root / hw / pckbd.c @ 289e09e7
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/*
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* QEMU PC keyboard emulation
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "vl.h" |
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/* debug PC keyboard */
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//#define DEBUG_KBD
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/* debug PC keyboard : only mouse */
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//#define DEBUG_MOUSE
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/* Keyboard Controller Commands */
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#define KBD_CCMD_READ_MODE 0x20 /* Read mode bits */ |
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#define KBD_CCMD_WRITE_MODE 0x60 /* Write mode bits */ |
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#define KBD_CCMD_GET_VERSION 0xA1 /* Get controller version */ |
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#define KBD_CCMD_MOUSE_DISABLE 0xA7 /* Disable mouse interface */ |
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#define KBD_CCMD_MOUSE_ENABLE 0xA8 /* Enable mouse interface */ |
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#define KBD_CCMD_TEST_MOUSE 0xA9 /* Mouse interface test */ |
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#define KBD_CCMD_SELF_TEST 0xAA /* Controller self test */ |
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#define KBD_CCMD_KBD_TEST 0xAB /* Keyboard interface test */ |
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#define KBD_CCMD_KBD_DISABLE 0xAD /* Keyboard interface disable */ |
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#define KBD_CCMD_KBD_ENABLE 0xAE /* Keyboard interface enable */ |
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#define KBD_CCMD_READ_INPORT 0xC0 /* read input port */ |
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#define KBD_CCMD_READ_OUTPORT 0xD0 /* read output port */ |
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#define KBD_CCMD_WRITE_OUTPORT 0xD1 /* write output port */ |
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#define KBD_CCMD_WRITE_OBUF 0xD2 |
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#define KBD_CCMD_WRITE_AUX_OBUF 0xD3 /* Write to output buffer as if |
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initiated by the auxiliary device */
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#define KBD_CCMD_WRITE_MOUSE 0xD4 /* Write the following byte to the mouse */ |
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#define KBD_CCMD_DISABLE_A20 0xDD /* HP vectra only ? */ |
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#define KBD_CCMD_ENABLE_A20 0xDF /* HP vectra only ? */ |
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#define KBD_CCMD_RESET 0xFE |
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/* Keyboard Commands */
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#define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */ |
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#define KBD_CMD_ECHO 0xEE |
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#define KBD_CMD_GET_ID 0xF2 /* get keyboard ID */ |
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#define KBD_CMD_SET_RATE 0xF3 /* Set typematic rate */ |
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#define KBD_CMD_ENABLE 0xF4 /* Enable scanning */ |
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#define KBD_CMD_RESET_DISABLE 0xF5 /* reset and disable scanning */ |
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#define KBD_CMD_RESET_ENABLE 0xF6 /* reset and enable scanning */ |
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#define KBD_CMD_RESET 0xFF /* Reset */ |
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|
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/* Keyboard Replies */
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#define KBD_REPLY_POR 0xAA /* Power on reset */ |
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#define KBD_REPLY_ACK 0xFA /* Command ACK */ |
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#define KBD_REPLY_RESEND 0xFE /* Command NACK, send the cmd again */ |
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/* Status Register Bits */
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#define KBD_STAT_OBF 0x01 /* Keyboard output buffer full */ |
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#define KBD_STAT_IBF 0x02 /* Keyboard input buffer full */ |
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#define KBD_STAT_SELFTEST 0x04 /* Self test successful */ |
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#define KBD_STAT_CMD 0x08 /* Last write was a command write (0=data) */ |
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#define KBD_STAT_UNLOCKED 0x10 /* Zero if keyboard locked */ |
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#define KBD_STAT_MOUSE_OBF 0x20 /* Mouse output buffer full */ |
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#define KBD_STAT_GTO 0x40 /* General receive/xmit timeout */ |
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#define KBD_STAT_PERR 0x80 /* Parity error */ |
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/* Controller Mode Register Bits */
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#define KBD_MODE_KBD_INT 0x01 /* Keyboard data generate IRQ1 */ |
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#define KBD_MODE_MOUSE_INT 0x02 /* Mouse data generate IRQ12 */ |
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#define KBD_MODE_SYS 0x04 /* The system flag (?) */ |
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#define KBD_MODE_NO_KEYLOCK 0x08 /* The keylock doesn't affect the keyboard if set */ |
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#define KBD_MODE_DISABLE_KBD 0x10 /* Disable keyboard interface */ |
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#define KBD_MODE_DISABLE_MOUSE 0x20 /* Disable mouse interface */ |
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#define KBD_MODE_KCC 0x40 /* Scan code conversion to PC format */ |
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#define KBD_MODE_RFU 0x80 |
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/* Mouse Commands */
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#define AUX_SET_SCALE11 0xE6 /* Set 1:1 scaling */ |
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#define AUX_SET_SCALE21 0xE7 /* Set 2:1 scaling */ |
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#define AUX_SET_RES 0xE8 /* Set resolution */ |
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#define AUX_GET_SCALE 0xE9 /* Get scaling factor */ |
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#define AUX_SET_STREAM 0xEA /* Set stream mode */ |
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#define AUX_POLL 0xEB /* Poll */ |
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#define AUX_RESET_WRAP 0xEC /* Reset wrap mode */ |
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#define AUX_SET_WRAP 0xEE /* Set wrap mode */ |
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#define AUX_SET_REMOTE 0xF0 /* Set remote mode */ |
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#define AUX_GET_TYPE 0xF2 /* Get type */ |
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#define AUX_SET_SAMPLE 0xF3 /* Set sample rate */ |
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#define AUX_ENABLE_DEV 0xF4 /* Enable aux device */ |
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#define AUX_DISABLE_DEV 0xF5 /* Disable aux device */ |
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#define AUX_SET_DEFAULT 0xF6 |
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#define AUX_RESET 0xFF /* Reset aux device */ |
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#define AUX_ACK 0xFA /* Command byte ACK. */ |
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#define MOUSE_STATUS_REMOTE 0x40 |
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#define MOUSE_STATUS_ENABLED 0x20 |
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#define MOUSE_STATUS_SCALE21 0x10 |
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#define KBD_QUEUE_SIZE 256 |
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typedef struct { |
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uint8_t data[KBD_QUEUE_SIZE]; |
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int rptr, wptr, count;
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} KBDQueue; |
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typedef struct KBDState { |
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KBDQueue queues[2];
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uint8_t write_cmd; /* if non zero, write data to port 60 is expected */
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uint8_t status; |
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uint8_t mode; |
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/* keyboard state */
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int kbd_write_cmd;
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int scan_enabled;
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/* mouse state */
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int mouse_write_cmd;
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uint8_t mouse_status; |
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uint8_t mouse_resolution; |
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uint8_t mouse_sample_rate; |
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uint8_t mouse_wrap; |
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uint8_t mouse_type; /* 0 = PS2, 3 = IMPS/2, 4 = IMEX */
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uint8_t mouse_detect_state; |
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int mouse_dx; /* current values, needed for 'poll' mode */ |
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int mouse_dy;
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int mouse_dz;
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uint8_t mouse_buttons; |
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} KBDState; |
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KBDState kbd_state; |
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int reset_requested;
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/* update irq and KBD_STAT_[MOUSE_]OBF */
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/* XXX: not generating the irqs if KBD_MODE_DISABLE_KBD is set may be
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incorrect, but it avoids having to simulate exact delays */
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static void kbd_update_irq(KBDState *s) |
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{ |
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int irq12_level, irq1_level;
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irq1_level = 0;
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irq12_level = 0;
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s->status &= ~(KBD_STAT_OBF | KBD_STAT_MOUSE_OBF); |
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if (s->queues[0].count != 0 || |
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s->queues[1].count != 0) { |
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s->status |= KBD_STAT_OBF; |
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if (s->queues[1].count != 0) { |
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s->status |= KBD_STAT_MOUSE_OBF; |
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if (s->mode & KBD_MODE_MOUSE_INT)
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irq12_level = 1;
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} else {
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if ((s->mode & KBD_MODE_KBD_INT) &&
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!(s->mode & KBD_MODE_DISABLE_KBD)) |
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irq1_level = 1;
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} |
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} |
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pic_set_irq(1, irq1_level);
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pic_set_irq(12, irq12_level);
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} |
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static void kbd_queue(KBDState *s, int b, int aux) |
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{ |
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KBDQueue *q = &s->queues[aux]; |
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#if defined(DEBUG_MOUSE) || defined(DEBUG_KBD)
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if (aux)
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printf("mouse event: 0x%02x\n", b);
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#ifdef DEBUG_KBD
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else
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printf("kbd event: 0x%02x\n", b);
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#endif
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#endif
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if (q->count >= KBD_QUEUE_SIZE)
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return;
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q->data[q->wptr] = b; |
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if (++q->wptr == KBD_QUEUE_SIZE)
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q->wptr = 0;
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q->count++; |
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kbd_update_irq(s); |
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} |
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void kbd_put_keycode(int keycode) |
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{ |
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KBDState *s = &kbd_state; |
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kbd_queue(s, keycode, 0);
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} |
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static uint32_t kbd_read_status(void *opaque, uint32_t addr) |
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{ |
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KBDState *s = opaque; |
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int val;
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val = s->status; |
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#if defined(DEBUG_KBD)
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printf("kbd: read status=0x%02x\n", val);
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#endif
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return val;
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} |
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static void kbd_write_command(void *opaque, uint32_t addr, uint32_t val) |
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{ |
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KBDState *s = opaque; |
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#ifdef DEBUG_KBD
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printf("kbd: write cmd=0x%02x\n", val);
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#endif
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switch(val) {
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case KBD_CCMD_READ_MODE:
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kbd_queue(s, s->mode, 0);
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break;
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case KBD_CCMD_WRITE_MODE:
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case KBD_CCMD_WRITE_OBUF:
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case KBD_CCMD_WRITE_AUX_OBUF:
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case KBD_CCMD_WRITE_MOUSE:
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case KBD_CCMD_WRITE_OUTPORT:
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s->write_cmd = val; |
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break;
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case KBD_CCMD_MOUSE_DISABLE:
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s->mode |= KBD_MODE_DISABLE_MOUSE; |
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break;
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case KBD_CCMD_MOUSE_ENABLE:
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s->mode &= ~KBD_MODE_DISABLE_MOUSE; |
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break;
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case KBD_CCMD_TEST_MOUSE:
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kbd_queue(s, 0x00, 0); |
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break;
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case KBD_CCMD_SELF_TEST:
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s->status |= KBD_STAT_SELFTEST; |
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kbd_queue(s, 0x55, 0); |
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break;
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case KBD_CCMD_KBD_TEST:
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kbd_queue(s, 0x00, 0); |
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break;
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case KBD_CCMD_KBD_DISABLE:
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s->mode |= KBD_MODE_DISABLE_KBD; |
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kbd_update_irq(s); |
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break;
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case KBD_CCMD_KBD_ENABLE:
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s->mode &= ~KBD_MODE_DISABLE_KBD; |
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kbd_update_irq(s); |
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break;
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case KBD_CCMD_READ_INPORT:
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kbd_queue(s, 0x00, 0); |
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break;
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case KBD_CCMD_READ_OUTPORT:
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/* XXX: check that */
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#ifdef TARGET_I386
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val = 0x01 | (((cpu_single_env->a20_mask >> 20) & 1) << 1); |
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#else
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val = 0x01;
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#endif
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if (s->status & KBD_STAT_OBF)
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val |= 0x10;
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if (s->status & KBD_STAT_MOUSE_OBF)
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val |= 0x20;
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kbd_queue(s, val, 0);
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break;
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#ifdef TARGET_I386
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case KBD_CCMD_ENABLE_A20:
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cpu_x86_set_a20(cpu_single_env, 1);
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break;
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case KBD_CCMD_DISABLE_A20:
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cpu_x86_set_a20(cpu_single_env, 0);
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break;
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#endif
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case KBD_CCMD_RESET:
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reset_requested = 1;
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cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT); |
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break;
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case 0xff: |
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/* ignore that - I don't know what is its use */
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break;
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default:
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fprintf(stderr, "qemu: unsupported keyboard cmd=0x%02x\n", val);
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break;
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} |
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} |
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static uint32_t kbd_read_data(void *opaque, uint32_t addr) |
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{ |
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KBDState *s = opaque; |
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KBDQueue *q; |
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int val, index;
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q = &s->queues[1]; /* first check AUX data */ |
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if (q->count == 0) |
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q = &s->queues[0]; /* then check KBD data */ |
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if (q->count == 0) { |
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/* NOTE: if no data left, we return the last keyboard one
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(needed for EMM386) */
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/* XXX: need a timer to do things correctly */
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q = &s->queues[0];
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index = q->rptr - 1;
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if (index < 0) |
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index = KBD_QUEUE_SIZE - 1;
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val = q->data[index]; |
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} else {
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val = q->data[q->rptr]; |
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if (++q->rptr == KBD_QUEUE_SIZE)
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q->rptr = 0;
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q->count--; |
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/* reading deasserts IRQ */
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if (q == &s->queues[0]) |
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pic_set_irq(1, 0); |
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else
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pic_set_irq(12, 0); |
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} |
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/* reassert IRQs if data left */
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kbd_update_irq(s); |
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#ifdef DEBUG_KBD
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printf("kbd: read data=0x%02x\n", val);
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#endif
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return val;
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} |
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static void kbd_reset_keyboard(KBDState *s) |
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{ |
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s->scan_enabled = 1;
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} |
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|
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static void kbd_write_keyboard(KBDState *s, int val) |
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{ |
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switch(s->kbd_write_cmd) {
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default:
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case -1: |
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switch(val) {
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case 0x00: |
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kbd_queue(s, KBD_REPLY_ACK, 0);
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break;
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case 0x05: |
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kbd_queue(s, KBD_REPLY_RESEND, 0);
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break;
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case KBD_CMD_GET_ID:
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kbd_queue(s, KBD_REPLY_ACK, 0);
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kbd_queue(s, 0xab, 0); |
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kbd_queue(s, 0x83, 0); |
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break;
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case KBD_CMD_ECHO:
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kbd_queue(s, KBD_CMD_ECHO, 0);
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break;
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case KBD_CMD_ENABLE:
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s->scan_enabled = 1;
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kbd_queue(s, KBD_REPLY_ACK, 0);
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break;
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case KBD_CMD_SET_LEDS:
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case KBD_CMD_SET_RATE:
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s->kbd_write_cmd = val; |
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kbd_queue(s, KBD_REPLY_ACK, 0);
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break;
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case KBD_CMD_RESET_DISABLE:
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kbd_reset_keyboard(s); |
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s->scan_enabled = 0;
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kbd_queue(s, KBD_REPLY_ACK, 0);
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break;
|
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case KBD_CMD_RESET_ENABLE:
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kbd_reset_keyboard(s); |
365 |
s->scan_enabled = 1;
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kbd_queue(s, KBD_REPLY_ACK, 0);
|
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break;
|
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case KBD_CMD_RESET:
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kbd_reset_keyboard(s); |
370 |
kbd_queue(s, KBD_REPLY_ACK, 0);
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kbd_queue(s, KBD_REPLY_POR, 0);
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break;
|
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default:
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kbd_queue(s, KBD_REPLY_ACK, 0);
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break;
|
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} |
377 |
break;
|
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case KBD_CMD_SET_LEDS:
|
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kbd_queue(s, KBD_REPLY_ACK, 0);
|
380 |
s->kbd_write_cmd = -1;
|
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break;
|
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case KBD_CMD_SET_RATE:
|
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kbd_queue(s, KBD_REPLY_ACK, 0);
|
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s->kbd_write_cmd = -1;
|
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break;
|
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} |
387 |
} |
388 |
|
389 |
static void kbd_mouse_send_packet(KBDState *s) |
390 |
{ |
391 |
unsigned int b; |
392 |
int dx1, dy1, dz1;
|
393 |
|
394 |
dx1 = s->mouse_dx; |
395 |
dy1 = s->mouse_dy; |
396 |
dz1 = s->mouse_dz; |
397 |
/* XXX: increase range to 8 bits ? */
|
398 |
if (dx1 > 127) |
399 |
dx1 = 127;
|
400 |
else if (dx1 < -127) |
401 |
dx1 = -127;
|
402 |
if (dy1 > 127) |
403 |
dy1 = 127;
|
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else if (dy1 < -127) |
405 |
dy1 = -127;
|
406 |
b = 0x08 | ((dx1 < 0) << 4) | ((dy1 < 0) << 5) | (s->mouse_buttons & 0x07); |
407 |
kbd_queue(s, b, 1);
|
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kbd_queue(s, dx1 & 0xff, 1); |
409 |
kbd_queue(s, dy1 & 0xff, 1); |
410 |
/* extra byte for IMPS/2 or IMEX */
|
411 |
switch(s->mouse_type) {
|
412 |
default:
|
413 |
break;
|
414 |
case 3: |
415 |
if (dz1 > 127) |
416 |
dz1 = 127;
|
417 |
else if (dz1 < -127) |
418 |
dz1 = -127;
|
419 |
kbd_queue(s, dz1 & 0xff, 1); |
420 |
break;
|
421 |
case 4: |
422 |
if (dz1 > 7) |
423 |
dz1 = 7;
|
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else if (dz1 < -7) |
425 |
dz1 = -7;
|
426 |
b = (dz1 & 0x0f) | ((s->mouse_buttons & 0x18) << 1); |
427 |
kbd_queue(s, b, 1);
|
428 |
break;
|
429 |
} |
430 |
|
431 |
/* update deltas */
|
432 |
s->mouse_dx -= dx1; |
433 |
s->mouse_dy -= dy1; |
434 |
s->mouse_dz -= dz1; |
435 |
} |
436 |
|
437 |
void kbd_mouse_event(int dx, int dy, int dz, int buttons_state) |
438 |
{ |
439 |
KBDState *s = &kbd_state; |
440 |
|
441 |
/* check if deltas are recorded when disabled */
|
442 |
if (!(s->mouse_status & MOUSE_STATUS_ENABLED))
|
443 |
return;
|
444 |
|
445 |
s->mouse_dx += dx; |
446 |
s->mouse_dy -= dy; |
447 |
s->mouse_dz += dz; |
448 |
s->mouse_buttons = buttons_state; |
449 |
|
450 |
if (!(s->mouse_status & MOUSE_STATUS_REMOTE) &&
|
451 |
(s->queues[1].count < (KBD_QUEUE_SIZE - 16))) { |
452 |
for(;;) {
|
453 |
/* if not remote, send event. Multiple events are sent if
|
454 |
too big deltas */
|
455 |
kbd_mouse_send_packet(s); |
456 |
if (s->mouse_dx == 0 && s->mouse_dy == 0 && s->mouse_dz == 0) |
457 |
break;
|
458 |
} |
459 |
} |
460 |
} |
461 |
|
462 |
static void kbd_write_mouse(KBDState *s, int val) |
463 |
{ |
464 |
#ifdef DEBUG_MOUSE
|
465 |
printf("kbd: write mouse 0x%02x\n", val);
|
466 |
#endif
|
467 |
switch(s->mouse_write_cmd) {
|
468 |
default:
|
469 |
case -1: |
470 |
/* mouse command */
|
471 |
if (s->mouse_wrap) {
|
472 |
if (val == AUX_RESET_WRAP) {
|
473 |
s->mouse_wrap = 0;
|
474 |
kbd_queue(s, AUX_ACK, 1);
|
475 |
return;
|
476 |
} else if (val != AUX_RESET) { |
477 |
kbd_queue(s, val, 1);
|
478 |
return;
|
479 |
} |
480 |
} |
481 |
switch(val) {
|
482 |
case AUX_SET_SCALE11:
|
483 |
s->mouse_status &= ~MOUSE_STATUS_SCALE21; |
484 |
kbd_queue(s, AUX_ACK, 1);
|
485 |
break;
|
486 |
case AUX_SET_SCALE21:
|
487 |
s->mouse_status |= MOUSE_STATUS_SCALE21; |
488 |
kbd_queue(s, AUX_ACK, 1);
|
489 |
break;
|
490 |
case AUX_SET_STREAM:
|
491 |
s->mouse_status &= ~MOUSE_STATUS_REMOTE; |
492 |
kbd_queue(s, AUX_ACK, 1);
|
493 |
break;
|
494 |
case AUX_SET_WRAP:
|
495 |
s->mouse_wrap = 1;
|
496 |
kbd_queue(s, AUX_ACK, 1);
|
497 |
break;
|
498 |
case AUX_SET_REMOTE:
|
499 |
s->mouse_status |= MOUSE_STATUS_REMOTE; |
500 |
kbd_queue(s, AUX_ACK, 1);
|
501 |
break;
|
502 |
case AUX_GET_TYPE:
|
503 |
kbd_queue(s, AUX_ACK, 1);
|
504 |
kbd_queue(s, s->mouse_type, 1);
|
505 |
break;
|
506 |
case AUX_SET_RES:
|
507 |
case AUX_SET_SAMPLE:
|
508 |
s->mouse_write_cmd = val; |
509 |
kbd_queue(s, AUX_ACK, 1);
|
510 |
break;
|
511 |
case AUX_GET_SCALE:
|
512 |
kbd_queue(s, AUX_ACK, 1);
|
513 |
kbd_queue(s, s->mouse_status, 1);
|
514 |
kbd_queue(s, s->mouse_resolution, 1);
|
515 |
kbd_queue(s, s->mouse_sample_rate, 1);
|
516 |
break;
|
517 |
case AUX_POLL:
|
518 |
kbd_queue(s, AUX_ACK, 1);
|
519 |
kbd_mouse_send_packet(s); |
520 |
break;
|
521 |
case AUX_ENABLE_DEV:
|
522 |
s->mouse_status |= MOUSE_STATUS_ENABLED; |
523 |
kbd_queue(s, AUX_ACK, 1);
|
524 |
break;
|
525 |
case AUX_DISABLE_DEV:
|
526 |
s->mouse_status &= ~MOUSE_STATUS_ENABLED; |
527 |
kbd_queue(s, AUX_ACK, 1);
|
528 |
break;
|
529 |
case AUX_SET_DEFAULT:
|
530 |
s->mouse_sample_rate = 100;
|
531 |
s->mouse_resolution = 2;
|
532 |
s->mouse_status = 0;
|
533 |
kbd_queue(s, AUX_ACK, 1);
|
534 |
break;
|
535 |
case AUX_RESET:
|
536 |
s->mouse_sample_rate = 100;
|
537 |
s->mouse_resolution = 2;
|
538 |
s->mouse_status = 0;
|
539 |
kbd_queue(s, AUX_ACK, 1);
|
540 |
kbd_queue(s, 0xaa, 1); |
541 |
kbd_queue(s, s->mouse_type, 1);
|
542 |
break;
|
543 |
default:
|
544 |
break;
|
545 |
} |
546 |
break;
|
547 |
case AUX_SET_SAMPLE:
|
548 |
s->mouse_sample_rate = val; |
549 |
#if 0
|
550 |
/* detect IMPS/2 or IMEX */
|
551 |
switch(s->mouse_detect_state) {
|
552 |
default:
|
553 |
case 0:
|
554 |
if (val == 200)
|
555 |
s->mouse_detect_state = 1;
|
556 |
break;
|
557 |
case 1:
|
558 |
if (val == 100)
|
559 |
s->mouse_detect_state = 2;
|
560 |
else if (val == 200)
|
561 |
s->mouse_detect_state = 3;
|
562 |
else
|
563 |
s->mouse_detect_state = 0;
|
564 |
break;
|
565 |
case 2:
|
566 |
if (val == 80)
|
567 |
s->mouse_type = 3; /* IMPS/2 */
|
568 |
s->mouse_detect_state = 0;
|
569 |
break;
|
570 |
case 3:
|
571 |
if (val == 80)
|
572 |
s->mouse_type = 4; /* IMEX */
|
573 |
s->mouse_detect_state = 0;
|
574 |
break;
|
575 |
}
|
576 |
#endif
|
577 |
kbd_queue(s, AUX_ACK, 1);
|
578 |
s->mouse_write_cmd = -1;
|
579 |
break;
|
580 |
case AUX_SET_RES:
|
581 |
s->mouse_resolution = val; |
582 |
kbd_queue(s, AUX_ACK, 1);
|
583 |
s->mouse_write_cmd = -1;
|
584 |
break;
|
585 |
} |
586 |
} |
587 |
|
588 |
void kbd_write_data(void *opaque, uint32_t addr, uint32_t val) |
589 |
{ |
590 |
KBDState *s = opaque; |
591 |
|
592 |
#ifdef DEBUG_KBD
|
593 |
printf("kbd: write data=0x%02x\n", val);
|
594 |
#endif
|
595 |
|
596 |
switch(s->write_cmd) {
|
597 |
case 0: |
598 |
kbd_write_keyboard(s, val); |
599 |
break;
|
600 |
case KBD_CCMD_WRITE_MODE:
|
601 |
s->mode = val; |
602 |
kbd_update_irq(s); |
603 |
break;
|
604 |
case KBD_CCMD_WRITE_OBUF:
|
605 |
kbd_queue(s, val, 0);
|
606 |
break;
|
607 |
case KBD_CCMD_WRITE_AUX_OBUF:
|
608 |
kbd_queue(s, val, 1);
|
609 |
break;
|
610 |
case KBD_CCMD_WRITE_OUTPORT:
|
611 |
#ifdef TARGET_I386
|
612 |
cpu_x86_set_a20(cpu_single_env, (val >> 1) & 1); |
613 |
#endif
|
614 |
if (!(val & 1)) { |
615 |
reset_requested = 1;
|
616 |
cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT); |
617 |
} |
618 |
break;
|
619 |
case KBD_CCMD_WRITE_MOUSE:
|
620 |
kbd_write_mouse(s, val); |
621 |
break;
|
622 |
default:
|
623 |
break;
|
624 |
} |
625 |
s->write_cmd = 0;
|
626 |
} |
627 |
|
628 |
void kbd_reset(KBDState *s)
|
629 |
{ |
630 |
KBDQueue *q; |
631 |
int i;
|
632 |
|
633 |
s->kbd_write_cmd = -1;
|
634 |
s->mouse_write_cmd = -1;
|
635 |
s->mode = KBD_MODE_KBD_INT | KBD_MODE_MOUSE_INT; |
636 |
s->status = KBD_STAT_CMD | KBD_STAT_UNLOCKED; |
637 |
for(i = 0; i < 2; i++) { |
638 |
q = &s->queues[i]; |
639 |
q->rptr = 0;
|
640 |
q->wptr = 0;
|
641 |
q->count = 0;
|
642 |
} |
643 |
} |
644 |
|
645 |
void kbd_init(void) |
646 |
{ |
647 |
KBDState *s = &kbd_state; |
648 |
|
649 |
kbd_reset(s); |
650 |
register_ioport_read(0x60, 1, 1, kbd_read_data, s); |
651 |
register_ioport_write(0x60, 1, 1, kbd_write_data, s); |
652 |
register_ioport_read(0x64, 1, 1, kbd_read_status, s); |
653 |
register_ioport_write(0x64, 1, 1, kbd_write_command, s); |
654 |
} |