diff options
Diffstat (limited to 'hw/hid.c')
| -rw-r--r-- | hw/hid.c | 498 |
1 files changed, 0 insertions, 498 deletions
diff --git a/hw/hid.c b/hw/hid.c deleted file mode 100644 index 5fbde98f65..0000000000 --- a/hw/hid.c +++ /dev/null @@ -1,498 +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 "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, 0x32, 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, 0x00, 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) { - qemu_del_timer(hs->idle_timer); - qemu_free_timer(hs->idle_timer); - hs->idle_timer = NULL; - } -} - -void hid_set_next_idle(HIDState *hs) -{ - if (hs->idle) { - uint64_t expire_time = qemu_get_clock_ns(vm_clock) + - get_ticks_per_sec() * hs->idle * 4 / 1000; - if (!hs->idle_timer) { - hs->idle_timer = qemu_new_timer_ns(vm_clock, hid_idle_timer, hs); - } - qemu_mod_timer_ns(hs->idle_timer, expire_time); - } else { - hid_del_idle_timer(hs); - } -} - -static void hid_pointer_event_clear(HIDPointerEvent *e, int buttons) -{ - e->xdx = e->ydy = e->dz = 0; - e->buttons_state = buttons; -} - -static void hid_pointer_event_combine(HIDPointerEvent *e, int xyrel, - int x1, int y1, int z1) { - if (xyrel) { - e->xdx += x1; - e->ydy += y1; - } else { - e->xdx = x1; - e->ydy = y1; - /* Windows drivers do not like the 0/0 position and ignore such - * events. */ - if (!(x1 | y1)) { - e->xdx = 1; - } - } - e->dz += z1; -} - -static void hid_pointer_event(void *opaque, - int x1, int y1, int z1, int buttons_state) -{ - HIDState *hs = opaque; - unsigned use_slot = (hs->head + hs->n - 1) & QUEUE_MASK; - unsigned previous_slot = (use_slot - 1) & QUEUE_MASK; - - /* We combine events where feasible to keep the queue small. We shouldn't - * combine anything with the first event of a particular button state, as - * that would change the location of the button state change. When the - * queue is empty, a second event is needed because we don't know if - * the first event changed the button state. */ - if (hs->n == QUEUE_LENGTH) { - /* Queue full. Discard old button state, combine motion normally. */ - hs->ptr.queue[use_slot].buttons_state = buttons_state; - } else if (hs->n < 2 || - hs->ptr.queue[use_slot].buttons_state != buttons_state || - hs->ptr.queue[previous_slot].buttons_state != - hs->ptr.queue[use_slot].buttons_state) { - /* Cannot or should not combine, so add an empty item to the queue. */ - QUEUE_INCR(use_slot); - hs->n++; - hid_pointer_event_clear(&hs->ptr.queue[use_slot], buttons_state); - } - hid_pointer_event_combine(&hs->ptr.queue[use_slot], - hs->kind == HID_MOUSE, - x1, y1, z1); - hs->event(hs); -} - -static void hid_keyboard_event(void *opaque, int keycode) -{ - HIDState *hs = opaque; - int slot; - - if (hs->n == QUEUE_LENGTH) { - fprintf(stderr, "usb-kbd: warning: key event queue full\n"); - return; - } - slot = (hs->head + hs->n) & QUEUE_MASK; hs->n++; - hs->kbd.keycodes[slot] = keycode; - hs->event(hs); -} - -static void hid_keyboard_process_keycode(HIDState *hs) -{ - uint8_t hid_code, 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; - hid_code = hid_usage_keys[key | ((hs->kbd.modifiers >> 1) & (1 << 7))]; - hs->kbd.modifiers &= ~(1 << 8); - - switch (hid_code) { - case 0x00: - return; - - case 0xe0: - if (hs->kbd.modifiers & (1 << 9)) { - hs->kbd.modifiers ^= 3 << 8; - return; - } - case 0xe1 ... 0xe7: - if (keycode & (1 << 7)) { - hs->kbd.modifiers &= ~(1 << (hid_code & 0x0f)); - return; - } - case 0xe8 ... 0xef: - hs->kbd.modifiers |= 1 << (hid_code & 0x0f); - return; - } - - 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_activate_mouse_event_handler(hs->ptr.eh_entry); - hs->ptr.mouse_grabbed = 1; - } -} - -int hid_pointer_poll(HIDState *hs, uint8_t *buf, int len) -{ - int dx, dy, dz, b, 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; - - b = 0; - if (e->buttons_state & MOUSE_EVENT_LBUTTON) { - b |= 0x01; - } - if (e->buttons_state & MOUSE_EVENT_RBUTTON) { - b |= 0x02; - } - if (e->buttons_state & MOUSE_EVENT_MBUTTON) { - b |= 0x04; - } - - 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++] = b; - } - 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++] = b; - } - 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) -{ - switch (hs->kind) { - case HID_KEYBOARD: - qemu_remove_kbd_event_handler(); - break; - case HID_MOUSE: - case HID_TABLET: - qemu_remove_mouse_event_handler(hs->ptr.eh_entry); - break; - } - hid_del_idle_timer(hs); -} - -void hid_init(HIDState *hs, int kind, HIDEventFunc event) -{ - hs->kind = kind; - hs->event = event; - - if (hs->kind == HID_KEYBOARD) { - qemu_add_kbd_event_handler(hid_keyboard_event, hs); - } else if (hs->kind == HID_MOUSE) { - hs->ptr.eh_entry = qemu_add_mouse_event_handler(hid_pointer_event, hs, - 0, "QEMU HID Mouse"); - } else if (hs->kind == HID_TABLET) { - hs->ptr.eh_entry = qemu_add_mouse_event_handler(hid_pointer_event, hs, - 1, "QEMU HID Tablet"); - } -} - -static int hid_post_load(void *opaque, int version_id) -{ - HIDState *s = opaque; - - hid_set_next_idle(s); - 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(), - } -}; |