diff options
Diffstat (limited to 'hw/input/ps2.c')
| -rw-r--r-- | hw/input/ps2.c | 1306 |
1 files changed, 1306 insertions, 0 deletions
diff --git a/hw/input/ps2.c b/hw/input/ps2.c new file mode 100644 index 00000000..05cf7111 --- /dev/null +++ b/hw/input/ps2.c @@ -0,0 +1,1306 @@ +/* + * 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 < 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 < 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(DeviceState *dev) +{ + PS2State *s = PS2_DEVICE(dev); + + s->write_cmd = -1; + ps2_reset_queue(s); + 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(DeviceState *dev) +{ + PS2DeviceClass *ps2dc = PS2_DEVICE_GET_CLASS(dev); + PS2KbdState *s = PS2_KBD_DEVICE(dev); + + trace_ps2_kbd_reset(s); + ps2dc->parent_reset(dev); + + s->scan_enabled = 1; + s->translate = 0; + s->scancode_set = 2; + s->modifiers = 0; +} + +static void ps2_mouse_reset(DeviceState *dev) +{ + PS2DeviceClass *ps2dc = PS2_DEVICE_GET_CLASS(dev); + PS2MouseState *s = PS2_MOUSE_DEVICE(dev); + + trace_ps2_mouse_reset(s); + ps2dc->parent_reset(dev); + + 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 = (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 = (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 = (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 = (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 = (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 * []) { + &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 = (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 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 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); + PS2DeviceClass *ps2dc = PS2_DEVICE_CLASS(klass); + + dc->realize = ps2_kbd_realize; + device_class_set_parent_reset(dc, ps2_kbd_reset, &ps2dc->parent_reset); + 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); + PS2DeviceClass *ps2dc = PS2_DEVICE_CLASS(klass); + + dc->realize = ps2_mouse_realize; + device_class_set_parent_reset(dc, ps2_mouse_reset, + &ps2dc->parent_reset); + 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); + + dc->reset = ps2_reset; + 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) |