qemu/hw/dma/omap_dma.c
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   1/*
   2 * TI OMAP DMA gigacell.
   3 *
   4 * Copyright (C) 2006-2008 Andrzej Zaborowski  <balrog@zabor.org>
   5 * Copyright (C) 2007-2008 Lauro Ramos Venancio  <lauro.venancio@indt.org.br>
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License as
   9 * published by the Free Software Foundation; either version 2 of
  10 * the License, or (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License along
  18 * with this program; if not, see <http://www.gnu.org/licenses/>.
  19 */
  20#include "qemu/osdep.h"
  21#include "qemu-common.h"
  22#include "qemu/timer.h"
  23#include "hw/arm/omap.h"
  24#include "hw/irq.h"
  25#include "hw/arm/soc_dma.h"
  26
  27struct omap_dma_channel_s {
  28    /* transfer data */
  29    int burst[2];
  30    int pack[2];
  31    int endian[2];
  32    int endian_lock[2];
  33    int translate[2];
  34    enum omap_dma_port port[2];
  35    hwaddr addr[2];
  36    omap_dma_addressing_t mode[2];
  37    uint32_t elements;
  38    uint16_t frames;
  39    int32_t frame_index[2];
  40    int16_t element_index[2];
  41    int data_type;
  42
  43    /* transfer type */
  44    int transparent_copy;
  45    int constant_fill;
  46    uint32_t color;
  47    int prefetch;
  48
  49    /* auto init and linked channel data */
  50    int end_prog;
  51    int repeat;
  52    int auto_init;
  53    int link_enabled;
  54    int link_next_ch;
  55
  56    /* interruption data */
  57    int interrupts;
  58    int status;
  59    int cstatus;
  60
  61    /* state data */
  62    int active;
  63    int enable;
  64    int sync;
  65    int src_sync;
  66    int pending_request;
  67    int waiting_end_prog;
  68    uint16_t cpc;
  69    int set_update;
  70
  71    /* sync type */
  72    int fs;
  73    int bs;
  74
  75    /* compatibility */
  76    int omap_3_1_compatible_disable;
  77
  78    qemu_irq irq;
  79    struct omap_dma_channel_s *sibling;
  80
  81    struct omap_dma_reg_set_s {
  82        hwaddr src, dest;
  83        int frame;
  84        int element;
  85        int pck_element;
  86        int frame_delta[2];
  87        int elem_delta[2];
  88        int frames;
  89        int elements;
  90        int pck_elements;
  91    } active_set;
  92
  93    struct soc_dma_ch_s *dma;
  94
  95    /* unused parameters */
  96    int write_mode;
  97    int priority;
  98    int interleave_disabled;
  99    int type;
 100    int suspend;
 101    int buf_disable;
 102};
 103
 104struct omap_dma_s {
 105    struct soc_dma_s *dma;
 106    MemoryRegion iomem;
 107
 108    struct omap_mpu_state_s *mpu;
 109    omap_clk clk;
 110    qemu_irq irq[4];
 111    void (*intr_update)(struct omap_dma_s *s);
 112    enum omap_dma_model model;
 113    int omap_3_1_mapping_disabled;
 114
 115    uint32_t gcr;
 116    uint32_t ocp;
 117    uint32_t caps[5];
 118    uint32_t irqen[4];
 119    uint32_t irqstat[4];
 120
 121    int chans;
 122    struct omap_dma_channel_s ch[32];
 123    struct omap_dma_lcd_channel_s lcd_ch;
 124};
 125
 126/* Interrupts */
 127#define TIMEOUT_INTR    (1 << 0)
 128#define EVENT_DROP_INTR (1 << 1)
 129#define HALF_FRAME_INTR (1 << 2)
 130#define END_FRAME_INTR  (1 << 3)
 131#define LAST_FRAME_INTR (1 << 4)
 132#define END_BLOCK_INTR  (1 << 5)
 133#define SYNC            (1 << 6)
 134#define END_PKT_INTR    (1 << 7)
 135#define TRANS_ERR_INTR  (1 << 8)
 136#define MISALIGN_INTR   (1 << 11)
 137
 138static inline void omap_dma_interrupts_update(struct omap_dma_s *s)
 139{
 140    s->intr_update(s);
 141}
 142
 143static void omap_dma_channel_load(struct omap_dma_channel_s *ch)
 144{
 145    struct omap_dma_reg_set_s *a = &ch->active_set;
 146    int i, normal;
 147    int omap_3_1 = !ch->omap_3_1_compatible_disable;
 148
 149    /*
 150     * TODO: verify address ranges and alignment
 151     * TODO: port endianness
 152     */
 153
 154    a->src = ch->addr[0];
 155    a->dest = ch->addr[1];
 156    a->frames = ch->frames;
 157    a->elements = ch->elements;
 158    a->pck_elements = ch->frame_index[!ch->src_sync];
 159    a->frame = 0;
 160    a->element = 0;
 161    a->pck_element = 0;
 162
 163    if (unlikely(!ch->elements || !ch->frames)) {
 164        printf("%s: bad DMA request\n", __func__);
 165        return;
 166    }
 167
 168    for (i = 0; i < 2; i ++)
 169        switch (ch->mode[i]) {
 170        case constant:
 171            a->elem_delta[i] = 0;
 172            a->frame_delta[i] = 0;
 173            break;
 174        case post_incremented:
 175            a->elem_delta[i] = ch->data_type;
 176            a->frame_delta[i] = 0;
 177            break;
 178        case single_index:
 179            a->elem_delta[i] = ch->data_type +
 180                    ch->element_index[omap_3_1 ? 0 : i] - 1;
 181            a->frame_delta[i] = 0;
 182            break;
 183        case double_index:
 184            a->elem_delta[i] = ch->data_type +
 185                    ch->element_index[omap_3_1 ? 0 : i] - 1;
 186            a->frame_delta[i] = ch->frame_index[omap_3_1 ? 0 : i] -
 187                    ch->element_index[omap_3_1 ? 0 : i];
 188            break;
 189        default:
 190            break;
 191        }
 192
 193    normal = !ch->transparent_copy && !ch->constant_fill &&
 194            /* FIFO is big-endian so either (ch->endian[n] == 1) OR
 195             * (ch->endian_lock[n] == 1) mean no endianism conversion.  */
 196            (ch->endian[0] | ch->endian_lock[0]) ==
 197            (ch->endian[1] | ch->endian_lock[1]);
 198    for (i = 0; i < 2; i ++) {
 199        /* TODO: for a->frame_delta[i] > 0 still use the fast path, just
 200         * limit min_elems in omap_dma_transfer_setup to the nearest frame
 201         * end.  */
 202        if (!a->elem_delta[i] && normal &&
 203                        (a->frames == 1 || !a->frame_delta[i]))
 204            ch->dma->type[i] = soc_dma_access_const;
 205        else if (a->elem_delta[i] == ch->data_type && normal &&
 206                        (a->frames == 1 || !a->frame_delta[i]))
 207            ch->dma->type[i] = soc_dma_access_linear;
 208        else
 209            ch->dma->type[i] = soc_dma_access_other;
 210
 211        ch->dma->vaddr[i] = ch->addr[i];
 212    }
 213    soc_dma_ch_update(ch->dma);
 214}
 215
 216static void omap_dma_activate_channel(struct omap_dma_s *s,
 217                struct omap_dma_channel_s *ch)
 218{
 219    if (!ch->active) {
 220        if (ch->set_update) {
 221            /* It's not clear when the active set is supposed to be
 222             * loaded from registers.  We're already loading it when the
 223             * channel is enabled, and for some guests this is not enough
 224             * but that may be also because of a race condition (no
 225             * delays in qemu) in the guest code, which we're just
 226             * working around here.  */
 227            omap_dma_channel_load(ch);
 228            ch->set_update = 0;
 229        }
 230
 231        ch->active = 1;
 232        soc_dma_set_request(ch->dma, 1);
 233        if (ch->sync)
 234            ch->status |= SYNC;
 235    }
 236}
 237
 238static void omap_dma_deactivate_channel(struct omap_dma_s *s,
 239                struct omap_dma_channel_s *ch)
 240{
 241    /* Update cpc */
 242    ch->cpc = ch->active_set.dest & 0xffff;
 243
 244    if (ch->pending_request && !ch->waiting_end_prog && ch->enable) {
 245        /* Don't deactivate the channel */
 246        ch->pending_request = 0;
 247        return;
 248    }
 249
 250    /* Don't deactive the channel if it is synchronized and the DMA request is
 251       active */
 252    if (ch->sync && ch->enable && (s->dma->drqbmp & (1ULL << ch->sync)))
 253        return;
 254
 255    if (ch->active) {
 256        ch->active = 0;
 257        ch->status &= ~SYNC;
 258        soc_dma_set_request(ch->dma, 0);
 259    }
 260}
 261
 262static void omap_dma_enable_channel(struct omap_dma_s *s,
 263                struct omap_dma_channel_s *ch)
 264{
 265    if (!ch->enable) {
 266        ch->enable = 1;
 267        ch->waiting_end_prog = 0;
 268        omap_dma_channel_load(ch);
 269        /* TODO: theoretically if ch->sync && ch->prefetch &&
 270         * !s->dma->drqbmp[ch->sync], we should also activate and fetch
 271         * from source and then stall until signalled.  */
 272        if ((!ch->sync) || (s->dma->drqbmp & (1ULL << ch->sync))) {
 273            omap_dma_activate_channel(s, ch);
 274        }
 275    }
 276}
 277
 278static void omap_dma_disable_channel(struct omap_dma_s *s,
 279                struct omap_dma_channel_s *ch)
 280{
 281    if (ch->enable) {
 282        ch->enable = 0;
 283        /* Discard any pending request */
 284        ch->pending_request = 0;
 285        omap_dma_deactivate_channel(s, ch);
 286    }
 287}
 288
 289static void omap_dma_channel_end_prog(struct omap_dma_s *s,
 290                struct omap_dma_channel_s *ch)
 291{
 292    if (ch->waiting_end_prog) {
 293        ch->waiting_end_prog = 0;
 294        if (!ch->sync || ch->pending_request) {
 295            ch->pending_request = 0;
 296            omap_dma_activate_channel(s, ch);
 297        }
 298    }
 299}
 300
 301static void omap_dma_interrupts_3_1_update(struct omap_dma_s *s)
 302{
 303    struct omap_dma_channel_s *ch = s->ch;
 304
 305    /* First three interrupts are shared between two channels each. */
 306    if (ch[0].status | ch[6].status)
 307        qemu_irq_raise(ch[0].irq);
 308    if (ch[1].status | ch[7].status)
 309        qemu_irq_raise(ch[1].irq);
 310    if (ch[2].status | ch[8].status)
 311        qemu_irq_raise(ch[2].irq);
 312    if (ch[3].status)
 313        qemu_irq_raise(ch[3].irq);
 314    if (ch[4].status)
 315        qemu_irq_raise(ch[4].irq);
 316    if (ch[5].status)
 317        qemu_irq_raise(ch[5].irq);
 318}
 319
 320static void omap_dma_interrupts_3_2_update(struct omap_dma_s *s)
 321{
 322    struct omap_dma_channel_s *ch = s->ch;
 323    int i;
 324
 325    for (i = s->chans; i; ch ++, i --)
 326        if (ch->status)
 327            qemu_irq_raise(ch->irq);
 328}
 329
 330static void omap_dma_enable_3_1_mapping(struct omap_dma_s *s)
 331{
 332    s->omap_3_1_mapping_disabled = 0;
 333    s->chans = 9;
 334    s->intr_update = omap_dma_interrupts_3_1_update;
 335}
 336
 337static void omap_dma_disable_3_1_mapping(struct omap_dma_s *s)
 338{
 339    s->omap_3_1_mapping_disabled = 1;
 340    s->chans = 16;
 341    s->intr_update = omap_dma_interrupts_3_2_update;
 342}
 343
 344static void omap_dma_process_request(struct omap_dma_s *s, int request)
 345{
 346    int channel;
 347    int drop_event = 0;
 348    struct omap_dma_channel_s *ch = s->ch;
 349
 350    for (channel = 0; channel < s->chans; channel ++, ch ++) {
 351        if (ch->enable && ch->sync == request) {
 352            if (!ch->active)
 353                omap_dma_activate_channel(s, ch);
 354            else if (!ch->pending_request)
 355                ch->pending_request = 1;
 356            else {
 357                /* Request collision */
 358                /* Second request received while processing other request */
 359                ch->status |= EVENT_DROP_INTR;
 360                drop_event = 1;
 361            }
 362        }
 363    }
 364
 365    if (drop_event)
 366        omap_dma_interrupts_update(s);
 367}
 368
 369static void omap_dma_transfer_generic(struct soc_dma_ch_s *dma)
 370{
 371    uint8_t value[4];
 372    struct omap_dma_channel_s *ch = dma->opaque;
 373    struct omap_dma_reg_set_s *a = &ch->active_set;
 374    int bytes = dma->bytes;
 375#ifdef MULTI_REQ
 376    uint16_t status = ch->status;
 377#endif
 378
 379    do {
 380        /* Transfer a single element */
 381        /* FIXME: check the endianness */
 382        if (!ch->constant_fill)
 383            cpu_physical_memory_read(a->src, value, ch->data_type);
 384        else
 385            *(uint32_t *) value = ch->color;
 386
 387        if (!ch->transparent_copy || *(uint32_t *) value != ch->color)
 388            cpu_physical_memory_write(a->dest, value, ch->data_type);
 389
 390        a->src += a->elem_delta[0];
 391        a->dest += a->elem_delta[1];
 392        a->element ++;
 393
 394#ifndef MULTI_REQ
 395        if (a->element == a->elements) {
 396            /* End of Frame */
 397            a->element = 0;
 398            a->src += a->frame_delta[0];
 399            a->dest += a->frame_delta[1];
 400            a->frame ++;
 401
 402            /* If the channel is async, update cpc */
 403            if (!ch->sync)
 404                ch->cpc = a->dest & 0xffff;
 405        }
 406    } while ((bytes -= ch->data_type));
 407#else
 408        /* If the channel is element synchronized, deactivate it */
 409        if (ch->sync && !ch->fs && !ch->bs)
 410            omap_dma_deactivate_channel(s, ch);
 411
 412        /* If it is the last frame, set the LAST_FRAME interrupt */
 413        if (a->element == 1 && a->frame == a->frames - 1)
 414            if (ch->interrupts & LAST_FRAME_INTR)
 415                ch->status |= LAST_FRAME_INTR;
 416
 417        /* If the half of the frame was reached, set the HALF_FRAME
 418           interrupt */
 419        if (a->element == (a->elements >> 1))
 420            if (ch->interrupts & HALF_FRAME_INTR)
 421                ch->status |= HALF_FRAME_INTR;
 422
 423        if (ch->fs && ch->bs) {
 424            a->pck_element ++;
 425            /* Check if a full packet has beed transferred.  */
 426            if (a->pck_element == a->pck_elements) {
 427                a->pck_element = 0;
 428
 429                /* Set the END_PKT interrupt */
 430                if ((ch->interrupts & END_PKT_INTR) && !ch->src_sync)
 431                    ch->status |= END_PKT_INTR;
 432
 433                /* If the channel is packet-synchronized, deactivate it */
 434                if (ch->sync)
 435                    omap_dma_deactivate_channel(s, ch);
 436            }
 437        }
 438
 439        if (a->element == a->elements) {
 440            /* End of Frame */
 441            a->element = 0;
 442            a->src += a->frame_delta[0];
 443            a->dest += a->frame_delta[1];
 444            a->frame ++;
 445
 446            /* If the channel is frame synchronized, deactivate it */
 447            if (ch->sync && ch->fs && !ch->bs)
 448                omap_dma_deactivate_channel(s, ch);
 449
 450            /* If the channel is async, update cpc */
 451            if (!ch->sync)
 452                ch->cpc = a->dest & 0xffff;
 453
 454            /* Set the END_FRAME interrupt */
 455            if (ch->interrupts & END_FRAME_INTR)
 456                ch->status |= END_FRAME_INTR;
 457
 458            if (a->frame == a->frames) {
 459                /* End of Block */
 460                /* Disable the channel */
 461
 462                if (ch->omap_3_1_compatible_disable) {
 463                    omap_dma_disable_channel(s, ch);
 464                    if (ch->link_enabled)
 465                        omap_dma_enable_channel(s,
 466                                        &s->ch[ch->link_next_ch]);
 467                } else {
 468                    if (!ch->auto_init)
 469                        omap_dma_disable_channel(s, ch);
 470                    else if (ch->repeat || ch->end_prog)
 471                        omap_dma_channel_load(ch);
 472                    else {
 473                        ch->waiting_end_prog = 1;
 474                        omap_dma_deactivate_channel(s, ch);
 475                    }
 476                }
 477
 478                if (ch->interrupts & END_BLOCK_INTR)
 479                    ch->status |= END_BLOCK_INTR;
 480            }
 481        }
 482    } while (status == ch->status && ch->active);
 483
 484    omap_dma_interrupts_update(s);
 485#endif
 486}
 487
 488enum {
 489    omap_dma_intr_element_sync,
 490    omap_dma_intr_last_frame,
 491    omap_dma_intr_half_frame,
 492    omap_dma_intr_frame,
 493    omap_dma_intr_frame_sync,
 494    omap_dma_intr_packet,
 495    omap_dma_intr_packet_sync,
 496    omap_dma_intr_block,
 497    __omap_dma_intr_last,
 498};
 499
 500static void omap_dma_transfer_setup(struct soc_dma_ch_s *dma)
 501{
 502    struct omap_dma_port_if_s *src_p, *dest_p;
 503    struct omap_dma_reg_set_s *a;
 504    struct omap_dma_channel_s *ch = dma->opaque;
 505    struct omap_dma_s *s = dma->dma->opaque;
 506    int frames, min_elems, elements[__omap_dma_intr_last];
 507
 508    a = &ch->active_set;
 509
 510    src_p = &s->mpu->port[ch->port[0]];
 511    dest_p = &s->mpu->port[ch->port[1]];
 512    if ((!ch->constant_fill && !src_p->addr_valid(s->mpu, a->src)) ||
 513                    (!dest_p->addr_valid(s->mpu, a->dest))) {
 514#if 0
 515        /* Bus time-out */
 516        if (ch->interrupts & TIMEOUT_INTR)
 517            ch->status |= TIMEOUT_INTR;
 518        omap_dma_deactivate_channel(s, ch);
 519        continue;
 520#endif
 521        printf("%s: Bus time-out in DMA%i operation\n",
 522                        __func__, dma->num);
 523    }
 524
 525    min_elems = INT_MAX;
 526
 527    /* Check all the conditions that terminate the transfer starting
 528     * with those that can occur the soonest.  */
 529#define INTR_CHECK(cond, id, nelements) \
 530    if (cond) {                 \
 531        elements[id] = nelements;       \
 532        if (elements[id] < min_elems)   \
 533            min_elems = elements[id];   \
 534    } else                              \
 535        elements[id] = INT_MAX;
 536
 537    /* Elements */
 538    INTR_CHECK(
 539                    ch->sync && !ch->fs && !ch->bs,
 540                    omap_dma_intr_element_sync,
 541                    1)
 542
 543    /* Frames */
 544    /* TODO: for transfers where entire frames can be read and written
 545     * using memcpy() but a->frame_delta is non-zero, try to still do
 546     * transfers using soc_dma but limit min_elems to a->elements - ...
 547     * See also the TODO in omap_dma_channel_load.  */
 548    INTR_CHECK(
 549                    (ch->interrupts & LAST_FRAME_INTR) &&
 550                    ((a->frame < a->frames - 1) || !a->element),
 551                    omap_dma_intr_last_frame,
 552                    (a->frames - a->frame - 2) * a->elements +
 553                    (a->elements - a->element + 1))
 554    INTR_CHECK(
 555                    ch->interrupts & HALF_FRAME_INTR,
 556                    omap_dma_intr_half_frame,
 557                    (a->elements >> 1) +
 558                    (a->element >= (a->elements >> 1) ? a->elements : 0) -
 559                    a->element)
 560    INTR_CHECK(
 561                    ch->sync && ch->fs && (ch->interrupts & END_FRAME_INTR),
 562                    omap_dma_intr_frame,
 563                    a->elements - a->element)
 564    INTR_CHECK(
 565                    ch->sync && ch->fs && !ch->bs,
 566                    omap_dma_intr_frame_sync,
 567                    a->elements - a->element)
 568
 569    /* Packets */
 570    INTR_CHECK(
 571                    ch->fs && ch->bs &&
 572                    (ch->interrupts & END_PKT_INTR) && !ch->src_sync,
 573                    omap_dma_intr_packet,
 574                    a->pck_elements - a->pck_element)
 575    INTR_CHECK(
 576                    ch->fs && ch->bs && ch->sync,
 577                    omap_dma_intr_packet_sync,
 578                    a->pck_elements - a->pck_element)
 579
 580    /* Blocks */
 581    INTR_CHECK(
 582                    1,
 583                    omap_dma_intr_block,
 584                    (a->frames - a->frame - 1) * a->elements +
 585                    (a->elements - a->element))
 586
 587    dma->bytes = min_elems * ch->data_type;
 588
 589    /* Set appropriate interrupts and/or deactivate channels */
 590
 591#ifdef MULTI_REQ
 592    /* TODO: should all of this only be done if dma->update, and otherwise
 593     * inside omap_dma_transfer_generic below - check what's faster.  */
 594    if (dma->update) {
 595#endif
 596
 597        /* If the channel is element synchronized, deactivate it */
 598        if (min_elems == elements[omap_dma_intr_element_sync])
 599            omap_dma_deactivate_channel(s, ch);
 600
 601        /* If it is the last frame, set the LAST_FRAME interrupt */
 602        if (min_elems == elements[omap_dma_intr_last_frame])
 603            ch->status |= LAST_FRAME_INTR;
 604
 605        /* If exactly half of the frame was reached, set the HALF_FRAME
 606           interrupt */
 607        if (min_elems == elements[omap_dma_intr_half_frame])
 608            ch->status |= HALF_FRAME_INTR;
 609
 610        /* If a full packet has been transferred, set the END_PKT interrupt */
 611        if (min_elems == elements[omap_dma_intr_packet])
 612            ch->status |= END_PKT_INTR;
 613
 614        /* If the channel is packet-synchronized, deactivate it */
 615        if (min_elems == elements[omap_dma_intr_packet_sync])
 616            omap_dma_deactivate_channel(s, ch);
 617
 618        /* If the channel is frame synchronized, deactivate it */
 619        if (min_elems == elements[omap_dma_intr_frame_sync])
 620            omap_dma_deactivate_channel(s, ch);
 621
 622        /* Set the END_FRAME interrupt */
 623        if (min_elems == elements[omap_dma_intr_frame])
 624            ch->status |= END_FRAME_INTR;
 625
 626        if (min_elems == elements[omap_dma_intr_block]) {
 627            /* End of Block */
 628            /* Disable the channel */
 629
 630            if (ch->omap_3_1_compatible_disable) {
 631                omap_dma_disable_channel(s, ch);
 632                if (ch->link_enabled)
 633                    omap_dma_enable_channel(s, &s->ch[ch->link_next_ch]);
 634            } else {
 635                if (!ch->auto_init)
 636                    omap_dma_disable_channel(s, ch);
 637                else if (ch->repeat || ch->end_prog)
 638                    omap_dma_channel_load(ch);
 639                else {
 640                    ch->waiting_end_prog = 1;
 641                    omap_dma_deactivate_channel(s, ch);
 642                }
 643            }
 644
 645            if (ch->interrupts & END_BLOCK_INTR)
 646                ch->status |= END_BLOCK_INTR;
 647        }
 648
 649        /* Update packet number */
 650        if (ch->fs && ch->bs) {
 651            a->pck_element += min_elems;
 652            a->pck_element %= a->pck_elements;
 653        }
 654
 655        /* TODO: check if we really need to update anything here or perhaps we
 656         * can skip part of this.  */
 657#ifndef MULTI_REQ
 658        if (dma->update) {
 659#endif
 660            a->element += min_elems;
 661
 662            frames = a->element / a->elements;
 663            a->element = a->element % a->elements;
 664            a->frame += frames;
 665            a->src += min_elems * a->elem_delta[0] + frames * a->frame_delta[0];
 666            a->dest += min_elems * a->elem_delta[1] + frames * a->frame_delta[1];
 667
 668            /* If the channel is async, update cpc */
 669            if (!ch->sync && frames)
 670                ch->cpc = a->dest & 0xffff;
 671
 672            /* TODO: if the destination port is IMIF or EMIFF, set the dirty
 673             * bits on it.  */
 674#ifndef MULTI_REQ
 675        }
 676#else
 677    }
 678#endif
 679
 680    omap_dma_interrupts_update(s);
 681}
 682
 683void omap_dma_reset(struct soc_dma_s *dma)
 684{
 685    int i;
 686    struct omap_dma_s *s = dma->opaque;
 687
 688    soc_dma_reset(s->dma);
 689    if (s->model < omap_dma_4)
 690        s->gcr = 0x0004;
 691    else
 692        s->gcr = 0x00010010;
 693    s->ocp = 0x00000000;
 694    memset(&s->irqstat, 0, sizeof(s->irqstat));
 695    memset(&s->irqen, 0, sizeof(s->irqen));
 696    s->lcd_ch.src = emiff;
 697    s->lcd_ch.condition = 0;
 698    s->lcd_ch.interrupts = 0;
 699    s->lcd_ch.dual = 0;
 700    if (s->model < omap_dma_4)
 701        omap_dma_enable_3_1_mapping(s);
 702    for (i = 0; i < s->chans; i ++) {
 703        s->ch[i].suspend = 0;
 704        s->ch[i].prefetch = 0;
 705        s->ch[i].buf_disable = 0;
 706        s->ch[i].src_sync = 0;
 707        memset(&s->ch[i].burst, 0, sizeof(s->ch[i].burst));
 708        memset(&s->ch[i].port, 0, sizeof(s->ch[i].port));
 709        memset(&s->ch[i].mode, 0, sizeof(s->ch[i].mode));
 710        memset(&s->ch[i].frame_index, 0, sizeof(s->ch[i].frame_index));
 711        memset(&s->ch[i].element_index, 0, sizeof(s->ch[i].element_index));
 712        memset(&s->ch[i].endian, 0, sizeof(s->ch[i].endian));
 713        memset(&s->ch[i].endian_lock, 0, sizeof(s->ch[i].endian_lock));
 714        memset(&s->ch[i].translate, 0, sizeof(s->ch[i].translate));
 715        s->ch[i].write_mode = 0;
 716        s->ch[i].data_type = 0;
 717        s->ch[i].transparent_copy = 0;
 718        s->ch[i].constant_fill = 0;
 719        s->ch[i].color = 0x00000000;
 720        s->ch[i].end_prog = 0;
 721        s->ch[i].repeat = 0;
 722        s->ch[i].auto_init = 0;
 723        s->ch[i].link_enabled = 0;
 724        if (s->model < omap_dma_4)
 725            s->ch[i].interrupts = 0x0003;
 726        else
 727            s->ch[i].interrupts = 0x0000;
 728        s->ch[i].status = 0;
 729        s->ch[i].cstatus = 0;
 730        s->ch[i].active = 0;
 731        s->ch[i].enable = 0;
 732        s->ch[i].sync = 0;
 733        s->ch[i].pending_request = 0;
 734        s->ch[i].waiting_end_prog = 0;
 735        s->ch[i].cpc = 0x0000;
 736        s->ch[i].fs = 0;
 737        s->ch[i].bs = 0;
 738        s->ch[i].omap_3_1_compatible_disable = 0;
 739        memset(&s->ch[i].active_set, 0, sizeof(s->ch[i].active_set));
 740        s->ch[i].priority = 0;
 741        s->ch[i].interleave_disabled = 0;
 742        s->ch[i].type = 0;
 743    }
 744}
 745
 746static int omap_dma_ch_reg_read(struct omap_dma_s *s,
 747                struct omap_dma_channel_s *ch, int reg, uint16_t *value)
 748{
 749    switch (reg) {
 750    case 0x00:  /* SYS_DMA_CSDP_CH0 */
 751        *value = (ch->burst[1] << 14) |
 752                (ch->pack[1] << 13) |
 753                (ch->port[1] << 9) |
 754                (ch->burst[0] << 7) |
 755                (ch->pack[0] << 6) |
 756                (ch->port[0] << 2) |
 757                (ch->data_type >> 1);
 758        break;
 759
 760    case 0x02:  /* SYS_DMA_CCR_CH0 */
 761        if (s->model <= omap_dma_3_1)
 762            *value = 0 << 10;                   /* FIFO_FLUSH reads as 0 */
 763        else
 764            *value = ch->omap_3_1_compatible_disable << 10;
 765        *value |= (ch->mode[1] << 14) |
 766                (ch->mode[0] << 12) |
 767                (ch->end_prog << 11) |
 768                (ch->repeat << 9) |
 769                (ch->auto_init << 8) |
 770                (ch->enable << 7) |
 771                (ch->priority << 6) |
 772                (ch->fs << 5) | ch->sync;
 773        break;
 774
 775    case 0x04:  /* SYS_DMA_CICR_CH0 */
 776        *value = ch->interrupts;
 777        break;
 778
 779    case 0x06:  /* SYS_DMA_CSR_CH0 */
 780        *value = ch->status;
 781        ch->status &= SYNC;
 782        if (!ch->omap_3_1_compatible_disable && ch->sibling) {
 783            *value |= (ch->sibling->status & 0x3f) << 6;
 784            ch->sibling->status &= SYNC;
 785        }
 786        qemu_irq_lower(ch->irq);
 787        break;
 788
 789    case 0x08:  /* SYS_DMA_CSSA_L_CH0 */
 790        *value = ch->addr[0] & 0x0000ffff;
 791        break;
 792
 793    case 0x0a:  /* SYS_DMA_CSSA_U_CH0 */
 794        *value = ch->addr[0] >> 16;
 795        break;
 796
 797    case 0x0c:  /* SYS_DMA_CDSA_L_CH0 */
 798        *value = ch->addr[1] & 0x0000ffff;
 799        break;
 800
 801    case 0x0e:  /* SYS_DMA_CDSA_U_CH0 */
 802        *value = ch->addr[1] >> 16;
 803        break;
 804
 805    case 0x10:  /* SYS_DMA_CEN_CH0 */
 806        *value = ch->elements;
 807        break;
 808
 809    case 0x12:  /* SYS_DMA_CFN_CH0 */
 810        *value = ch->frames;
 811        break;
 812
 813    case 0x14:  /* SYS_DMA_CFI_CH0 */
 814        *value = ch->frame_index[0];
 815        break;
 816
 817    case 0x16:  /* SYS_DMA_CEI_CH0 */
 818        *value = ch->element_index[0];
 819        break;
 820
 821    case 0x18:  /* SYS_DMA_CPC_CH0 or DMA_CSAC */
 822        if (ch->omap_3_1_compatible_disable)
 823            *value = ch->active_set.src & 0xffff;       /* CSAC */
 824        else
 825            *value = ch->cpc;
 826        break;
 827
 828    case 0x1a:  /* DMA_CDAC */
 829        *value = ch->active_set.dest & 0xffff;  /* CDAC */
 830        break;
 831
 832    case 0x1c:  /* DMA_CDEI */
 833        *value = ch->element_index[1];
 834        break;
 835
 836    case 0x1e:  /* DMA_CDFI */
 837        *value = ch->frame_index[1];
 838        break;
 839
 840    case 0x20:  /* DMA_COLOR_L */
 841        *value = ch->color & 0xffff;
 842        break;
 843
 844    case 0x22:  /* DMA_COLOR_U */
 845        *value = ch->color >> 16;
 846        break;
 847
 848    case 0x24:  /* DMA_CCR2 */
 849        *value = (ch->bs << 2) |
 850                (ch->transparent_copy << 1) |
 851                ch->constant_fill;
 852        break;
 853
 854    case 0x28:  /* DMA_CLNK_CTRL */
 855        *value = (ch->link_enabled << 15) |
 856                (ch->link_next_ch & 0xf);
 857        break;
 858
 859    case 0x2a:  /* DMA_LCH_CTRL */
 860        *value = (ch->interleave_disabled << 15) |
 861                ch->type;
 862        break;
 863
 864    default:
 865        return 1;
 866    }
 867    return 0;
 868}
 869
 870static int omap_dma_ch_reg_write(struct omap_dma_s *s,
 871                struct omap_dma_channel_s *ch, int reg, uint16_t value)
 872{
 873    switch (reg) {
 874    case 0x00:  /* SYS_DMA_CSDP_CH0 */
 875        ch->burst[1] = (value & 0xc000) >> 14;
 876        ch->pack[1] = (value & 0x2000) >> 13;
 877        ch->port[1] = (enum omap_dma_port) ((value & 0x1e00) >> 9);
 878        ch->burst[0] = (value & 0x0180) >> 7;
 879        ch->pack[0] = (value & 0x0040) >> 6;
 880        ch->port[0] = (enum omap_dma_port) ((value & 0x003c) >> 2);
 881        if (ch->port[0] >= __omap_dma_port_last)
 882            printf("%s: invalid DMA port %i\n", __func__,
 883                            ch->port[0]);
 884        if (ch->port[1] >= __omap_dma_port_last)
 885            printf("%s: invalid DMA port %i\n", __func__,
 886                            ch->port[1]);
 887        ch->data_type = 1 << (value & 3);
 888        if ((value & 3) == 3) {
 889            printf("%s: bad data_type for DMA channel\n", __func__);
 890            ch->data_type >>= 1;
 891        }
 892        break;
 893
 894    case 0x02:  /* SYS_DMA_CCR_CH0 */
 895        ch->mode[1] = (omap_dma_addressing_t) ((value & 0xc000) >> 14);
 896        ch->mode[0] = (omap_dma_addressing_t) ((value & 0x3000) >> 12);
 897        ch->end_prog = (value & 0x0800) >> 11;
 898        if (s->model >= omap_dma_3_2)
 899            ch->omap_3_1_compatible_disable  = (value >> 10) & 0x1;
 900        ch->repeat = (value & 0x0200) >> 9;
 901        ch->auto_init = (value & 0x0100) >> 8;
 902        ch->priority = (value & 0x0040) >> 6;
 903        ch->fs = (value & 0x0020) >> 5;
 904        ch->sync = value & 0x001f;
 905
 906        if (value & 0x0080)
 907            omap_dma_enable_channel(s, ch);
 908        else
 909            omap_dma_disable_channel(s, ch);
 910
 911        if (ch->end_prog)
 912            omap_dma_channel_end_prog(s, ch);
 913
 914        break;
 915
 916    case 0x04:  /* SYS_DMA_CICR_CH0 */
 917        ch->interrupts = value & 0x3f;
 918        break;
 919
 920    case 0x06:  /* SYS_DMA_CSR_CH0 */
 921        OMAP_RO_REG((hwaddr) reg);
 922        break;
 923
 924    case 0x08:  /* SYS_DMA_CSSA_L_CH0 */
 925        ch->addr[0] &= 0xffff0000;
 926        ch->addr[0] |= value;
 927        break;
 928
 929    case 0x0a:  /* SYS_DMA_CSSA_U_CH0 */
 930        ch->addr[0] &= 0x0000ffff;
 931        ch->addr[0] |= (uint32_t) value << 16;
 932        break;
 933
 934    case 0x0c:  /* SYS_DMA_CDSA_L_CH0 */
 935        ch->addr[1] &= 0xffff0000;
 936        ch->addr[1] |= value;
 937        break;
 938
 939    case 0x0e:  /* SYS_DMA_CDSA_U_CH0 */
 940        ch->addr[1] &= 0x0000ffff;
 941        ch->addr[1] |= (uint32_t) value << 16;
 942        break;
 943
 944    case 0x10:  /* SYS_DMA_CEN_CH0 */
 945        ch->elements = value;
 946        break;
 947
 948    case 0x12:  /* SYS_DMA_CFN_CH0 */
 949        ch->frames = value;
 950        break;
 951
 952    case 0x14:  /* SYS_DMA_CFI_CH0 */
 953        ch->frame_index[0] = (int16_t) value;
 954        break;
 955
 956    case 0x16:  /* SYS_DMA_CEI_CH0 */
 957        ch->element_index[0] = (int16_t) value;
 958        break;
 959
 960    case 0x18:  /* SYS_DMA_CPC_CH0 or DMA_CSAC */
 961        OMAP_RO_REG((hwaddr) reg);
 962        break;
 963
 964    case 0x1c:  /* DMA_CDEI */
 965        ch->element_index[1] = (int16_t) value;
 966        break;
 967
 968    case 0x1e:  /* DMA_CDFI */
 969        ch->frame_index[1] = (int16_t) value;
 970        break;
 971
 972    case 0x20:  /* DMA_COLOR_L */
 973        ch->color &= 0xffff0000;
 974        ch->color |= value;
 975        break;
 976
 977    case 0x22:  /* DMA_COLOR_U */
 978        ch->color &= 0xffff;
 979        ch->color |= (uint32_t)value << 16;
 980        break;
 981
 982    case 0x24:  /* DMA_CCR2 */
 983        ch->bs = (value >> 2) & 0x1;
 984        ch->transparent_copy = (value >> 1) & 0x1;
 985        ch->constant_fill = value & 0x1;
 986        break;
 987
 988    case 0x28:  /* DMA_CLNK_CTRL */
 989        ch->link_enabled = (value >> 15) & 0x1;
 990        if (value & (1 << 14)) {                        /* Stop_Lnk */
 991            ch->link_enabled = 0;
 992            omap_dma_disable_channel(s, ch);
 993        }
 994        ch->link_next_ch = value & 0x1f;
 995        break;
 996
 997    case 0x2a:  /* DMA_LCH_CTRL */
 998        ch->interleave_disabled = (value >> 15) & 0x1;
 999        ch->type = value & 0xf;
1000        break;
1001
1002    default:
1003        return 1;
1004    }
1005    return 0;
1006}
1007
1008static int omap_dma_3_2_lcd_write(struct omap_dma_lcd_channel_s *s, int offset,
1009                uint16_t value)
1010{
1011    switch (offset) {
1012    case 0xbc0: /* DMA_LCD_CSDP */
1013        s->brust_f2 = (value >> 14) & 0x3;
1014        s->pack_f2 = (value >> 13) & 0x1;
1015        s->data_type_f2 = (1 << ((value >> 11) & 0x3));
1016        s->brust_f1 = (value >> 7) & 0x3;
1017        s->pack_f1 = (value >> 6) & 0x1;
1018        s->data_type_f1 = (1 << ((value >> 0) & 0x3));
1019        break;
1020
1021    case 0xbc2: /* DMA_LCD_CCR */
1022        s->mode_f2 = (value >> 14) & 0x3;
1023        s->mode_f1 = (value >> 12) & 0x3;
1024        s->end_prog = (value >> 11) & 0x1;
1025        s->omap_3_1_compatible_disable = (value >> 10) & 0x1;
1026        s->repeat = (value >> 9) & 0x1;
1027        s->auto_init = (value >> 8) & 0x1;
1028        s->running = (value >> 7) & 0x1;
1029        s->priority = (value >> 6) & 0x1;
1030        s->bs = (value >> 4) & 0x1;
1031        break;
1032
1033    case 0xbc4: /* DMA_LCD_CTRL */
1034        s->dst = (value >> 8) & 0x1;
1035        s->src = ((value >> 6) & 0x3) << 1;
1036        s->condition = 0;
1037        /* Assume no bus errors and thus no BUS_ERROR irq bits.  */
1038        s->interrupts = (value >> 1) & 1;
1039        s->dual = value & 1;
1040        break;
1041
1042    case 0xbc8: /* TOP_B1_L */
1043        s->src_f1_top &= 0xffff0000;
1044        s->src_f1_top |= 0x0000ffff & value;
1045        break;
1046
1047    case 0xbca: /* TOP_B1_U */
1048        s->src_f1_top &= 0x0000ffff;
1049        s->src_f1_top |= (uint32_t)value << 16;
1050        break;
1051
1052    case 0xbcc: /* BOT_B1_L */
1053        s->src_f1_bottom &= 0xffff0000;
1054        s->src_f1_bottom |= 0x0000ffff & value;
1055        break;
1056
1057    case 0xbce: /* BOT_B1_U */
1058        s->src_f1_bottom &= 0x0000ffff;
1059        s->src_f1_bottom |= (uint32_t) value << 16;
1060        break;
1061
1062    case 0xbd0: /* TOP_B2_L */
1063        s->src_f2_top &= 0xffff0000;
1064        s->src_f2_top |= 0x0000ffff & value;
1065        break;
1066
1067    case 0xbd2: /* TOP_B2_U */
1068        s->src_f2_top &= 0x0000ffff;
1069        s->src_f2_top |= (uint32_t) value << 16;
1070        break;
1071
1072    case 0xbd4: /* BOT_B2_L */
1073        s->src_f2_bottom &= 0xffff0000;
1074        s->src_f2_bottom |= 0x0000ffff & value;
1075        break;
1076
1077    case 0xbd6: /* BOT_B2_U */
1078        s->src_f2_bottom &= 0x0000ffff;
1079        s->src_f2_bottom |= (uint32_t) value << 16;
1080        break;
1081
1082    case 0xbd8: /* DMA_LCD_SRC_EI_B1 */
1083        s->element_index_f1 = value;
1084        break;
1085
1086    case 0xbda: /* DMA_LCD_SRC_FI_B1_L */
1087        s->frame_index_f1 &= 0xffff0000;
1088        s->frame_index_f1 |= 0x0000ffff & value;
1089        break;
1090
1091    case 0xbf4: /* DMA_LCD_SRC_FI_B1_U */
1092        s->frame_index_f1 &= 0x0000ffff;
1093        s->frame_index_f1 |= (uint32_t) value << 16;
1094        break;
1095
1096    case 0xbdc: /* DMA_LCD_SRC_EI_B2 */
1097        s->element_index_f2 = value;
1098        break;
1099
1100    case 0xbde: /* DMA_LCD_SRC_FI_B2_L */
1101        s->frame_index_f2 &= 0xffff0000;
1102        s->frame_index_f2 |= 0x0000ffff & value;
1103        break;
1104
1105    case 0xbf6: /* DMA_LCD_SRC_FI_B2_U */
1106        s->frame_index_f2 &= 0x0000ffff;
1107        s->frame_index_f2 |= (uint32_t) value << 16;
1108        break;
1109
1110    case 0xbe0: /* DMA_LCD_SRC_EN_B1 */
1111        s->elements_f1 = value;
1112        break;
1113
1114    case 0xbe4: /* DMA_LCD_SRC_FN_B1 */
1115        s->frames_f1 = value;
1116        break;
1117
1118    case 0xbe2: /* DMA_LCD_SRC_EN_B2 */
1119        s->elements_f2 = value;
1120        break;
1121
1122    case 0xbe6: /* DMA_LCD_SRC_FN_B2 */
1123        s->frames_f2 = value;
1124        break;
1125
1126    case 0xbea: /* DMA_LCD_LCH_CTRL */
1127        s->lch_type = value & 0xf;
1128        break;
1129
1130    default:
1131        return 1;
1132    }
1133    return 0;
1134}
1135
1136static int omap_dma_3_2_lcd_read(struct omap_dma_lcd_channel_s *s, int offset,
1137                uint16_t *ret)
1138{
1139    switch (offset) {
1140    case 0xbc0: /* DMA_LCD_CSDP */
1141        *ret = (s->brust_f2 << 14) |
1142            (s->pack_f2 << 13) |
1143            ((s->data_type_f2 >> 1) << 11) |
1144            (s->brust_f1 << 7) |
1145            (s->pack_f1 << 6) |
1146            ((s->data_type_f1 >> 1) << 0);
1147        break;
1148
1149    case 0xbc2: /* DMA_LCD_CCR */
1150        *ret = (s->mode_f2 << 14) |
1151            (s->mode_f1 << 12) |
1152            (s->end_prog << 11) |
1153            (s->omap_3_1_compatible_disable << 10) |
1154            (s->repeat << 9) |
1155            (s->auto_init << 8) |
1156            (s->running << 7) |
1157            (s->priority << 6) |
1158            (s->bs << 4);
1159        break;
1160
1161    case 0xbc4: /* DMA_LCD_CTRL */
1162        qemu_irq_lower(s->irq);
1163        *ret = (s->dst << 8) |
1164            ((s->src & 0x6) << 5) |
1165            (s->condition << 3) |
1166            (s->interrupts << 1) |
1167            s->dual;
1168        break;
1169
1170    case 0xbc8: /* TOP_B1_L */
1171        *ret = s->src_f1_top & 0xffff;
1172        break;
1173
1174    case 0xbca: /* TOP_B1_U */
1175        *ret = s->src_f1_top >> 16;
1176        break;
1177
1178    case 0xbcc: /* BOT_B1_L */
1179        *ret = s->src_f1_bottom & 0xffff;
1180        break;
1181
1182    case 0xbce: /* BOT_B1_U */
1183        *ret = s->src_f1_bottom >> 16;
1184        break;
1185
1186    case 0xbd0: /* TOP_B2_L */
1187        *ret = s->src_f2_top & 0xffff;
1188        break;
1189
1190    case 0xbd2: /* TOP_B2_U */
1191        *ret = s->src_f2_top >> 16;
1192        break;
1193
1194    case 0xbd4: /* BOT_B2_L */
1195        *ret = s->src_f2_bottom & 0xffff;
1196        break;
1197
1198    case 0xbd6: /* BOT_B2_U */
1199        *ret = s->src_f2_bottom >> 16;
1200        break;
1201
1202    case 0xbd8: /* DMA_LCD_SRC_EI_B1 */
1203        *ret = s->element_index_f1;
1204        break;
1205
1206    case 0xbda: /* DMA_LCD_SRC_FI_B1_L */
1207        *ret = s->frame_index_f1 & 0xffff;
1208        break;
1209
1210    case 0xbf4: /* DMA_LCD_SRC_FI_B1_U */
1211        *ret = s->frame_index_f1 >> 16;
1212        break;
1213
1214    case 0xbdc: /* DMA_LCD_SRC_EI_B2 */
1215        *ret = s->element_index_f2;
1216        break;
1217
1218    case 0xbde: /* DMA_LCD_SRC_FI_B2_L */
1219        *ret = s->frame_index_f2 & 0xffff;
1220        break;
1221
1222    case 0xbf6: /* DMA_LCD_SRC_FI_B2_U */
1223        *ret = s->frame_index_f2 >> 16;
1224        break;
1225
1226    case 0xbe0: /* DMA_LCD_SRC_EN_B1 */
1227        *ret = s->elements_f1;
1228        break;
1229
1230    case 0xbe4: /* DMA_LCD_SRC_FN_B1 */
1231        *ret = s->frames_f1;
1232        break;
1233
1234    case 0xbe2: /* DMA_LCD_SRC_EN_B2 */
1235        *ret = s->elements_f2;
1236        break;
1237
1238    case 0xbe6: /* DMA_LCD_SRC_FN_B2 */
1239        *ret = s->frames_f2;
1240        break;
1241
1242    case 0xbea: /* DMA_LCD_LCH_CTRL */
1243        *ret = s->lch_type;
1244        break;
1245
1246    default:
1247        return 1;
1248    }
1249    return 0;
1250}
1251
1252static int omap_dma_3_1_lcd_write(struct omap_dma_lcd_channel_s *s, int offset,
1253                uint16_t value)
1254{
1255    switch (offset) {
1256    case 0x300: /* SYS_DMA_LCD_CTRL */
1257        s->src = (value & 0x40) ? imif : emiff;
1258        s->condition = 0;
1259        /* Assume no bus errors and thus no BUS_ERROR irq bits.  */
1260        s->interrupts = (value >> 1) & 1;
1261        s->dual = value & 1;
1262        break;
1263
1264    case 0x302: /* SYS_DMA_LCD_TOP_F1_L */
1265        s->src_f1_top &= 0xffff0000;
1266        s->src_f1_top |= 0x0000ffff & value;
1267        break;
1268
1269    case 0x304: /* SYS_DMA_LCD_TOP_F1_U */
1270        s->src_f1_top &= 0x0000ffff;
1271        s->src_f1_top |= (uint32_t)value << 16;
1272        break;
1273
1274    case 0x306: /* SYS_DMA_LCD_BOT_F1_L */
1275        s->src_f1_bottom &= 0xffff0000;
1276        s->src_f1_bottom |= 0x0000ffff & value;
1277        break;
1278
1279    case 0x308: /* SYS_DMA_LCD_BOT_F1_U */
1280        s->src_f1_bottom &= 0x0000ffff;
1281        s->src_f1_bottom |= (uint32_t)value << 16;
1282        break;
1283
1284    case 0x30a: /* SYS_DMA_LCD_TOP_F2_L */
1285        s->src_f2_top &= 0xffff0000;
1286        s->src_f2_top |= 0x0000ffff & value;
1287        break;
1288
1289    case 0x30c: /* SYS_DMA_LCD_TOP_F2_U */
1290        s->src_f2_top &= 0x0000ffff;
1291        s->src_f2_top |= (uint32_t)value << 16;
1292        break;
1293
1294    case 0x30e: /* SYS_DMA_LCD_BOT_F2_L */
1295        s->src_f2_bottom &= 0xffff0000;
1296        s->src_f2_bottom |= 0x0000ffff & value;
1297        break;
1298
1299    case 0x310: /* SYS_DMA_LCD_BOT_F2_U */
1300        s->src_f2_bottom &= 0x0000ffff;
1301        s->src_f2_bottom |= (uint32_t)value << 16;
1302        break;
1303
1304    default:
1305        return 1;
1306    }
1307    return 0;
1308}
1309
1310static int omap_dma_3_1_lcd_read(struct omap_dma_lcd_channel_s *s, int offset,
1311                uint16_t *ret)
1312{
1313    int i;
1314
1315    switch (offset) {
1316    case 0x300: /* SYS_DMA_LCD_CTRL */
1317        i = s->condition;
1318        s->condition = 0;
1319        qemu_irq_lower(s->irq);
1320        *ret = ((s->src == imif) << 6) | (i << 3) |
1321                (s->interrupts << 1) | s->dual;
1322        break;
1323
1324    case 0x302: /* SYS_DMA_LCD_TOP_F1_L */
1325        *ret = s->src_f1_top & 0xffff;
1326        break;
1327
1328    case 0x304: /* SYS_DMA_LCD_TOP_F1_U */
1329        *ret = s->src_f1_top >> 16;
1330        break;
1331
1332    case 0x306: /* SYS_DMA_LCD_BOT_F1_L */
1333        *ret = s->src_f1_bottom & 0xffff;
1334        break;
1335
1336    case 0x308: /* SYS_DMA_LCD_BOT_F1_U */
1337        *ret = s->src_f1_bottom >> 16;
1338        break;
1339
1340    case 0x30a: /* SYS_DMA_LCD_TOP_F2_L */
1341        *ret = s->src_f2_top & 0xffff;
1342        break;
1343
1344    case 0x30c: /* SYS_DMA_LCD_TOP_F2_U */
1345        *ret = s->src_f2_top >> 16;
1346        break;
1347
1348    case 0x30e: /* SYS_DMA_LCD_BOT_F2_L */
1349        *ret = s->src_f2_bottom & 0xffff;
1350        break;
1351
1352    case 0x310: /* SYS_DMA_LCD_BOT_F2_U */
1353        *ret = s->src_f2_bottom >> 16;
1354        break;
1355
1356    default:
1357        return 1;
1358    }
1359    return 0;
1360}
1361
1362static int omap_dma_sys_write(struct omap_dma_s *s, int offset, uint16_t value)
1363{
1364    switch (offset) {
1365    case 0x400: /* SYS_DMA_GCR */
1366        s->gcr = value;
1367        break;
1368
1369    case 0x404: /* DMA_GSCR */
1370        if (value & 0x8)
1371            omap_dma_disable_3_1_mapping(s);
1372        else
1373            omap_dma_enable_3_1_mapping(s);
1374        break;
1375
1376    case 0x408: /* DMA_GRST */
1377        if (value & 0x1)
1378            omap_dma_reset(s->dma);
1379        break;
1380
1381    default:
1382        return 1;
1383    }
1384    return 0;
1385}
1386
1387static int omap_dma_sys_read(struct omap_dma_s *s, int offset,
1388                uint16_t *ret)
1389{
1390    switch (offset) {
1391    case 0x400: /* SYS_DMA_GCR */
1392        *ret = s->gcr;
1393        break;
1394
1395    case 0x404: /* DMA_GSCR */
1396        *ret = s->omap_3_1_mapping_disabled << 3;
1397        break;
1398
1399    case 0x408: /* DMA_GRST */
1400        *ret = 0;
1401        break;
1402
1403    case 0x442: /* DMA_HW_ID */
1404    case 0x444: /* DMA_PCh2_ID */
1405    case 0x446: /* DMA_PCh0_ID */
1406    case 0x448: /* DMA_PCh1_ID */
1407    case 0x44a: /* DMA_PChG_ID */
1408    case 0x44c: /* DMA_PChD_ID */
1409        *ret = 1;
1410        break;
1411
1412    case 0x44e: /* DMA_CAPS_0_U */
1413        *ret = (s->caps[0] >> 16) & 0xffff;
1414        break;
1415    case 0x450: /* DMA_CAPS_0_L */
1416        *ret = (s->caps[0] >>  0) & 0xffff;
1417        break;
1418
1419    case 0x452: /* DMA_CAPS_1_U */
1420        *ret = (s->caps[1] >> 16) & 0xffff;
1421        break;
1422    case 0x454: /* DMA_CAPS_1_L */
1423        *ret = (s->caps[1] >>  0) & 0xffff;
1424        break;
1425
1426    case 0x456: /* DMA_CAPS_2 */
1427        *ret = s->caps[2];
1428        break;
1429
1430    case 0x458: /* DMA_CAPS_3 */
1431        *ret = s->caps[3];
1432        break;
1433
1434    case 0x45a: /* DMA_CAPS_4 */
1435        *ret = s->caps[4];
1436        break;
1437
1438    case 0x460: /* DMA_PCh2_SR */
1439    case 0x480: /* DMA_PCh0_SR */
1440    case 0x482: /* DMA_PCh1_SR */
1441    case 0x4c0: /* DMA_PChD_SR_0 */
1442        printf("%s: Physical Channel Status Registers not implemented.\n",
1443               __func__);
1444        *ret = 0xff;
1445        break;
1446
1447    default:
1448        return 1;
1449    }
1450    return 0;
1451}
1452
1453static uint64_t omap_dma_read(void *opaque, hwaddr addr,
1454                              unsigned size)
1455{
1456    struct omap_dma_s *s = (struct omap_dma_s *) opaque;
1457    int reg, ch;
1458    uint16_t ret;
1459
1460    if (size != 2) {
1461        return omap_badwidth_read16(opaque, addr);
1462    }
1463
1464    switch (addr) {
1465    case 0x300 ... 0x3fe:
1466        if (s->model <= omap_dma_3_1 || !s->omap_3_1_mapping_disabled) {
1467            if (omap_dma_3_1_lcd_read(&s->lcd_ch, addr, &ret))
1468                break;
1469            return ret;
1470        }
1471        /* Fall through. */
1472    case 0x000 ... 0x2fe:
1473        reg = addr & 0x3f;
1474        ch = (addr >> 6) & 0x0f;
1475        if (omap_dma_ch_reg_read(s, &s->ch[ch], reg, &ret))
1476            break;
1477        return ret;
1478
1479    case 0x404 ... 0x4fe:
1480        if (s->model <= omap_dma_3_1)
1481            break;
1482        /* Fall through. */
1483    case 0x400:
1484        if (omap_dma_sys_read(s, addr, &ret))
1485            break;
1486        return ret;
1487
1488    case 0xb00 ... 0xbfe:
1489        if (s->model == omap_dma_3_2 && s->omap_3_1_mapping_disabled) {
1490            if (omap_dma_3_2_lcd_read(&s->lcd_ch, addr, &ret))
1491                break;
1492            return ret;
1493        }
1494        break;
1495    }
1496
1497    OMAP_BAD_REG(addr);
1498    return 0;
1499}
1500
1501static void omap_dma_write(void *opaque, hwaddr addr,
1502                           uint64_t value, unsigned size)
1503{
1504    struct omap_dma_s *s = (struct omap_dma_s *) opaque;
1505    int reg, ch;
1506
1507    if (size != 2) {
1508        omap_badwidth_write16(opaque, addr, value);
1509        return;
1510    }
1511
1512    switch (addr) {
1513    case 0x300 ... 0x3fe:
1514        if (s->model <= omap_dma_3_1 || !s->omap_3_1_mapping_disabled) {
1515            if (omap_dma_3_1_lcd_write(&s->lcd_ch, addr, value))
1516                break;
1517            return;
1518        }
1519        /* Fall through.  */
1520    case 0x000 ... 0x2fe:
1521        reg = addr & 0x3f;
1522        ch = (addr >> 6) & 0x0f;
1523        if (omap_dma_ch_reg_write(s, &s->ch[ch], reg, value))
1524            break;
1525        return;
1526
1527    case 0x404 ... 0x4fe:
1528        if (s->model <= omap_dma_3_1)
1529            break;
1530    case 0x400:
1531        /* Fall through. */
1532        if (omap_dma_sys_write(s, addr, value))
1533            break;
1534        return;
1535
1536    case 0xb00 ... 0xbfe:
1537        if (s->model == omap_dma_3_2 && s->omap_3_1_mapping_disabled) {
1538            if (omap_dma_3_2_lcd_write(&s->lcd_ch, addr, value))
1539                break;
1540            return;
1541        }
1542        break;
1543    }
1544
1545    OMAP_BAD_REG(addr);
1546}
1547
1548static const MemoryRegionOps omap_dma_ops = {
1549    .read = omap_dma_read,
1550    .write = omap_dma_write,
1551    .endianness = DEVICE_NATIVE_ENDIAN,
1552};
1553
1554static void omap_dma_request(void *opaque, int drq, int req)
1555{
1556    struct omap_dma_s *s = (struct omap_dma_s *) opaque;
1557    /* The request pins are level triggered in QEMU.  */
1558    if (req) {
1559        if (~s->dma->drqbmp & (1ULL << drq)) {
1560            s->dma->drqbmp |= 1ULL << drq;
1561            omap_dma_process_request(s, drq);
1562        }
1563    } else
1564        s->dma->drqbmp &= ~(1ULL << drq);
1565}
1566
1567/* XXX: this won't be needed once soc_dma knows about clocks.  */
1568static void omap_dma_clk_update(void *opaque, int line, int on)
1569{
1570    struct omap_dma_s *s = (struct omap_dma_s *) opaque;
1571    int i;
1572
1573    s->dma->freq = omap_clk_getrate(s->clk);
1574
1575    for (i = 0; i < s->chans; i ++)
1576        if (s->ch[i].active)
1577            soc_dma_set_request(s->ch[i].dma, on);
1578}
1579
1580static void omap_dma_setcaps(struct omap_dma_s *s)
1581{
1582    switch (s->model) {
1583    default:
1584    case omap_dma_3_1:
1585        break;
1586    case omap_dma_3_2:
1587    case omap_dma_4:
1588        /* XXX Only available for sDMA */
1589        s->caps[0] =
1590                (1 << 19) |     /* Constant Fill Capability */
1591                (1 << 18);      /* Transparent BLT Capability */
1592        s->caps[1] =
1593                (1 << 1);       /* 1-bit palettized capability (DMA 3.2 only) */
1594        s->caps[2] =
1595                (1 << 8) |      /* SEPARATE_SRC_AND_DST_INDEX_CPBLTY */
1596                (1 << 7) |      /* DST_DOUBLE_INDEX_ADRS_CPBLTY */
1597                (1 << 6) |      /* DST_SINGLE_INDEX_ADRS_CPBLTY */
1598                (1 << 5) |      /* DST_POST_INCRMNT_ADRS_CPBLTY */
1599                (1 << 4) |      /* DST_CONST_ADRS_CPBLTY */
1600                (1 << 3) |      /* SRC_DOUBLE_INDEX_ADRS_CPBLTY */
1601                (1 << 2) |      /* SRC_SINGLE_INDEX_ADRS_CPBLTY */
1602                (1 << 1) |      /* SRC_POST_INCRMNT_ADRS_CPBLTY */
1603                (1 << 0);       /* SRC_CONST_ADRS_CPBLTY */
1604        s->caps[3] =
1605                (1 << 6) |      /* BLOCK_SYNCHR_CPBLTY (DMA 4 only) */
1606                (1 << 7) |      /* PKT_SYNCHR_CPBLTY (DMA 4 only) */
1607                (1 << 5) |      /* CHANNEL_CHAINING_CPBLTY */
1608                (1 << 4) |      /* LCh_INTERLEAVE_CPBLTY */
1609                (1 << 3) |      /* AUTOINIT_REPEAT_CPBLTY (DMA 3.2 only) */
1610                (1 << 2) |      /* AUTOINIT_ENDPROG_CPBLTY (DMA 3.2 only) */
1611                (1 << 1) |      /* FRAME_SYNCHR_CPBLTY */
1612                (1 << 0);       /* ELMNT_SYNCHR_CPBLTY */
1613        s->caps[4] =
1614                (1 << 7) |      /* PKT_INTERRUPT_CPBLTY (DMA 4 only) */
1615                (1 << 6) |      /* SYNC_STATUS_CPBLTY */
1616                (1 << 5) |      /* BLOCK_INTERRUPT_CPBLTY */
1617                (1 << 4) |      /* LAST_FRAME_INTERRUPT_CPBLTY */
1618                (1 << 3) |      /* FRAME_INTERRUPT_CPBLTY */
1619                (1 << 2) |      /* HALF_FRAME_INTERRUPT_CPBLTY */
1620                (1 << 1) |      /* EVENT_DROP_INTERRUPT_CPBLTY */
1621                (1 << 0);       /* TIMEOUT_INTERRUPT_CPBLTY (DMA 3.2 only) */
1622        break;
1623    }
1624}
1625
1626struct soc_dma_s *omap_dma_init(hwaddr base, qemu_irq *irqs,
1627                MemoryRegion *sysmem,
1628                qemu_irq lcd_irq, struct omap_mpu_state_s *mpu, omap_clk clk,
1629                enum omap_dma_model model)
1630{
1631    int num_irqs, memsize, i;
1632    struct omap_dma_s *s = g_new0(struct omap_dma_s, 1);
1633
1634    if (model <= omap_dma_3_1) {
1635        num_irqs = 6;
1636        memsize = 0x800;
1637    } else {
1638        num_irqs = 16;
1639        memsize = 0xc00;
1640    }
1641    s->model = model;
1642    s->mpu = mpu;
1643    s->clk = clk;
1644    s->lcd_ch.irq = lcd_irq;
1645    s->lcd_ch.mpu = mpu;
1646
1647    s->dma = soc_dma_init((model <= omap_dma_3_1) ? 9 : 16);
1648    s->dma->freq = omap_clk_getrate(clk);
1649    s->dma->transfer_fn = omap_dma_transfer_generic;
1650    s->dma->setup_fn = omap_dma_transfer_setup;
1651    s->dma->drq = qemu_allocate_irqs(omap_dma_request, s, 32);
1652    s->dma->opaque = s;
1653
1654    while (num_irqs --)
1655        s->ch[num_irqs].irq = irqs[num_irqs];
1656    for (i = 0; i < 3; i ++) {
1657        s->ch[i].sibling = &s->ch[i + 6];
1658        s->ch[i + 6].sibling = &s->ch[i];
1659    }
1660    for (i = (model <= omap_dma_3_1) ? 8 : 15; i >= 0; i --) {
1661        s->ch[i].dma = &s->dma->ch[i];
1662        s->dma->ch[i].opaque = &s->ch[i];
1663    }
1664
1665    omap_dma_setcaps(s);
1666    omap_clk_adduser(s->clk, qemu_allocate_irq(omap_dma_clk_update, s, 0));
1667    omap_dma_reset(s->dma);
1668    omap_dma_clk_update(s, 0, 1);
1669
1670    memory_region_init_io(&s->iomem, NULL, &omap_dma_ops, s, "omap.dma", memsize);
1671    memory_region_add_subregion(sysmem, base, &s->iomem);
1672
1673    mpu->drq = s->dma->drq;
1674
1675    return s->dma;
1676}
1677
1678static void omap_dma_interrupts_4_update(struct omap_dma_s *s)
1679{
1680    struct omap_dma_channel_s *ch = s->ch;
1681    uint32_t bmp, bit;
1682
1683    for (bmp = 0, bit = 1; bit; ch ++, bit <<= 1)
1684        if (ch->status) {
1685            bmp |= bit;
1686            ch->cstatus |= ch->status;
1687            ch->status = 0;
1688        }
1689    if ((s->irqstat[0] |= s->irqen[0] & bmp))
1690        qemu_irq_raise(s->irq[0]);
1691    if ((s->irqstat[1] |= s->irqen[1] & bmp))
1692        qemu_irq_raise(s->irq[1]);
1693    if ((s->irqstat[2] |= s->irqen[2] & bmp))
1694        qemu_irq_raise(s->irq[2]);
1695    if ((s->irqstat[3] |= s->irqen[3] & bmp))
1696        qemu_irq_raise(s->irq[3]);
1697}
1698
1699static uint64_t omap_dma4_read(void *opaque, hwaddr addr,
1700                               unsigned size)
1701{
1702    struct omap_dma_s *s = (struct omap_dma_s *) opaque;
1703    int irqn = 0, chnum;
1704    struct omap_dma_channel_s *ch;
1705
1706    if (size == 1) {
1707        return omap_badwidth_read16(opaque, addr);
1708    }
1709
1710    switch (addr) {
1711    case 0x00:  /* DMA4_REVISION */
1712        return 0x40;
1713
1714    case 0x14:  /* DMA4_IRQSTATUS_L3 */
1715        irqn ++;
1716        /* fall through */
1717    case 0x10:  /* DMA4_IRQSTATUS_L2 */
1718        irqn ++;
1719        /* fall through */
1720    case 0x0c:  /* DMA4_IRQSTATUS_L1 */
1721        irqn ++;
1722        /* fall through */
1723    case 0x08:  /* DMA4_IRQSTATUS_L0 */
1724        return s->irqstat[irqn];
1725
1726    case 0x24:  /* DMA4_IRQENABLE_L3 */
1727        irqn ++;
1728        /* fall through */
1729    case 0x20:  /* DMA4_IRQENABLE_L2 */
1730        irqn ++;
1731        /* fall through */
1732    case 0x1c:  /* DMA4_IRQENABLE_L1 */
1733        irqn ++;
1734        /* fall through */
1735    case 0x18:  /* DMA4_IRQENABLE_L0 */
1736        return s->irqen[irqn];
1737
1738    case 0x28:  /* DMA4_SYSSTATUS */
1739        return 1;                                               /* RESETDONE */
1740
1741    case 0x2c:  /* DMA4_OCP_SYSCONFIG */
1742        return s->ocp;
1743
1744    case 0x64:  /* DMA4_CAPS_0 */
1745        return s->caps[0];
1746    case 0x6c:  /* DMA4_CAPS_2 */
1747        return s->caps[2];
1748    case 0x70:  /* DMA4_CAPS_3 */
1749        return s->caps[3];
1750    case 0x74:  /* DMA4_CAPS_4 */
1751        return s->caps[4];
1752
1753    case 0x78:  /* DMA4_GCR */
1754        return s->gcr;
1755
1756    case 0x80 ... 0xfff:
1757        addr -= 0x80;
1758        chnum = addr / 0x60;
1759        ch = s->ch + chnum;
1760        addr -= chnum * 0x60;
1761        break;
1762
1763    default:
1764        OMAP_BAD_REG(addr);
1765        return 0;
1766    }
1767
1768    /* Per-channel registers */
1769    switch (addr) {
1770    case 0x00:  /* DMA4_CCR */
1771        return (ch->buf_disable << 25) |
1772                (ch->src_sync << 24) |
1773                (ch->prefetch << 23) |
1774                ((ch->sync & 0x60) << 14) |
1775                (ch->bs << 18) |
1776                (ch->transparent_copy << 17) |
1777                (ch->constant_fill << 16) |
1778                (ch->mode[1] << 14) |
1779                (ch->mode[0] << 12) |
1780                (0 << 10) | (0 << 9) |
1781                (ch->suspend << 8) |
1782                (ch->enable << 7) |
1783                (ch->priority << 6) |
1784                (ch->fs << 5) | (ch->sync & 0x1f);
1785
1786    case 0x04:  /* DMA4_CLNK_CTRL */
1787        return (ch->link_enabled << 15) | ch->link_next_ch;
1788
1789    case 0x08:  /* DMA4_CICR */
1790        return ch->interrupts;
1791
1792    case 0x0c:  /* DMA4_CSR */
1793        return ch->cstatus;
1794
1795    case 0x10:  /* DMA4_CSDP */
1796        return (ch->endian[0] << 21) |
1797                (ch->endian_lock[0] << 20) |
1798                (ch->endian[1] << 19) |
1799                (ch->endian_lock[1] << 18) |
1800                (ch->write_mode << 16) |
1801                (ch->burst[1] << 14) |
1802                (ch->pack[1] << 13) |
1803                (ch->translate[1] << 9) |
1804                (ch->burst[0] << 7) |
1805                (ch->pack[0] << 6) |
1806                (ch->translate[0] << 2) |
1807                (ch->data_type >> 1);
1808
1809    case 0x14:  /* DMA4_CEN */
1810        return ch->elements;
1811
1812    case 0x18:  /* DMA4_CFN */
1813        return ch->frames;
1814
1815    case 0x1c:  /* DMA4_CSSA */
1816        return ch->addr[0];
1817
1818    case 0x20:  /* DMA4_CDSA */
1819        return ch->addr[1];
1820
1821    case 0x24:  /* DMA4_CSEI */
1822        return ch->element_index[0];
1823
1824    case 0x28:  /* DMA4_CSFI */
1825        return ch->frame_index[0];
1826
1827    case 0x2c:  /* DMA4_CDEI */
1828        return ch->element_index[1];
1829
1830    case 0x30:  /* DMA4_CDFI */
1831        return ch->frame_index[1];
1832
1833    case 0x34:  /* DMA4_CSAC */
1834        return ch->active_set.src & 0xffff;
1835
1836    case 0x38:  /* DMA4_CDAC */
1837        return ch->active_set.dest & 0xffff;
1838
1839    case 0x3c:  /* DMA4_CCEN */
1840        return ch->active_set.element;
1841
1842    case 0x40:  /* DMA4_CCFN */
1843        return ch->active_set.frame;
1844
1845    case 0x44:  /* DMA4_COLOR */
1846        /* XXX only in sDMA */
1847        return ch->color;
1848
1849    default:
1850        OMAP_BAD_REG(addr);
1851        return 0;
1852    }
1853}
1854
1855static void omap_dma4_write(void *opaque, hwaddr addr,
1856                            uint64_t value, unsigned size)
1857{
1858    struct omap_dma_s *s = (struct omap_dma_s *) opaque;
1859    int chnum, irqn = 0;
1860    struct omap_dma_channel_s *ch;
1861
1862    if (size == 1) {
1863        omap_badwidth_write16(opaque, addr, value);
1864        return;
1865    }
1866
1867    switch (addr) {
1868    case 0x14:  /* DMA4_IRQSTATUS_L3 */
1869        irqn ++;
1870        /* fall through */
1871    case 0x10:  /* DMA4_IRQSTATUS_L2 */
1872        irqn ++;
1873        /* fall through */
1874    case 0x0c:  /* DMA4_IRQSTATUS_L1 */
1875        irqn ++;
1876        /* fall through */
1877    case 0x08:  /* DMA4_IRQSTATUS_L0 */
1878        s->irqstat[irqn] &= ~value;
1879        if (!s->irqstat[irqn])
1880            qemu_irq_lower(s->irq[irqn]);
1881        return;
1882
1883    case 0x24:  /* DMA4_IRQENABLE_L3 */
1884        irqn ++;
1885        /* fall through */
1886    case 0x20:  /* DMA4_IRQENABLE_L2 */
1887        irqn ++;
1888        /* fall through */
1889    case 0x1c:  /* DMA4_IRQENABLE_L1 */
1890        irqn ++;
1891        /* fall through */
1892    case 0x18:  /* DMA4_IRQENABLE_L0 */
1893        s->irqen[irqn] = value;
1894        return;
1895
1896    case 0x2c:  /* DMA4_OCP_SYSCONFIG */
1897        if (value & 2)                                          /* SOFTRESET */
1898            omap_dma_reset(s->dma);
1899        s->ocp = value & 0x3321;
1900        if (((s->ocp >> 12) & 3) == 3)                          /* MIDLEMODE */
1901            fprintf(stderr, "%s: invalid DMA power mode\n", __func__);
1902        return;
1903
1904    case 0x78:  /* DMA4_GCR */
1905        s->gcr = value & 0x00ff00ff;
1906        if ((value & 0xff) == 0x00)             /* MAX_CHANNEL_FIFO_DEPTH */
1907            fprintf(stderr, "%s: wrong FIFO depth in GCR\n", __func__);
1908        return;
1909
1910    case 0x80 ... 0xfff:
1911        addr -= 0x80;
1912        chnum = addr / 0x60;
1913        ch = s->ch + chnum;
1914        addr -= chnum * 0x60;
1915        break;
1916
1917    case 0x00:  /* DMA4_REVISION */
1918    case 0x28:  /* DMA4_SYSSTATUS */
1919    case 0x64:  /* DMA4_CAPS_0 */
1920    case 0x6c:  /* DMA4_CAPS_2 */
1921    case 0x70:  /* DMA4_CAPS_3 */
1922    case 0x74:  /* DMA4_CAPS_4 */
1923        OMAP_RO_REG(addr);
1924        return;
1925
1926    default:
1927        OMAP_BAD_REG(addr);
1928        return;
1929    }
1930
1931    /* Per-channel registers */
1932    switch (addr) {
1933    case 0x00:  /* DMA4_CCR */
1934        ch->buf_disable = (value >> 25) & 1;
1935        ch->src_sync = (value >> 24) & 1;       /* XXX For CamDMA must be 1 */
1936        if (ch->buf_disable && !ch->src_sync)
1937            fprintf(stderr, "%s: Buffering disable is not allowed in "
1938                            "destination synchronised mode\n", __func__);
1939        ch->prefetch = (value >> 23) & 1;
1940        ch->bs = (value >> 18) & 1;
1941        ch->transparent_copy = (value >> 17) & 1;
1942        ch->constant_fill = (value >> 16) & 1;
1943        ch->mode[1] = (omap_dma_addressing_t) ((value & 0xc000) >> 14);
1944        ch->mode[0] = (omap_dma_addressing_t) ((value & 0x3000) >> 12);
1945        ch->suspend = (value & 0x0100) >> 8;
1946        ch->priority = (value & 0x0040) >> 6;
1947        ch->fs = (value & 0x0020) >> 5;
1948        if (ch->fs && ch->bs && ch->mode[0] && ch->mode[1])
1949            fprintf(stderr, "%s: For a packet transfer at least one port "
1950                            "must be constant-addressed\n", __func__);
1951        ch->sync = (value & 0x001f) | ((value >> 14) & 0x0060);
1952        /* XXX must be 0x01 for CamDMA */
1953
1954        if (value & 0x0080)
1955            omap_dma_enable_channel(s, ch);
1956        else
1957            omap_dma_disable_channel(s, ch);
1958
1959        break;
1960
1961    case 0x04:  /* DMA4_CLNK_CTRL */
1962        ch->link_enabled = (value >> 15) & 0x1;
1963        ch->link_next_ch = value & 0x1f;
1964        break;
1965
1966    case 0x08:  /* DMA4_CICR */
1967        ch->interrupts = value & 0x09be;
1968        break;
1969
1970    case 0x0c:  /* DMA4_CSR */
1971        ch->cstatus &= ~value;
1972        break;
1973
1974    case 0x10:  /* DMA4_CSDP */
1975        ch->endian[0] =(value >> 21) & 1;
1976        ch->endian_lock[0] =(value >> 20) & 1;
1977        ch->endian[1] =(value >> 19) & 1;
1978        ch->endian_lock[1] =(value >> 18) & 1;
1979        if (ch->endian[0] != ch->endian[1])
1980            fprintf(stderr, "%s: DMA endianness conversion enable attempt\n",
1981                            __func__);
1982        ch->write_mode = (value >> 16) & 3;
1983        ch->burst[1] = (value & 0xc000) >> 14;
1984        ch->pack[1] = (value & 0x2000) >> 13;
1985        ch->translate[1] = (value & 0x1e00) >> 9;
1986        ch->burst[0] = (value & 0x0180) >> 7;
1987        ch->pack[0] = (value & 0x0040) >> 6;
1988        ch->translate[0] = (value & 0x003c) >> 2;
1989        if (ch->translate[0] | ch->translate[1])
1990            fprintf(stderr, "%s: bad MReqAddressTranslate sideband signal\n",
1991                            __func__);
1992        ch->data_type = 1 << (value & 3);
1993        if ((value & 3) == 3) {
1994            printf("%s: bad data_type for DMA channel\n", __func__);
1995            ch->data_type >>= 1;
1996        }
1997        break;
1998
1999    case 0x14:  /* DMA4_CEN */
2000        ch->set_update = 1;
2001        ch->elements = value & 0xffffff;
2002        break;
2003
2004    case 0x18:  /* DMA4_CFN */
2005        ch->frames = value & 0xffff;
2006        ch->set_update = 1;
2007        break;
2008
2009    case 0x1c:  /* DMA4_CSSA */
2010        ch->addr[0] = (hwaddr) (uint32_t) value;
2011        ch->set_update = 1;
2012        break;
2013
2014    case 0x20:  /* DMA4_CDSA */
2015        ch->addr[1] = (hwaddr) (uint32_t) value;
2016        ch->set_update = 1;
2017        break;
2018
2019    case 0x24:  /* DMA4_CSEI */
2020        ch->element_index[0] = (int16_t) value;
2021        ch->set_update = 1;
2022        break;
2023
2024    case 0x28:  /* DMA4_CSFI */
2025        ch->frame_index[0] = (int32_t) value;
2026        ch->set_update = 1;
2027        break;
2028
2029    case 0x2c:  /* DMA4_CDEI */
2030        ch->element_index[1] = (int16_t) value;
2031        ch->set_update = 1;
2032        break;
2033
2034    case 0x30:  /* DMA4_CDFI */
2035        ch->frame_index[1] = (int32_t) value;
2036        ch->set_update = 1;
2037        break;
2038
2039    case 0x44:  /* DMA4_COLOR */
2040        /* XXX only in sDMA */
2041        ch->color = value;
2042        break;
2043
2044    case 0x34:  /* DMA4_CSAC */
2045    case 0x38:  /* DMA4_CDAC */
2046    case 0x3c:  /* DMA4_CCEN */
2047    case 0x40:  /* DMA4_CCFN */
2048        OMAP_RO_REG(addr);
2049        break;
2050
2051    default:
2052        OMAP_BAD_REG(addr);
2053    }
2054}
2055
2056static const MemoryRegionOps omap_dma4_ops = {
2057    .read = omap_dma4_read,
2058    .write = omap_dma4_write,
2059    .endianness = DEVICE_NATIVE_ENDIAN,
2060};
2061
2062struct soc_dma_s *omap_dma4_init(hwaddr base, qemu_irq *irqs,
2063                MemoryRegion *sysmem,
2064                struct omap_mpu_state_s *mpu, int fifo,
2065                int chans, omap_clk iclk, omap_clk fclk)
2066{
2067    int i;
2068    struct omap_dma_s *s = g_new0(struct omap_dma_s, 1);
2069
2070    s->model = omap_dma_4;
2071    s->chans = chans;
2072    s->mpu = mpu;
2073    s->clk = fclk;
2074
2075    s->dma = soc_dma_init(s->chans);
2076    s->dma->freq = omap_clk_getrate(fclk);
2077    s->dma->transfer_fn = omap_dma_transfer_generic;
2078    s->dma->setup_fn = omap_dma_transfer_setup;
2079    s->dma->drq = qemu_allocate_irqs(omap_dma_request, s, 64);
2080    s->dma->opaque = s;
2081    for (i = 0; i < s->chans; i ++) {
2082        s->ch[i].dma = &s->dma->ch[i];
2083        s->dma->ch[i].opaque = &s->ch[i];
2084    }
2085
2086    memcpy(&s->irq, irqs, sizeof(s->irq));
2087    s->intr_update = omap_dma_interrupts_4_update;
2088
2089    omap_dma_setcaps(s);
2090    omap_clk_adduser(s->clk, qemu_allocate_irq(omap_dma_clk_update, s, 0));
2091    omap_dma_reset(s->dma);
2092    omap_dma_clk_update(s, 0, !!s->dma->freq);
2093
2094    memory_region_init_io(&s->iomem, NULL, &omap_dma4_ops, s, "omap.dma4", 0x1000);
2095    memory_region_add_subregion(sysmem, base, &s->iomem);
2096
2097    mpu->drq = s->dma->drq;
2098
2099    return s->dma;
2100}
2101
2102struct omap_dma_lcd_channel_s *omap_dma_get_lcdch(struct soc_dma_s *dma)
2103{
2104    struct omap_dma_s *s = dma->opaque;
2105
2106    return &s->lcd_ch;
2107}
2108