/* * QEMU PS/2 keyboard/mouse emulation * * Copyright (c) 2003 Fabrice Bellard * * 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 "qemu/log.h" #include "hw/irq.h" #include "hw/sysbus.h" #include "hw/input/ps2.h" #include "migration/vmstate.h" #include "ui/console.h" #include "ui/input.h" #include "sysemu/reset.h" #include "sysemu/runstate.h" #include "qapi/error.h" #include "trace.h" /* Keyboard Commands */ #define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */ #define KBD_CMD_ECHO 0xEE #define KBD_CMD_SCANCODE 0xF0 /* Get/set scancode set */ #define KBD_CMD_GET_ID 0xF2 /* get keyboard ID */ #define KBD_CMD_SET_RATE 0xF3 /* Set typematic rate */ #define KBD_CMD_ENABLE 0xF4 /* Enable scanning */ #define KBD_CMD_RESET_DISABLE 0xF5 /* reset and disable scanning */ #define KBD_CMD_RESET_ENABLE 0xF6 /* reset and enable scanning */ #define KBD_CMD_RESET 0xFF /* Reset */ #define KBD_CMD_SET_MAKE_BREAK 0xFC /* Set Make and Break mode */ #define KBD_CMD_SET_TYPEMATIC 0xFA /* Set Typematic Make and Break mode */ /* Keyboard Replies */ #define KBD_REPLY_POR 0xAA /* Power on reset */ #define KBD_REPLY_ID 0xAB /* Keyboard ID */ #define KBD_REPLY_ACK 0xFA /* Command ACK */ #define KBD_REPLY_RESEND 0xFE /* Command NACK, send the cmd again */ /* Mouse Commands */ #define AUX_SET_SCALE11 0xE6 /* Set 1:1 scaling */ #define AUX_SET_SCALE21 0xE7 /* Set 2:1 scaling */ #define AUX_SET_RES 0xE8 /* Set resolution */ #define AUX_GET_SCALE 0xE9 /* Get scaling factor */ #define AUX_SET_STREAM 0xEA /* Set stream mode */ #define AUX_POLL 0xEB /* Poll */ #define AUX_RESET_WRAP 0xEC /* Reset wrap mode */ #define AUX_SET_WRAP 0xEE /* Set wrap mode */ #define AUX_SET_REMOTE 0xF0 /* Set remote mode */ #define AUX_GET_TYPE 0xF2 /* Get type */ #define AUX_SET_SAMPLE 0xF3 /* Set sample rate */ #define AUX_ENABLE_DEV 0xF4 /* Enable aux device */ #define AUX_DISABLE_DEV 0xF5 /* Disable aux device */ #define AUX_SET_DEFAULT 0xF6 #define AUX_RESET 0xFF /* Reset aux device */ #define AUX_ACK 0xFA /* Command byte ACK. */ #define MOUSE_STATUS_REMOTE 0x40 #define MOUSE_STATUS_ENABLED 0x20 #define MOUSE_STATUS_SCALE21 0x10 #define PS2_QUEUE_SIZE 16 /* Queue size required by PS/2 protocol */ #define PS2_QUEUE_HEADROOM 8 /* Queue size for keyboard command replies */ /* Bits for 'modifiers' field in PS2KbdState */ #define MOD_CTRL_L (1 << 0) #define MOD_SHIFT_L (1 << 1) #define MOD_ALT_L (1 << 2) #define MOD_CTRL_R (1 << 3) #define MOD_SHIFT_R (1 << 4) #define MOD_ALT_R (1 << 5) static uint8_t translate_table[256] = { 0xff, 0x43, 0x41, 0x3f, 0x3d, 0x3b, 0x3c, 0x58, 0x64, 0x44, 0x42, 0x40, 0x3e, 0x0f, 0x29, 0x59, 0x65, 0x38, 0x2a, 0x70, 0x1d, 0x10, 0x02, 0x5a, 0x66, 0x71, 0x2c, 0x1f, 0x1e, 0x11, 0x03, 0x5b, 0x67, 0x2e, 0x2d, 0x20, 0x12, 0x05, 0x04, 0x5c, 0x68, 0x39, 0x2f, 0x21, 0x14, 0x13, 0x06, 0x5d, 0x69, 0x31, 0x30, 0x23, 0x22, 0x15, 0x07, 0x5e, 0x6a, 0x72, 0x32, 0x24, 0x16, 0x08, 0x09, 0x5f, 0x6b, 0x33, 0x25, 0x17, 0x18, 0x0b, 0x0a, 0x60, 0x6c, 0x34, 0x35, 0x26, 0x27, 0x19, 0x0c, 0x61, 0x6d, 0x73, 0x28, 0x74, 0x1a, 0x0d, 0x62, 0x6e, 0x3a, 0x36, 0x1c, 0x1b, 0x75, 0x2b, 0x63, 0x76, 0x55, 0x56, 0x77, 0x78, 0x79, 0x7a, 0x0e, 0x7b, 0x7c, 0x4f, 0x7d, 0x4b, 0x47, 0x7e, 0x7f, 0x6f, 0x52, 0x53, 0x50, 0x4c, 0x4d, 0x48, 0x01, 0x45, 0x57, 0x4e, 0x51, 0x4a, 0x37, 0x49, 0x46, 0x54, 0x80, 0x81, 0x82, 0x41, 0x54, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, }; static unsigned int ps2_modifier_bit(QKeyCode key) { switch (key) { case Q_KEY_CODE_CTRL: return MOD_CTRL_L; case Q_KEY_CODE_CTRL_R: return MOD_CTRL_R; case Q_KEY_CODE_SHIFT: return MOD_SHIFT_L; case Q_KEY_CODE_SHIFT_R: return MOD_SHIFT_R; case Q_KEY_CODE_ALT: return MOD_ALT_L; case Q_KEY_CODE_ALT_R: return MOD_ALT_R; default: return 0; } } static void ps2_reset_queue(PS2State *s) { PS2Queue *q = &s->queue; q->rptr = 0; q->wptr = 0; q->cwptr = -1; q->count = 0; } int ps2_queue_empty(PS2State *s) { return s->queue.count == 0; } void ps2_queue_noirq(PS2State *s, int b) { PS2Queue *q = &s->queue; if (q->count >= PS2_QUEUE_SIZE) { return; } q->data[q->wptr] = b; if (++q->wptr == PS2_BUFFER_SIZE) { q->wptr = 0; } q->count++; } static void ps2_raise_irq(PS2State *s) { qemu_set_irq(s->irq, 1); } static void ps2_lower_irq(PS2State *s) { qemu_set_irq(s->irq, 0); } void ps2_queue(PS2State *s, int b) { if (PS2_QUEUE_SIZE - s->queue.count < 1) { return; } ps2_queue_noirq(s, b); ps2_raise_irq(s); } void ps2_queue_2(PS2State *s, int b1, int b2) { if (PS2_QUEUE_SIZE - s->queue.count < 2) { return; } ps2_queue_noirq(s, b1); ps2_queue_noirq(s, b2); ps2_raise_irq(s); } void ps2_queue_3(PS2State *s, int b1, int b2, int b3) { if (PS2_QUEUE_SIZE - s->queue.count < 3) { return; } ps2_queue_noirq(s, b1); ps2_queue_noirq(s, b2); ps2_queue_noirq(s, b3); ps2_raise_irq(s); } void ps2_queue_4(PS2State *s, int b1, int b2, int b3, int b4) { if (PS2_QUEUE_SIZE - s->queue.count < 4) { return; } ps2_queue_noirq(s, b1); ps2_queue_noirq(s, b2); ps2_queue_noirq(s, b3); ps2_queue_noirq(s, b4); ps2_raise_irq(s); } static void ps2_cqueue_data(PS2Queue *q, int b) { q->data[q->cwptr] = b; if (++q->cwptr >= PS2_BUFFER_SIZE) { q->cwptr = 0; } q->count++; } static void ps2_cqueue_1(PS2State *s, int b1) { PS2Queue *q = &s->queue; q->rptr = (q->rptr - 1) & (PS2_BUFFER_SIZE - 1); q->cwptr = q->rptr; ps2_cqueue_data(q, b1); ps2_raise_irq(s); } static void ps2_cqueue_2(PS2State *s, int b1, int b2) { PS2Queue *q = &s->queue; q->rptr = (q->rptr - 2) & (PS2_BUFFER_SIZE - 1); q->cwptr = q->rptr; ps2_cqueue_data(q, b1); ps2_cqueue_data(q, b2); ps2_raise_irq(s); } static void ps2_cqueue_3(PS2State *s, int b1, int b2, int b3) { PS2Queue *q = &s->queue; q->rptr = (q->rptr - 3) & (PS2_BUFFER_SIZE - 1); q->cwptr = q->rptr; ps2_cqueue_data(q, b1); ps2_cqueue_data(q, b2); ps2_cqueue_data(q, b3); ps2_raise_irq(s); } static void ps2_cqueue_reset(PS2State *s) { PS2Queue *q = &s->queue; int ccount; if (q->cwptr == -1) { return; } ccount = (q->cwptr - q->rptr) & (PS2_BUFFER_SIZE - 1); q->count -= ccount; q->rptr = q->cwptr; q->cwptr = -1; } /* keycode is the untranslated scancode in the current scancode set. */ static void ps2_put_keycode(void *opaque, int keycode) { PS2KbdState *s = opaque; PS2State *ps = PS2_DEVICE(s); trace_ps2_put_keycode(opaque, keycode); qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER, NULL); if (s->translate) { if (keycode == 0xf0) { s->need_high_bit = true; } else if (s->need_high_bit) { ps2_queue(ps, translate_table[keycode] | 0x80); s->need_high_bit = false; } else { ps2_queue(ps, translate_table[keycode]); } } else { ps2_queue(ps, keycode); } } static void ps2_keyboard_event(DeviceState *dev, QemuConsole *src, InputEvent *evt) { PS2KbdState *s = (PS2KbdState *)dev; InputKeyEvent *key = evt->u.key.data; int qcode; uint16_t keycode = 0; int mod; /* do not process events while disabled to prevent stream corruption */ if (!s->scan_enabled) { return; } qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER, NULL); assert(evt->type == INPUT_EVENT_KIND_KEY); qcode = qemu_input_key_value_to_qcode(key->key); mod = ps2_modifier_bit(qcode); trace_ps2_keyboard_event(s, qcode, key->down, mod, s->modifiers, s->scancode_set, s->translate); if (key->down) { s->modifiers |= mod; } else { s->modifiers &= ~mod; } if (s->scancode_set == 1) { if (qcode == Q_KEY_CODE_PAUSE) { if (s->modifiers & (MOD_CTRL_L | MOD_CTRL_R)) { if (key->down) { ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0x46); ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0xc6); } } else { if (key->down) { ps2_put_keycode(s, 0xe1); ps2_put_keycode(s, 0x1d); ps2_put_keycode(s, 0x45); ps2_put_keycode(s, 0xe1); ps2_put_keycode(s, 0x9d); ps2_put_keycode(s, 0xc5); } } } else if (qcode == Q_KEY_CODE_PRINT) { if (s->modifiers & MOD_ALT_L) { if (key->down) { ps2_put_keycode(s, 0xb8); ps2_put_keycode(s, 0x38); ps2_put_keycode(s, 0x54); } else { ps2_put_keycode(s, 0xd4); ps2_put_keycode(s, 0xb8); ps2_put_keycode(s, 0x38); } } else if (s->modifiers & MOD_ALT_R) { if (key->down) { ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0xb8); ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0x38); ps2_put_keycode(s, 0x54); } else { ps2_put_keycode(s, 0xd4); ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0xb8); ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0x38); } } else if (s->modifiers & (MOD_SHIFT_L | MOD_CTRL_L | MOD_SHIFT_R | MOD_CTRL_R)) { if (key->down) { ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0x37); } else { ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0xb7); } } else { if (key->down) { ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0x2a); ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0x37); } else { ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0xb7); ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0xaa); } } } else if ((qcode == Q_KEY_CODE_LANG1 || qcode == Q_KEY_CODE_LANG2) && !key->down) { /* Ignore release for these keys */ } else { if (qcode < qemu_input_map_qcode_to_atset1_len) { keycode = qemu_input_map_qcode_to_atset1[qcode]; } if (keycode) { if (keycode & 0xff00) { ps2_put_keycode(s, keycode >> 8); } if (!key->down) { keycode |= 0x80; } ps2_put_keycode(s, keycode & 0xff); } else { qemu_log_mask(LOG_UNIMP, "ps2: ignoring key with qcode %d\n", qcode); } } } else if (s->scancode_set == 2) { if (qcode == Q_KEY_CODE_PAUSE) { if (s->modifiers & (MOD_CTRL_L | MOD_CTRL_R)) { if (key->down) { ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0x7e); ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0xf0); ps2_put_keycode(s, 0x7e); } } else { if (key->down) { ps2_put_keycode(s, 0xe1); ps2_put_keycode(s, 0x14); ps2_put_keycode(s, 0x77); ps2_put_keycode(s, 0xe1); ps2_put_keycode(s, 0xf0); ps2_put_keycode(s, 0x14); ps2_put_keycode(s, 0xf0); ps2_put_keycode(s, 0x77); } } } else if (qcode == Q_KEY_CODE_PRINT) { if (s->modifiers & MOD_ALT_L) { if (key->down) { ps2_put_keycode(s, 0xf0); ps2_put_keycode(s, 0x11); ps2_put_keycode(s, 0x11); ps2_put_keycode(s, 0x84); } else { ps2_put_keycode(s, 0xf0); ps2_put_keycode(s, 0x84); ps2_put_keycode(s, 0xf0); ps2_put_keycode(s, 0x11); ps2_put_keycode(s, 0x11); } } else if (s->modifiers & MOD_ALT_R) { if (key->down) { ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0xf0); ps2_put_keycode(s, 0x11); ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0x11); ps2_put_keycode(s, 0x84); } else { ps2_put_keycode(s, 0xf0); ps2_put_keycode(s, 0x84); ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0xf0); ps2_put_keycode(s, 0x11); ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0x11); } } else if (s->modifiers & (MOD_SHIFT_L | MOD_CTRL_L | MOD_SHIFT_R | MOD_CTRL_R)) { if (key->down) { ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0x7c); } else { ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0xf0); ps2_put_keycode(s, 0x7c); } } else { if (key->down) { ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0x12); ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0x7c); } else { ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0xf0); ps2_put_keycode(s, 0x7c); ps2_put_keycode(s, 0xe0); ps2_put_keycode(s, 0xf0); ps2_put_keycode(s, 0x12); } } } else if ((qcode == Q_KEY_CODE_LANG1 || qcode == Q_KEY_CODE_LANG2) && !key->down) { /* Ignore release for these keys */ } else { if (qcode < qemu_input_map_qcode_to_atset2_len) { keycode = qemu_input_map_qcode_to_atset2[qcode]; } if (keycode) { if (keycode & 0xff00) { ps2_put_keycode(s, keycode >> 8); } if (!key->down) { ps2_put_keycode(s, 0xf0); } ps2_put_keycode(s, keycode & 0xff); } else { qemu_log_mask(LOG_UNIMP, "ps2: ignoring key with qcode %d\n", qcode); } } } else if (s->scancode_set == 3) { if (qcode < qemu_input_map_qcode_to_atset3_len) { keycode = qemu_input_map_qcode_to_atset3[qcode]; } if (keycode) { /* FIXME: break code should be configured on a key by key basis */ if (!key->down) { ps2_put_keycode(s, 0xf0); } ps2_put_keycode(s, keycode); } else { qemu_log_mask(LOG_UNIMP, "ps2: ignoring key with qcode %d\n", qcode); } } } uint32_t ps2_read_data(PS2State *s) { PS2Queue *q; int val, index; trace_ps2_read_data(s); q = &s->queue; if (q->count == 0) { /* * NOTE: if no data left, we return the last keyboard one * (needed for EMM386) */ /* XXX: need a timer to do things correctly */ index = q->rptr - 1; if (index < 0) { index = PS2_BUFFER_SIZE - 1; } val = q->data[index]; } else { val = q->data[q->rptr]; if (++q->rptr == PS2_BUFFER_SIZE) { q->rptr = 0; } q->count--; if (q->rptr == q->cwptr) { /* command reply queue is empty */ q->cwptr = -1; } /* reading deasserts IRQ */ ps2_lower_irq(s); /* reassert IRQs if data left */ if (q->count) { ps2_raise_irq(s); } } return val; } static void ps2_set_ledstate(PS2KbdState *s, int ledstate) { trace_ps2_set_ledstate(s, ledstate); s->ledstate = ledstate; kbd_put_ledstate(ledstate); } static void ps2_reset_keyboard(PS2KbdState *s) { PS2State *ps2 = PS2_DEVICE(s); trace_ps2_reset_keyboard(s); s->scan_enabled = 1; s->scancode_set = 2; ps2_reset_queue(ps2); ps2_set_ledstate(s, 0); } void ps2_write_keyboard(PS2KbdState *s, int val) { PS2State *ps2 = PS2_DEVICE(s); trace_ps2_write_keyboard(s, val); ps2_cqueue_reset(ps2); switch (ps2->write_cmd) { default: case -1: switch (val) { case 0x00: ps2_cqueue_1(ps2, KBD_REPLY_ACK); break; case 0x05: ps2_cqueue_1(ps2, KBD_REPLY_RESEND); break; case KBD_CMD_GET_ID: /* We emulate a MF2 AT keyboard here */ ps2_cqueue_3(ps2, KBD_REPLY_ACK, KBD_REPLY_ID, s->translate ? 0x41 : 0x83); break; case KBD_CMD_ECHO: ps2_cqueue_1(ps2, KBD_CMD_ECHO); break; case KBD_CMD_ENABLE: s->scan_enabled = 1; ps2_cqueue_1(ps2, KBD_REPLY_ACK); break; case KBD_CMD_SCANCODE: case KBD_CMD_SET_LEDS: case KBD_CMD_SET_RATE: case KBD_CMD_SET_MAKE_BREAK: ps2->write_cmd = val; ps2_cqueue_1(ps2, KBD_REPLY_ACK); break; case KBD_CMD_RESET_DISABLE: ps2_reset_keyboard(s); s->scan_enabled = 0; ps2_cqueue_1(ps2, KBD_REPLY_ACK); break; case KBD_CMD_RESET_ENABLE: ps2_reset_keyboard(s); s->scan_enabled = 1; ps2_cqueue_1(ps2, KBD_REPLY_ACK); break; case KBD_CMD_RESET: ps2_reset_keyboard(s); ps2_cqueue_2(ps2, KBD_REPLY_ACK, KBD_REPLY_POR); break; case KBD_CMD_SET_TYPEMATIC: ps2_cqueue_1(ps2, KBD_REPLY_ACK); break; default: ps2_cqueue_1(ps2, KBD_REPLY_RESEND); break; } break; case KBD_CMD_SET_MAKE_BREAK: ps2_cqueue_1(ps2, KBD_REPLY_ACK); ps2->write_cmd = -1; break; case KBD_CMD_SCANCODE: if (val == 0) { ps2_cqueue_2(ps2, KBD_REPLY_ACK, s->translate ? translate_table[s->scancode_set] : s->scancode_set); } else if (val >= 1 && val <= 3) { s->scancode_set = val; ps2_cqueue_1(ps2, KBD_REPLY_ACK); } else { ps2_cqueue_1(ps2, KBD_REPLY_RESEND); } ps2->write_cmd = -1; break; case KBD_CMD_SET_LEDS: ps2_set_ledstate(s, val); ps2_cqueue_1(ps2, KBD_REPLY_ACK); ps2->write_cmd = -1; break; case KBD_CMD_SET_RATE: ps2_cqueue_1(ps2, KBD_REPLY_ACK); ps2->write_cmd = -1; break; } } /* * Set the scancode translation mode. * 0 = raw scancodes. * 1 = translated scancodes (used by qemu internally). */ void ps2_keyboard_set_translation(PS2KbdState *s, int mode) { trace_ps2_keyboard_set_translation(s, mode); s->translate = mode; } static int ps2_mouse_send_packet(PS2MouseState *s) { PS2State *ps2 = PS2_DEVICE(s); /* IMPS/2 and IMEX send 4 bytes, PS2 sends 3 bytes */ const int needed = s->mouse_type ? 4 : 3; unsigned int b; int dx1, dy1, dz1, dw1; if (PS2_QUEUE_SIZE - ps2->queue.count < needed) { return 0; } dx1 = s->mouse_dx; dy1 = s->mouse_dy; dz1 = s->mouse_dz; dw1 = s->mouse_dw; /* XXX: increase range to 8 bits ? */ if (dx1 > 127) { dx1 = 127; } else if (dx1 < -127) { dx1 = -127; } if (dy1 > 127) { dy1 = 127; } else if (dy1 < -127) { dy1 = -127; } b = 0x08 | ((dx1 < 0) << 4) | ((dy1 < 0) << 5) | (s->mouse_buttons & 0x07); ps2_queue_noirq(ps2, b); ps2_queue_noirq(ps2, dx1 & 0xff); ps2_queue_noirq(ps2, dy1 & 0xff); /* extra byte for IMPS/2 or IMEX */ switch (s->mouse_type) { default: /* Just ignore the wheels if not supported */ s->mouse_dz = 0; s->mouse_dw = 0; break; case 3: if (dz1 > 127) { dz1 = 127; } else if (dz1 < -127) { dz1 = -127; } ps2_queue_noirq(ps2, dz1 & 0xff); s->mouse_dz -= dz1; s->mouse_dw = 0; break; case 4: /* * This matches what the Linux kernel expects for exps/2 in * drivers/input/mouse/psmouse-base.c. Note, if you happen to * press/release the 4th or 5th buttons at the same moment as a * horizontal wheel scroll, those button presses will get lost. I'm not * sure what to do about that, since by this point we don't know * whether those buttons actually changed state. */ if (dw1 != 0) { if (dw1 > 31) { dw1 = 31; } else if (dw1 < -31) { dw1 = -31; } /* * linux kernel expects first 6 bits to represent the value * for horizontal scroll */ b = (dw1 & 0x3f) | 0x40; s->mouse_dw -= dw1; } else { if (dz1 > 7) { dz1 = 7; } else if (dz1 < -7) { dz1 = -7; } b = (dz1 & 0x0f) | ((s->mouse_buttons & 0x18) << 1); s->mouse_dz -= dz1; } ps2_queue_noirq(ps2, b); break; } ps2_raise_irq(ps2); trace_ps2_mouse_send_packet(s, dx1, dy1, dz1, b); /* update deltas */ s->mouse_dx -= dx1; s->mouse_dy -= dy1; return 1; } static void ps2_mouse_event(DeviceState *dev, QemuConsole *src, InputEvent *evt) { static const int bmap[INPUT_BUTTON__MAX] = { [INPUT_BUTTON_LEFT] = PS2_MOUSE_BUTTON_LEFT, [INPUT_BUTTON_MIDDLE] = PS2_MOUSE_BUTTON_MIDDLE, [INPUT_BUTTON_RIGHT] = PS2_MOUSE_BUTTON_RIGHT, [INPUT_BUTTON_SIDE] = PS2_MOUSE_BUTTON_SIDE, [INPUT_BUTTON_EXTRA] = PS2_MOUSE_BUTTON_EXTRA, }; PS2MouseState *s = (PS2MouseState *)dev; InputMoveEvent *move; InputBtnEvent *btn; /* check if deltas are recorded when disabled */ if (!(s->mouse_status & MOUSE_STATUS_ENABLED)) { return; } switch (evt->type) { case INPUT_EVENT_KIND_REL: move = evt->u.rel.data; if (move->axis == INPUT_AXIS_X) { s->mouse_dx += move->value; } else if (move->axis == INPUT_AXIS_Y) { s->mouse_dy -= move->value; } break; case INPUT_EVENT_KIND_BTN: btn = evt->u.btn.data; if (btn->down) { s->mouse_buttons |= bmap[btn->button]; if (btn->button == INPUT_BUTTON_WHEEL_UP) { s->mouse_dz--; } else if (btn->button == INPUT_BUTTON_WHEEL_DOWN) { s->mouse_dz++; } if (btn->button == INPUT_BUTTON_WHEEL_RIGHT) { s->mouse_dw--; } else if (btn->button == INPUT_BUTTON_WHEEL_LEFT) { s->mouse_dw++; } } else { s->mouse_buttons &= ~bmap[btn->button]; } break; default: /* keep gcc happy */ break; } } static void ps2_mouse_sync(DeviceState *dev) { PS2MouseState *s = (PS2MouseState *)dev; /* do not sync while disabled to prevent stream corruption */ if (!(s->mouse_status & MOUSE_STATUS_ENABLED)) { return; } if (s->mouse_buttons) { qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER, NULL); } if (!(s->mouse_status & MOUSE_STATUS_REMOTE)) { /* * if not remote, send event. Multiple events are sent if * too big deltas */ while (ps2_mouse_send_packet(s)) { if (s->mouse_dx == 0 && s->mouse_dy == 0 && s->mouse_dz == 0 && s->mouse_dw == 0) { break; } } } } void ps2_mouse_fake_event(PS2MouseState *s) { trace_ps2_mouse_fake_event(s); s->mouse_dx++; ps2_mouse_sync(DEVICE(s)); } void ps2_write_mouse(PS2MouseState *s, int val) { PS2State *ps2 = PS2_DEVICE(s); trace_ps2_write_mouse(s, val); switch (ps2->write_cmd) { default: case -1: /* mouse command */ if (s->mouse_wrap) { if (val == AUX_RESET_WRAP) { s->mouse_wrap = 0; ps2_queue(ps2, AUX_ACK); return; } else if (val != AUX_RESET) { ps2_queue(ps2, val); return; } } switch (val) { case AUX_SET_SCALE11: s->mouse_status &= ~MOUSE_STATUS_SCALE21; ps2_queue(ps2, AUX_ACK); break; case AUX_SET_SCALE21: s->mouse_status |= MOUSE_STATUS_SCALE21; ps2_queue(ps2, AUX_ACK); break; case AUX_SET_STREAM: s->mouse_status &= ~MOUSE_STATUS_REMOTE; ps2_queue(ps2, AUX_ACK); break; case AUX_SET_WRAP: s->mouse_wrap = 1; ps2_queue(ps2, AUX_ACK); break; case AUX_SET_REMOTE: s->mouse_status |= MOUSE_STATUS_REMOTE; ps2_queue(ps2, AUX_ACK); break; case AUX_GET_TYPE: ps2_queue_2(ps2, AUX_ACK, s->mouse_type); break; case AUX_SET_RES: case AUX_SET_SAMPLE: ps2->write_cmd = val; ps2_queue(ps2, AUX_ACK); break; case AUX_GET_SCALE: ps2_queue_4(ps2, AUX_ACK, s->mouse_status, s->mouse_resolution, s->mouse_sample_rate); break; case AUX_POLL: ps2_queue(ps2, AUX_ACK); ps2_mouse_send_packet(s); break; case AUX_ENABLE_DEV: s->mouse_status |= MOUSE_STATUS_ENABLED; ps2_queue(ps2, AUX_ACK); break; case AUX_DISABLE_DEV: s->mouse_status &= ~MOUSE_STATUS_ENABLED; ps2_queue(ps2, AUX_ACK); break; case AUX_SET_DEFAULT: s->mouse_sample_rate = 100; s->mouse_resolution = 2; s->mouse_status = 0; ps2_queue(ps2, AUX_ACK); break; case AUX_RESET: s->mouse_sample_rate = 100; s->mouse_resolution = 2; s->mouse_status = 0; s->mouse_type = 0; ps2_reset_queue(ps2); ps2_queue_3(ps2, AUX_ACK, 0xaa, s->mouse_type); break; default: break; } break; case AUX_SET_SAMPLE: s->mouse_sample_rate = val; /* detect IMPS/2 or IMEX */ switch (s->mouse_detect_state) { default: case 0: if (val == 200) { s->mouse_detect_state = 1; } break; case 1: if (val == 100) { s->mouse_detect_state = 2; } else if (val == 200) { s->mouse_detect_state = 3; } else { s->mouse_detect_state = 0; } break; case 2: if (val == 80) { s->mouse_type = 3; /* IMPS/2 */ } s->mouse_detect_state = 0; break; case 3: if (val == 80) { s->mouse_type = 4; /* IMEX */ } s->mouse_detect_state = 0; break; } ps2_queue(ps2, AUX_ACK); ps2->write_cmd = -1; break; case AUX_SET_RES: s->mouse_resolution = val; ps2_queue(ps2, AUX_ACK); ps2->write_cmd = -1; break; } } static void ps2_reset_hold(Object *obj) { PS2State *s = PS2_DEVICE(obj); s->write_cmd = -1; ps2_reset_queue(s); } static void ps2_reset_exit(Object *obj) { PS2State *s = PS2_DEVICE(obj); ps2_lower_irq(s); } static void ps2_common_post_load(PS2State *s) { PS2Queue *q = &s->queue; int ccount = 0; /* limit the number of queued command replies to PS2_QUEUE_HEADROOM */ if (q->cwptr != -1) { ccount = (q->cwptr - q->rptr) & (PS2_BUFFER_SIZE - 1); if (ccount > PS2_QUEUE_HEADROOM) { ccount = PS2_QUEUE_HEADROOM; } } /* limit the scancode queue size to PS2_QUEUE_SIZE */ if (q->count < ccount) { q->count = ccount; } else if (q->count > ccount + PS2_QUEUE_SIZE) { q->count = ccount + PS2_QUEUE_SIZE; } /* sanitize rptr and recalculate wptr and cwptr */ q->rptr = q->rptr & (PS2_BUFFER_SIZE - 1); q->wptr = (q->rptr + q->count) & (PS2_BUFFER_SIZE - 1); q->cwptr = ccount ? (q->rptr + ccount) & (PS2_BUFFER_SIZE - 1) : -1; } static void ps2_kbd_reset_hold(Object *obj) { PS2DeviceClass *ps2dc = PS2_DEVICE_GET_CLASS(obj); PS2KbdState *s = PS2_KBD_DEVICE(obj); trace_ps2_kbd_reset(s); if (ps2dc->parent_phases.hold) { ps2dc->parent_phases.hold(obj); } s->scan_enabled = 1; s->translate = 0; s->scancode_set = 2; s->modifiers = 0; } static void ps2_mouse_reset_hold(Object *obj) { PS2DeviceClass *ps2dc = PS2_DEVICE_GET_CLASS(obj); PS2MouseState *s = PS2_MOUSE_DEVICE(obj); trace_ps2_mouse_reset(s); if (ps2dc->parent_phases.hold) { ps2dc->parent_phases.hold(obj); } s->mouse_status = 0; s->mouse_resolution = 0; s->mouse_sample_rate = 0; s->mouse_wrap = 0; s->mouse_type = 0; s->mouse_detect_state = 0; s->mouse_dx = 0; s->mouse_dy = 0; s->mouse_dz = 0; s->mouse_dw = 0; s->mouse_buttons = 0; } static const VMStateDescription vmstate_ps2_common = { .name = "PS2 Common State", .version_id = 3, .minimum_version_id = 2, .fields = (const VMStateField[]) { VMSTATE_INT32(write_cmd, PS2State), VMSTATE_INT32(queue.rptr, PS2State), VMSTATE_INT32(queue.wptr, PS2State), VMSTATE_INT32(queue.count, PS2State), VMSTATE_BUFFER(queue.data, PS2State), VMSTATE_END_OF_LIST() } }; static bool ps2_keyboard_ledstate_needed(void *opaque) { PS2KbdState *s = opaque; return s->ledstate != 0; /* 0 is default state */ } static int ps2_kbd_ledstate_post_load(void *opaque, int version_id) { PS2KbdState *s = opaque; kbd_put_ledstate(s->ledstate); return 0; } static const VMStateDescription vmstate_ps2_keyboard_ledstate = { .name = "ps2kbd/ledstate", .version_id = 3, .minimum_version_id = 2, .post_load = ps2_kbd_ledstate_post_load, .needed = ps2_keyboard_ledstate_needed, .fields = (const VMStateField[]) { VMSTATE_INT32(ledstate, PS2KbdState), VMSTATE_END_OF_LIST() } }; static bool ps2_keyboard_need_high_bit_needed(void *opaque) { PS2KbdState *s = opaque; return s->need_high_bit != 0; /* 0 is the usual state */ } static const VMStateDescription vmstate_ps2_keyboard_need_high_bit = { .name = "ps2kbd/need_high_bit", .version_id = 1, .minimum_version_id = 1, .needed = ps2_keyboard_need_high_bit_needed, .fields = (const VMStateField[]) { VMSTATE_BOOL(need_high_bit, PS2KbdState), VMSTATE_END_OF_LIST() } }; static bool ps2_keyboard_cqueue_needed(void *opaque) { PS2KbdState *s = opaque; PS2State *ps2 = PS2_DEVICE(s); return ps2->queue.cwptr != -1; /* the queue is mostly empty */ } static const VMStateDescription vmstate_ps2_keyboard_cqueue = { .name = "ps2kbd/command_reply_queue", .needed = ps2_keyboard_cqueue_needed, .fields = (const VMStateField[]) { VMSTATE_INT32(parent_obj.queue.cwptr, PS2KbdState), VMSTATE_END_OF_LIST() } }; static int ps2_kbd_post_load(void *opaque, int version_id) { PS2KbdState *s = (PS2KbdState *)opaque; PS2State *ps2 = PS2_DEVICE(s); if (version_id == 2) { s->scancode_set = 2; } ps2_common_post_load(ps2); return 0; } static const VMStateDescription vmstate_ps2_keyboard = { .name = "ps2kbd", .version_id = 3, .minimum_version_id = 2, .post_load = ps2_kbd_post_load, .fields = (const VMStateField[]) { VMSTATE_STRUCT(parent_obj, PS2KbdState, 0, vmstate_ps2_common, PS2State), VMSTATE_INT32(scan_enabled, PS2KbdState), VMSTATE_INT32(translate, PS2KbdState), VMSTATE_INT32_V(scancode_set, PS2KbdState, 3), VMSTATE_END_OF_LIST() }, .subsections = (const VMStateDescription * const []) { &vmstate_ps2_keyboard_ledstate, &vmstate_ps2_keyboard_need_high_bit, &vmstate_ps2_keyboard_cqueue, NULL } }; static int ps2_mouse_post_load(void *opaque, int version_id) { PS2MouseState *s = (PS2MouseState *)opaque; PS2State *ps2 = PS2_DEVICE(s); ps2_common_post_load(ps2); return 0; } static const VMStateDescription vmstate_ps2_mouse = { .name = "ps2mouse", .version_id = 2, .minimum_version_id = 2, .post_load = ps2_mouse_post_load, .fields = (const VMStateField[]) { VMSTATE_STRUCT(parent_obj, PS2MouseState, 0, vmstate_ps2_common, PS2State), VMSTATE_UINT8(mouse_status, PS2MouseState), VMSTATE_UINT8(mouse_resolution, PS2MouseState), VMSTATE_UINT8(mouse_sample_rate, PS2MouseState), VMSTATE_UINT8(mouse_wrap, PS2MouseState), VMSTATE_UINT8(mouse_type, PS2MouseState), VMSTATE_UINT8(mouse_detect_state, PS2MouseState), VMSTATE_INT32(mouse_dx, PS2MouseState), VMSTATE_INT32(mouse_dy, PS2MouseState), VMSTATE_INT32(mouse_dz, PS2MouseState), VMSTATE_UINT8(mouse_buttons, PS2MouseState), VMSTATE_END_OF_LIST() } }; static const QemuInputHandler ps2_keyboard_handler = { .name = "QEMU PS/2 Keyboard", .mask = INPUT_EVENT_MASK_KEY, .event = ps2_keyboard_event, }; static void ps2_kbd_realize(DeviceState *dev, Error **errp) { qemu_input_handler_register(dev, &ps2_keyboard_handler); } static const QemuInputHandler ps2_mouse_handler = { .name = "QEMU PS/2 Mouse", .mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_REL, .event = ps2_mouse_event, .sync = ps2_mouse_sync, }; static void ps2_mouse_realize(DeviceState *dev, Error **errp) { qemu_input_handler_register(dev, &ps2_mouse_handler); } static void ps2_kbd_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); ResettableClass *rc = RESETTABLE_CLASS(klass); PS2DeviceClass *ps2dc = PS2_DEVICE_CLASS(klass); dc->realize = ps2_kbd_realize; resettable_class_set_parent_phases(rc, NULL, ps2_kbd_reset_hold, NULL, &ps2dc->parent_phases); dc->vmsd = &vmstate_ps2_keyboard; } static const TypeInfo ps2_kbd_info = { .name = TYPE_PS2_KBD_DEVICE, .parent = TYPE_PS2_DEVICE, .instance_size = sizeof(PS2KbdState), .class_init = ps2_kbd_class_init }; static void ps2_mouse_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); ResettableClass *rc = RESETTABLE_CLASS(klass); PS2DeviceClass *ps2dc = PS2_DEVICE_CLASS(klass); dc->realize = ps2_mouse_realize; resettable_class_set_parent_phases(rc, NULL, ps2_mouse_reset_hold, NULL, &ps2dc->parent_phases); dc->vmsd = &vmstate_ps2_mouse; } static const TypeInfo ps2_mouse_info = { .name = TYPE_PS2_MOUSE_DEVICE, .parent = TYPE_PS2_DEVICE, .instance_size = sizeof(PS2MouseState), .class_init = ps2_mouse_class_init }; static void ps2_init(Object *obj) { PS2State *s = PS2_DEVICE(obj); qdev_init_gpio_out(DEVICE(obj), &s->irq, 1); } static void ps2_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); ResettableClass *rc = RESETTABLE_CLASS(klass); rc->phases.hold = ps2_reset_hold; rc->phases.exit = ps2_reset_exit; set_bit(DEVICE_CATEGORY_INPUT, dc->categories); } static const TypeInfo ps2_info = { .name = TYPE_PS2_DEVICE, .parent = TYPE_SYS_BUS_DEVICE, .instance_init = ps2_init, .instance_size = sizeof(PS2State), .class_init = ps2_class_init, .class_size = sizeof(PS2DeviceClass), .abstract = true }; static void ps2_register_types(void) { type_register_static(&ps2_info); type_register_static(&ps2_kbd_info); type_register_static(&ps2_mouse_info); } type_init(ps2_register_types)