diff options
Diffstat (limited to 'qemu/hw/input/hid.c')
| -rw-r--r-- | qemu/hw/input/hid.c | 618 |
1 files changed, 0 insertions, 618 deletions
diff --git a/qemu/hw/input/hid.c b/qemu/hw/input/hid.c deleted file mode 100644 index d92c7463b..000000000 --- a/qemu/hw/input/hid.c +++ /dev/null @@ -1,618 +0,0 @@ -/* - * QEMU HID devices - * - * Copyright (c) 2005 Fabrice Bellard - * Copyright (c) 2007 OpenMoko, Inc. (andrew@openedhand.com) - * - * 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 "hw/hw.h" -#include "ui/console.h" -#include "qemu/timer.h" -#include "hw/input/hid.h" - -#define HID_USAGE_ERROR_ROLLOVER 0x01 -#define HID_USAGE_POSTFAIL 0x02 -#define HID_USAGE_ERROR_UNDEFINED 0x03 - -/* Indices are QEMU keycodes, values are from HID Usage Table. Indices - * above 0x80 are for keys that come after 0xe0 or 0xe1+0x1d or 0xe1+0x9d. */ -static const uint8_t hid_usage_keys[0x100] = { - 0x00, 0x29, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, - 0x24, 0x25, 0x26, 0x27, 0x2d, 0x2e, 0x2a, 0x2b, - 0x14, 0x1a, 0x08, 0x15, 0x17, 0x1c, 0x18, 0x0c, - 0x12, 0x13, 0x2f, 0x30, 0x28, 0xe0, 0x04, 0x16, - 0x07, 0x09, 0x0a, 0x0b, 0x0d, 0x0e, 0x0f, 0x33, - 0x34, 0x35, 0xe1, 0x31, 0x1d, 0x1b, 0x06, 0x19, - 0x05, 0x11, 0x10, 0x36, 0x37, 0x38, 0xe5, 0x55, - 0xe2, 0x2c, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, - 0x3f, 0x40, 0x41, 0x42, 0x43, 0x53, 0x47, 0x5f, - 0x60, 0x61, 0x56, 0x5c, 0x5d, 0x5e, 0x57, 0x59, - 0x5a, 0x5b, 0x62, 0x63, 0x00, 0x00, 0x64, 0x44, - 0x45, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, - 0xe8, 0xe9, 0x71, 0x72, 0x73, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x85, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0xe3, 0xe7, 0x65, - - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x58, 0xe4, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x00, 0x46, - 0xe6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x48, 0x00, 0x4a, - 0x52, 0x4b, 0x00, 0x50, 0x00, 0x4f, 0x00, 0x4d, - 0x51, 0x4e, 0x49, 0x4c, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0xe3, 0xe7, 0x65, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -}; - -bool hid_has_events(HIDState *hs) -{ - return hs->n > 0 || hs->idle_pending; -} - -static void hid_idle_timer(void *opaque) -{ - HIDState *hs = opaque; - - hs->idle_pending = true; - hs->event(hs); -} - -static void hid_del_idle_timer(HIDState *hs) -{ - if (hs->idle_timer) { - timer_del(hs->idle_timer); - timer_free(hs->idle_timer); - hs->idle_timer = NULL; - } -} - -void hid_set_next_idle(HIDState *hs) -{ - if (hs->idle) { - uint64_t expire_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + - NANOSECONDS_PER_SECOND * hs->idle * 4 / 1000; - if (!hs->idle_timer) { - hs->idle_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, hid_idle_timer, hs); - } - timer_mod_ns(hs->idle_timer, expire_time); - } else { - hid_del_idle_timer(hs); - } -} - -static void hid_pointer_event(DeviceState *dev, QemuConsole *src, - InputEvent *evt) -{ - static const int bmap[INPUT_BUTTON__MAX] = { - [INPUT_BUTTON_LEFT] = 0x01, - [INPUT_BUTTON_RIGHT] = 0x02, - [INPUT_BUTTON_MIDDLE] = 0x04, - }; - HIDState *hs = (HIDState *)dev; - HIDPointerEvent *e; - InputMoveEvent *move; - InputBtnEvent *btn; - - assert(hs->n < QUEUE_LENGTH); - e = &hs->ptr.queue[(hs->head + hs->n) & QUEUE_MASK]; - - switch (evt->type) { - case INPUT_EVENT_KIND_REL: - move = evt->u.rel.data; - if (move->axis == INPUT_AXIS_X) { - e->xdx += move->value; - } else if (move->axis == INPUT_AXIS_Y) { - e->ydy += move->value; - } - break; - - case INPUT_EVENT_KIND_ABS: - move = evt->u.abs.data; - if (move->axis == INPUT_AXIS_X) { - e->xdx = move->value; - } else if (move->axis == INPUT_AXIS_Y) { - e->ydy = move->value; - } - break; - - case INPUT_EVENT_KIND_BTN: - btn = evt->u.btn.data; - if (btn->down) { - e->buttons_state |= bmap[btn->button]; - if (btn->button == INPUT_BUTTON_WHEEL_UP) { - e->dz--; - } else if (btn->button == INPUT_BUTTON_WHEEL_DOWN) { - e->dz++; - } - } else { - e->buttons_state &= ~bmap[btn->button]; - } - break; - - default: - /* keep gcc happy */ - break; - } - -} - -static void hid_pointer_sync(DeviceState *dev) -{ - HIDState *hs = (HIDState *)dev; - HIDPointerEvent *prev, *curr, *next; - bool event_compression = false; - - if (hs->n == QUEUE_LENGTH-1) { - /* - * Queue full. We are losing information, but we at least - * keep track of most recent button state. - */ - return; - } - - prev = &hs->ptr.queue[(hs->head + hs->n - 1) & QUEUE_MASK]; - curr = &hs->ptr.queue[(hs->head + hs->n) & QUEUE_MASK]; - next = &hs->ptr.queue[(hs->head + hs->n + 1) & QUEUE_MASK]; - - if (hs->n > 0) { - /* - * No button state change between previous and current event - * (and previous wasn't seen by the guest yet), so there is - * motion information only and we can combine the two event - * into one. - */ - if (curr->buttons_state == prev->buttons_state) { - event_compression = true; - } - } - - if (event_compression) { - /* add current motion to previous, clear current */ - if (hs->kind == HID_MOUSE) { - prev->xdx += curr->xdx; - curr->xdx = 0; - prev->ydy += curr->ydy; - curr->ydy = 0; - } else { - prev->xdx = curr->xdx; - prev->ydy = curr->ydy; - } - prev->dz += curr->dz; - curr->dz = 0; - } else { - /* prepate next (clear rel, copy abs + btns) */ - if (hs->kind == HID_MOUSE) { - next->xdx = 0; - next->ydy = 0; - } else { - next->xdx = curr->xdx; - next->ydy = curr->ydy; - } - next->dz = 0; - next->buttons_state = curr->buttons_state; - /* make current guest visible, notify guest */ - hs->n++; - hs->event(hs); - } -} - -static void hid_keyboard_event(DeviceState *dev, QemuConsole *src, - InputEvent *evt) -{ - HIDState *hs = (HIDState *)dev; - int scancodes[3], i, count; - int slot; - InputKeyEvent *key = evt->u.key.data; - - count = qemu_input_key_value_to_scancode(key->key, - key->down, - scancodes); - if (hs->n + count > QUEUE_LENGTH) { - fprintf(stderr, "usb-kbd: warning: key event queue full\n"); - return; - } - for (i = 0; i < count; i++) { - slot = (hs->head + hs->n) & QUEUE_MASK; hs->n++; - hs->kbd.keycodes[slot] = scancodes[i]; - } - hs->event(hs); -} - -static void hid_keyboard_process_keycode(HIDState *hs) -{ - uint8_t hid_code, index, key; - int i, keycode, slot; - - if (hs->n == 0) { - return; - } - slot = hs->head & QUEUE_MASK; QUEUE_INCR(hs->head); hs->n--; - keycode = hs->kbd.keycodes[slot]; - - key = keycode & 0x7f; - index = key | ((hs->kbd.modifiers & (1 << 8)) >> 1); - hid_code = hid_usage_keys[index]; - hs->kbd.modifiers &= ~(1 << 8); - - switch (hid_code) { - case 0x00: - return; - - case 0xe0: - assert(key == 0x1d); - if (hs->kbd.modifiers & (1 << 9)) { - /* The hid_codes for the 0xe1/0x1d scancode sequence are 0xe9/0xe0. - * Here we're processing the second hid_code. By dropping bit 9 - * and setting bit 8, the scancode after 0x1d will access the - * second half of the table. - */ - hs->kbd.modifiers ^= (1 << 8) | (1 << 9); - return; - } - /* fall through to process Ctrl_L */ - case 0xe1 ... 0xe7: - /* Ctrl_L/Ctrl_R, Shift_L/Shift_R, Alt_L/Alt_R, Win_L/Win_R. - * Handle releases here, or fall through to process presses. - */ - if (keycode & (1 << 7)) { - hs->kbd.modifiers &= ~(1 << (hid_code & 0x0f)); - return; - } - /* fall through */ - case 0xe8 ... 0xe9: - /* USB modifiers are just 1 byte long. Bits 8 and 9 of - * hs->kbd.modifiers implement a state machine that detects the - * 0xe0 and 0xe1/0x1d sequences. These bits do not follow the - * usual rules where bit 7 marks released keys; they are cleared - * elsewhere in the function as the state machine dictates. - */ - hs->kbd.modifiers |= 1 << (hid_code & 0x0f); - return; - - case 0xea ... 0xef: - abort(); - - default: - break; - } - - if (keycode & (1 << 7)) { - for (i = hs->kbd.keys - 1; i >= 0; i--) { - if (hs->kbd.key[i] == hid_code) { - hs->kbd.key[i] = hs->kbd.key[-- hs->kbd.keys]; - hs->kbd.key[hs->kbd.keys] = 0x00; - break; - } - } - if (i < 0) { - return; - } - } else { - for (i = hs->kbd.keys - 1; i >= 0; i--) { - if (hs->kbd.key[i] == hid_code) { - break; - } - } - if (i < 0) { - if (hs->kbd.keys < sizeof(hs->kbd.key)) { - hs->kbd.key[hs->kbd.keys++] = hid_code; - } - } else { - return; - } - } -} - -static inline int int_clamp(int val, int vmin, int vmax) -{ - if (val < vmin) { - return vmin; - } else if (val > vmax) { - return vmax; - } else { - return val; - } -} - -void hid_pointer_activate(HIDState *hs) -{ - if (!hs->ptr.mouse_grabbed) { - qemu_input_handler_activate(hs->s); - hs->ptr.mouse_grabbed = 1; - } -} - -int hid_pointer_poll(HIDState *hs, uint8_t *buf, int len) -{ - int dx, dy, dz, l; - int index; - HIDPointerEvent *e; - - hs->idle_pending = false; - - hid_pointer_activate(hs); - - /* When the buffer is empty, return the last event. Relative - movements will all be zero. */ - index = (hs->n ? hs->head : hs->head - 1); - e = &hs->ptr.queue[index & QUEUE_MASK]; - - if (hs->kind == HID_MOUSE) { - dx = int_clamp(e->xdx, -127, 127); - dy = int_clamp(e->ydy, -127, 127); - e->xdx -= dx; - e->ydy -= dy; - } else { - dx = e->xdx; - dy = e->ydy; - } - dz = int_clamp(e->dz, -127, 127); - e->dz -= dz; - - if (hs->n && - !e->dz && - (hs->kind == HID_TABLET || (!e->xdx && !e->ydy))) { - /* that deals with this event */ - QUEUE_INCR(hs->head); - hs->n--; - } - - /* Appears we have to invert the wheel direction */ - dz = 0 - dz; - l = 0; - switch (hs->kind) { - case HID_MOUSE: - if (len > l) { - buf[l++] = e->buttons_state; - } - if (len > l) { - buf[l++] = dx; - } - if (len > l) { - buf[l++] = dy; - } - if (len > l) { - buf[l++] = dz; - } - break; - - case HID_TABLET: - if (len > l) { - buf[l++] = e->buttons_state; - } - if (len > l) { - buf[l++] = dx & 0xff; - } - if (len > l) { - buf[l++] = dx >> 8; - } - if (len > l) { - buf[l++] = dy & 0xff; - } - if (len > l) { - buf[l++] = dy >> 8; - } - if (len > l) { - buf[l++] = dz; - } - break; - - default: - abort(); - } - - return l; -} - -int hid_keyboard_poll(HIDState *hs, uint8_t *buf, int len) -{ - hs->idle_pending = false; - - if (len < 2) { - return 0; - } - - hid_keyboard_process_keycode(hs); - - buf[0] = hs->kbd.modifiers & 0xff; - buf[1] = 0; - if (hs->kbd.keys > 6) { - memset(buf + 2, HID_USAGE_ERROR_ROLLOVER, MIN(8, len) - 2); - } else { - memcpy(buf + 2, hs->kbd.key, MIN(8, len) - 2); - } - - return MIN(8, len); -} - -int hid_keyboard_write(HIDState *hs, uint8_t *buf, int len) -{ - if (len > 0) { - int ledstate = 0; - /* 0x01: Num Lock LED - * 0x02: Caps Lock LED - * 0x04: Scroll Lock LED - * 0x08: Compose LED - * 0x10: Kana LED */ - hs->kbd.leds = buf[0]; - if (hs->kbd.leds & 0x04) { - ledstate |= QEMU_SCROLL_LOCK_LED; - } - if (hs->kbd.leds & 0x01) { - ledstate |= QEMU_NUM_LOCK_LED; - } - if (hs->kbd.leds & 0x02) { - ledstate |= QEMU_CAPS_LOCK_LED; - } - kbd_put_ledstate(ledstate); - } - return 0; -} - -void hid_reset(HIDState *hs) -{ - switch (hs->kind) { - case HID_KEYBOARD: - memset(hs->kbd.keycodes, 0, sizeof(hs->kbd.keycodes)); - memset(hs->kbd.key, 0, sizeof(hs->kbd.key)); - hs->kbd.keys = 0; - break; - case HID_MOUSE: - case HID_TABLET: - memset(hs->ptr.queue, 0, sizeof(hs->ptr.queue)); - break; - } - hs->head = 0; - hs->n = 0; - hs->protocol = 1; - hs->idle = 0; - hs->idle_pending = false; - hid_del_idle_timer(hs); -} - -void hid_free(HIDState *hs) -{ - qemu_input_handler_unregister(hs->s); - hid_del_idle_timer(hs); -} - -static QemuInputHandler hid_keyboard_handler = { - .name = "QEMU HID Keyboard", - .mask = INPUT_EVENT_MASK_KEY, - .event = hid_keyboard_event, -}; - -static QemuInputHandler hid_mouse_handler = { - .name = "QEMU HID Mouse", - .mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_REL, - .event = hid_pointer_event, - .sync = hid_pointer_sync, -}; - -static QemuInputHandler hid_tablet_handler = { - .name = "QEMU HID Tablet", - .mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_ABS, - .event = hid_pointer_event, - .sync = hid_pointer_sync, -}; - -void hid_init(HIDState *hs, int kind, HIDEventFunc event) -{ - hs->kind = kind; - hs->event = event; - - if (hs->kind == HID_KEYBOARD) { - hs->s = qemu_input_handler_register((DeviceState *)hs, - &hid_keyboard_handler); - qemu_input_handler_activate(hs->s); - } else if (hs->kind == HID_MOUSE) { - hs->s = qemu_input_handler_register((DeviceState *)hs, - &hid_mouse_handler); - } else if (hs->kind == HID_TABLET) { - hs->s = qemu_input_handler_register((DeviceState *)hs, - &hid_tablet_handler); - } -} - -static int hid_post_load(void *opaque, int version_id) -{ - HIDState *s = opaque; - - hid_set_next_idle(s); - - if (s->n == QUEUE_LENGTH && (s->kind == HID_TABLET || - s->kind == HID_MOUSE)) { - /* - * Handle ptr device migration from old qemu with full queue. - * - * Throw away everything but the last event, so we propagate - * at least the current button state to the guest. Also keep - * current position for the tablet, signal "no motion" for the - * mouse. - */ - HIDPointerEvent evt; - evt = s->ptr.queue[(s->head+s->n) & QUEUE_MASK]; - if (s->kind == HID_MOUSE) { - evt.xdx = 0; - evt.ydy = 0; - } - s->ptr.queue[0] = evt; - s->head = 0; - s->n = 1; - } - return 0; -} - -static const VMStateDescription vmstate_hid_ptr_queue = { - .name = "HIDPointerEventQueue", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_INT32(xdx, HIDPointerEvent), - VMSTATE_INT32(ydy, HIDPointerEvent), - VMSTATE_INT32(dz, HIDPointerEvent), - VMSTATE_INT32(buttons_state, HIDPointerEvent), - VMSTATE_END_OF_LIST() - } -}; - -const VMStateDescription vmstate_hid_ptr_device = { - .name = "HIDPointerDevice", - .version_id = 1, - .minimum_version_id = 1, - .post_load = hid_post_load, - .fields = (VMStateField[]) { - VMSTATE_STRUCT_ARRAY(ptr.queue, HIDState, QUEUE_LENGTH, 0, - vmstate_hid_ptr_queue, HIDPointerEvent), - VMSTATE_UINT32(head, HIDState), - VMSTATE_UINT32(n, HIDState), - VMSTATE_INT32(protocol, HIDState), - VMSTATE_UINT8(idle, HIDState), - VMSTATE_END_OF_LIST(), - } -}; - -const VMStateDescription vmstate_hid_keyboard_device = { - .name = "HIDKeyboardDevice", - .version_id = 1, - .minimum_version_id = 1, - .post_load = hid_post_load, - .fields = (VMStateField[]) { - VMSTATE_UINT32_ARRAY(kbd.keycodes, HIDState, QUEUE_LENGTH), - VMSTATE_UINT32(head, HIDState), - VMSTATE_UINT32(n, HIDState), - VMSTATE_UINT16(kbd.modifiers, HIDState), - VMSTATE_UINT8(kbd.leds, HIDState), - VMSTATE_UINT8_ARRAY(kbd.key, HIDState, 16), - VMSTATE_INT32(kbd.keys, HIDState), - VMSTATE_INT32(protocol, HIDState), - VMSTATE_UINT8(idle, HIDState), - VMSTATE_END_OF_LIST(), - } -}; |