        return 0;
 665    }
 666
 667    return spapr_dma_dt(fdt, node_off, propname,
 668                        tcet->liobn, 0, tcet->nb_table << tcet->page_shift);
 669}
 670
 671static void spapr_tce_table_class_init(ObjectClass *klass, void *data)
 672{
 673    DeviceClass *dc = DEVICE_CLASS(klass);
 674    dc->realize = spapr_tce_table_realize;
 675    dc->reset = spapr_tce_reset;
 676    dc->unrealize = spapr_tce_table_unrealize;
 677    /* Reason: This is just an internal device for handling the hypercalls */
 678    dc->user_creatable = false;
 679
 680    QLIST_INIT(&spapr_tce_tables);
 681
 682    /* hcall-tce */
 683    spapr_register_hypercall(H_PUT_TCE, h_put_tce);
 684    spapr_register_hypercall(H_GET_TCE, h_get_tce);
 685    spapr_register_hypercall(H_PUT_TCE_INDIRECT, h_put_tce_indirect);
 686    spapr_register_hypercall(H_STUFF_TCE, h_stuff_tce);
 687}
 688
 689static const TypeInfo spapr_tce_table_info = {
 690    .name = TYPE_SPAPR_TCE_TABLE,
 691    .parent = TYPE_DEVICE,
 692    .instance_size = sizeof(SpaprTceTable),
 693    .class_init = spapr_tce_table_class_init,
 694};
 695
 696static void spapr_iommu_memory_region_class_init(ObjectClass *klass, void *data)
 697{
 698    IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass);
 699
 700    imrc->translate = spapr_tce_translate_iommu;
 701    imrc->replay = spapr_tce_replay;
 702    imrc->get_min_page_size = spapr_tce_get_min_page_size;
 703    imrc->notify_flag_changed = spapr_tce_notify_flag_changed;
 704    imrc->get_attr = spapr_tce_get_attr;
 705}
 706
 707static const TypeInfo spapr_iommu_memory_region_info = {
 708    .parent = TYPE_IOMMU_MEMORY_REGION,
 709    .name = TYPE_SPAPR_IOMMU_MEMORY_REGION,
 710    .class_init = spapr_iommu_memory_region_class_init,
 711};
 712
 713static void register_types(void)
 714{
 715    type_register_static(&spapr_tce_table_info);
 716    type_register_static(&spapr_iommu_memory_region_info);
 717}
 718
 719type_init(register_types);
 720