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