hw/baum.c

   1 /*
   2  * QEMU Baum Braille Device
   3  *
   4  * Copyright (c) 2008 Samuel Thibault
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "qemu-common.h"
  25 #include "qemu-char.h"
  26 #include "qemu-timer.h"
  27 #include "usb.h"
  28 #include "baum.h"
  29 #include <brlapi.h>
  30 #include <brlapi_constants.h>
  31 #include <brlapi_keycodes.h>
  32 #ifdef CONFIG_SDL
  33 #include <SDL_syswm.h>
  34 #endif
  35
  36 #if 0
  37 #define DPRINTF(fmt, ...) \
  38         printf(fmt, ## __VA_ARGS__)
  39 #else
  40 #define DPRINTF(fmt, ...)
  41 #endif
  42
  43 #define ESC 0x1B
  44
  45 #define BAUM_REQ_DisplayData            0x01
  46 #define BAUM_REQ_GetVersionNumber       0x05
  47 #define BAUM_REQ_GetKeys                0x08
  48 #define BAUM_REQ_SetMode                0x12
  49 #define BAUM_REQ_SetProtocol            0x15
  50 #define BAUM_REQ_GetDeviceIdentity      0x84
  51 #define BAUM_REQ_GetSerialNumber        0x8A
  52
  53 #define BAUM_RSP_CellCount              0x01
  54 #define BAUM_RSP_VersionNumber          0x05
  55 #define BAUM_RSP_ModeSetting            0x11
  56 #define BAUM_RSP_CommunicationChannel   0x16
  57 #define BAUM_RSP_PowerdownSignal        0x17
  58 #define BAUM_RSP_HorizontalSensors      0x20
  59 #define BAUM_RSP_VerticalSensors        0x21
  60 #define BAUM_RSP_RoutingKeys            0x22
  61 #define BAUM_RSP_Switches               0x23
  62 #define BAUM_RSP_TopKeys                0x24
  63 #define BAUM_RSP_HorizontalSensor       0x25
  64 #define BAUM_RSP_VerticalSensor         0x26
  65 #define BAUM_RSP_RoutingKey             0x27
  66 #define BAUM_RSP_FrontKeys6             0x28
  67 #define BAUM_RSP_BackKeys6              0x29
  68 #define BAUM_RSP_CommandKeys            0x2B
  69 #define BAUM_RSP_FrontKeys10            0x2C
  70 #define BAUM_RSP_BackKeys10             0x2D
  71 #define BAUM_RSP_EntryKeys              0x33
  72 #define BAUM_RSP_JoyStick               0x34
  73 #define BAUM_RSP_ErrorCode              0x40
  74 #define BAUM_RSP_InfoBlock              0x42
  75 #define BAUM_RSP_DeviceIdentity         0x84
  76 #define BAUM_RSP_SerialNumber           0x8A
  77 #define BAUM_RSP_BluetoothName          0x8C
  78
  79 #define BAUM_TL1 0x01
  80 #define BAUM_TL2 0x02
  81 #define BAUM_TL3 0x04
  82 #define BAUM_TR1 0x08
  83 #define BAUM_TR2 0x10
  84 #define BAUM_TR3 0x20
  85
  86 #define BUF_SIZE 256
  87
  88 typedef struct {
  89     CharDriverState *chr;
  90
  91     brlapi_handle_t *brlapi;
  92     int brlapi_fd;
  93     unsigned int x, y;
  94
  95     uint8_t in_buf[BUF_SIZE];
  96     uint8_t in_buf_used;
  97     uint8_t out_buf[BUF_SIZE];
  98     uint8_t out_buf_used, out_buf_ptr;
  99
 100     QEMUTimer *cellCount_timer;
 101 } BaumDriverState;
 102
 103 /* Let's assume NABCC by default */
 104 static const uint8_t nabcc_translation[256] = {
 105     [0] = ' ',
 106 #ifndef BRLAPI_DOTS
 107 #define BRLAPI_DOTS(d1,d2,d3,d4,d5,d6,d7,d8) \
 108     ((d1?BRLAPI_DOT1:0)|\
 109      (d2?BRLAPI_DOT2:0)|\
 110      (d3?BRLAPI_DOT3:0)|\
 111      (d4?BRLAPI_DOT4:0)|\
 112      (d5?BRLAPI_DOT5:0)|\
 113      (d6?BRLAPI_DOT6:0)|\
 114      (d7?BRLAPI_DOT7:0)|\
 115      (d8?BRLAPI_DOT8:0))
 116 #endif
 117     [BRLAPI_DOTS(1,0,0,0,0,0,0,0)] = 'a',
 118     [BRLAPI_DOTS(1,1,0,0,0,0,0,0)] = 'b',
 119     [BRLAPI_DOTS(1,0,0,1,0,0,0,0)] = 'c',
 120     [BRLAPI_DOTS(1,0,0,1,1,0,0,0)] = 'd',
 121     [BRLAPI_DOTS(1,0,0,0,1,0,0,0)] = 'e',
 122     [BRLAPI_DOTS(1,1,0,1,0,0,0,0)] = 'f',
 123     [BRLAPI_DOTS(1,1,0,1,1,0,0,0)] = 'g',
 124     [BRLAPI_DOTS(1,1,0,0,1,0,0,0)] = 'h',
 125     [BRLAPI_DOTS(0,1,0,1,0,0,0,0)] = 'i',
 126     [BRLAPI_DOTS(0,1,0,1,1,0,0,0)] = 'j',
 127     [BRLAPI_DOTS(1,0,1,0,0,0,0,0)] = 'k',
 128     [BRLAPI_DOTS(1,1,1,0,0,0,0,0)] = 'l',
 129     [BRLAPI_DOTS(1,0,1,1,0,0,0,0)] = 'm',
 130     [BRLAPI_DOTS(1,0,1,1,1,0,0,0)] = 'n',
 131     [BRLAPI_DOTS(1,0,1,0,1,0,0,0)] = 'o',
 132     [BRLAPI_DOTS(1,1,1,1,0,0,0,0)] = 'p',
 133     [BRLAPI_DOTS(1,1,1,1,1,0,0,0)] = 'q',
 134     [BRLAPI_DOTS(1,1,1,0,1,0,0,0)] = 'r',
 135     [BRLAPI_DOTS(0,1,1,1,0,0,0,0)] = 's',
 136     [BRLAPI_DOTS(0,1,1,1,1,0,0,0)] = 't',
 137     [BRLAPI_DOTS(1,0,1,0,0,1,0,0)] = 'u',
 138     [BRLAPI_DOTS(1,1,1,0,0,1,0,0)] = 'v',
 139     [BRLAPI_DOTS(0,1,0,1,1,1,0,0)] = 'w',
 140     [BRLAPI_DOTS(1,0,1,1,0,1,0,0)] = 'x',
 141     [BRLAPI_DOTS(1,0,1,1,1,1,0,0)] = 'y',
 142     [BRLAPI_DOTS(1,0,1,0,1,1,0,0)] = 'z',
 143
 144     [BRLAPI_DOTS(1,0,0,0,0,0,1,0)] = 'A',
 145     [BRLAPI_DOTS(1,1,0,0,0,0,1,0)] = 'B',
 146     [BRLAPI_DOTS(1,0,0,1,0,0,1,0)] = 'C',
 147     [BRLAPI_DOTS(1,0,0,1,1,0,1,0)] = 'D',
 148     [BRLAPI_DOTS(1,0,0,0,1,0,1,0)] = 'E',
 149     [BRLAPI_DOTS(1,1,0,1,0,0,1,0)] = 'F',
 150     [BRLAPI_DOTS(1,1,0,1,1,0,1,0)] = 'G',
 151     [BRLAPI_DOTS(1,1,0,0,1,0,1,0)] = 'H',
 152     [BRLAPI_DOTS(0,1,0,1,0,0,1,0)] = 'I',
 153     [BRLAPI_DOTS(0,1,0,1,1,0,1,0)] = 'J',
 154     [BRLAPI_DOTS(1,0,1,0,0,0,1,0)] = 'K',
 155     [BRLAPI_DOTS(1,1,1,0,0,0,1,0)] = 'L',
 156     [BRLAPI_DOTS(1,0,1,1,0,0,1,0)] = 'M',
 157     [BRLAPI_DOTS(1,0,1,1,1,0,1,0)] = 'N',
 158     [BRLAPI_DOTS(1,0,1,0,1,0,1,0)] = 'O',
 159     [BRLAPI_DOTS(1,1,1,1,0,0,1,0)] = 'P',
 160     [BRLAPI_DOTS(1,1,1,1,1,0,1,0)] = 'Q',
 161     [BRLAPI_DOTS(1,1,1,0,1,0,1,0)] = 'R',
 162     [BRLAPI_DOTS(0,1,1,1,0,0,1,0)] = 'S',
 163     [BRLAPI_DOTS(0,1,1,1,1,0,1,0)] = 'T',
 164     [BRLAPI_DOTS(1,0,1,0,0,1,1,0)] = 'U',
 165     [BRLAPI_DOTS(1,1,1,0,0,1,1,0)] = 'V',
 166     [BRLAPI_DOTS(0,1,0,1,1,1,1,0)] = 'W',
 167     [BRLAPI_DOTS(1,0,1,1,0,1,1,0)] = 'X',
 168     [BRLAPI_DOTS(1,0,1,1,1,1,1,0)] = 'Y',
 169     [BRLAPI_DOTS(1,0,1,0,1,1,1,0)] = 'Z',
 170
 171     [BRLAPI_DOTS(0,0,1,0,1,1,0,0)] = '0',
 172     [BRLAPI_DOTS(0,1,0,0,0,0,0,0)] = '1',
 173     [BRLAPI_DOTS(0,1,1,0,0,0,0,0)] = '2',
 174     [BRLAPI_DOTS(0,1,0,0,1,0,0,0)] = '3',
 175     [BRLAPI_DOTS(0,1,0,0,1,1,0,0)] = '4',
 176     [BRLAPI_DOTS(0,1,0,0,0,1,0,0)] = '5',
 177     [BRLAPI_DOTS(0,1,1,0,1,0,0,0)] = '6',
 178     [BRLAPI_DOTS(0,1,1,0,1,1,0,0)] = '7',
 179     [BRLAPI_DOTS(0,1,1,0,0,1,0,0)] = '8',
 180     [BRLAPI_DOTS(0,0,1,0,1,0,0,0)] = '9',
 181
 182     [BRLAPI_DOTS(0,0,0,1,0,1,0,0)] = '.',
 183     [BRLAPI_DOTS(0,0,1,1,0,1,0,0)] = '+',
 184     [BRLAPI_DOTS(0,0,1,0,0,1,0,0)] = '-',
 185     [BRLAPI_DOTS(1,0,0,0,0,1,0,0)] = '*',
 186     [BRLAPI_DOTS(0,0,1,1,0,0,0,0)] = '/',
 187     [BRLAPI_DOTS(1,1,1,0,1,1,0,0)] = '(',
 188     [BRLAPI_DOTS(0,1,1,1,1,1,0,0)] = ')',
 189
 190     [BRLAPI_DOTS(1,1,1,1,0,1,0,0)] = '&',
 191     [BRLAPI_DOTS(0,0,1,1,1,1,0,0)] = '#',
 192
 193     [BRLAPI_DOTS(0,0,0,0,0,1,0,0)] = ',',
 194     [BRLAPI_DOTS(0,0,0,0,1,1,0,0)] = ';',
 195     [BRLAPI_DOTS(1,0,0,0,1,1,0,0)] = ':',
 196     [BRLAPI_DOTS(0,1,1,1,0,1,0,0)] = '!',
 197     [BRLAPI_DOTS(1,0,0,1,1,1,0,0)] = '?',
 198     [BRLAPI_DOTS(0,0,0,0,1,0,0,0)] = '"',
 199     [BRLAPI_DOTS(0,0,1,0,0,0,0,0)] ='\'',
 200     [BRLAPI_DOTS(0,0,0,1,0,0,0,0)] = '`',
 201     [BRLAPI_DOTS(0,0,0,1,1,0,1,0)] = '^',
 202     [BRLAPI_DOTS(0,0,0,1,1,0,0,0)] = '~',
 203     [BRLAPI_DOTS(0,1,0,1,0,1,1,0)] = '[',
 204     [BRLAPI_DOTS(1,1,0,1,1,1,1,0)] = ']',
 205     [BRLAPI_DOTS(0,1,0,1,0,1,0,0)] = '{',
 206     [BRLAPI_DOTS(1,1,0,1,1,1,0,0)] = '}',
 207     [BRLAPI_DOTS(1,1,1,1,1,1,0,0)] = '=',
 208     [BRLAPI_DOTS(1,1,0,0,0,1,0,0)] = '<',
 209     [BRLAPI_DOTS(0,0,1,1,1,0,0,0)] = '>',
 210     [BRLAPI_DOTS(1,1,0,1,0,1,0,0)] = '$',
 211     [BRLAPI_DOTS(1,0,0,1,0,1,0,0)] = '%',
 212     [BRLAPI_DOTS(0,0,0,1,0,0,1,0)] = '@',
 213     [BRLAPI_DOTS(1,1,0,0,1,1,0,0)] = '|',
 214     [BRLAPI_DOTS(1,1,0,0,1,1,1,0)] ='\\',
 215     [BRLAPI_DOTS(0,0,0,1,1,1,0,0)] = '_',
 216 };
 217
 218 #if 0
 219 /* The serial port can receive more of our data */
 220 static void baum_accept_input(struct CharDriverState *chr)
 221 {
 222     BaumDriverState *baum = chr->opaque;
 223     int room, first;
 224
 225     if (!baum->out_buf_used)
 226         return;
 227     room = qemu_chr_be_can_write(chr);
 228     if (!room)
 229         return;
 230     if (room > baum->out_buf_used)
 231         room = baum->out_buf_used;
 232
 233     first = BUF_SIZE - baum->out_buf_ptr;
 234     if (room > first) {
 235         qemu_chr_be_write(chr, baum->out_buf + baum->out_buf_ptr, first);
 236         baum->out_buf_ptr = 0;
 237         baum->out_buf_used -= first;
 238         room -= first;
 239     }
 240     qemu_chr_be_write(chr, baum->out_buf + baum->out_buf_ptr, room);
 241     baum->out_buf_ptr += room;
 242     baum->out_buf_used -= room;
 243 }
 244 #endif
 245
 246 /* We want to send a packet */
 247 static void baum_write_packet(BaumDriverState *baum, const uint8_t *buf, int len)
 248 {
 249     uint8_t io_buf[1 + 2 * len], *cur = io_buf;
 250     int room;
 251     *cur++ = ESC;
 252     while (len--)
 253         if ((*cur++ = *buf++) == ESC)
 254             *cur++ = ESC;
 255     room = qemu_chr_be_can_write(baum->chr);
 256     len = cur - io_buf;
 257     if (len <= room) {
 258         /* Fits */
 259         qemu_chr_be_write(baum->chr, io_buf, len);
 260     } else {
 261         int first;
 262         uint8_t out;
 263         /* Can't fit all, send what can be, and store the rest. */
 264         qemu_chr_be_write(baum->chr, io_buf, room);
 265         len -= room;
 266         cur = io_buf + room;
 267         if (len > BUF_SIZE - baum->out_buf_used) {
 268             /* Can't even store it, drop the previous data... */
 269             assert(len <= BUF_SIZE);
 270             baum->out_buf_used = 0;
 271             baum->out_buf_ptr = 0;
 272         }
 273         out = baum->out_buf_ptr;
 274         baum->out_buf_used += len;
 275         first = BUF_SIZE - baum->out_buf_ptr;
 276         if (len > first) {
 277             memcpy(baum->out_buf + out, cur, first);
 278             out = 0;
 279             len -= first;
 280             cur += first;
 281         }
 282         memcpy(baum->out_buf + out, cur, len);
 283     }
 284 }
 285
 286 /* Called when the other end seems to have a wrong idea of our display size */
 287 static void baum_cellCount_timer_cb(void *opaque)
 288 {
 289     BaumDriverState *baum = opaque;
 290     uint8_t cell_count[] = { BAUM_RSP_CellCount, baum->x * baum->y };
 291     DPRINTF("Timeout waiting for DisplayData, sending cell count\n");
 292     baum_write_packet(baum, cell_count, sizeof(cell_count));
 293 }
 294
 295 /* Try to interpret a whole incoming packet */
 296 static int baum_eat_packet(BaumDriverState *baum, const uint8_t *buf, int len)
 297 {
 298     const uint8_t *cur = buf;
 299     uint8_t req = 0;
 300
 301     if (!len--)
 302         return 0;
 303     if (*cur++ != ESC) {
 304         while (*cur != ESC) {
 305             if (!len--)
 306                 return 0;
 307             cur++;
 308         }
 309         DPRINTF("Dropped %d bytes!\n", cur - buf);
 310     }
 311
 312 #define EAT(c) do {\
 313     if (!len--) \
 314         return 0; \
 315     if ((c = *cur++) == ESC) { \
 316         if (!len--) \
 317             return 0; \
 318         if (*cur++ != ESC) { \
 319             DPRINTF("Broken packet %#2x, tossing\n", req); \
 320                 if (qemu_timer_pending(baum->cellCount_timer)) { \
 321                 qemu_del_timer(baum->cellCount_timer); \
 322                 baum_cellCount_timer_cb(baum); \
 323             } \
 324             return (cur - 2 - buf); \
 325         } \
 326     } \
 327 } while (0)
 328
 329     EAT(req);
 330     switch (req) {
 331     case BAUM_REQ_DisplayData:
 332     {
 333         uint8_t cells[baum->x * baum->y], c;
 334         uint8_t text[baum->x * baum->y];
 335         uint8_t zero[baum->x * baum->y];
 336         int cursor = BRLAPI_CURSOR_OFF;
 337         int i;
 338
 339         /* Allow 100ms to complete the DisplayData packet */
 340         qemu_mod_timer(baum->cellCount_timer, qemu_get_clock_ns(vm_clock) +
 341                        get_ticks_per_sec() / 10);
 342         for (i = 0; i < baum->x * baum->y ; i++) {
 343             EAT(c);
 344             cells[i] = c;
 345             if ((c & (BRLAPI_DOT7|BRLAPI_DOT8))
 346                     == (BRLAPI_DOT7|BRLAPI_DOT8)) {
 347                 cursor = i + 1;
 348                 c &= ~(BRLAPI_DOT7|BRLAPI_DOT8);
 349             }
 350             if (!(c = nabcc_translation[c]))
 351                 c = '?';
 352             text[i] = c;
 353         }
 354         qemu_del_timer(baum->cellCount_timer);
 355
 356         memset(zero, 0, sizeof(zero));
 357
 358         brlapi_writeArguments_t wa = {
 359             .displayNumber = BRLAPI_DISPLAY_DEFAULT,
 360             .regionBegin = 1,
 361             .regionSize = baum->x * baum->y,
 362             .text = (char *)text,
 363             .textSize = baum->x * baum->y,
 364             .andMask = zero,
 365             .orMask = cells,
 366             .cursor = cursor,
 367             .charset = (char *)"ISO-8859-1",
 368         };
 369
 370         if (brlapi__write(baum->brlapi, &wa) == -1)
 371             brlapi_perror("baum brlapi_write");
 372         break;
 373     }
 374     case BAUM_REQ_SetMode:
 375     {
 376         uint8_t mode, setting;
 377         DPRINTF("SetMode\n");
 378         EAT(mode);
 379         EAT(setting);
 380         /* ignore */
 381         break;
 382     }
 383     case BAUM_REQ_SetProtocol:
 384     {
 385         uint8_t protocol;
 386         DPRINTF("SetProtocol\n");
 387         EAT(protocol);
 388         /* ignore */
 389         break;
 390     }
 391     case BAUM_REQ_GetDeviceIdentity:
 392     {
 393         uint8_t identity[17] = { BAUM_RSP_DeviceIdentity,
 394             'B','a','u','m',' ','V','a','r','i','o' };
 395         DPRINTF("GetDeviceIdentity\n");
 396         identity[11] = '0' + baum->x / 10;
 397         identity[12] = '0' + baum->x % 10;
 398         baum_write_packet(baum, identity, sizeof(identity));
 399         break;
 400     }
 401     case BAUM_REQ_GetVersionNumber:
 402     {
 403         uint8_t version[] = { BAUM_RSP_VersionNumber, 1 }; /* ? */
 404         DPRINTF("GetVersionNumber\n");
 405         baum_write_packet(baum, version, sizeof(version));
 406         break;
 407     }
 408     case BAUM_REQ_GetSerialNumber:
 409     {
 410         uint8_t serial[] = { BAUM_RSP_SerialNumber,
 411             '0','0','0','0','0','0','0','0' };
 412         DPRINTF("GetSerialNumber\n");
 413         baum_write_packet(baum, serial, sizeof(serial));
 414         break;
 415     }
 416     case BAUM_REQ_GetKeys:
 417     {
 418         DPRINTF("Get%0#2x\n", req);
 419         /* ignore */
 420         break;
 421     }
 422     default:
 423         DPRINTF("unrecognized request %0#2x\n", req);
 424         do
 425             if (!len--)
 426                 return 0;
 427         while (*cur++ != ESC);
 428         cur--;
 429         break;
 430     }
 431     return cur - buf;
 432 }
 433
 434 /* The other end is writing some data.  Store it and try to interpret */
 435 static int baum_write(CharDriverState *chr, const uint8_t *buf, int len)
 436 {
 437     BaumDriverState *baum = chr->opaque;
 438     int tocopy, cur, eaten, orig_len = len;
 439
 440     if (!len)
 441         return 0;
 442     if (!baum->brlapi)
 443         return len;
 444
 445     while (len) {
 446         /* Complete our buffer as much as possible */
 447         tocopy = len;
 448         if (tocopy > BUF_SIZE - baum->in_buf_used)
 449             tocopy = BUF_SIZE - baum->in_buf_used;
 450
 451         memcpy(baum->in_buf + baum->in_buf_used, buf, tocopy);
 452         baum->in_buf_used += tocopy;
 453         buf += tocopy;
 454         len -= tocopy;
 455
 456         /* Interpret it as much as possible */
 457         cur = 0;
 458         while (cur < baum->in_buf_used &&
 459                 (eaten = baum_eat_packet(baum, baum->in_buf + cur, baum->in_buf_used - cur)))
 460             cur += eaten;
 461
 462         /* Shift the remainder */
 463         if (cur) {
 464             memmove(baum->in_buf, baum->in_buf + cur, baum->in_buf_used - cur);
 465             baum->in_buf_used -= cur;
 466         }
 467
 468         /* And continue if any data left */
 469     }
 470     return orig_len;
 471 }
 472
 473 /* The other end sent us some event */
 474 static void baum_send_event(CharDriverState *chr, int event)
 475 {
 476     BaumDriverState *baum = chr->opaque;
 477     switch (event) {
 478     case CHR_EVENT_BREAK:
 479         break;
 480     case CHR_EVENT_OPENED:
 481         /* Reset state */
 482         baum->in_buf_used = 0;
 483         break;
 484     }
 485 }
 486
 487 /* Send the key code to the other end */
 488 static void baum_send_key(BaumDriverState *baum, uint8_t type, uint8_t value) {
 489     uint8_t packet[] = { type, value };
 490     DPRINTF("writing key %x %x\n", type, value);
 491     baum_write_packet(baum, packet, sizeof(packet));
 492 }
 493
 494 /* We got some data on the BrlAPI socket */
 495 static void baum_chr_read(void *opaque)
 496 {
 497     BaumDriverState *baum = opaque;
 498     brlapi_keyCode_t code;
 499     int ret;
 500     if (!baum->brlapi)
 501         return;
 502     while ((ret = brlapi__readKey(baum->brlapi, 0, &code)) == 1) {
 503         DPRINTF("got key %"BRLAPI_PRIxKEYCODE"\n", code);
 504         /* Emulate */
 505         switch (code & BRLAPI_KEY_TYPE_MASK) {
 506         case BRLAPI_KEY_TYPE_CMD:
 507             switch (code & BRLAPI_KEY_CMD_BLK_MASK) {
 508             case BRLAPI_KEY_CMD_ROUTE:
 509                 baum_send_key(baum, BAUM_RSP_RoutingKey, (code & BRLAPI_KEY_CMD_ARG_MASK)+1);
 510                 baum_send_key(baum, BAUM_RSP_RoutingKey, 0);
 511                 break;
 512             case 0:
 513                 switch (code & BRLAPI_KEY_CMD_ARG_MASK) {
 514                 case BRLAPI_KEY_CMD_FWINLT:
 515                     baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL2);
 516                     baum_send_key(baum, BAUM_RSP_TopKeys, 0);
 517                     break;
 518                 case BRLAPI_KEY_CMD_FWINRT:
 519                     baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TR2);
 520                     baum_send_key(baum, BAUM_RSP_TopKeys, 0);
 521                     break;
 522                 case BRLAPI_KEY_CMD_LNUP:
 523                     baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TR1);
 524                     baum_send_key(baum, BAUM_RSP_TopKeys, 0);
 525                     break;
 526                 case BRLAPI_KEY_CMD_LNDN:
 527                     baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TR3);
 528                     baum_send_key(baum, BAUM_RSP_TopKeys, 0);
 529                     break;
 530                 case BRLAPI_KEY_CMD_TOP:
 531                     baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL1|BAUM_TR1);
 532                     baum_send_key(baum, BAUM_RSP_TopKeys, 0);
 533                     break;
 534                 case BRLAPI_KEY_CMD_BOT:
 535                     baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL3|BAUM_TR3);
 536                     baum_send_key(baum, BAUM_RSP_TopKeys, 0);
 537                     break;
 538                 case BRLAPI_KEY_CMD_TOP_LEFT:
 539                     baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL2|BAUM_TR1);
 540                     baum_send_key(baum, BAUM_RSP_TopKeys, 0);
 541                     break;
 542                 case BRLAPI_KEY_CMD_BOT_LEFT:
 543                     baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL2|BAUM_TR3);
 544                     baum_send_key(baum, BAUM_RSP_TopKeys, 0);
 545                     break;
 546                 case BRLAPI_KEY_CMD_HOME:
 547                     baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL2|BAUM_TR1|BAUM_TR3);
 548                     baum_send_key(baum, BAUM_RSP_TopKeys, 0);
 549                     break;
 550                 case BRLAPI_KEY_CMD_PREFMENU:
 551                     baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL1|BAUM_TL3|BAUM_TR1);
 552                     baum_send_key(baum, BAUM_RSP_TopKeys, 0);
 553                     break;
 554                 }
 555             }
 556             break;
 557         case BRLAPI_KEY_TYPE_SYM:
 558             break;
 559         }
 560     }
 561     if (ret == -1 && (brlapi_errno != BRLAPI_ERROR_LIBCERR || errno != EINTR)) {
 562         brlapi_perror("baum: brlapi_readKey");
 563         brlapi__closeConnection(baum->brlapi);
 564         qemu_free(baum->brlapi);
 565         baum->brlapi = NULL;
 566     }
 567 }
 568
 569 static void baum_close(struct CharDriverState *chr)
 570 {
 571     BaumDriverState *baum = chr->opaque;
 572
 573     qemu_free_timer(baum->cellCount_timer);
 574     if (baum->brlapi) {
 575         brlapi__closeConnection(baum->brlapi);
 576         qemu_free(baum->brlapi);
 577     }
 578     qemu_free(baum);
 579 }
 580
 581 int chr_baum_init(QemuOpts *opts, CharDriverState **_chr)
 582 {
 583     BaumDriverState *baum;
 584     CharDriverState *chr;
 585     brlapi_handle_t *handle;
 586 #ifdef CONFIG_SDL
 587     SDL_SysWMinfo info;
 588 #endif
 589     int tty;
 590
 591     baum = qemu_mallocz(sizeof(BaumDriverState));
 592     baum->chr = chr = qemu_mallocz(sizeof(CharDriverState));
 593
 594     chr->opaque = baum;
 595     chr->chr_write = baum_write;
 596     chr->chr_send_event = baum_send_event;
 597     chr->chr_close = baum_close;
 598
 599     handle = qemu_mallocz(brlapi_getHandleSize());
 600     baum->brlapi = handle;
 601
 602     baum->brlapi_fd = brlapi__openConnection(handle, NULL, NULL);
 603     if (baum->brlapi_fd == -1) {
 604         brlapi_perror("baum_init: brlapi_openConnection");
 605         goto fail_handle;
 606     }
 607
 608     baum->cellCount_timer = qemu_new_timer_ns(vm_clock, baum_cellCount_timer_cb, baum);
 609
 610     if (brlapi__getDisplaySize(handle, &baum->x, &baum->y) == -1) {
 611         brlapi_perror("baum_init: brlapi_getDisplaySize");
 612         goto fail;
 613     }
 614
 615 #ifdef CONFIG_SDL
 616     memset(&info, 0, sizeof(info));
 617     SDL_VERSION(&info.version);
 618     if (SDL_GetWMInfo(&info))
 619         tty = info.info.x11.wmwindow;
 620     else
 621 #endif
 622         tty = BRLAPI_TTY_DEFAULT;
 623
 624     if (brlapi__enterTtyMode(handle, tty, NULL) == -1) {
 625         brlapi_perror("baum_init: brlapi_enterTtyMode");
 626         goto fail;
 627     }
 628
 629     qemu_set_fd_handler(baum->brlapi_fd, baum_chr_read, NULL, baum);
 630
 631     qemu_chr_generic_open(chr);
 632
 633     *_chr = chr;
 634     return 0;
 635
 636 fail:
 637     qemu_free_timer(baum->cellCount_timer);
 638     brlapi__closeConnection(handle);
 639 fail_handle:
 640     qemu_free(handle);
 641     qemu_free(chr);
 642     qemu_free(baum);
 643     return -EIO;
 644 }