hw/dma/xilinx_axidma.c

   1 /*
   2  * QEMU model of Xilinx AXI-DMA block.
   3  *
   4  * Copyright (c) 2011 Edgar E. Iglesias.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "hw/sysbus.h"
  26 #include "qemu/timer.h"
  27 #include "hw/ptimer.h"
  28 #include "qemu/log.h"
  29 #include "qapi/qmp/qerror.h"
  30
  31 #include "hw/stream.h"
  32
  33 #define D(x)
  34
  35 #define TYPE_XILINX_AXI_DMA "xlnx.axi-dma"
  36 #define TYPE_XILINX_AXI_DMA_DATA_STREAM "xilinx-axi-dma-data-stream"
  37 #define TYPE_XILINX_AXI_DMA_CONTROL_STREAM "xilinx-axi-dma-control-stream"
  38
  39 #define XILINX_AXI_DMA(obj) \
  40      OBJECT_CHECK(XilinxAXIDMA, (obj), TYPE_XILINX_AXI_DMA)
  41
  42 #define XILINX_AXI_DMA_DATA_STREAM(obj) \
  43      OBJECT_CHECK(XilinxAXIDMAStreamSlave, (obj),\
  44      TYPE_XILINX_AXI_DMA_DATA_STREAM)
  45
  46 #define XILINX_AXI_DMA_CONTROL_STREAM(obj) \
  47      OBJECT_CHECK(XilinxAXIDMAStreamSlave, (obj),\
  48      TYPE_XILINX_AXI_DMA_CONTROL_STREAM)
  49
  50 #define R_DMACR             (0x00 / 4)
  51 #define R_DMASR             (0x04 / 4)
  52 #define R_CURDESC           (0x08 / 4)
  53 #define R_TAILDESC          (0x10 / 4)
  54 #define R_MAX               (0x30 / 4)
  55
  56 #define CONTROL_PAYLOAD_WORDS 5
  57 #define CONTROL_PAYLOAD_SIZE (CONTROL_PAYLOAD_WORDS * (sizeof(uint32_t)))
  58
  59 typedef struct XilinxAXIDMA XilinxAXIDMA;
  60 typedef struct XilinxAXIDMAStreamSlave XilinxAXIDMAStreamSlave;
  61
  62 enum {
  63     DMACR_RUNSTOP = 1,
  64     DMACR_TAILPTR_MODE = 2,
  65     DMACR_RESET = 4
  66 };
  67
  68 enum {
  69     DMASR_HALTED = 1,
  70     DMASR_IDLE  = 2,
  71     DMASR_IOC_IRQ  = 1 << 12,
  72     DMASR_DLY_IRQ  = 1 << 13,
  73
  74     DMASR_IRQ_MASK = 7 << 12
  75 };
  76
  77 struct SDesc {
  78     uint64_t nxtdesc;
  79     uint64_t buffer_address;
  80     uint64_t reserved;
  81     uint32_t control;
  82     uint32_t status;
  83     uint8_t app[CONTROL_PAYLOAD_SIZE];
  84 };
  85
  86 enum {
  87     SDESC_CTRL_EOF = (1 << 26),
  88     SDESC_CTRL_SOF = (1 << 27),
  89
  90     SDESC_CTRL_LEN_MASK = (1 << 23) - 1
  91 };
  92
  93 enum {
  94     SDESC_STATUS_EOF = (1 << 26),
  95     SDESC_STATUS_SOF_BIT = 27,
  96     SDESC_STATUS_SOF = (1 << SDESC_STATUS_SOF_BIT),
  97     SDESC_STATUS_COMPLETE = (1 << 31)
  98 };
  99
 100 struct Stream {
 101     QEMUBH *bh;
 102     ptimer_state *ptimer;
 103     qemu_irq irq;
 104
 105     int nr;
 106
 107     struct SDesc desc;
 108     int pos;
 109     unsigned int complete_cnt;
 110     uint32_t regs[R_MAX];
 111     uint8_t app[20];
 112 };
 113
 114 struct XilinxAXIDMAStreamSlave {
 115     Object parent;
 116
 117     struct XilinxAXIDMA *dma;
 118 };
 119
 120 struct XilinxAXIDMA {
 121     SysBusDevice busdev;
 122     MemoryRegion iomem;
 123     uint32_t freqhz;
 124     StreamSlave *tx_data_dev;
 125     StreamSlave *tx_control_dev;
 126     XilinxAXIDMAStreamSlave rx_data_dev;
 127     XilinxAXIDMAStreamSlave rx_control_dev;
 128
 129     struct Stream streams[2];
 130
 131     StreamCanPushNotifyFn notify;
 132     void *notify_opaque;
 133 };
 134
 135 /*
 136  * Helper calls to extract info from desriptors and other trivial
 137  * state from regs.
 138  */
 139 static inline int stream_desc_sof(struct SDesc *d)
 140 {
 141     return d->control & SDESC_CTRL_SOF;
 142 }
 143
 144 static inline int stream_desc_eof(struct SDesc *d)
 145 {
 146     return d->control & SDESC_CTRL_EOF;
 147 }
 148
 149 static inline int stream_resetting(struct Stream *s)
 150 {
 151     return !!(s->regs[R_DMACR] & DMACR_RESET);
 152 }
 153
 154 static inline int stream_running(struct Stream *s)
 155 {
 156     return s->regs[R_DMACR] & DMACR_RUNSTOP;
 157 }
 158
 159 static inline int stream_halted(struct Stream *s)
 160 {
 161     return s->regs[R_DMASR] & DMASR_HALTED;
 162 }
 163
 164 static inline int stream_idle(struct Stream *s)
 165 {
 166     return !!(s->regs[R_DMASR] & DMASR_IDLE);
 167 }
 168
 169 static void stream_reset(struct Stream *s)
 170 {
 171     s->regs[R_DMASR] = DMASR_HALTED;  /* starts up halted.  */
 172     s->regs[R_DMACR] = 1 << 16; /* Starts with one in compl threshold.  */
 173 }
 174
 175 /* Map an offset addr into a channel index.  */
 176 static inline int streamid_from_addr(hwaddr addr)
 177 {
 178     int sid;
 179
 180     sid = addr / (0x30);
 181     sid &= 1;
 182     return sid;
 183 }
 184
 185 #ifdef DEBUG_ENET
 186 static void stream_desc_show(struct SDesc *d)
 187 {
 188     qemu_log("buffer_addr  = " PRIx64 "\n", d->buffer_address);
 189     qemu_log("nxtdesc      = " PRIx64 "\n", d->nxtdesc);
 190     qemu_log("control      = %x\n", d->control);
 191     qemu_log("status       = %x\n", d->status);
 192 }
 193 #endif
 194
 195 static void stream_desc_load(struct Stream *s, hwaddr addr)
 196 {
 197     struct SDesc *d = &s->desc;
 198
 199     cpu_physical_memory_read(addr, d, sizeof *d);
 200
 201     /* Convert from LE into host endianness.  */
 202     d->buffer_address = le64_to_cpu(d->buffer_address);
 203     d->nxtdesc = le64_to_cpu(d->nxtdesc);
 204     d->control = le32_to_cpu(d->control);
 205     d->status = le32_to_cpu(d->status);
 206 }
 207
 208 static void stream_desc_store(struct Stream *s, hwaddr addr)
 209 {
 210     struct SDesc *d = &s->desc;
 211
 212     /* Convert from host endianness into LE.  */
 213     d->buffer_address = cpu_to_le64(d->buffer_address);
 214     d->nxtdesc = cpu_to_le64(d->nxtdesc);
 215     d->control = cpu_to_le32(d->control);
 216     d->status = cpu_to_le32(d->status);
 217     cpu_physical_memory_write(addr, d, sizeof *d);
 218 }
 219
 220 static void stream_update_irq(struct Stream *s)
 221 {
 222     unsigned int pending, mask, irq;
 223
 224     pending = s->regs[R_DMASR] & DMASR_IRQ_MASK;
 225     mask = s->regs[R_DMACR] & DMASR_IRQ_MASK;
 226
 227     irq = pending & mask;
 228
 229     qemu_set_irq(s->irq, !!irq);
 230 }
 231
 232 static void stream_reload_complete_cnt(struct Stream *s)
 233 {
 234     unsigned int comp_th;
 235     comp_th = (s->regs[R_DMACR] >> 16) & 0xff;
 236     s->complete_cnt = comp_th;
 237 }
 238
 239 static void timer_hit(void *opaque)
 240 {
 241     struct Stream *s = opaque;
 242
 243     stream_reload_complete_cnt(s);
 244     s->regs[R_DMASR] |= DMASR_DLY_IRQ;
 245     stream_update_irq(s);
 246 }
 247
 248 static void stream_complete(struct Stream *s)
 249 {
 250     unsigned int comp_delay;
 251
 252     /* Start the delayed timer.  */
 253     comp_delay = s->regs[R_DMACR] >> 24;
 254     if (comp_delay) {
 255         ptimer_stop(s->ptimer);
 256         ptimer_set_count(s->ptimer, comp_delay);
 257         ptimer_run(s->ptimer, 1);
 258     }
 259
 260     s->complete_cnt--;
 261     if (s->complete_cnt == 0) {
 262         /* Raise the IOC irq.  */
 263         s->regs[R_DMASR] |= DMASR_IOC_IRQ;
 264         stream_reload_complete_cnt(s);
 265     }
 266 }
 267
 268 static void stream_process_mem2s(struct Stream *s, StreamSlave *tx_data_dev,
 269                                  StreamSlave *tx_control_dev)
 270 {
 271     uint32_t prev_d;
 272     unsigned char txbuf[16 * 1024];
 273     unsigned int txlen;
 274
 275     if (!stream_running(s) || stream_idle(s)) {
 276         return;
 277     }
 278
 279     while (1) {
 280         stream_desc_load(s, s->regs[R_CURDESC]);
 281
 282         if (s->desc.status & SDESC_STATUS_COMPLETE) {
 283             s->regs[R_DMASR] |= DMASR_HALTED;
 284             break;
 285         }
 286
 287         if (stream_desc_sof(&s->desc)) {
 288             s->pos = 0;
 289             stream_push(tx_control_dev, s->desc.app, sizeof(s->desc.app));
 290         }
 291
 292         txlen = s->desc.control & SDESC_CTRL_LEN_MASK;
 293         if ((txlen + s->pos) > sizeof txbuf) {
 294             hw_error("%s: too small internal txbuf! %d\n", __func__,
 295                      txlen + s->pos);
 296         }
 297
 298         cpu_physical_memory_read(s->desc.buffer_address,
 299                                  txbuf + s->pos, txlen);
 300         s->pos += txlen;
 301
 302         if (stream_desc_eof(&s->desc)) {
 303             stream_push(tx_data_dev, txbuf, s->pos);
 304             s->pos = 0;
 305             stream_complete(s);
 306         }
 307
 308         /* Update the descriptor.  */
 309         s->desc.status = txlen | SDESC_STATUS_COMPLETE;
 310         stream_desc_store(s, s->regs[R_CURDESC]);
 311
 312         /* Advance.  */
 313         prev_d = s->regs[R_CURDESC];
 314         s->regs[R_CURDESC] = s->desc.nxtdesc;
 315         if (prev_d == s->regs[R_TAILDESC]) {
 316             s->regs[R_DMASR] |= DMASR_IDLE;
 317             break;
 318         }
 319     }
 320 }
 321
 322 static size_t stream_process_s2mem(struct Stream *s, unsigned char *buf,
 323                                    size_t len)
 324 {
 325     uint32_t prev_d;
 326     unsigned int rxlen;
 327     size_t pos = 0;
 328     int sof = 1;
 329
 330     if (!stream_running(s) || stream_idle(s)) {
 331         return 0;
 332     }
 333
 334     while (len) {
 335         stream_desc_load(s, s->regs[R_CURDESC]);
 336
 337         if (s->desc.status & SDESC_STATUS_COMPLETE) {
 338             s->regs[R_DMASR] |= DMASR_HALTED;
 339             break;
 340         }
 341
 342         rxlen = s->desc.control & SDESC_CTRL_LEN_MASK;
 343         if (rxlen > len) {
 344             /* It fits.  */
 345             rxlen = len;
 346         }
 347
 348         cpu_physical_memory_write(s->desc.buffer_address, buf + pos, rxlen);
 349         len -= rxlen;
 350         pos += rxlen;
 351
 352         /* Update the descriptor.  */
 353         if (!len) {
 354             stream_complete(s);
 355             memcpy(s->desc.app, s->app, sizeof(s->desc.app));
 356             s->desc.status |= SDESC_STATUS_EOF;
 357         }
 358
 359         s->desc.status |= sof << SDESC_STATUS_SOF_BIT;
 360         s->desc.status |= SDESC_STATUS_COMPLETE;
 361         stream_desc_store(s, s->regs[R_CURDESC]);
 362         sof = 0;
 363
 364         /* Advance.  */
 365         prev_d = s->regs[R_CURDESC];
 366         s->regs[R_CURDESC] = s->desc.nxtdesc;
 367         if (prev_d == s->regs[R_TAILDESC]) {
 368             s->regs[R_DMASR] |= DMASR_IDLE;
 369             break;
 370         }
 371     }
 372
 373     return pos;
 374 }
 375
 376 static void xilinx_axidma_reset(DeviceState *dev)
 377 {
 378     int i;
 379     XilinxAXIDMA *s = XILINX_AXI_DMA(dev);
 380
 381     for (i = 0; i < 2; i++) {
 382         stream_reset(&s->streams[i]);
 383     }
 384 }
 385
 386 static size_t
 387 xilinx_axidma_control_stream_push(StreamSlave *obj, unsigned char *buf,
 388                                   size_t len)
 389 {
 390     XilinxAXIDMAStreamSlave *cs = XILINX_AXI_DMA_CONTROL_STREAM(obj);
 391     struct Stream *s = &cs->dma->streams[1];
 392
 393     if (len != CONTROL_PAYLOAD_SIZE) {
 394         hw_error("AXI DMA requires %d byte control stream payload\n",
 395                  (int)CONTROL_PAYLOAD_SIZE);
 396     }
 397
 398     memcpy(s->app, buf, len);
 399     return len;
 400 }
 401
 402 static bool
 403 xilinx_axidma_data_stream_can_push(StreamSlave *obj,
 404                                    StreamCanPushNotifyFn notify,
 405                                    void *notify_opaque)
 406 {
 407     XilinxAXIDMAStreamSlave *ds = XILINX_AXI_DMA_DATA_STREAM(obj);
 408     struct Stream *s = &ds->dma->streams[1];
 409
 410     if (!stream_running(s) || stream_idle(s)) {
 411         ds->dma->notify = notify;
 412         ds->dma->notify_opaque = notify_opaque;
 413         return false;
 414     }
 415
 416     return true;
 417 }
 418
 419 static size_t
 420 xilinx_axidma_data_stream_push(StreamSlave *obj, unsigned char *buf, size_t len)
 421 {
 422     XilinxAXIDMAStreamSlave *ds = XILINX_AXI_DMA_DATA_STREAM(obj);
 423     struct Stream *s = &ds->dma->streams[1];
 424     size_t ret;
 425
 426     ret = stream_process_s2mem(s, buf, len);
 427     stream_update_irq(s);
 428     return ret;
 429 }
 430
 431 static uint64_t axidma_read(void *opaque, hwaddr addr,
 432                             unsigned size)
 433 {
 434     XilinxAXIDMA *d = opaque;
 435     struct Stream *s;
 436     uint32_t r = 0;
 437     int sid;
 438
 439     sid = streamid_from_addr(addr);
 440     s = &d->streams[sid];
 441
 442     addr = addr % 0x30;
 443     addr >>= 2;
 444     switch (addr) {
 445         case R_DMACR:
 446             /* Simulate one cycles reset delay.  */
 447             s->regs[addr] &= ~DMACR_RESET;
 448             r = s->regs[addr];
 449             break;
 450         case R_DMASR:
 451             s->regs[addr] &= 0xffff;
 452             s->regs[addr] |= (s->complete_cnt & 0xff) << 16;
 453             s->regs[addr] |= (ptimer_get_count(s->ptimer) & 0xff) << 24;
 454             r = s->regs[addr];
 455             break;
 456         default:
 457             r = s->regs[addr];
 458             D(qemu_log("%s ch=%d addr=" TARGET_FMT_plx " v=%x\n",
 459                            __func__, sid, addr * 4, r));
 460             break;
 461     }
 462     return r;
 463
 464 }
 465
 466 static void axidma_write(void *opaque, hwaddr addr,
 467                          uint64_t value, unsigned size)
 468 {
 469     XilinxAXIDMA *d = opaque;
 470     struct Stream *s;
 471     int sid;
 472
 473     sid = streamid_from_addr(addr);
 474     s = &d->streams[sid];
 475
 476     addr = addr % 0x30;
 477     addr >>= 2;
 478     switch (addr) {
 479         case R_DMACR:
 480             /* Tailptr mode is always on.  */
 481             value |= DMACR_TAILPTR_MODE;
 482             /* Remember our previous reset state.  */
 483             value |= (s->regs[addr] & DMACR_RESET);
 484             s->regs[addr] = value;
 485
 486             if (value & DMACR_RESET) {
 487                 stream_reset(s);
 488             }
 489
 490             if ((value & 1) && !stream_resetting(s)) {
 491                 /* Start processing.  */
 492                 s->regs[R_DMASR] &= ~(DMASR_HALTED | DMASR_IDLE);
 493             }
 494             stream_reload_complete_cnt(s);
 495             break;
 496
 497         case R_DMASR:
 498             /* Mask away write to clear irq lines.  */
 499             value &= ~(value & DMASR_IRQ_MASK);
 500             s->regs[addr] = value;
 501             break;
 502
 503         case R_TAILDESC:
 504             s->regs[addr] = value;
 505             s->regs[R_DMASR] &= ~DMASR_IDLE; /* Not idle.  */
 506             if (!sid) {
 507                 stream_process_mem2s(s, d->tx_data_dev, d->tx_control_dev);
 508             }
 509             break;
 510         default:
 511             D(qemu_log("%s: ch=%d addr=" TARGET_FMT_plx " v=%x\n",
 512                   __func__, sid, addr * 4, (unsigned)value));
 513             s->regs[addr] = value;
 514             break;
 515     }
 516     if (sid == 1 && d->notify) {
 517         StreamCanPushNotifyFn notifytmp = d->notify;
 518         d->notify = NULL;
 519         notifytmp(d->notify_opaque);
 520     }
 521     stream_update_irq(s);
 522 }
 523
 524 static const MemoryRegionOps axidma_ops = {
 525     .read = axidma_read,
 526     .write = axidma_write,
 527     .endianness = DEVICE_NATIVE_ENDIAN,
 528 };
 529
 530 static void xilinx_axidma_realize(DeviceState *dev, Error **errp)
 531 {
 532     XilinxAXIDMA *s = XILINX_AXI_DMA(dev);
 533     XilinxAXIDMAStreamSlave *ds = XILINX_AXI_DMA_DATA_STREAM(&s->rx_data_dev);
 534     XilinxAXIDMAStreamSlave *cs = XILINX_AXI_DMA_CONTROL_STREAM(
 535                                                             &s->rx_control_dev);
 536     Error *local_errp = NULL;
 537
 538     object_property_add_link(OBJECT(ds), "dma", TYPE_XILINX_AXI_DMA,
 539                              (Object **)&ds->dma, &local_errp);
 540     object_property_add_link(OBJECT(cs), "dma", TYPE_XILINX_AXI_DMA,
 541                              (Object **)&cs->dma, &local_errp);
 542     if (local_errp) {
 543         goto xilinx_axidma_realize_fail;
 544     }
 545     object_property_set_link(OBJECT(ds), OBJECT(s), "dma", &local_errp);
 546     object_property_set_link(OBJECT(cs), OBJECT(s), "dma", &local_errp);
 547     if (local_errp) {
 548         goto xilinx_axidma_realize_fail;
 549     }
 550
 551     int i;
 552
 553     for (i = 0; i < 2; i++) {
 554         s->streams[i].nr = i;
 555         s->streams[i].bh = qemu_bh_new(timer_hit, &s->streams[i]);
 556         s->streams[i].ptimer = ptimer_init(s->streams[i].bh);
 557         ptimer_set_freq(s->streams[i].ptimer, s->freqhz);
 558     }
 559     return;
 560
 561 xilinx_axidma_realize_fail:
 562     if (!*errp) {
 563         *errp = local_errp;
 564     }
 565 }
 566
 567 static void xilinx_axidma_init(Object *obj)
 568 {
 569     XilinxAXIDMA *s = XILINX_AXI_DMA(obj);
 570     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
 571     Error *errp = NULL;
 572
 573     object_property_add_link(obj, "axistream-connected", TYPE_STREAM_SLAVE,
 574                              (Object **) &s->tx_data_dev, &errp);
 575     assert_no_error(errp);
 576     object_property_add_link(obj, "axistream-control-connected",
 577                              TYPE_STREAM_SLAVE,
 578                              (Object **) &s->tx_control_dev, &errp);
 579     assert_no_error(errp);
 580
 581     object_initialize(&s->rx_data_dev, TYPE_XILINX_AXI_DMA_DATA_STREAM);
 582     object_initialize(&s->rx_control_dev, TYPE_XILINX_AXI_DMA_CONTROL_STREAM);
 583     object_property_add_child(OBJECT(s), "axistream-connected-target",
 584                               (Object *)&s->rx_data_dev, &errp);
 585     assert_no_error(errp);
 586     object_property_add_child(OBJECT(s), "axistream-control-connected-target",
 587                               (Object *)&s->rx_control_dev, &errp);
 588     assert_no_error(errp);
 589
 590     sysbus_init_irq(sbd, &s->streams[0].irq);
 591     sysbus_init_irq(sbd, &s->streams[1].irq);
 592
 593     memory_region_init_io(&s->iomem, obj, &axidma_ops, s,
 594                           "xlnx.axi-dma", R_MAX * 4 * 2);
 595     sysbus_init_mmio(sbd, &s->iomem);
 596 }
 597
 598 static Property axidma_properties[] = {
 599     DEFINE_PROP_UINT32("freqhz", XilinxAXIDMA, freqhz, 50000000),
 600     DEFINE_PROP_END_OF_LIST(),
 601 };
 602
 603 static void axidma_class_init(ObjectClass *klass, void *data)
 604 {
 605     DeviceClass *dc = DEVICE_CLASS(klass);
 606
 607     dc->realize = xilinx_axidma_realize,
 608     dc->reset = xilinx_axidma_reset;
 609     dc->props = axidma_properties;
 610 }
 611
 612 static StreamSlaveClass xilinx_axidma_data_stream_class = {
 613     .push = xilinx_axidma_data_stream_push,
 614     .can_push = xilinx_axidma_data_stream_can_push,
 615 };
 616
 617 static StreamSlaveClass xilinx_axidma_control_stream_class = {
 618     .push = xilinx_axidma_control_stream_push,
 619 };
 620
 621 static void xilinx_axidma_stream_class_init(ObjectClass *klass, void *data)
 622 {
 623     StreamSlaveClass *ssc = STREAM_SLAVE_CLASS(klass);
 624
 625     ssc->push = ((StreamSlaveClass *)data)->push;
 626     ssc->can_push = ((StreamSlaveClass *)data)->can_push;
 627 }
 628
 629 static const TypeInfo axidma_info = {
 630     .name          = TYPE_XILINX_AXI_DMA,
 631     .parent        = TYPE_SYS_BUS_DEVICE,
 632     .instance_size = sizeof(XilinxAXIDMA),
 633     .class_init    = axidma_class_init,
 634     .instance_init = xilinx_axidma_init,
 635 };
 636
 637 static const TypeInfo xilinx_axidma_data_stream_info = {
 638     .name          = TYPE_XILINX_AXI_DMA_DATA_STREAM,
 639     .parent        = TYPE_OBJECT,
 640     .instance_size = sizeof(struct XilinxAXIDMAStreamSlave),
 641     .class_init    = xilinx_axidma_stream_class_init,
 642     .class_data    = &xilinx_axidma_data_stream_class,
 643     .interfaces = (InterfaceInfo[]) {
 644         { TYPE_STREAM_SLAVE },
 645         { }
 646     }
 647 };
 648
 649 static const TypeInfo xilinx_axidma_control_stream_info = {
 650     .name          = TYPE_XILINX_AXI_DMA_CONTROL_STREAM,
 651     .parent        = TYPE_OBJECT,
 652     .instance_size = sizeof(struct XilinxAXIDMAStreamSlave),
 653     .class_init    = xilinx_axidma_stream_class_init,
 654     .class_data    = &xilinx_axidma_control_stream_class,
 655     .interfaces = (InterfaceInfo[]) {
 656         { TYPE_STREAM_SLAVE },
 657         { }
 658     }
 659 };
 660
 661 static void xilinx_axidma_register_types(void)
 662 {
 663     type_register_static(&axidma_info);
 664     type_register_static(&xilinx_axidma_data_stream_info);
 665     type_register_static(&xilinx_axidma_control_stream_info);
 666 }
 667
 668 type_init(xilinx_axidma_register_types)