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