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-rw-r--r--hw/pckbd.c672
1 files changed, 672 insertions, 0 deletions
diff --git a/hw/pckbd.c b/hw/pckbd.c
new file mode 100644
index 0000000000..8c0d3a72c2
--- /dev/null
+++ b/hw/pckbd.c
@@ -0,0 +1,672 @@
+/*
+ * 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 <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <getopt.h>
+#include <inttypes.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <time.h>
+#include <sys/time.h>
+#include <malloc.h>
+#include <termios.h>
+#include <sys/poll.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include <netinet/in.h>
+
+#include "cpu.h"
+#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 data[KBD_QUEUE_SIZE];
+ int rptr, wptr, count;
+} KBDQueue;
+
+typedef struct KBDState {
+ KBDQueue queues[2];
+ 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)
+{
+ int irq12_level, irq1_level;
+
+ irq1_level = 0;
+ irq12_level = 0;
+ s->status &= ~(KBD_STAT_OBF | KBD_STAT_MOUSE_OBF);
+ if (s->queues[0].count != 0 ||
+ s->queues[1].count != 0) {
+ s->status |= KBD_STAT_OBF;
+ if (s->queues[1].count != 0) {
+ 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 = &kbd_state.queues[aux];
+
+#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->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(CPUState *env, uint32_t addr)
+{
+ KBDState *s = &kbd_state;
+ 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(CPUState *env, uint32_t addr, uint32_t val)
+{
+ KBDState *s = &kbd_state;
+
+#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(env, 1);
+ break;
+ case KBD_CCMD_DISABLE_A20:
+ cpu_x86_set_a20(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(CPUState *env, uint32_t addr)
+{
+ KBDState *s = &kbd_state;
+ KBDQueue *q;
+ int val, index;
+
+ q = &s->queues[0]; /* first check KBD data */
+ if (q->count == 0)
+ q = &s->queues[1]; /* then check AUX data */
+ 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 */
+ q = &s->queues[0];
+ index = q->rptr - 1;
+ if (index < 0)
+ index = KBD_QUEUE_SIZE - 1;
+ val = q->data[index];
+ } else {
+ val = q->data[q->rptr];
+ if (++q->rptr == KBD_QUEUE_SIZE)
+ q->rptr = 0;
+ q->count--;
+ /* reading deasserts IRQ */
+ if (q == &s->queues[0])
+ pic_set_irq(1, 0);
+ else
+ pic_set_irq(12, 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;
+ s->mouse_buttons = buttons_state;
+
+ if (!(s->mouse_status & MOUSE_STATUS_REMOTE) &&
+ (s->queues[1].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(CPUState *env, uint32_t addr, uint32_t val)
+{
+ KBDState *s = &kbd_state;
+
+#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(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;
+ int i;
+
+ 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;
+ for(i = 0; i < 2; i++) {
+ q = &s->queues[i];
+ q->rptr = 0;
+ q->wptr = 0;
+ q->count = 0;
+ }
+}
+
+void kbd_init(void)
+{
+ kbd_reset(&kbd_state);
+ register_ioport_read(0x60, 1, kbd_read_data, 1);
+ register_ioport_write(0x60, 1, kbd_write_data, 1);
+ register_ioport_read(0x64, 1, kbd_read_status, 1);
+ register_ioport_write(0x64, 1, kbd_write_command, 1);
+}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-20 22:27:46 +0000