| /* |
| * QEMU PC keyboard 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 "vl.h" |
| |
| /* debug PC keyboard */ |
| //#define DEBUG_KBD |
| |
| /* debug PC keyboard : only mouse */ |
| //#define DEBUG_MOUSE |
| |
| /* Keyboard Controller Commands */ |
| #define KBD_CCMD_READ_MODE 0x20 /* Read mode bits */ |
| #define KBD_CCMD_WRITE_MODE 0x60 /* Write mode bits */ |
| #define KBD_CCMD_GET_VERSION 0xA1 /* Get controller version */ |
| #define KBD_CCMD_MOUSE_DISABLE 0xA7 /* Disable mouse interface */ |
| #define KBD_CCMD_MOUSE_ENABLE 0xA8 /* Enable mouse interface */ |
| #define KBD_CCMD_TEST_MOUSE 0xA9 /* Mouse interface test */ |
| #define KBD_CCMD_SELF_TEST 0xAA /* Controller self test */ |
| #define KBD_CCMD_KBD_TEST 0xAB /* Keyboard interface test */ |
| #define KBD_CCMD_KBD_DISABLE 0xAD /* Keyboard interface disable */ |
| #define KBD_CCMD_KBD_ENABLE 0xAE /* Keyboard interface enable */ |
| #define KBD_CCMD_READ_INPORT 0xC0 /* read input port */ |
| #define KBD_CCMD_READ_OUTPORT 0xD0 /* read output port */ |
| #define KBD_CCMD_WRITE_OUTPORT 0xD1 /* write output port */ |
| #define KBD_CCMD_WRITE_OBUF 0xD2 |
| #define KBD_CCMD_WRITE_AUX_OBUF 0xD3 /* Write to output buffer as if |
| initiated by the auxiliary device */ |
| #define KBD_CCMD_WRITE_MOUSE 0xD4 /* Write the following byte to the mouse */ |
| #define KBD_CCMD_DISABLE_A20 0xDD /* HP vectra only ? */ |
| #define KBD_CCMD_ENABLE_A20 0xDF /* HP vectra only ? */ |
| #define KBD_CCMD_RESET 0xFE |
| |
| /* Keyboard Commands */ |
| #define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */ |
| #define KBD_CMD_ECHO 0xEE |
| #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 */ |
| |
| /* Keyboard Replies */ |
| #define KBD_REPLY_POR 0xAA /* Power on reset */ |
| #define KBD_REPLY_ACK 0xFA /* Command ACK */ |
| #define KBD_REPLY_RESEND 0xFE /* Command NACK, send the cmd again */ |
| |
| /* Status Register Bits */ |
| #define KBD_STAT_OBF 0x01 /* Keyboard output buffer full */ |
| #define KBD_STAT_IBF 0x02 /* Keyboard input buffer full */ |
| #define KBD_STAT_SELFTEST 0x04 /* Self test successful */ |
| #define KBD_STAT_CMD 0x08 /* Last write was a command write (0=data) */ |
| #define KBD_STAT_UNLOCKED 0x10 /* Zero if keyboard locked */ |
| #define KBD_STAT_MOUSE_OBF 0x20 /* Mouse output buffer full */ |
| #define KBD_STAT_GTO 0x40 /* General receive/xmit timeout */ |
| #define KBD_STAT_PERR 0x80 /* Parity error */ |
| |
| /* Controller Mode Register Bits */ |
| #define KBD_MODE_KBD_INT 0x01 /* Keyboard data generate IRQ1 */ |
| #define KBD_MODE_MOUSE_INT 0x02 /* Mouse data generate IRQ12 */ |
| #define KBD_MODE_SYS 0x04 /* The system flag (?) */ |
| #define KBD_MODE_NO_KEYLOCK 0x08 /* The keylock doesn't affect the keyboard if set */ |
| #define KBD_MODE_DISABLE_KBD 0x10 /* Disable keyboard interface */ |
| #define KBD_MODE_DISABLE_MOUSE 0x20 /* Disable mouse interface */ |
| #define KBD_MODE_KCC 0x40 /* Scan code conversion to PC format */ |
| #define KBD_MODE_RFU 0x80 |
| |
| /* 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 KBD_QUEUE_SIZE 256 |
| |
| typedef struct { |
| uint8_t aux[KBD_QUEUE_SIZE]; |
| uint8_t data[KBD_QUEUE_SIZE]; |
| int rptr, wptr, count; |
| } KBDQueue; |
| |
| typedef struct KBDState { |
| KBDQueue queue; |
| uint8_t write_cmd; /* if non zero, write data to port 60 is expected */ |
| uint8_t status; |
| uint8_t mode; |
| /* keyboard state */ |
| int kbd_write_cmd; |
| int scan_enabled; |
| /* mouse state */ |
| int mouse_write_cmd; |
| uint8_t mouse_status; |
| uint8_t mouse_resolution; |
| uint8_t mouse_sample_rate; |
| uint8_t mouse_wrap; |
| uint8_t mouse_type; /* 0 = PS2, 3 = IMPS/2, 4 = IMEX */ |
| uint8_t mouse_detect_state; |
| int mouse_dx; /* current values, needed for 'poll' mode */ |
| int mouse_dy; |
| int mouse_dz; |
| uint8_t mouse_buttons; |
| } KBDState; |
| |
| KBDState kbd_state; |
| int reset_requested; |
| |
| /* update irq and KBD_STAT_[MOUSE_]OBF */ |
| /* XXX: not generating the irqs if KBD_MODE_DISABLE_KBD is set may be |
| incorrect, but it avoids having to simulate exact delays */ |
| static void kbd_update_irq(KBDState *s) |
| { |
| KBDQueue *q = &s->queue; |
| int irq12_level, irq1_level; |
| |
| irq1_level = 0; |
| irq12_level = 0; |
| s->status &= ~(KBD_STAT_OBF | KBD_STAT_MOUSE_OBF); |
| if (q->count != 0) { |
| s->status |= KBD_STAT_OBF; |
| if (q->aux[q->rptr]) { |
| s->status |= KBD_STAT_MOUSE_OBF; |
| if (s->mode & KBD_MODE_MOUSE_INT) |
| irq12_level = 1; |
| } else { |
| if ((s->mode & KBD_MODE_KBD_INT) && |
| !(s->mode & KBD_MODE_DISABLE_KBD)) |
| irq1_level = 1; |
| } |
| } |
| pic_set_irq(1, irq1_level); |
| pic_set_irq(12, irq12_level); |
| } |
| |
| static void kbd_queue(KBDState *s, int b, int aux) |
| { |
| KBDQueue *q = &s->queue; |
| |
| #if defined(DEBUG_MOUSE) || defined(DEBUG_KBD) |
| if (aux) |
| printf("mouse event: 0x%02x\n", b); |
| #ifdef DEBUG_KBD |
| else |
| printf("kbd event: 0x%02x\n", b); |
| #endif |
| #endif |
| if (q->count >= KBD_QUEUE_SIZE) |
| return; |
| q->aux[q->wptr] = aux; |
| q->data[q->wptr] = b; |
| if (++q->wptr == KBD_QUEUE_SIZE) |
| q->wptr = 0; |
| q->count++; |
| kbd_update_irq(s); |
| } |
| |
| void kbd_put_keycode(int keycode) |
| { |
| KBDState *s = &kbd_state; |
| kbd_queue(s, keycode, 0); |
| } |
| |
| static uint32_t kbd_read_status(void *opaque, uint32_t addr) |
| { |
| KBDState *s = opaque; |
| int val; |
| val = s->status; |
| #if defined(DEBUG_KBD) |
| printf("kbd: read status=0x%02x\n", val); |
| #endif |
| return val; |
| } |
| |
| static void kbd_write_command(void *opaque, uint32_t addr, uint32_t val) |
| { |
| KBDState *s = opaque; |
| |
| #ifdef DEBUG_KBD |
| printf("kbd: write cmd=0x%02x\n", val); |
| #endif |
| switch(val) { |
| case KBD_CCMD_READ_MODE: |
| kbd_queue(s, s->mode, 0); |
| break; |
| case KBD_CCMD_WRITE_MODE: |
| case KBD_CCMD_WRITE_OBUF: |
| case KBD_CCMD_WRITE_AUX_OBUF: |
| case KBD_CCMD_WRITE_MOUSE: |
| case KBD_CCMD_WRITE_OUTPORT: |
| s->write_cmd = val; |
| break; |
| case KBD_CCMD_MOUSE_DISABLE: |
| s->mode |= KBD_MODE_DISABLE_MOUSE; |
| break; |
| case KBD_CCMD_MOUSE_ENABLE: |
| s->mode &= ~KBD_MODE_DISABLE_MOUSE; |
| break; |
| case KBD_CCMD_TEST_MOUSE: |
| kbd_queue(s, 0x00, 0); |
| break; |
| case KBD_CCMD_SELF_TEST: |
| s->status |= KBD_STAT_SELFTEST; |
| kbd_queue(s, 0x55, 0); |
| break; |
| case KBD_CCMD_KBD_TEST: |
| kbd_queue(s, 0x00, 0); |
| break; |
| case KBD_CCMD_KBD_DISABLE: |
| s->mode |= KBD_MODE_DISABLE_KBD; |
| kbd_update_irq(s); |
| break; |
| case KBD_CCMD_KBD_ENABLE: |
| s->mode &= ~KBD_MODE_DISABLE_KBD; |
| kbd_update_irq(s); |
| break; |
| case KBD_CCMD_READ_INPORT: |
| kbd_queue(s, 0x00, 0); |
| break; |
| case KBD_CCMD_READ_OUTPORT: |
| /* XXX: check that */ |
| #ifdef TARGET_I386 |
| val = 0x01 | (((cpu_single_env->a20_mask >> 20) & 1) << 1); |
| #else |
| val = 0x01; |
| #endif |
| if (s->status & KBD_STAT_OBF) |
| val |= 0x10; |
| if (s->status & KBD_STAT_MOUSE_OBF) |
| val |= 0x20; |
| kbd_queue(s, val, 0); |
| break; |
| #ifdef TARGET_I386 |
| case KBD_CCMD_ENABLE_A20: |
| cpu_x86_set_a20(cpu_single_env, 1); |
| break; |
| case KBD_CCMD_DISABLE_A20: |
| cpu_x86_set_a20(cpu_single_env, 0); |
| break; |
| #endif |
| case KBD_CCMD_RESET: |
| reset_requested = 1; |
| cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT); |
| break; |
| case 0xff: |
| /* ignore that - I don't know what is its use */ |
| break; |
| default: |
| fprintf(stderr, "qemu: unsupported keyboard cmd=0x%02x\n", val); |
| break; |
| } |
| } |
| |
| static uint32_t kbd_read_data(void *opaque, uint32_t addr) |
| { |
| KBDState *s = opaque; |
| KBDQueue *q; |
| int val, index, aux; |
| |
| 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 = KBD_QUEUE_SIZE - 1; |
| val = q->data[index]; |
| } else { |
| aux = q->aux[q->rptr]; |
| val = q->data[q->rptr]; |
| if (++q->rptr == KBD_QUEUE_SIZE) |
| q->rptr = 0; |
| q->count--; |
| /* reading deasserts IRQ */ |
| if (aux) |
| pic_set_irq(12, 0); |
| else |
| pic_set_irq(1, 0); |
| } |
| /* reassert IRQs if data left */ |
| kbd_update_irq(s); |
| #ifdef DEBUG_KBD |
| printf("kbd: read data=0x%02x\n", val); |
| #endif |
| return val; |
| } |
| |
| static void kbd_reset_keyboard(KBDState *s) |
| { |
| s->scan_enabled = 1; |
| } |
| |
| static void kbd_write_keyboard(KBDState *s, int val) |
| { |
| switch(s->kbd_write_cmd) { |
| default: |
| case -1: |
| switch(val) { |
| case 0x00: |
| kbd_queue(s, KBD_REPLY_ACK, 0); |
| break; |
| case 0x05: |
| kbd_queue(s, KBD_REPLY_RESEND, 0); |
| break; |
| case KBD_CMD_GET_ID: |
| kbd_queue(s, KBD_REPLY_ACK, 0); |
| kbd_queue(s, 0xab, 0); |
| kbd_queue(s, 0x83, 0); |
| break; |
| case KBD_CMD_ECHO: |
| kbd_queue(s, KBD_CMD_ECHO, 0); |
| break; |
| case KBD_CMD_ENABLE: |
| s->scan_enabled = 1; |
| kbd_queue(s, KBD_REPLY_ACK, 0); |
| break; |
| case KBD_CMD_SET_LEDS: |
| case KBD_CMD_SET_RATE: |
| s->kbd_write_cmd = val; |
| kbd_queue(s, KBD_REPLY_ACK, 0); |
| break; |
| case KBD_CMD_RESET_DISABLE: |
| kbd_reset_keyboard(s); |
| s->scan_enabled = 0; |
| kbd_queue(s, KBD_REPLY_ACK, 0); |
| break; |
| case KBD_CMD_RESET_ENABLE: |
| kbd_reset_keyboard(s); |
| s->scan_enabled = 1; |
| kbd_queue(s, KBD_REPLY_ACK, 0); |
| break; |
| case KBD_CMD_RESET: |
| kbd_reset_keyboard(s); |
| kbd_queue(s, KBD_REPLY_ACK, 0); |
| kbd_queue(s, KBD_REPLY_POR, 0); |
| break; |
| default: |
| kbd_queue(s, KBD_REPLY_ACK, 0); |
| break; |
| } |
| break; |
| case KBD_CMD_SET_LEDS: |
| kbd_queue(s, KBD_REPLY_ACK, 0); |
| s->kbd_write_cmd = -1; |
| break; |
| case KBD_CMD_SET_RATE: |
| kbd_queue(s, KBD_REPLY_ACK, 0); |
| s->kbd_write_cmd = -1; |
| break; |
| } |
| } |
| |
| static void kbd_mouse_send_packet(KBDState *s) |
| { |
| unsigned int b; |
| int dx1, dy1, dz1; |
| |
| dx1 = s->mouse_dx; |
| dy1 = s->mouse_dy; |
| dz1 = s->mouse_dz; |
| /* 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); |
| kbd_queue(s, b, 1); |
| kbd_queue(s, dx1 & 0xff, 1); |
| kbd_queue(s, dy1 & 0xff, 1); |
| /* extra byte for IMPS/2 or IMEX */ |
| switch(s->mouse_type) { |
| default: |
| break; |
| case 3: |
| if (dz1 > 127) |
| dz1 = 127; |
| else if (dz1 < -127) |
| dz1 = -127; |
| kbd_queue(s, dz1 & 0xff, 1); |
| break; |
| case 4: |
| if (dz1 > 7) |
| dz1 = 7; |
| else if (dz1 < -7) |
| dz1 = -7; |
| b = (dz1 & 0x0f) | ((s->mouse_buttons & 0x18) << 1); |
| kbd_queue(s, b, 1); |
| break; |
| } |
| |
| /* update deltas */ |
| s->mouse_dx -= dx1; |
| s->mouse_dy -= dy1; |
| s->mouse_dz -= dz1; |
| } |
| |
| void kbd_mouse_event(int dx, int dy, int dz, int buttons_state) |
| { |
| KBDState *s = &kbd_state; |
| |
| /* check if deltas are recorded when disabled */ |
| if (!(s->mouse_status & MOUSE_STATUS_ENABLED)) |
| return; |
| |
| s->mouse_dx += dx; |
| s->mouse_dy -= dy; |
| s->mouse_dz += dz; |
| /* XXX: SDL sometimes generates nul events: we delete them */ |
| if (s->mouse_dx == 0 && s->mouse_dy == 0 && s->mouse_dz == 0 && |
| s->mouse_buttons == buttons_state) |
| return; |
| s->mouse_buttons = buttons_state; |
| |
| if (!(s->mouse_status & MOUSE_STATUS_REMOTE) && |
| (s->queue.count < (KBD_QUEUE_SIZE - 16))) { |
| for(;;) { |
| /* if not remote, send event. Multiple events are sent if |
| too big deltas */ |
| kbd_mouse_send_packet(s); |
| if (s->mouse_dx == 0 && s->mouse_dy == 0 && s->mouse_dz == 0) |
| break; |
| } |
| } |
| } |
| |
| static void kbd_write_mouse(KBDState *s, int val) |
| { |
| #ifdef DEBUG_MOUSE |
| printf("kbd: write mouse 0x%02x\n", val); |
| #endif |
| switch(s->mouse_write_cmd) { |
| default: |
| case -1: |
| /* mouse command */ |
| if (s->mouse_wrap) { |
| if (val == AUX_RESET_WRAP) { |
| s->mouse_wrap = 0; |
| kbd_queue(s, AUX_ACK, 1); |
| return; |
| } else if (val != AUX_RESET) { |
| kbd_queue(s, val, 1); |
| return; |
| } |
| } |
| switch(val) { |
| case AUX_SET_SCALE11: |
| s->mouse_status &= ~MOUSE_STATUS_SCALE21; |
| kbd_queue(s, AUX_ACK, 1); |
| break; |
| case AUX_SET_SCALE21: |
| s->mouse_status |= MOUSE_STATUS_SCALE21; |
| kbd_queue(s, AUX_ACK, 1); |
| break; |
| case AUX_SET_STREAM: |
| s->mouse_status &= ~MOUSE_STATUS_REMOTE; |
| kbd_queue(s, AUX_ACK, 1); |
| break; |
| case AUX_SET_WRAP: |
| s->mouse_wrap = 1; |
| kbd_queue(s, AUX_ACK, 1); |
| break; |
| case AUX_SET_REMOTE: |
| s->mouse_status |= MOUSE_STATUS_REMOTE; |
| kbd_queue(s, AUX_ACK, 1); |
| break; |
| case AUX_GET_TYPE: |
| kbd_queue(s, AUX_ACK, 1); |
| kbd_queue(s, s->mouse_type, 1); |
| break; |
| case AUX_SET_RES: |
| case AUX_SET_SAMPLE: |
| s->mouse_write_cmd = val; |
| kbd_queue(s, AUX_ACK, 1); |
| break; |
| case AUX_GET_SCALE: |
| kbd_queue(s, AUX_ACK, 1); |
| kbd_queue(s, s->mouse_status, 1); |
| kbd_queue(s, s->mouse_resolution, 1); |
| kbd_queue(s, s->mouse_sample_rate, 1); |
| break; |
| case AUX_POLL: |
| kbd_queue(s, AUX_ACK, 1); |
| kbd_mouse_send_packet(s); |
| break; |
| case AUX_ENABLE_DEV: |
| s->mouse_status |= MOUSE_STATUS_ENABLED; |
| kbd_queue(s, AUX_ACK, 1); |
| break; |
| case AUX_DISABLE_DEV: |
| s->mouse_status &= ~MOUSE_STATUS_ENABLED; |
| kbd_queue(s, AUX_ACK, 1); |
| break; |
| case AUX_SET_DEFAULT: |
| s->mouse_sample_rate = 100; |
| s->mouse_resolution = 2; |
| s->mouse_status = 0; |
| kbd_queue(s, AUX_ACK, 1); |
| break; |
| case AUX_RESET: |
| s->mouse_sample_rate = 100; |
| s->mouse_resolution = 2; |
| s->mouse_status = 0; |
| kbd_queue(s, AUX_ACK, 1); |
| kbd_queue(s, 0xaa, 1); |
| kbd_queue(s, s->mouse_type, 1); |
| break; |
| default: |
| break; |
| } |
| break; |
| case AUX_SET_SAMPLE: |
| s->mouse_sample_rate = val; |
| #if 0 |
| /* 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; |
| } |
| #endif |
| kbd_queue(s, AUX_ACK, 1); |
| s->mouse_write_cmd = -1; |
| break; |
| case AUX_SET_RES: |
| s->mouse_resolution = val; |
| kbd_queue(s, AUX_ACK, 1); |
| s->mouse_write_cmd = -1; |
| break; |
| } |
| } |
| |
| void kbd_write_data(void *opaque, uint32_t addr, uint32_t val) |
| { |
| KBDState *s = opaque; |
| |
| #ifdef DEBUG_KBD |
| printf("kbd: write data=0x%02x\n", val); |
| #endif |
| |
| switch(s->write_cmd) { |
| case 0: |
| kbd_write_keyboard(s, val); |
| break; |
| case KBD_CCMD_WRITE_MODE: |
| s->mode = val; |
| kbd_update_irq(s); |
| break; |
| case KBD_CCMD_WRITE_OBUF: |
| kbd_queue(s, val, 0); |
| break; |
| case KBD_CCMD_WRITE_AUX_OBUF: |
| kbd_queue(s, val, 1); |
| break; |
| case KBD_CCMD_WRITE_OUTPORT: |
| #ifdef TARGET_I386 |
| cpu_x86_set_a20(cpu_single_env, (val >> 1) & 1); |
| #endif |
| if (!(val & 1)) { |
| reset_requested = 1; |
| cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT); |
| } |
| break; |
| case KBD_CCMD_WRITE_MOUSE: |
| kbd_write_mouse(s, val); |
| break; |
| default: |
| break; |
| } |
| s->write_cmd = 0; |
| } |
| |
| void kbd_reset(KBDState *s) |
| { |
| KBDQueue *q; |
| |
| s->kbd_write_cmd = -1; |
| s->mouse_write_cmd = -1; |
| s->mode = KBD_MODE_KBD_INT | KBD_MODE_MOUSE_INT; |
| s->status = KBD_STAT_CMD | KBD_STAT_UNLOCKED; |
| q = &s->queue; |
| q->rptr = 0; |
| q->wptr = 0; |
| q->count = 0; |
| } |
| |
| void kbd_init(void) |
| { |
| KBDState *s = &kbd_state; |
| |
| kbd_reset(s); |
| register_ioport_read(0x60, 1, 1, kbd_read_data, s); |
| register_ioport_write(0x60, 1, 1, kbd_write_data, s); |
| register_ioport_read(0x64, 1, 1, kbd_read_status, s); |
| register_ioport_write(0x64, 1, 1, kbd_write_command, s); |
| } |
