char: move char devices to chardev/

Suggested by Paolo Bonzini during series review.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

1 files changed, 0 insertions, 677 deletions

diff --git a/backends/baum.c b/backends/baum.c
deleted file mode 100644
index 302dd96..0000000
--- a/backends/baum.c
+++ /dev/null
@@ -1,677 +0,0 @@
-/*
- * QEMU Baum Braille Device
- *
- * Copyright (c) 2008, 2010-2011, 2016 Samuel Thibault
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#include "qemu/osdep.h"
-#include "qapi/error.h"
-#include "qemu-common.h"
-#include "chardev/char.h"
-#include "qemu/timer.h"
-#include "hw/usb.h"
-#include "ui/console.h"
-#include <brlapi.h>
-#include <brlapi_constants.h>
-#include <brlapi_keycodes.h>
-
-#if 0
-#define DPRINTF(fmt, ...) \
-        printf(fmt, ## __VA_ARGS__)
-#else
-#define DPRINTF(fmt, ...)
-#endif
-
-#define ESC 0x1B
-
-#define BAUM_REQ_DisplayData		0x01
-#define BAUM_REQ_GetVersionNumber	0x05
-#define BAUM_REQ_GetKeys		0x08
-#define BAUM_REQ_SetMode		0x12
-#define BAUM_REQ_SetProtocol		0x15
-#define BAUM_REQ_GetDeviceIdentity	0x84
-#define BAUM_REQ_GetSerialNumber	0x8A
-
-#define BAUM_RSP_CellCount		0x01
-#define BAUM_RSP_VersionNumber		0x05
-#define BAUM_RSP_ModeSetting		0x11
-#define BAUM_RSP_CommunicationChannel	0x16
-#define BAUM_RSP_PowerdownSignal	0x17
-#define BAUM_RSP_HorizontalSensors	0x20
-#define BAUM_RSP_VerticalSensors	0x21
-#define BAUM_RSP_RoutingKeys		0x22
-#define BAUM_RSP_Switches		0x23
-#define BAUM_RSP_TopKeys		0x24
-#define BAUM_RSP_HorizontalSensor	0x25
-#define BAUM_RSP_VerticalSensor		0x26
-#define BAUM_RSP_RoutingKey		0x27
-#define BAUM_RSP_FrontKeys6		0x28
-#define BAUM_RSP_BackKeys6		0x29
-#define BAUM_RSP_CommandKeys		0x2B
-#define BAUM_RSP_FrontKeys10		0x2C
-#define BAUM_RSP_BackKeys10		0x2D
-#define BAUM_RSP_EntryKeys		0x33
-#define BAUM_RSP_JoyStick		0x34
-#define BAUM_RSP_ErrorCode		0x40
-#define BAUM_RSP_InfoBlock		0x42
-#define BAUM_RSP_DeviceIdentity		0x84
-#define BAUM_RSP_SerialNumber		0x8A
-#define BAUM_RSP_BluetoothName		0x8C
-
-#define BAUM_TL1 0x01
-#define BAUM_TL2 0x02
-#define BAUM_TL3 0x04
-#define BAUM_TR1 0x08
-#define BAUM_TR2 0x10
-#define BAUM_TR3 0x20
-
-#define BUF_SIZE 256
-
-typedef struct {
-    Chardev parent;
-
-    brlapi_handle_t *brlapi;
-    int brlapi_fd;
-    unsigned int x, y;
-    bool deferred_init;
-
-    uint8_t in_buf[BUF_SIZE];
-    uint8_t in_buf_used;
-    uint8_t out_buf[BUF_SIZE];
-    uint8_t out_buf_used, out_buf_ptr;
-
-    QEMUTimer *cellCount_timer;
-} BaumChardev;
-
-#define TYPE_CHARDEV_BRAILLE "chardev-braille"
-#define BAUM_CHARDEV(obj) OBJECT_CHECK(BaumChardev, (obj), TYPE_CHARDEV_BRAILLE)
-
-/* Let's assume NABCC by default */
-enum way {
-    DOTS2ASCII,
-    ASCII2DOTS
-};
-static const uint8_t nabcc_translation[2][256] = {
-#ifndef BRLAPI_DOTS
-#define BRLAPI_DOTS(d1,d2,d3,d4,d5,d6,d7,d8) \
-    ((d1?BRLAPI_DOT1:0)|\
-     (d2?BRLAPI_DOT2:0)|\
-     (d3?BRLAPI_DOT3:0)|\
-     (d4?BRLAPI_DOT4:0)|\
-     (d5?BRLAPI_DOT5:0)|\
-     (d6?BRLAPI_DOT6:0)|\
-     (d7?BRLAPI_DOT7:0)|\
-     (d8?BRLAPI_DOT8:0))
-#endif
-#define DO(dots, ascii) \
-    [DOTS2ASCII][dots] = ascii, \
-    [ASCII2DOTS][ascii] = dots
-    DO(0, ' '),
-    DO(BRLAPI_DOTS(1, 0, 0, 0, 0, 0, 0, 0), 'a'),
-    DO(BRLAPI_DOTS(1, 1, 0, 0, 0, 0, 0, 0), 'b'),
-    DO(BRLAPI_DOTS(1, 0, 0, 1, 0, 0, 0, 0), 'c'),
-    DO(BRLAPI_DOTS(1, 0, 0, 1, 1, 0, 0, 0), 'd'),
-    DO(BRLAPI_DOTS(1, 0, 0, 0, 1, 0, 0, 0), 'e'),
-    DO(BRLAPI_DOTS(1, 1, 0, 1, 0, 0, 0, 0), 'f'),
-    DO(BRLAPI_DOTS(1, 1, 0, 1, 1, 0, 0, 0), 'g'),
-    DO(BRLAPI_DOTS(1, 1, 0, 0, 1, 0, 0, 0), 'h'),
-    DO(BRLAPI_DOTS(0, 1, 0, 1, 0, 0, 0, 0), 'i'),
-    DO(BRLAPI_DOTS(0, 1, 0, 1, 1, 0, 0, 0), 'j'),
-    DO(BRLAPI_DOTS(1, 0, 1, 0, 0, 0, 0, 0), 'k'),
-    DO(BRLAPI_DOTS(1, 1, 1, 0, 0, 0, 0, 0), 'l'),
-    DO(BRLAPI_DOTS(1, 0, 1, 1, 0, 0, 0, 0), 'm'),
-    DO(BRLAPI_DOTS(1, 0, 1, 1, 1, 0, 0, 0), 'n'),
-    DO(BRLAPI_DOTS(1, 0, 1, 0, 1, 0, 0, 0), 'o'),
-    DO(BRLAPI_DOTS(1, 1, 1, 1, 0, 0, 0, 0), 'p'),
-    DO(BRLAPI_DOTS(1, 1, 1, 1, 1, 0, 0, 0), 'q'),
-    DO(BRLAPI_DOTS(1, 1, 1, 0, 1, 0, 0, 0), 'r'),
-    DO(BRLAPI_DOTS(0, 1, 1, 1, 0, 0, 0, 0), 's'),
-    DO(BRLAPI_DOTS(0, 1, 1, 1, 1, 0, 0, 0), 't'),
-    DO(BRLAPI_DOTS(1, 0, 1, 0, 0, 1, 0, 0), 'u'),
-    DO(BRLAPI_DOTS(1, 1, 1, 0, 0, 1, 0, 0), 'v'),
-    DO(BRLAPI_DOTS(0, 1, 0, 1, 1, 1, 0, 0), 'w'),
-    DO(BRLAPI_DOTS(1, 0, 1, 1, 0, 1, 0, 0), 'x'),
-    DO(BRLAPI_DOTS(1, 0, 1, 1, 1, 1, 0, 0), 'y'),
-    DO(BRLAPI_DOTS(1, 0, 1, 0, 1, 1, 0, 0), 'z'),
-
-    DO(BRLAPI_DOTS(1, 0, 0, 0, 0, 0, 1, 0), 'A'),
-    DO(BRLAPI_DOTS(1, 1, 0, 0, 0, 0, 1, 0), 'B'),
-    DO(BRLAPI_DOTS(1, 0, 0, 1, 0, 0, 1, 0), 'C'),
-    DO(BRLAPI_DOTS(1, 0, 0, 1, 1, 0, 1, 0), 'D'),
-    DO(BRLAPI_DOTS(1, 0, 0, 0, 1, 0, 1, 0), 'E'),
-    DO(BRLAPI_DOTS(1, 1, 0, 1, 0, 0, 1, 0), 'F'),
-    DO(BRLAPI_DOTS(1, 1, 0, 1, 1, 0, 1, 0), 'G'),
-    DO(BRLAPI_DOTS(1, 1, 0, 0, 1, 0, 1, 0), 'H'),
-    DO(BRLAPI_DOTS(0, 1, 0, 1, 0, 0, 1, 0), 'I'),
-    DO(BRLAPI_DOTS(0, 1, 0, 1, 1, 0, 1, 0), 'J'),
-    DO(BRLAPI_DOTS(1, 0, 1, 0, 0, 0, 1, 0), 'K'),
-    DO(BRLAPI_DOTS(1, 1, 1, 0, 0, 0, 1, 0), 'L'),
-    DO(BRLAPI_DOTS(1, 0, 1, 1, 0, 0, 1, 0), 'M'),
-    DO(BRLAPI_DOTS(1, 0, 1, 1, 1, 0, 1, 0), 'N'),
-    DO(BRLAPI_DOTS(1, 0, 1, 0, 1, 0, 1, 0), 'O'),
-    DO(BRLAPI_DOTS(1, 1, 1, 1, 0, 0, 1, 0), 'P'),
-    DO(BRLAPI_DOTS(1, 1, 1, 1, 1, 0, 1, 0), 'Q'),
-    DO(BRLAPI_DOTS(1, 1, 1, 0, 1, 0, 1, 0), 'R'),
-    DO(BRLAPI_DOTS(0, 1, 1, 1, 0, 0, 1, 0), 'S'),
-    DO(BRLAPI_DOTS(0, 1, 1, 1, 1, 0, 1, 0), 'T'),
-    DO(BRLAPI_DOTS(1, 0, 1, 0, 0, 1, 1, 0), 'U'),
-    DO(BRLAPI_DOTS(1, 1, 1, 0, 0, 1, 1, 0), 'V'),
-    DO(BRLAPI_DOTS(0, 1, 0, 1, 1, 1, 1, 0), 'W'),
-    DO(BRLAPI_DOTS(1, 0, 1, 1, 0, 1, 1, 0), 'X'),
-    DO(BRLAPI_DOTS(1, 0, 1, 1, 1, 1, 1, 0), 'Y'),
-    DO(BRLAPI_DOTS(1, 0, 1, 0, 1, 1, 1, 0), 'Z'),
-
-    DO(BRLAPI_DOTS(0, 0, 1, 0, 1, 1, 0, 0), '0'),
-    DO(BRLAPI_DOTS(0, 1, 0, 0, 0, 0, 0, 0), '1'),
-    DO(BRLAPI_DOTS(0, 1, 1, 0, 0, 0, 0, 0), '2'),
-    DO(BRLAPI_DOTS(0, 1, 0, 0, 1, 0, 0, 0), '3'),
-    DO(BRLAPI_DOTS(0, 1, 0, 0, 1, 1, 0, 0), '4'),
-    DO(BRLAPI_DOTS(0, 1, 0, 0, 0, 1, 0, 0), '5'),
-    DO(BRLAPI_DOTS(0, 1, 1, 0, 1, 0, 0, 0), '6'),
-    DO(BRLAPI_DOTS(0, 1, 1, 0, 1, 1, 0, 0), '7'),
-    DO(BRLAPI_DOTS(0, 1, 1, 0, 0, 1, 0, 0), '8'),
-    DO(BRLAPI_DOTS(0, 0, 1, 0, 1, 0, 0, 0), '9'),
-
-    DO(BRLAPI_DOTS(0, 0, 0, 1, 0, 1, 0, 0), '.'),
-    DO(BRLAPI_DOTS(0, 0, 1, 1, 0, 1, 0, 0), '+'),
-    DO(BRLAPI_DOTS(0, 0, 1, 0, 0, 1, 0, 0), '-'),
-    DO(BRLAPI_DOTS(1, 0, 0, 0, 0, 1, 0, 0), '*'),
-    DO(BRLAPI_DOTS(0, 0, 1, 1, 0, 0, 0, 0), '/'),
-    DO(BRLAPI_DOTS(1, 1, 1, 0, 1, 1, 0, 0), '('),
-    DO(BRLAPI_DOTS(0, 1, 1, 1, 1, 1, 0, 0), ')'),
-
-    DO(BRLAPI_DOTS(1, 1, 1, 1, 0, 1, 0, 0), '&'),
-    DO(BRLAPI_DOTS(0, 0, 1, 1, 1, 1, 0, 0), '#'),
-
-    DO(BRLAPI_DOTS(0, 0, 0, 0, 0, 1, 0, 0), ','),
-    DO(BRLAPI_DOTS(0, 0, 0, 0, 1, 1, 0, 0), ';'),
-    DO(BRLAPI_DOTS(1, 0, 0, 0, 1, 1, 0, 0), ':'),
-    DO(BRLAPI_DOTS(0, 1, 1, 1, 0, 1, 0, 0), '!'),
-    DO(BRLAPI_DOTS(1, 0, 0, 1, 1, 1, 0, 0), '?'),
-    DO(BRLAPI_DOTS(0, 0, 0, 0, 1, 0, 0, 0), '"'),
-    DO(BRLAPI_DOTS(0, 0, 1, 0, 0, 0, 0, 0), '\''),
-    DO(BRLAPI_DOTS(0, 0, 0, 1, 0, 0, 0, 0), '`'),
-    DO(BRLAPI_DOTS(0, 0, 0, 1, 1, 0, 1, 0), '^'),
-    DO(BRLAPI_DOTS(0, 0, 0, 1, 1, 0, 0, 0), '~'),
-    DO(BRLAPI_DOTS(0, 1, 0, 1, 0, 1, 1, 0), '['),
-    DO(BRLAPI_DOTS(1, 1, 0, 1, 1, 1, 1, 0), ']'),
-    DO(BRLAPI_DOTS(0, 1, 0, 1, 0, 1, 0, 0), '{'),
-    DO(BRLAPI_DOTS(1, 1, 0, 1, 1, 1, 0, 0), '}'),
-    DO(BRLAPI_DOTS(1, 1, 1, 1, 1, 1, 0, 0), '='),
-    DO(BRLAPI_DOTS(1, 1, 0, 0, 0, 1, 0, 0), '<'),
-    DO(BRLAPI_DOTS(0, 0, 1, 1, 1, 0, 0, 0), '>'),
-    DO(BRLAPI_DOTS(1, 1, 0, 1, 0, 1, 0, 0), '$'),
-    DO(BRLAPI_DOTS(1, 0, 0, 1, 0, 1, 0, 0), '%'),
-    DO(BRLAPI_DOTS(0, 0, 0, 1, 0, 0, 1, 0), '@'),
-    DO(BRLAPI_DOTS(1, 1, 0, 0, 1, 1, 0, 0), '|'),
-    DO(BRLAPI_DOTS(1, 1, 0, 0, 1, 1, 1, 0), '\\'),
-    DO(BRLAPI_DOTS(0, 0, 0, 1, 1, 1, 0, 0), '_'),
-};
-
-/* The guest OS has started discussing with us, finish initializing BrlAPI */
-static int baum_deferred_init(BaumChardev *baum)
-{
-    int tty = BRLAPI_TTY_DEFAULT;
-    QemuConsole *con;
-
-    if (baum->deferred_init) {
-        return 1;
-    }
-
-    if (brlapi__getDisplaySize(baum->brlapi, &baum->x, &baum->y) == -1) {
-        brlapi_perror("baum: brlapi__getDisplaySize");
-        return 0;
-    }
-
-    con = qemu_console_lookup_by_index(0);
-    if (con && qemu_console_is_graphic(con)) {
-        tty = qemu_console_get_window_id(con);
-        if (tty == -1)
-            tty = BRLAPI_TTY_DEFAULT;
-    }
-
-    if (brlapi__enterTtyMode(baum->brlapi, tty, NULL) == -1) {
-        brlapi_perror("baum: brlapi__enterTtyMode");
-        return 0;
-    }
-    baum->deferred_init = 1;
-    return 1;
-}
-
-/* The serial port can receive more of our data */
-static void baum_chr_accept_input(struct Chardev *chr)
-{
-    BaumChardev *baum = BAUM_CHARDEV(chr);
-    int room, first;
-
-    if (!baum->out_buf_used)
-        return;
-    room = qemu_chr_be_can_write(chr);
-    if (!room)
-        return;
-    if (room > baum->out_buf_used)
-        room = baum->out_buf_used;
-
-    first = BUF_SIZE - baum->out_buf_ptr;
-    if (room > first) {
-        qemu_chr_be_write(chr, baum->out_buf + baum->out_buf_ptr, first);
-        baum->out_buf_ptr = 0;
-        baum->out_buf_used -= first;
-        room -= first;
-    }
-    qemu_chr_be_write(chr, baum->out_buf + baum->out_buf_ptr, room);
-    baum->out_buf_ptr += room;
-    baum->out_buf_used -= room;
-}
-
-/* We want to send a packet */
-static void baum_write_packet(BaumChardev *baum, const uint8_t *buf, int len)
-{
-    Chardev *chr = CHARDEV(baum);
-    uint8_t io_buf[1 + 2 * len], *cur = io_buf;
-    int room;
-    *cur++ = ESC;
-    while (len--)
-        if ((*cur++ = *buf++) == ESC)
-            *cur++ = ESC;
-    room = qemu_chr_be_can_write(chr);
-    len = cur - io_buf;
-    if (len <= room) {
-        /* Fits */
-        qemu_chr_be_write(chr, io_buf, len);
-    } else {
-        int first;
-        uint8_t out;
-        /* Can't fit all, send what can be, and store the rest. */
-        qemu_chr_be_write(chr, io_buf, room);
-        len -= room;
-        cur = io_buf + room;
-        if (len > BUF_SIZE - baum->out_buf_used) {
-            /* Can't even store it, drop the previous data... */
-            assert(len <= BUF_SIZE);
-            baum->out_buf_used = 0;
-            baum->out_buf_ptr = 0;
-        }
-        out = baum->out_buf_ptr;
-        baum->out_buf_used += len;
-        first = BUF_SIZE - baum->out_buf_ptr;
-        if (len > first) {
-            memcpy(baum->out_buf + out, cur, first);
-            out = 0;
-            len -= first;
-            cur += first;
-        }
-        memcpy(baum->out_buf + out, cur, len);
-    }
-}
-
-/* Called when the other end seems to have a wrong idea of our display size */
-static void baum_cellCount_timer_cb(void *opaque)
-{
-    BaumChardev *baum = BAUM_CHARDEV(opaque);
-    uint8_t cell_count[] = { BAUM_RSP_CellCount, baum->x * baum->y };
-    DPRINTF("Timeout waiting for DisplayData, sending cell count\n");
-    baum_write_packet(baum, cell_count, sizeof(cell_count));
-}
-
-/* Try to interpret a whole incoming packet */
-static int baum_eat_packet(BaumChardev *baum, const uint8_t *buf, int len)
-{
-    const uint8_t *cur = buf;
-    uint8_t req = 0;
-
-    if (!len--)
-        return 0;
-    if (*cur++ != ESC) {
-        while (*cur != ESC) {
-            if (!len--)
-                return 0;
-            cur++;
-        }
-        DPRINTF("Dropped %td bytes!\n", cur - buf);
-    }
-
-#define EAT(c) do {\
-    if (!len--) \
-        return 0; \
-    if ((c = *cur++) == ESC) { \
-        if (!len--) \
-            return 0; \
-        if (*cur++ != ESC) { \
-            DPRINTF("Broken packet %#2x, tossing\n", req); \
-            if (timer_pending(baum->cellCount_timer)) {    \
-                timer_del(baum->cellCount_timer);     \
-                baum_cellCount_timer_cb(baum);             \
-            } \
-            return (cur - 2 - buf); \
-        } \
-    } \
-} while (0)
-
-    EAT(req);
-    switch (req) {
-    case BAUM_REQ_DisplayData:
-    {
-        uint8_t cells[baum->x * baum->y], c;
-        uint8_t text[baum->x * baum->y];
-        uint8_t zero[baum->x * baum->y];
-        int cursor = BRLAPI_CURSOR_OFF;
-        int i;
-
-        /* Allow 100ms to complete the DisplayData packet */
-        timer_mod(baum->cellCount_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
-                       NANOSECONDS_PER_SECOND / 10);
-        for (i = 0; i < baum->x * baum->y ; i++) {
-            EAT(c);
-            cells[i] = c;
-            if ((c & (BRLAPI_DOT7|BRLAPI_DOT8))
-                    == (BRLAPI_DOT7|BRLAPI_DOT8)) {
-                cursor = i + 1;
-                c &= ~(BRLAPI_DOT7|BRLAPI_DOT8);
-            }
-            c = nabcc_translation[DOTS2ASCII][c];
-            if (!c) {
-                c = '?';
-            }
-            text[i] = c;
-        }
-        timer_del(baum->cellCount_timer);
-
-        memset(zero, 0, sizeof(zero));
-
-        brlapi_writeArguments_t wa = {
-            .displayNumber = BRLAPI_DISPLAY_DEFAULT,
-            .regionBegin = 1,
-            .regionSize = baum->x * baum->y,
-            .text = (char *)text,
-            .textSize = baum->x * baum->y,
-            .andMask = zero,
-            .orMask = cells,
-            .cursor = cursor,
-            .charset = (char *)"ISO-8859-1",
-        };
-
-        if (brlapi__write(baum->brlapi, &wa) == -1)
-            brlapi_perror("baum brlapi_write");
-        break;
-    }
-    case BAUM_REQ_SetMode:
-    {
-        uint8_t mode, setting;
-        DPRINTF("SetMode\n");
-        EAT(mode);
-        EAT(setting);
-        /* ignore */
-        break;
-    }
-    case BAUM_REQ_SetProtocol:
-    {
-        uint8_t protocol;
-        DPRINTF("SetProtocol\n");
-        EAT(protocol);
-        /* ignore */
-        break;
-    }
-    case BAUM_REQ_GetDeviceIdentity:
-    {
-        uint8_t identity[17] = { BAUM_RSP_DeviceIdentity,
-            'B','a','u','m',' ','V','a','r','i','o' };
-        DPRINTF("GetDeviceIdentity\n");
-        identity[11] = '0' + baum->x / 10;
-        identity[12] = '0' + baum->x % 10;
-        baum_write_packet(baum, identity, sizeof(identity));
-        break;
-    }
-    case BAUM_REQ_GetVersionNumber:
-    {
-        uint8_t version[] = { BAUM_RSP_VersionNumber, 1 }; /* ? */
-        DPRINTF("GetVersionNumber\n");
-        baum_write_packet(baum, version, sizeof(version));
-        break;
-    }
-    case BAUM_REQ_GetSerialNumber:
-    {
-        uint8_t serial[] = { BAUM_RSP_SerialNumber,
-            '0','0','0','0','0','0','0','0' };
-        DPRINTF("GetSerialNumber\n");
-        baum_write_packet(baum, serial, sizeof(serial));
-        break;
-    }
-    case BAUM_REQ_GetKeys:
-    {
-        DPRINTF("Get%0#2x\n", req);
-        /* ignore */
-        break;
-    }
-    default:
-        DPRINTF("unrecognized request %0#2x\n", req);
-        do
-            if (!len--)
-                return 0;
-        while (*cur++ != ESC);
-        cur--;
-        break;
-    }
-    return cur - buf;
-}
-
-/* The other end is writing some data.  Store it and try to interpret */
-static int baum_chr_write(Chardev *chr, const uint8_t *buf, int len)
-{
-    BaumChardev *baum = BAUM_CHARDEV(chr);
-    int tocopy, cur, eaten, orig_len = len;
-
-    if (!len)
-        return 0;
-    if (!baum->brlapi)
-        return len;
-    if (!baum_deferred_init(baum))
-        return len;
-
-    while (len) {
-        /* Complete our buffer as much as possible */
-        tocopy = len;
-        if (tocopy > BUF_SIZE - baum->in_buf_used)
-            tocopy = BUF_SIZE - baum->in_buf_used;
-
-        memcpy(baum->in_buf + baum->in_buf_used, buf, tocopy);
-        baum->in_buf_used += tocopy;
-        buf += tocopy;
-        len -= tocopy;
-
-        /* Interpret it as much as possible */
-        cur = 0;
-        while (cur < baum->in_buf_used &&
-                (eaten = baum_eat_packet(baum, baum->in_buf + cur, baum->in_buf_used - cur)))
-            cur += eaten;
-
-        /* Shift the remainder */
-        if (cur) {
-            memmove(baum->in_buf, baum->in_buf + cur, baum->in_buf_used - cur);
-            baum->in_buf_used -= cur;
-        }
-
-        /* And continue if any data left */
-    }
-    return orig_len;
-}
-
-/* Send the key code to the other end */
-static void baum_send_key(BaumChardev *baum, uint8_t type, uint8_t value)
-{
-    uint8_t packet[] = { type, value };
-    DPRINTF("writing key %x %x\n", type, value);
-    baum_write_packet(baum, packet, sizeof(packet));
-}
-
-static void baum_send_key2(BaumChardev *baum, uint8_t type, uint8_t value,
-                           uint8_t value2)
-{
-    uint8_t packet[] = { type, value, value2 };
-    DPRINTF("writing key %x %x\n", type, value);
-    baum_write_packet(baum, packet, sizeof(packet));
-}
-
-/* We got some data on the BrlAPI socket */
-static void baum_chr_read(void *opaque)
-{
-    BaumChardev *baum = BAUM_CHARDEV(opaque);
-    brlapi_keyCode_t code;
-    int ret;
-    if (!baum->brlapi)
-        return;
-    if (!baum_deferred_init(baum))
-        return;
-    while ((ret = brlapi__readKey(baum->brlapi, 0, &code)) == 1) {
-        DPRINTF("got key %"BRLAPI_PRIxKEYCODE"\n", code);
-        /* Emulate */
-        switch (code & BRLAPI_KEY_TYPE_MASK) {
-        case BRLAPI_KEY_TYPE_CMD:
-            switch (code & BRLAPI_KEY_CMD_BLK_MASK) {
-            case BRLAPI_KEY_CMD_ROUTE:
-                baum_send_key(baum, BAUM_RSP_RoutingKey, (code & BRLAPI_KEY_CMD_ARG_MASK)+1);
-                baum_send_key(baum, BAUM_RSP_RoutingKey, 0);
-                break;
-            case 0:
-                switch (code & BRLAPI_KEY_CMD_ARG_MASK) {
-                case BRLAPI_KEY_CMD_FWINLT:
-                    baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL2);
-                    baum_send_key(baum, BAUM_RSP_TopKeys, 0);
-                    break;
-                case BRLAPI_KEY_CMD_FWINRT:
-                    baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TR2);
-                    baum_send_key(baum, BAUM_RSP_TopKeys, 0);
-                    break;
-                case BRLAPI_KEY_CMD_LNUP:
-                    baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TR1);
-                    baum_send_key(baum, BAUM_RSP_TopKeys, 0);
-                    break;
-                case BRLAPI_KEY_CMD_LNDN:
-                    baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TR3);
-                    baum_send_key(baum, BAUM_RSP_TopKeys, 0);
-                    break;
-                case BRLAPI_KEY_CMD_TOP:
-                    baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL1|BAUM_TR1);
-                    baum_send_key(baum, BAUM_RSP_TopKeys, 0);
-                    break;
-                case BRLAPI_KEY_CMD_BOT:
-                    baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL3|BAUM_TR3);
-                    baum_send_key(baum, BAUM_RSP_TopKeys, 0);
-                    break;
-                case BRLAPI_KEY_CMD_TOP_LEFT:
-                    baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL2|BAUM_TR1);
-                    baum_send_key(baum, BAUM_RSP_TopKeys, 0);
-                    break;
-                case BRLAPI_KEY_CMD_BOT_LEFT:
-                    baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL2|BAUM_TR3);
-                    baum_send_key(baum, BAUM_RSP_TopKeys, 0);
-                    break;
-                case BRLAPI_KEY_CMD_HOME:
-                    baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL2|BAUM_TR1|BAUM_TR3);
-                    baum_send_key(baum, BAUM_RSP_TopKeys, 0);
-                    break;
-                case BRLAPI_KEY_CMD_PREFMENU:
-                    baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL1|BAUM_TL3|BAUM_TR1);
-                    baum_send_key(baum, BAUM_RSP_TopKeys, 0);
-                    break;
-                }
-            }
-            break;
-        case BRLAPI_KEY_TYPE_SYM:
-            {
-                brlapi_keyCode_t keysym = code & BRLAPI_KEY_CODE_MASK;
-                if (keysym < 0x100) {
-                    uint8_t dots = nabcc_translation[ASCII2DOTS][keysym];
-                    if (dots) {
-                        baum_send_key2(baum, BAUM_RSP_EntryKeys, 0, dots);
-                        baum_send_key2(baum, BAUM_RSP_EntryKeys, 0, 0);
-                    }
-                }
-                break;
-            }
-        }
-    }
-    if (ret == -1 && (brlapi_errno != BRLAPI_ERROR_LIBCERR || errno != EINTR)) {
-        brlapi_perror("baum: brlapi_readKey");
-        brlapi__closeConnection(baum->brlapi);
-        g_free(baum->brlapi);
-        baum->brlapi = NULL;
-    }
-}
-
-static void char_braille_finalize(Object *obj)
-{
-    BaumChardev *baum = BAUM_CHARDEV(obj);
-
-    timer_free(baum->cellCount_timer);
-    if (baum->brlapi) {
-        brlapi__closeConnection(baum->brlapi);
-        g_free(baum->brlapi);
-    }
-}
-
-static void baum_chr_open(Chardev *chr,
-                          ChardevBackend *backend,
-                          bool *be_opened,
-                          Error **errp)
-{
-    BaumChardev *baum = BAUM_CHARDEV(chr);
-    brlapi_handle_t *handle;
-
-    handle = g_malloc0(brlapi_getHandleSize());
-    baum->brlapi = handle;
-
-    baum->brlapi_fd = brlapi__openConnection(handle, NULL, NULL);
-    if (baum->brlapi_fd == -1) {
-        error_setg(errp, "brlapi__openConnection: %s",
-                   brlapi_strerror(brlapi_error_location()));
-        g_free(handle);
-        return;
-    }
-    baum->deferred_init = 0;
-
-    baum->cellCount_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, baum_cellCount_timer_cb, baum);
-
-    qemu_set_fd_handler(baum->brlapi_fd, baum_chr_read, NULL, baum);
-}
-
-static void char_braille_class_init(ObjectClass *oc, void *data)
-{
-    ChardevClass *cc = CHARDEV_CLASS(oc);
-
-    cc->open = baum_chr_open;
-    cc->chr_write = baum_chr_write;
-    cc->chr_accept_input = baum_chr_accept_input;
-}
-
-static const TypeInfo char_braille_type_info = {
-    .name = TYPE_CHARDEV_BRAILLE,
-    .parent = TYPE_CHARDEV,
-    .instance_size = sizeof(BaumChardev),
-    .instance_finalize = char_braille_finalize,
-    .class_init = char_braille_class_init,
-};
-
-static void register_types(void)
-{
-    type_register_static(&char_braille_type_info);
-}
-
-type_init(register_types);