hw/musicpal.c

   1 /*
   2  * Marvell MV88W8618 / Freecom MusicPal emulation.
   3  *
   4  * Copyright (c) 2008 Jan Kiszka
   5  *
   6  * This code is licenced under the GNU GPL v2.
   7  */
   8
   9 #include "hw.h"
  10 #include "arm-misc.h"
  11 #include "devices.h"
  12 #include "net.h"
  13 #include "sysemu.h"
  14 #include "boards.h"
  15 #include "pc.h"
  16 #include "qemu-timer.h"
  17 #include "block.h"
  18 #include "flash.h"
  19 #include "console.h"
  20 #include "audio/audio.h"
  21 #include "i2c.h"
  22
  23 #define MP_ETH_BASE             0x80008000
  24 #define MP_ETH_SIZE             0x00001000
  25
  26 #define MP_UART1_BASE           0x8000C840
  27 #define MP_UART2_BASE           0x8000C940
  28
  29 #define MP_FLASHCFG_BASE        0x90006000
  30 #define MP_FLASHCFG_SIZE        0x00001000
  31
  32 #define MP_AUDIO_BASE           0x90007000
  33 #define MP_AUDIO_SIZE           0x00001000
  34
  35 #define MP_PIC_BASE             0x90008000
  36 #define MP_PIC_SIZE             0x00001000
  37
  38 #define MP_PIT_BASE             0x90009000
  39 #define MP_PIT_SIZE             0x00001000
  40
  41 #define MP_LCD_BASE             0x9000c000
  42 #define MP_LCD_SIZE             0x00001000
  43
  44 #define MP_SRAM_BASE            0xC0000000
  45 #define MP_SRAM_SIZE            0x00020000
  46
  47 #define MP_RAM_DEFAULT_SIZE     32*1024*1024
  48 #define MP_FLASH_SIZE_MAX       32*1024*1024
  49
  50 #define MP_TIMER1_IRQ           4
  51 /* ... */
  52 #define MP_TIMER4_IRQ           7
  53 #define MP_EHCI_IRQ             8
  54 #define MP_ETH_IRQ              9
  55 #define MP_UART1_IRQ            11
  56 #define MP_UART2_IRQ            11
  57 #define MP_GPIO_IRQ             12
  58 #define MP_RTC_IRQ              28
  59 #define MP_AUDIO_IRQ            30
  60
  61 static uint32_t gpio_in_state = 0xffffffff;
  62 static uint32_t gpio_isr;
  63 static uint32_t gpio_out_state;
  64 static ram_addr_t sram_off;
  65
  66 /* Address conversion helpers */
  67 static void *target2host_addr(uint32_t addr)
  68 {
  69     if (addr < MP_SRAM_BASE) {
  70         if (addr >= MP_RAM_DEFAULT_SIZE)
  71             return NULL;
  72         return (void *)(phys_ram_base + addr);
  73     } else {
  74         if (addr >= MP_SRAM_BASE + MP_SRAM_SIZE)
  75             return NULL;
  76         return (void *)(phys_ram_base + sram_off + addr - MP_SRAM_BASE);
  77     }
  78 }
  79
  80 static uint32_t host2target_addr(void *addr)
  81 {
  82     if (addr < ((void *)phys_ram_base) + sram_off)
  83         return (unsigned long)addr - (unsigned long)phys_ram_base;
  84     else
  85         return (unsigned long)addr - (unsigned long)phys_ram_base -
  86             sram_off + MP_SRAM_BASE;
  87 }
  88
  89
  90 typedef enum i2c_state {
  91     STOPPED = 0,
  92     INITIALIZING,
  93     SENDING_BIT7,
  94     SENDING_BIT6,
  95     SENDING_BIT5,
  96     SENDING_BIT4,
  97     SENDING_BIT3,
  98     SENDING_BIT2,
  99     SENDING_BIT1,
 100     SENDING_BIT0,
 101     WAITING_FOR_ACK,
 102     RECEIVING_BIT7,
 103     RECEIVING_BIT6,
 104     RECEIVING_BIT5,
 105     RECEIVING_BIT4,
 106     RECEIVING_BIT3,
 107     RECEIVING_BIT2,
 108     RECEIVING_BIT1,
 109     RECEIVING_BIT0,
 110     SENDING_ACK
 111 } i2c_state;
 112
 113 typedef struct i2c_interface {
 114     i2c_bus *bus;
 115     i2c_state state;
 116     int last_data;
 117     int last_clock;
 118     uint8_t buffer;
 119     int current_addr;
 120 } i2c_interface;
 121
 122 static void i2c_enter_stop(i2c_interface *i2c)
 123 {
 124     if (i2c->current_addr >= 0)
 125         i2c_end_transfer(i2c->bus);
 126     i2c->current_addr = -1;
 127     i2c->state = STOPPED;
 128 }
 129
 130 static void i2c_state_update(i2c_interface *i2c, int data, int clock)
 131 {
 132     if (!i2c)
 133         return;
 134
 135     switch (i2c->state) {
 136     case STOPPED:
 137         if (data == 0 && i2c->last_data == 1 && clock == 1)
 138             i2c->state = INITIALIZING;
 139         break;
 140
 141     case INITIALIZING:
 142         if (clock == 0 && i2c->last_clock == 1 && data == 0)
 143             i2c->state = SENDING_BIT7;
 144         else
 145             i2c_enter_stop(i2c);
 146         break;
 147
 148     case SENDING_BIT7 ... SENDING_BIT0:
 149         if (clock == 0 && i2c->last_clock == 1) {
 150             i2c->buffer = (i2c->buffer << 1) | data;
 151             i2c->state++; /* will end up in WAITING_FOR_ACK */
 152         } else if (data == 1 && i2c->last_data == 0 && clock == 1)
 153             i2c_enter_stop(i2c);
 154         break;
 155
 156     case WAITING_FOR_ACK:
 157         if (clock == 0 && i2c->last_clock == 1) {
 158             if (i2c->current_addr < 0) {
 159                 i2c->current_addr = i2c->buffer;
 160                 i2c_start_transfer(i2c->bus, i2c->current_addr & 0xfe,
 161                                    i2c->buffer & 1);
 162             } else
 163                 i2c_send(i2c->bus, i2c->buffer);
 164             if (i2c->current_addr & 1) {
 165                 i2c->state = RECEIVING_BIT7;
 166                 i2c->buffer = i2c_recv(i2c->bus);
 167             } else
 168                 i2c->state = SENDING_BIT7;
 169         } else if (data == 1 && i2c->last_data == 0 && clock == 1)
 170             i2c_enter_stop(i2c);
 171         break;
 172
 173     case RECEIVING_BIT7 ... RECEIVING_BIT0:
 174         if (clock == 0 && i2c->last_clock == 1) {
 175             i2c->state++; /* will end up in SENDING_ACK */
 176             i2c->buffer <<= 1;
 177         } else if (data == 1 && i2c->last_data == 0 && clock == 1)
 178             i2c_enter_stop(i2c);
 179         break;
 180
 181     case SENDING_ACK:
 182         if (clock == 0 && i2c->last_clock == 1) {
 183             i2c->state = RECEIVING_BIT7;
 184             if (data == 0)
 185                 i2c->buffer = i2c_recv(i2c->bus);
 186             else
 187                 i2c_nack(i2c->bus);
 188         } else if (data == 1 && i2c->last_data == 0 && clock == 1)
 189             i2c_enter_stop(i2c);
 190         break;
 191     }
 192
 193     i2c->last_data = data;
 194     i2c->last_clock = clock;
 195 }
 196
 197 static int i2c_get_data(i2c_interface *i2c)
 198 {
 199     if (!i2c)
 200         return 0;
 201
 202     switch (i2c->state) {
 203     case RECEIVING_BIT7 ... RECEIVING_BIT0:
 204         return (i2c->buffer >> 7);
 205
 206     case WAITING_FOR_ACK:
 207     default:
 208         return 0;
 209     }
 210 }
 211
 212 static i2c_interface *mixer_i2c;
 213
 214 #ifdef HAS_AUDIO
 215
 216 /* Audio register offsets */
 217 #define MP_AUDIO_PLAYBACK_MODE  0x00
 218 #define MP_AUDIO_CLOCK_DIV      0x18
 219 #define MP_AUDIO_IRQ_STATUS     0x20
 220 #define MP_AUDIO_IRQ_ENABLE     0x24
 221 #define MP_AUDIO_TX_START_LO    0x28
 222 #define MP_AUDIO_TX_THRESHOLD   0x2C
 223 #define MP_AUDIO_TX_STATUS      0x38
 224 #define MP_AUDIO_TX_START_HI    0x40
 225
 226 /* Status register and IRQ enable bits */
 227 #define MP_AUDIO_TX_HALF        (1 << 6)
 228 #define MP_AUDIO_TX_FULL        (1 << 7)
 229
 230 /* Playback mode bits */
 231 #define MP_AUDIO_16BIT_SAMPLE   (1 << 0)
 232 #define MP_AUDIO_PLAYBACK_EN    (1 << 7)
 233 #define MP_AUDIO_CLOCK_24MHZ    (1 << 9)
 234 #define MP_AUDIO_MONO           (1 << 14)
 235
 236 /* Wolfson 8750 I2C address */
 237 #define MP_WM_ADDR              0x34
 238
 239 const char audio_name[] = "mv88w8618";
 240
 241 typedef struct musicpal_audio_state {
 242     uint32_t base;
 243     qemu_irq irq;
 244     uint32_t playback_mode;
 245     uint32_t status;
 246     uint32_t irq_enable;
 247     unsigned long phys_buf;
 248     int8_t *target_buffer;
 249     unsigned int threshold;
 250     unsigned int play_pos;
 251     unsigned int last_free;
 252     uint32_t clock_div;
 253     i2c_slave *wm;
 254 } musicpal_audio_state;
 255
 256 static void audio_callback(void *opaque, int free_out, int free_in)
 257 {
 258     musicpal_audio_state *s = opaque;
 259     int16_t *codec_buffer;
 260     int8_t *mem_buffer;
 261     int pos, block_size;
 262
 263     if (!(s->playback_mode & MP_AUDIO_PLAYBACK_EN))
 264         return;
 265
 266     if (s->playback_mode & MP_AUDIO_16BIT_SAMPLE)
 267         free_out <<= 1;
 268
 269     if (!(s->playback_mode & MP_AUDIO_MONO))
 270         free_out <<= 1;
 271
 272     block_size = s->threshold/2;
 273     if (free_out - s->last_free < block_size)
 274         return;
 275
 276     mem_buffer = s->target_buffer + s->play_pos;
 277     if (s->playback_mode & MP_AUDIO_16BIT_SAMPLE) {
 278         if (s->playback_mode & MP_AUDIO_MONO) {
 279             codec_buffer = wm8750_dac_buffer(s->wm, block_size >> 1);
 280             for (pos = 0; pos < block_size; pos += 2) {
 281                 *codec_buffer++ = *(int16_t *)mem_buffer;
 282                 *codec_buffer++ = *(int16_t *)mem_buffer;
 283                 mem_buffer += 2;
 284             }
 285         } else
 286             memcpy(wm8750_dac_buffer(s->wm, block_size >> 2),
 287                    (uint32_t *)mem_buffer, block_size);
 288     } else {
 289         if (s->playback_mode & MP_AUDIO_MONO) {
 290             codec_buffer = wm8750_dac_buffer(s->wm, block_size);
 291             for (pos = 0; pos < block_size; pos++) {
 292                 *codec_buffer++ = cpu_to_le16(256 * *mem_buffer);
 293                 *codec_buffer++ = cpu_to_le16(256 * *mem_buffer++);
 294             }
 295         } else {
 296             codec_buffer = wm8750_dac_buffer(s->wm, block_size >> 1);
 297             for (pos = 0; pos < block_size; pos += 2) {
 298                 *codec_buffer++ = cpu_to_le16(256 * *mem_buffer++);
 299                 *codec_buffer++ = cpu_to_le16(256 * *mem_buffer++);
 300             }
 301         }
 302     }
 303     wm8750_dac_commit(s->wm);
 304
 305     s->last_free = free_out - block_size;
 306
 307     if (s->play_pos == 0) {
 308         s->status |= MP_AUDIO_TX_HALF;
 309         s->play_pos = block_size;
 310     } else {
 311         s->status |= MP_AUDIO_TX_FULL;
 312         s->play_pos = 0;
 313     }
 314
 315     if (s->status & s->irq_enable)
 316         qemu_irq_raise(s->irq);
 317 }
 318
 319 static void musicpal_audio_clock_update(musicpal_audio_state *s)
 320 {
 321     int rate;
 322
 323     if (s->playback_mode & MP_AUDIO_CLOCK_24MHZ)
 324         rate = 24576000 / 64; /* 24.576MHz */
 325     else
 326         rate = 11289600 / 64; /* 11.2896MHz */
 327
 328     rate /= ((s->clock_div >> 8) & 0xff) + 1;
 329
 330     wm8750_set_bclk_in(s->wm, rate);
 331 }
 332
 333 static uint32_t musicpal_audio_read(void *opaque, target_phys_addr_t offset)
 334 {
 335     musicpal_audio_state *s = opaque;
 336
 337     offset -= s->base;
 338     switch (offset) {
 339     case MP_AUDIO_PLAYBACK_MODE:
 340         return s->playback_mode;
 341
 342     case MP_AUDIO_CLOCK_DIV:
 343         return s->clock_div;
 344
 345     case MP_AUDIO_IRQ_STATUS:
 346         return s->status;
 347
 348     case MP_AUDIO_IRQ_ENABLE:
 349         return s->irq_enable;
 350
 351     case MP_AUDIO_TX_STATUS:
 352         return s->play_pos >> 2;
 353
 354     default:
 355         return 0;
 356     }
 357 }
 358
 359 static void musicpal_audio_write(void *opaque, target_phys_addr_t offset,
 360                                  uint32_t value)
 361 {
 362     musicpal_audio_state *s = opaque;
 363
 364     offset -= s->base;
 365     switch (offset) {
 366     case MP_AUDIO_PLAYBACK_MODE:
 367         if (value & MP_AUDIO_PLAYBACK_EN &&
 368             !(s->playback_mode & MP_AUDIO_PLAYBACK_EN)) {
 369             s->status = 0;
 370             s->last_free = 0;
 371             s->play_pos = 0;
 372         }
 373         s->playback_mode = value;
 374         musicpal_audio_clock_update(s);
 375         break;
 376
 377     case MP_AUDIO_CLOCK_DIV:
 378         s->clock_div = value;
 379         s->last_free = 0;
 380         s->play_pos = 0;
 381         musicpal_audio_clock_update(s);
 382         break;
 383
 384     case MP_AUDIO_IRQ_STATUS:
 385         s->status &= ~value;
 386         break;
 387
 388     case MP_AUDIO_IRQ_ENABLE:
 389         s->irq_enable = value;
 390         if (s->status & s->irq_enable)
 391             qemu_irq_raise(s->irq);
 392         break;
 393
 394     case MP_AUDIO_TX_START_LO:
 395         s->phys_buf = (s->phys_buf & 0xFFFF0000) | (value & 0xFFFF);
 396         s->target_buffer = target2host_addr(s->phys_buf);
 397         s->play_pos = 0;
 398         s->last_free = 0;
 399         break;
 400
 401     case MP_AUDIO_TX_THRESHOLD:
 402         s->threshold = (value + 1) * 4;
 403         break;
 404
 405     case MP_AUDIO_TX_START_HI:
 406         s->phys_buf = (s->phys_buf & 0xFFFF) | (value << 16);
 407         s->target_buffer = target2host_addr(s->phys_buf);
 408         s->play_pos = 0;
 409         s->last_free = 0;
 410         break;
 411     }
 412 }
 413
 414 static void musicpal_audio_reset(void *opaque)
 415 {
 416     musicpal_audio_state *s = opaque;
 417
 418     s->playback_mode = 0;
 419     s->status = 0;
 420     s->irq_enable = 0;
 421 }
 422
 423 static CPUReadMemoryFunc *musicpal_audio_readfn[] = {
 424     musicpal_audio_read,
 425     musicpal_audio_read,
 426     musicpal_audio_read
 427 };
 428
 429 static CPUWriteMemoryFunc *musicpal_audio_writefn[] = {
 430     musicpal_audio_write,
 431     musicpal_audio_write,
 432     musicpal_audio_write
 433 };
 434
 435 static i2c_interface *musicpal_audio_init(uint32_t base, qemu_irq irq)
 436 {
 437     AudioState *audio;
 438     musicpal_audio_state *s;
 439     i2c_interface *i2c;
 440     int iomemtype;
 441
 442     audio = AUD_init();
 443     if (!audio) {
 444         AUD_log(audio_name, "No audio state\n");
 445         return NULL;
 446     }
 447
 448     s = qemu_mallocz(sizeof(musicpal_audio_state));
 449     if (!s)
 450         return NULL;
 451     s->base = base;
 452     s->irq = irq;
 453
 454     i2c = qemu_mallocz(sizeof(i2c_interface));
 455     if (!i2c)
 456         return NULL;
 457     i2c->bus = i2c_init_bus();
 458     i2c->current_addr = -1;
 459
 460     s->wm = wm8750_init(i2c->bus, audio);
 461     if (!s->wm)
 462         return NULL;
 463     i2c_set_slave_address(s->wm, MP_WM_ADDR);
 464     wm8750_data_req_set(s->wm, audio_callback, s);
 465
 466     iomemtype = cpu_register_io_memory(0, musicpal_audio_readfn,
 467                        musicpal_audio_writefn, s);
 468     cpu_register_physical_memory(base, MP_AUDIO_SIZE, iomemtype);
 469
 470     qemu_register_reset(musicpal_audio_reset, s);
 471
 472     return i2c;
 473 }
 474 #else  /* !HAS_AUDIO */
 475 static i2c_interface *musicpal_audio_init(uint32_t base, qemu_irq irq)
 476 {
 477     return NULL;
 478 }
 479 #endif /* !HAS_AUDIO */
 480
 481 /* Ethernet register offsets */
 482 #define MP_ETH_SMIR             0x010
 483 #define MP_ETH_PCXR             0x408
 484 #define MP_ETH_SDCMR            0x448
 485 #define MP_ETH_ICR              0x450
 486 #define MP_ETH_IMR              0x458
 487 #define MP_ETH_FRDP0            0x480
 488 #define MP_ETH_FRDP1            0x484
 489 #define MP_ETH_FRDP2            0x488
 490 #define MP_ETH_FRDP3            0x48C
 491 #define MP_ETH_CRDP0            0x4A0
 492 #define MP_ETH_CRDP1            0x4A4
 493 #define MP_ETH_CRDP2            0x4A8
 494 #define MP_ETH_CRDP3            0x4AC
 495 #define MP_ETH_CTDP0            0x4E0
 496 #define MP_ETH_CTDP1            0x4E4
 497 #define MP_ETH_CTDP2            0x4E8
 498 #define MP_ETH_CTDP3            0x4EC
 499
 500 /* MII PHY access */
 501 #define MP_ETH_SMIR_DATA        0x0000FFFF
 502 #define MP_ETH_SMIR_ADDR        0x03FF0000
 503 #define MP_ETH_SMIR_OPCODE      (1 << 26) /* Read value */
 504 #define MP_ETH_SMIR_RDVALID     (1 << 27)
 505
 506 /* PHY registers */
 507 #define MP_ETH_PHY1_BMSR        0x00210000
 508 #define MP_ETH_PHY1_PHYSID1     0x00410000
 509 #define MP_ETH_PHY1_PHYSID2     0x00610000
 510
 511 #define MP_PHY_BMSR_LINK        0x0004
 512 #define MP_PHY_BMSR_AUTONEG     0x0008
 513
 514 #define MP_PHY_88E3015          0x01410E20
 515
 516 /* TX descriptor status */
 517 #define MP_ETH_TX_OWN           (1 << 31)
 518
 519 /* RX descriptor status */
 520 #define MP_ETH_RX_OWN           (1 << 31)
 521
 522 /* Interrupt cause/mask bits */
 523 #define MP_ETH_IRQ_RX_BIT       0
 524 #define MP_ETH_IRQ_RX           (1 << MP_ETH_IRQ_RX_BIT)
 525 #define MP_ETH_IRQ_TXHI_BIT     2
 526 #define MP_ETH_IRQ_TXLO_BIT     3
 527
 528 /* Port config bits */
 529 #define MP_ETH_PCXR_2BSM_BIT    28 /* 2-byte incoming suffix */
 530
 531 /* SDMA command bits */
 532 #define MP_ETH_CMD_TXHI         (1 << 23)
 533 #define MP_ETH_CMD_TXLO         (1 << 22)
 534
 535 typedef struct mv88w8618_tx_desc {
 536     uint32_t cmdstat;
 537     uint16_t res;
 538     uint16_t bytes;
 539     uint32_t buffer;
 540     uint32_t next;
 541 } mv88w8618_tx_desc;
 542
 543 typedef struct mv88w8618_rx_desc {
 544     uint32_t cmdstat;
 545     uint16_t bytes;
 546     uint16_t buffer_size;
 547     uint32_t buffer;
 548     uint32_t next;
 549 } mv88w8618_rx_desc;
 550
 551 typedef struct mv88w8618_eth_state {
 552     uint32_t base;
 553     qemu_irq irq;
 554     uint32_t smir;
 555     uint32_t icr;
 556     uint32_t imr;
 557     int vlan_header;
 558     mv88w8618_tx_desc *tx_queue[2];
 559     mv88w8618_rx_desc *rx_queue[4];
 560     mv88w8618_rx_desc *frx_queue[4];
 561     mv88w8618_rx_desc *cur_rx[4];
 562     VLANClientState *vc;
 563 } mv88w8618_eth_state;
 564
 565 static int eth_can_receive(void *opaque)
 566 {
 567     return 1;
 568 }
 569
 570 static void eth_receive(void *opaque, const uint8_t *buf, int size)
 571 {
 572     mv88w8618_eth_state *s = opaque;
 573     mv88w8618_rx_desc *desc;
 574     int i;
 575
 576     for (i = 0; i < 4; i++) {
 577         desc = s->cur_rx[i];
 578         if (!desc)
 579             continue;
 580         do {
 581             if (le32_to_cpu(desc->cmdstat) & MP_ETH_RX_OWN &&
 582                 le16_to_cpu(desc->buffer_size) >= size) {
 583                 memcpy(target2host_addr(le32_to_cpu(desc->buffer) +
 584                                         s->vlan_header),
 585                        buf, size);
 586                 desc->bytes = cpu_to_le16(size + s->vlan_header);
 587                 desc->cmdstat &= cpu_to_le32(~MP_ETH_RX_OWN);
 588                 s->cur_rx[i] = target2host_addr(le32_to_cpu(desc->next));
 589
 590                 s->icr |= MP_ETH_IRQ_RX;
 591                 if (s->icr & s->imr)
 592                     qemu_irq_raise(s->irq);
 593                 return;
 594             }
 595             desc = target2host_addr(le32_to_cpu(desc->next));
 596         } while (desc != s->rx_queue[i]);
 597     }
 598 }
 599
 600 static void eth_send(mv88w8618_eth_state *s, int queue_index)
 601 {
 602     mv88w8618_tx_desc *desc = s->tx_queue[queue_index];
 603
 604     do {
 605         if (le32_to_cpu(desc->cmdstat) & MP_ETH_TX_OWN) {
 606             qemu_send_packet(s->vc,
 607                              target2host_addr(le32_to_cpu(desc->buffer)),
 608                              le16_to_cpu(desc->bytes));
 609             desc->cmdstat &= cpu_to_le32(~MP_ETH_TX_OWN);
 610             s->icr |= 1 << (MP_ETH_IRQ_TXLO_BIT - queue_index);
 611         }
 612         desc = target2host_addr(le32_to_cpu(desc->next));
 613     } while (desc != s->tx_queue[queue_index]);
 614 }
 615
 616 static uint32_t mv88w8618_eth_read(void *opaque, target_phys_addr_t offset)
 617 {
 618     mv88w8618_eth_state *s = opaque;
 619
 620     offset -= s->base;
 621     switch (offset) {
 622     case MP_ETH_SMIR:
 623         if (s->smir & MP_ETH_SMIR_OPCODE) {
 624             switch (s->smir & MP_ETH_SMIR_ADDR) {
 625             case MP_ETH_PHY1_BMSR:
 626                 return MP_PHY_BMSR_LINK | MP_PHY_BMSR_AUTONEG |
 627                        MP_ETH_SMIR_RDVALID;
 628             case MP_ETH_PHY1_PHYSID1:
 629                 return (MP_PHY_88E3015 >> 16) | MP_ETH_SMIR_RDVALID;
 630             case MP_ETH_PHY1_PHYSID2:
 631                 return (MP_PHY_88E3015 & 0xFFFF) | MP_ETH_SMIR_RDVALID;
 632             default:
 633                 return MP_ETH_SMIR_RDVALID;
 634             }
 635         }
 636         return 0;
 637
 638     case MP_ETH_ICR:
 639         return s->icr;
 640
 641     case MP_ETH_IMR:
 642         return s->imr;
 643
 644     case MP_ETH_FRDP0 ... MP_ETH_FRDP3:
 645         return host2target_addr(s->frx_queue[(offset - MP_ETH_FRDP0)/4]);
 646
 647     case MP_ETH_CRDP0 ... MP_ETH_CRDP3:
 648         return host2target_addr(s->rx_queue[(offset - MP_ETH_CRDP0)/4]);
 649
 650     case MP_ETH_CTDP0 ... MP_ETH_CTDP3:
 651         return host2target_addr(s->tx_queue[(offset - MP_ETH_CTDP0)/4]);
 652
 653     default:
 654         return 0;
 655     }
 656 }
 657
 658 static void mv88w8618_eth_write(void *opaque, target_phys_addr_t offset,
 659                                 uint32_t value)
 660 {
 661     mv88w8618_eth_state *s = opaque;
 662
 663     offset -= s->base;
 664     switch (offset) {
 665     case MP_ETH_SMIR:
 666         s->smir = value;
 667         break;
 668
 669     case MP_ETH_PCXR:
 670         s->vlan_header = ((value >> MP_ETH_PCXR_2BSM_BIT) & 1) * 2;
 671         break;
 672
 673     case MP_ETH_SDCMR:
 674         if (value & MP_ETH_CMD_TXHI)
 675             eth_send(s, 1);
 676         if (value & MP_ETH_CMD_TXLO)
 677             eth_send(s, 0);
 678         if (value & (MP_ETH_CMD_TXHI | MP_ETH_CMD_TXLO) && s->icr & s->imr)
 679             qemu_irq_raise(s->irq);
 680         break;
 681
 682     case MP_ETH_ICR:
 683         s->icr &= value;
 684         break;
 685
 686     case MP_ETH_IMR:
 687         s->imr = value;
 688         if (s->icr & s->imr)
 689             qemu_irq_raise(s->irq);
 690         break;
 691
 692     case MP_ETH_FRDP0 ... MP_ETH_FRDP3:
 693         s->frx_queue[(offset - MP_ETH_FRDP0)/4] = target2host_addr(value);
 694         break;
 695
 696     case MP_ETH_CRDP0 ... MP_ETH_CRDP3:
 697         s->rx_queue[(offset - MP_ETH_CRDP0)/4] =
 698             s->cur_rx[(offset - MP_ETH_CRDP0)/4] = target2host_addr(value);
 699         break;
 700
 701     case MP_ETH_CTDP0 ... MP_ETH_CTDP3:
 702         s->tx_queue[(offset - MP_ETH_CTDP0)/4] = target2host_addr(value);
 703         break;
 704     }
 705 }
 706
 707 static CPUReadMemoryFunc *mv88w8618_eth_readfn[] = {
 708     mv88w8618_eth_read,
 709     mv88w8618_eth_read,
 710     mv88w8618_eth_read
 711 };
 712
 713 static CPUWriteMemoryFunc *mv88w8618_eth_writefn[] = {
 714     mv88w8618_eth_write,
 715     mv88w8618_eth_write,
 716     mv88w8618_eth_write
 717 };
 718
 719 static void mv88w8618_eth_init(NICInfo *nd, uint32_t base, qemu_irq irq)
 720 {
 721     mv88w8618_eth_state *s;
 722     int iomemtype;
 723
 724     s = qemu_mallocz(sizeof(mv88w8618_eth_state));
 725     if (!s)
 726         return;
 727     s->base = base;
 728     s->irq = irq;
 729     s->vc = qemu_new_vlan_client(nd->vlan, eth_receive, eth_can_receive, s);
 730     iomemtype = cpu_register_io_memory(0, mv88w8618_eth_readfn,
 731                                        mv88w8618_eth_writefn, s);
 732     cpu_register_physical_memory(base, MP_ETH_SIZE, iomemtype);
 733 }
 734
 735 /* LCD register offsets */
 736 #define MP_LCD_IRQCTRL          0x180
 737 #define MP_LCD_IRQSTAT          0x184
 738 #define MP_LCD_SPICTRL          0x1ac
 739 #define MP_LCD_INST             0x1bc
 740 #define MP_LCD_DATA             0x1c0
 741
 742 /* Mode magics */
 743 #define MP_LCD_SPI_DATA         0x00100011
 744 #define MP_LCD_SPI_CMD          0x00104011
 745 #define MP_LCD_SPI_INVALID      0x00000000
 746
 747 /* Commmands */
 748 #define MP_LCD_INST_SETPAGE0    0xB0
 749 /* ... */
 750 #define MP_LCD_INST_SETPAGE7    0xB7
 751
 752 #define MP_LCD_TEXTCOLOR        0xe0e0ff /* RRGGBB */
 753
 754 typedef struct musicpal_lcd_state {
 755     uint32_t base;
 756     uint32_t mode;
 757     uint32_t irqctrl;
 758     int page;
 759     int page_off;
 760     DisplayState *ds;
 761     uint8_t video_ram[128*64/8];
 762     int invalidate;
 763 } musicpal_lcd_state;
 764
 765 static uint32_t lcd_brightness;
 766
 767 static uint8_t scale_lcd_color(uint8_t col)
 768 {
 769     int tmp = col;
 770
 771     switch (lcd_brightness) {
 772     case 0x00000007: /* 0 */
 773         return 0;
 774
 775     case 0x00020000: /* 1 */
 776         return (tmp * 1) / 7;
 777
 778     case 0x00020001: /* 2 */
 779         return (tmp * 2) / 7;
 780
 781     case 0x00040000: /* 3 */
 782         return (tmp * 3) / 7;
 783
 784     case 0x00010006: /* 4 */
 785         return (tmp * 4) / 7;
 786
 787     case 0x00020005: /* 5 */
 788         return (tmp * 5) / 7;
 789
 790     case 0x00040003: /* 6 */
 791         return (tmp * 6) / 7;
 792
 793     case 0x00030004: /* 7 */
 794     default:
 795         return col;
 796     }
 797 }
 798
 799 #define SET_LCD_PIXEL(depth, type) \
 800 static inline void glue(set_lcd_pixel, depth) \
 801         (musicpal_lcd_state *s, int x, int y, type col) \
 802 { \
 803     int dx, dy; \
 804     type *pixel = &((type *) s->ds->data)[(y * 128 * 3 + x) * 3]; \
 805 \
 806     for (dy = 0; dy < 3; dy++, pixel += 127 * 3) \
 807         for (dx = 0; dx < 3; dx++, pixel++) \
 808             *pixel = col; \
 809 }
 810 SET_LCD_PIXEL(8, uint8_t)
 811 SET_LCD_PIXEL(16, uint16_t)
 812 SET_LCD_PIXEL(32, uint32_t)
 813
 814 #include "pixel_ops.h"
 815
 816 static void lcd_refresh(void *opaque)
 817 {
 818     musicpal_lcd_state *s = opaque;
 819     int x, y, col;
 820
 821     if (s->invalidate && (s->ds->width != 128*3 || s->ds->height != 64*3)) {
 822         dpy_resize(s->ds, 128*3, 64*3);
 823         s->invalidate = 0;
 824     }
 825
 826     switch (s->ds->depth) {
 827     case 0:
 828         return;
 829 #define LCD_REFRESH(depth, func) \
 830     case depth: \
 831         col = func(scale_lcd_color((MP_LCD_TEXTCOLOR >> 16) & 0xff), \
 832                    scale_lcd_color((MP_LCD_TEXTCOLOR >> 8) & 0xff), \
 833                    scale_lcd_color(MP_LCD_TEXTCOLOR & 0xff)); \
 834         for (x = 0; x < 128; x++) \
 835             for (y = 0; y < 64; y++) \
 836                 if (s->video_ram[x + (y/8)*128] & (1 << (y % 8))) \
 837                     glue(set_lcd_pixel, depth)(s, x, y, col); \
 838                 else \
 839                     glue(set_lcd_pixel, depth)(s, x, y, 0); \
 840         break;
 841     LCD_REFRESH(8, rgb_to_pixel8)
 842     LCD_REFRESH(16, rgb_to_pixel16)
 843     LCD_REFRESH(32, (s->ds->bgr ? rgb_to_pixel32bgr : rgb_to_pixel32))
 844     default:
 845         cpu_abort(cpu_single_env, "unsupported colour depth %i\n",
 846                   s->ds->depth);
 847     }
 848
 849     dpy_update(s->ds, 0, 0, 128*3, 64*3);
 850 }
 851
 852 static void lcd_invalidate(void *opaque)
 853 {
 854     musicpal_lcd_state *s = opaque;
 855
 856     s->invalidate = 1;
 857 }
 858
 859 static uint32_t musicpal_lcd_read(void *opaque, target_phys_addr_t offset)
 860 {
 861     musicpal_lcd_state *s = opaque;
 862
 863     offset -= s->base;
 864     switch (offset) {
 865     case MP_LCD_IRQCTRL:
 866         return s->irqctrl;
 867
 868     default:
 869         return 0;
 870     }
 871 }
 872
 873 static void musicpal_lcd_write(void *opaque, target_phys_addr_t offset,
 874                                uint32_t value)
 875 {
 876     musicpal_lcd_state *s = opaque;
 877
 878     offset -= s->base;
 879     switch (offset) {
 880     case MP_LCD_IRQCTRL:
 881         s->irqctrl = value;
 882         break;
 883
 884     case MP_LCD_SPICTRL:
 885         if (value == MP_LCD_SPI_DATA || value == MP_LCD_SPI_CMD)
 886             s->mode = value;
 887         else
 888             s->mode = MP_LCD_SPI_INVALID;
 889         break;
 890
 891     case MP_LCD_INST:
 892         if (value >= MP_LCD_INST_SETPAGE0 && value <= MP_LCD_INST_SETPAGE7) {
 893             s->page = value - MP_LCD_INST_SETPAGE0;
 894             s->page_off = 0;
 895         }
 896         break;
 897
 898     case MP_LCD_DATA:
 899         if (s->mode == MP_LCD_SPI_CMD) {
 900             if (value >= MP_LCD_INST_SETPAGE0 &&
 901                 value <= MP_LCD_INST_SETPAGE7) {
 902                 s->page = value - MP_LCD_INST_SETPAGE0;
 903                 s->page_off = 0;
 904             }
 905         } else if (s->mode == MP_LCD_SPI_DATA) {
 906             s->video_ram[s->page*128 + s->page_off] = value;
 907             s->page_off = (s->page_off + 1) & 127;
 908         }
 909         break;
 910     }
 911 }
 912
 913 static CPUReadMemoryFunc *musicpal_lcd_readfn[] = {
 914     musicpal_lcd_read,
 915     musicpal_lcd_read,
 916     musicpal_lcd_read
 917 };
 918
 919 static CPUWriteMemoryFunc *musicpal_lcd_writefn[] = {
 920     musicpal_lcd_write,
 921     musicpal_lcd_write,
 922     musicpal_lcd_write
 923 };
 924
 925 static void musicpal_lcd_init(DisplayState *ds, uint32_t base)
 926 {
 927     musicpal_lcd_state *s;
 928     int iomemtype;
 929
 930     s = qemu_mallocz(sizeof(musicpal_lcd_state));
 931     if (!s)
 932         return;
 933     s->base = base;
 934     s->ds = ds;
 935     s->invalidate = 1;
 936     iomemtype = cpu_register_io_memory(0, musicpal_lcd_readfn,
 937                                        musicpal_lcd_writefn, s);
 938     cpu_register_physical_memory(base, MP_LCD_SIZE, iomemtype);
 939
 940     graphic_console_init(ds, lcd_refresh, lcd_invalidate, NULL, NULL, s);
 941 }
 942
 943 /* PIC register offsets */
 944 #define MP_PIC_STATUS           0x00
 945 #define MP_PIC_ENABLE_SET       0x08
 946 #define MP_PIC_ENABLE_CLR       0x0C
 947
 948 typedef struct mv88w8618_pic_state
 949 {
 950     uint32_t base;
 951     uint32_t level;
 952     uint32_t enabled;
 953     qemu_irq parent_irq;
 954 } mv88w8618_pic_state;
 955
 956 static void mv88w8618_pic_update(mv88w8618_pic_state *s)
 957 {
 958     qemu_set_irq(s->parent_irq, (s->level & s->enabled));
 959 }
 960
 961 static void mv88w8618_pic_set_irq(void *opaque, int irq, int level)
 962 {
 963     mv88w8618_pic_state *s = opaque;
 964
 965     if (level)
 966         s->level |= 1 << irq;
 967     else
 968         s->level &= ~(1 << irq);
 969     mv88w8618_pic_update(s);
 970 }
 971
 972 static uint32_t mv88w8618_pic_read(void *opaque, target_phys_addr_t offset)
 973 {
 974     mv88w8618_pic_state *s = opaque;
 975
 976     offset -= s->base;
 977     switch (offset) {
 978     case MP_PIC_STATUS:
 979         return s->level & s->enabled;
 980
 981     default:
 982         return 0;
 983     }
 984 }
 985
 986 static void mv88w8618_pic_write(void *opaque, target_phys_addr_t offset,
 987                                 uint32_t value)
 988 {
 989     mv88w8618_pic_state *s = opaque;
 990
 991     offset -= s->base;
 992     switch (offset) {
 993     case MP_PIC_ENABLE_SET:
 994         s->enabled |= value;
 995         break;
 996
 997     case MP_PIC_ENABLE_CLR:
 998         s->enabled &= ~value;
 999         s->level &= ~value;
1000         break;
1001     }
1002     mv88w8618_pic_update(s);
1003 }
1004
1005 static void mv88w8618_pic_reset(void *opaque)
1006 {
1007     mv88w8618_pic_state *s = opaque;
1008
1009     s->level = 0;
1010     s->enabled = 0;
1011 }
1012
1013 static CPUReadMemoryFunc *mv88w8618_pic_readfn[] = {
1014     mv88w8618_pic_read,
1015     mv88w8618_pic_read,
1016     mv88w8618_pic_read
1017 };
1018
1019 static CPUWriteMemoryFunc *mv88w8618_pic_writefn[] = {
1020     mv88w8618_pic_write,
1021     mv88w8618_pic_write,
1022     mv88w8618_pic_write
1023 };
1024
1025 static qemu_irq *mv88w8618_pic_init(uint32_t base, qemu_irq parent_irq)
1026 {
1027     mv88w8618_pic_state *s;
1028     int iomemtype;
1029     qemu_irq *qi;
1030
1031     s = qemu_mallocz(sizeof(mv88w8618_pic_state));
1032     if (!s)
1033         return NULL;
1034     qi = qemu_allocate_irqs(mv88w8618_pic_set_irq, s, 32);
1035     s->base = base;
1036     s->parent_irq = parent_irq;
1037     iomemtype = cpu_register_io_memory(0, mv88w8618_pic_readfn,
1038                                        mv88w8618_pic_writefn, s);
1039     cpu_register_physical_memory(base, MP_PIC_SIZE, iomemtype);
1040
1041     qemu_register_reset(mv88w8618_pic_reset, s);
1042
1043     return qi;
1044 }
1045
1046 /* PIT register offsets */
1047 #define MP_PIT_TIMER1_LENGTH    0x00
1048 /* ... */
1049 #define MP_PIT_TIMER4_LENGTH    0x0C
1050 #define MP_PIT_CONTROL          0x10
1051 #define MP_PIT_TIMER1_VALUE     0x14
1052 /* ... */
1053 #define MP_PIT_TIMER4_VALUE     0x20
1054 #define MP_BOARD_RESET          0x34
1055
1056 /* Magic board reset value (probably some watchdog behind it) */
1057 #define MP_BOARD_RESET_MAGIC    0x10000
1058
1059 typedef struct mv88w8618_timer_state {
1060     ptimer_state *timer;
1061     uint32_t limit;
1062     int freq;
1063     qemu_irq irq;
1064 } mv88w8618_timer_state;
1065
1066 typedef struct mv88w8618_pit_state {
1067     void *timer[4];
1068     uint32_t control;
1069     uint32_t base;
1070 } mv88w8618_pit_state;
1071
1072 static void mv88w8618_timer_tick(void *opaque)
1073 {
1074     mv88w8618_timer_state *s = opaque;
1075
1076     qemu_irq_raise(s->irq);
1077 }
1078
1079 static void *mv88w8618_timer_init(uint32_t freq, qemu_irq irq)
1080 {
1081     mv88w8618_timer_state *s;
1082     QEMUBH *bh;
1083
1084     s = qemu_mallocz(sizeof(mv88w8618_timer_state));
1085     s->irq = irq;
1086     s->freq = freq;
1087
1088     bh = qemu_bh_new(mv88w8618_timer_tick, s);
1089     s->timer = ptimer_init(bh);
1090
1091     return s;
1092 }
1093
1094 static uint32_t mv88w8618_pit_read(void *opaque, target_phys_addr_t offset)
1095 {
1096     mv88w8618_pit_state *s = opaque;
1097     mv88w8618_timer_state *t;
1098
1099     offset -= s->base;
1100     switch (offset) {
1101     case MP_PIT_TIMER1_VALUE ... MP_PIT_TIMER4_VALUE:
1102         t = s->timer[(offset-MP_PIT_TIMER1_VALUE) >> 2];
1103         return ptimer_get_count(t->timer);
1104
1105     default:
1106         return 0;
1107     }
1108 }
1109
1110 static void mv88w8618_pit_write(void *opaque, target_phys_addr_t offset,
1111                                 uint32_t value)
1112 {
1113     mv88w8618_pit_state *s = opaque;
1114     mv88w8618_timer_state *t;
1115     int i;
1116
1117     offset -= s->base;
1118     switch (offset) {
1119     case MP_PIT_TIMER1_LENGTH ... MP_PIT_TIMER4_LENGTH:
1120         t = s->timer[offset >> 2];
1121         t->limit = value;
1122         ptimer_set_limit(t->timer, t->limit, 1);
1123         break;
1124
1125     case MP_PIT_CONTROL:
1126         for (i = 0; i < 4; i++) {
1127             if (value & 0xf) {
1128                 t = s->timer[i];
1129                 ptimer_set_limit(t->timer, t->limit, 0);
1130                 ptimer_set_freq(t->timer, t->freq);
1131                 ptimer_run(t->timer, 0);
1132             }
1133             value >>= 4;
1134         }
1135         break;
1136
1137     case MP_BOARD_RESET:
1138         if (value == MP_BOARD_RESET_MAGIC)
1139             qemu_system_reset_request();
1140         break;
1141     }
1142 }
1143
1144 static CPUReadMemoryFunc *mv88w8618_pit_readfn[] = {
1145     mv88w8618_pit_read,
1146     mv88w8618_pit_read,
1147     mv88w8618_pit_read
1148 };
1149
1150 static CPUWriteMemoryFunc *mv88w8618_pit_writefn[] = {
1151     mv88w8618_pit_write,
1152     mv88w8618_pit_write,
1153     mv88w8618_pit_write
1154 };
1155
1156 static void mv88w8618_pit_init(uint32_t base, qemu_irq *pic, int irq)
1157 {
1158     int iomemtype;
1159     mv88w8618_pit_state *s;
1160
1161     s = qemu_mallocz(sizeof(mv88w8618_pit_state));
1162     if (!s)
1163         return;
1164
1165     s->base = base;
1166     /* Letting them all run at 1 MHz is likely just a pragmatic
1167      * simplification. */
1168     s->timer[0] = mv88w8618_timer_init(1000000, pic[irq]);
1169     s->timer[1] = mv88w8618_timer_init(1000000, pic[irq + 1]);
1170     s->timer[2] = mv88w8618_timer_init(1000000, pic[irq + 2]);
1171     s->timer[3] = mv88w8618_timer_init(1000000, pic[irq + 3]);
1172
1173     iomemtype = cpu_register_io_memory(0, mv88w8618_pit_readfn,
1174                                        mv88w8618_pit_writefn, s);
1175     cpu_register_physical_memory(base, MP_PIT_SIZE, iomemtype);
1176 }
1177
1178 /* Flash config register offsets */
1179 #define MP_FLASHCFG_CFGR0    0x04
1180
1181 typedef struct mv88w8618_flashcfg_state {
1182     uint32_t base;
1183     uint32_t cfgr0;
1184 } mv88w8618_flashcfg_state;
1185
1186 static uint32_t mv88w8618_flashcfg_read(void *opaque,
1187                                         target_phys_addr_t offset)
1188 {
1189     mv88w8618_flashcfg_state *s = opaque;
1190
1191     offset -= s->base;
1192     switch (offset) {
1193     case MP_FLASHCFG_CFGR0:
1194         return s->cfgr0;
1195
1196     default:
1197         return 0;
1198     }
1199 }
1200
1201 static void mv88w8618_flashcfg_write(void *opaque, target_phys_addr_t offset,
1202                                      uint32_t value)
1203 {
1204     mv88w8618_flashcfg_state *s = opaque;
1205
1206     offset -= s->base;
1207     switch (offset) {
1208     case MP_FLASHCFG_CFGR0:
1209         s->cfgr0 = value;
1210         break;
1211     }
1212 }
1213
1214 static CPUReadMemoryFunc *mv88w8618_flashcfg_readfn[] = {
1215     mv88w8618_flashcfg_read,
1216     mv88w8618_flashcfg_read,
1217     mv88w8618_flashcfg_read
1218 };
1219
1220 static CPUWriteMemoryFunc *mv88w8618_flashcfg_writefn[] = {
1221     mv88w8618_flashcfg_write,
1222     mv88w8618_flashcfg_write,
1223     mv88w8618_flashcfg_write
1224 };
1225
1226 static void mv88w8618_flashcfg_init(uint32_t base)
1227 {
1228     int iomemtype;
1229     mv88w8618_flashcfg_state *s;
1230
1231     s = qemu_mallocz(sizeof(mv88w8618_flashcfg_state));
1232     if (!s)
1233         return;
1234
1235     s->base = base;
1236     s->cfgr0 = 0xfffe4285; /* Default as set by U-Boot for 8 MB flash */
1237     iomemtype = cpu_register_io_memory(0, mv88w8618_flashcfg_readfn,
1238                        mv88w8618_flashcfg_writefn, s);
1239     cpu_register_physical_memory(base, MP_FLASHCFG_SIZE, iomemtype);
1240 }
1241
1242 /* Various registers in the 0x80000000 domain */
1243 #define MP_BOARD_REVISION       0x2018
1244
1245 #define MP_WLAN_MAGIC1          0xc11c
1246 #define MP_WLAN_MAGIC2          0xc124
1247
1248 #define MP_GPIO_OE_LO           0xd008
1249 #define MP_GPIO_OUT_LO          0xd00c
1250 #define MP_GPIO_IN_LO           0xd010
1251 #define MP_GPIO_ISR_LO          0xd020
1252 #define MP_GPIO_OE_HI           0xd508
1253 #define MP_GPIO_OUT_HI          0xd50c
1254 #define MP_GPIO_IN_HI           0xd510
1255 #define MP_GPIO_ISR_HI          0xd520
1256
1257 /* GPIO bits & masks */
1258 #define MP_GPIO_WHEEL_VOL       (1 << 8)
1259 #define MP_GPIO_WHEEL_VOL_INV   (1 << 9)
1260 #define MP_GPIO_WHEEL_NAV       (1 << 10)
1261 #define MP_GPIO_WHEEL_NAV_INV   (1 << 11)
1262 #define MP_GPIO_LCD_BRIGHTNESS  0x00070000
1263 #define MP_GPIO_BTN_FAVORITS    (1 << 19)
1264 #define MP_GPIO_BTN_MENU        (1 << 20)
1265 #define MP_GPIO_BTN_VOLUME      (1 << 21)
1266 #define MP_GPIO_BTN_NAVIGATION  (1 << 22)
1267 #define MP_GPIO_I2C_DATA_BIT    29
1268 #define MP_GPIO_I2C_DATA        (1 << MP_GPIO_I2C_DATA_BIT)
1269 #define MP_GPIO_I2C_CLOCK_BIT   30
1270
1271 /* LCD brightness bits in GPIO_OE_HI */
1272 #define MP_OE_LCD_BRIGHTNESS    0x0007
1273
1274 static uint32_t musicpal_read(void *opaque, target_phys_addr_t offset)
1275 {
1276     offset -= 0x80000000;
1277     switch (offset) {
1278     case MP_BOARD_REVISION:
1279         return 0x0031;
1280
1281     case MP_GPIO_OE_HI: /* used for LCD brightness control */
1282         return lcd_brightness & MP_OE_LCD_BRIGHTNESS;
1283
1284     case MP_GPIO_OUT_LO:
1285         return gpio_out_state & 0xFFFF;
1286     case MP_GPIO_OUT_HI:
1287         return gpio_out_state >> 16;
1288
1289     case MP_GPIO_IN_LO:
1290         return gpio_in_state & 0xFFFF;
1291     case MP_GPIO_IN_HI:
1292         /* Update received I2C data */
1293         gpio_in_state = (gpio_in_state & ~MP_GPIO_I2C_DATA) |
1294                         (i2c_get_data(mixer_i2c) << MP_GPIO_I2C_DATA_BIT);
1295         return gpio_in_state >> 16;
1296
1297     case MP_GPIO_ISR_LO:
1298         return gpio_isr & 0xFFFF;
1299     case MP_GPIO_ISR_HI:
1300         return gpio_isr >> 16;
1301
1302     /* Workaround to allow loading the binary-only wlandrv.ko crap
1303      * from the original Freecom firmware. */
1304     case MP_WLAN_MAGIC1:
1305         return ~3;
1306     case MP_WLAN_MAGIC2:
1307         return -1;
1308
1309     default:
1310         return 0;
1311     }
1312 }
1313
1314 static void musicpal_write(void *opaque, target_phys_addr_t offset,
1315                            uint32_t value)
1316 {
1317     offset -= 0x80000000;
1318     switch (offset) {
1319     case MP_GPIO_OE_HI: /* used for LCD brightness control */
1320         lcd_brightness = (lcd_brightness & MP_GPIO_LCD_BRIGHTNESS) |
1321                          (value & MP_OE_LCD_BRIGHTNESS);
1322         break;
1323
1324     case MP_GPIO_OUT_LO:
1325         gpio_out_state = (gpio_out_state & 0xFFFF0000) | (value & 0xFFFF);
1326         break;
1327     case MP_GPIO_OUT_HI:
1328         gpio_out_state = (gpio_out_state & 0xFFFF) | (value << 16);
1329         lcd_brightness = (lcd_brightness & 0xFFFF) |
1330                          (gpio_out_state & MP_GPIO_LCD_BRIGHTNESS);
1331         i2c_state_update(mixer_i2c,
1332                          (gpio_out_state >> MP_GPIO_I2C_DATA_BIT) & 1,
1333                          (gpio_out_state >> MP_GPIO_I2C_CLOCK_BIT) & 1);
1334         break;
1335
1336     }
1337 }
1338
1339 /* Keyboard codes & masks */
1340 #define KEY_RELEASED            0x80
1341 #define KEY_CODE                0x7f
1342
1343 #define KEYCODE_TAB             0x0f
1344 #define KEYCODE_ENTER           0x1c
1345 #define KEYCODE_F               0x21
1346 #define KEYCODE_M               0x32
1347
1348 #define KEYCODE_EXTENDED        0xe0
1349 #define KEYCODE_UP              0x48
1350 #define KEYCODE_DOWN            0x50
1351 #define KEYCODE_LEFT            0x4b
1352 #define KEYCODE_RIGHT           0x4d
1353
1354 static void musicpal_key_event(void *opaque, int keycode)
1355 {
1356     qemu_irq irq = opaque;
1357     uint32_t event = 0;
1358     static int kbd_extended;
1359
1360     if (keycode == KEYCODE_EXTENDED) {
1361         kbd_extended = 1;
1362         return;
1363     }
1364
1365     if (kbd_extended)
1366         switch (keycode & KEY_CODE) {
1367         case KEYCODE_UP:
1368             event = MP_GPIO_WHEEL_NAV | MP_GPIO_WHEEL_NAV_INV;
1369             break;
1370
1371         case KEYCODE_DOWN:
1372             event = MP_GPIO_WHEEL_NAV;
1373             break;
1374
1375         case KEYCODE_LEFT:
1376             event = MP_GPIO_WHEEL_VOL | MP_GPIO_WHEEL_VOL_INV;
1377             break;
1378
1379         case KEYCODE_RIGHT:
1380             event = MP_GPIO_WHEEL_VOL;
1381             break;
1382         }
1383     else {
1384         switch (keycode & KEY_CODE) {
1385         case KEYCODE_F:
1386             event = MP_GPIO_BTN_FAVORITS;
1387             break;
1388
1389         case KEYCODE_TAB:
1390             event = MP_GPIO_BTN_VOLUME;
1391             break;
1392
1393         case KEYCODE_ENTER:
1394             event = MP_GPIO_BTN_NAVIGATION;
1395             break;
1396
1397         case KEYCODE_M:
1398             event = MP_GPIO_BTN_MENU;
1399             break;
1400         }
1401         /* Do not repeat already pressed buttons */
1402         if (!(keycode & KEY_RELEASED) && !(gpio_in_state & event))
1403             event = 0;
1404     }
1405
1406     if (event) {
1407         if (keycode & KEY_RELEASED) {
1408             gpio_in_state |= event;
1409         } else {
1410             gpio_in_state &= ~event;
1411             gpio_isr = event;
1412             qemu_irq_raise(irq);
1413         }
1414     }
1415
1416     kbd_extended = 0;
1417 }
1418
1419 static CPUReadMemoryFunc *musicpal_readfn[] = {
1420     musicpal_read,
1421     musicpal_read,
1422     musicpal_read,
1423 };
1424
1425 static CPUWriteMemoryFunc *musicpal_writefn[] = {
1426     musicpal_write,
1427     musicpal_write,
1428     musicpal_write,
1429 };
1430
1431 static struct arm_boot_info musicpal_binfo = {
1432     .loader_start = 0x0,
1433     .board_id = 0x20e,
1434 };
1435
1436 static void musicpal_init(ram_addr_t ram_size, int vga_ram_size,
1437                const char *boot_device, DisplayState *ds,
1438                const char *kernel_filename, const char *kernel_cmdline,
1439                const char *initrd_filename, const char *cpu_model)
1440 {
1441     CPUState *env;
1442     qemu_irq *pic;
1443     int index;
1444     int iomemtype;
1445     unsigned long flash_size;
1446
1447     if (!cpu_model)
1448         cpu_model = "arm926";
1449
1450     env = cpu_init(cpu_model);
1451     if (!env) {
1452         fprintf(stderr, "Unable to find CPU definition\n");
1453         exit(1);
1454     }
1455     pic = arm_pic_init_cpu(env);
1456
1457     /* For now we use a fixed - the original - RAM size */
1458     cpu_register_physical_memory(0, MP_RAM_DEFAULT_SIZE,
1459                                  qemu_ram_alloc(MP_RAM_DEFAULT_SIZE));
1460
1461     sram_off = qemu_ram_alloc(MP_SRAM_SIZE);
1462     cpu_register_physical_memory(MP_SRAM_BASE, MP_SRAM_SIZE, sram_off);
1463
1464     /* Catch various stuff not handled by separate subsystems */
1465     iomemtype = cpu_register_io_memory(0, musicpal_readfn,
1466                                        musicpal_writefn, env);
1467     cpu_register_physical_memory(0x80000000, 0x10000, iomemtype);
1468
1469     pic = mv88w8618_pic_init(MP_PIC_BASE, pic[ARM_PIC_CPU_IRQ]);
1470     mv88w8618_pit_init(MP_PIT_BASE, pic, MP_TIMER1_IRQ);
1471
1472     if (serial_hds[0])
1473         serial_mm_init(MP_UART1_BASE, 2, pic[MP_UART1_IRQ], 1825000,
1474                    serial_hds[0], 1);
1475     if (serial_hds[1])
1476         serial_mm_init(MP_UART2_BASE, 2, pic[MP_UART2_IRQ], 1825000,
1477                    serial_hds[1], 1);
1478
1479     /* Register flash */
1480     index = drive_get_index(IF_PFLASH, 0, 0);
1481     if (index != -1) {
1482         flash_size = bdrv_getlength(drives_table[index].bdrv);
1483         if (flash_size != 8*1024*1024 && flash_size != 16*1024*1024 &&
1484             flash_size != 32*1024*1024) {
1485             fprintf(stderr, "Invalid flash image size\n");
1486             exit(1);
1487         }
1488
1489         /*
1490          * The original U-Boot accesses the flash at 0xFE000000 instead of
1491          * 0xFF800000 (if there is 8 MB flash). So remap flash access if the
1492          * image is smaller than 32 MB.
1493          */
1494         pflash_cfi02_register(0-MP_FLASH_SIZE_MAX, qemu_ram_alloc(flash_size),
1495                               drives_table[index].bdrv, 0x10000,
1496                               (flash_size + 0xffff) >> 16,
1497                               MP_FLASH_SIZE_MAX / flash_size,
1498                               2, 0x00BF, 0x236D, 0x0000, 0x0000,
1499                               0x5555, 0x2AAA);
1500     }
1501     mv88w8618_flashcfg_init(MP_FLASHCFG_BASE);
1502
1503     musicpal_lcd_init(ds, MP_LCD_BASE);
1504
1505     qemu_add_kbd_event_handler(musicpal_key_event, pic[MP_GPIO_IRQ]);
1506
1507     mv88w8618_eth_init(&nd_table[0], MP_ETH_BASE, pic[MP_ETH_IRQ]);
1508
1509     mixer_i2c = musicpal_audio_init(MP_AUDIO_BASE, pic[MP_AUDIO_IRQ]);
1510
1511     musicpal_binfo.ram_size = MP_RAM_DEFAULT_SIZE;
1512     musicpal_binfo.kernel_filename = kernel_filename;
1513     musicpal_binfo.kernel_cmdline = kernel_cmdline;
1514     musicpal_binfo.initrd_filename = initrd_filename;
1515     arm_load_kernel(env, &musicpal_binfo);
1516 }
1517
1518 QEMUMachine musicpal_machine = {
1519     "musicpal",
1520     "Marvell 88w8618 / MusicPal (ARM926EJ-S)",
1521     musicpal_init,
1522     MP_RAM_DEFAULT_SIZE + MP_SRAM_SIZE + MP_FLASH_SIZE_MAX + RAMSIZE_FIXED
1523 };