[qemu.git] / hw / pckbd.c

/*
 * 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 "hw.h"
#include "isa.h"
#include "pc.h"
#include "ps2.h"
#include "sysemu.h"

/* debug PC keyboard */
//#define DEBUG_KBD

/*	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_PENDING_KBD         1
#define KBD_PENDING_AUX         2

typedef struct KBDState {
    uint8_t write_cmd; /* if non zero, write data to port 60 is expected */
    uint8_t status;
    uint8_t mode;
    /* Bitmask of devices with data available.  */
    uint8_t pending;
    void *kbd;
    void *mouse;

    qemu_irq irq_kbd;
    qemu_irq irq_mouse;
    target_phys_addr_t mask;
} KBDState;

static KBDState kbd_state;

/* 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 irq_kbd_level, irq_mouse_level;

    irq_kbd_level = 0;
    irq_mouse_level = 0;
    s->status &= ~(KBD_STAT_OBF | KBD_STAT_MOUSE_OBF);
    if (s->pending) {
        s->status |= KBD_STAT_OBF;
        /* kbd data takes priority over aux data.  */
        if (s->pending == KBD_PENDING_AUX) {
            s->status |= KBD_STAT_MOUSE_OBF;
            if (s->mode & KBD_MODE_MOUSE_INT)
                irq_mouse_level = 1;
        } else {
            if ((s->mode & KBD_MODE_KBD_INT) &&
                !(s->mode & KBD_MODE_DISABLE_KBD))
                irq_kbd_level = 1;
        }
    }
    qemu_set_irq(s->irq_kbd, irq_kbd_level);
    qemu_set_irq(s->irq_mouse, irq_mouse_level);
}

static void kbd_update_kbd_irq(void *opaque, int level)
{
    KBDState *s = (KBDState *)opaque;

    if (level)
        s->pending |= KBD_PENDING_KBD;
    else
        s->pending &= ~KBD_PENDING_KBD;
    kbd_update_irq(s);
}

static void kbd_update_aux_irq(void *opaque, int level)
{
    KBDState *s = (KBDState *)opaque;

    if (level)
        s->pending |= KBD_PENDING_AUX;
    else
        s->pending &= ~KBD_PENDING_AUX;
    kbd_update_irq(s);
}

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_queue(KBDState *s, int b, int aux)
{
    if (aux)
        ps2_queue(s->mouse, b);
    else
        ps2_queue(s->kbd, b);
}

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 | (ioport_get_a20() << 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:
        ioport_set_a20(1);
        break;
    case KBD_CCMD_DISABLE_A20:
        ioport_set_a20(0);
        break;
#endif
    case KBD_CCMD_RESET:
        qemu_system_reset_request();
        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;
    uint32_t val;

    if (s->pending == KBD_PENDING_AUX)
        val = ps2_read_data(s->mouse);
    else
        val = ps2_read_data(s->kbd);

#if defined(DEBUG_KBD)
    printf("kbd: read data=0x%02x\n", val);
#endif
    return val;
}

static 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:
        ps2_write_keyboard(s->kbd, val);
        break;
    case KBD_CCMD_WRITE_MODE:
        s->mode = val;
        ps2_keyboard_set_translation(s->kbd, (s->mode & KBD_MODE_KCC) != 0);
        /* ??? */
        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
        ioport_set_a20((val >> 1) & 1);
#endif
        if (!(val & 1)) {
            qemu_system_reset_request();
        }
        break;
    case KBD_CCMD_WRITE_MOUSE:
        ps2_write_mouse(s->mouse, val);
        break;
    default:
        break;
    }
    s->write_cmd = 0;
}

static void kbd_reset(void *opaque)
{
    KBDState *s = opaque;

    s->mode = KBD_MODE_KBD_INT | KBD_MODE_MOUSE_INT;
    s->status = KBD_STAT_CMD | KBD_STAT_UNLOCKED;
}

static void kbd_save(QEMUFile* f, void* opaque)
{
    KBDState *s = (KBDState*)opaque;

    qemu_put_8s(f, &s->write_cmd);
    qemu_put_8s(f, &s->status);
    qemu_put_8s(f, &s->mode);
    qemu_put_8s(f, &s->pending);
}

static int kbd_load(QEMUFile* f, void* opaque, int version_id)
{
    KBDState *s = (KBDState*)opaque;

    if (version_id != 3)
        return -EINVAL;
    qemu_get_8s(f, &s->write_cmd);
    qemu_get_8s(f, &s->status);
    qemu_get_8s(f, &s->mode);
    qemu_get_8s(f, &s->pending);
    return 0;
}

void i8042_init(qemu_irq kbd_irq, qemu_irq mouse_irq, uint32_t io_base)
{
    KBDState *s = &kbd_state;

    s->irq_kbd = kbd_irq;
    s->irq_mouse = mouse_irq;

    kbd_reset(s);
    register_savevm("pckbd", 0, 3, kbd_save, kbd_load, s);
    register_ioport_read(io_base, 1, 1, kbd_read_data, s);
    register_ioport_write(io_base, 1, 1, kbd_write_data, s);
    register_ioport_read(io_base + 4, 1, 1, kbd_read_status, s);
    register_ioport_write(io_base + 4, 1, 1, kbd_write_command, s);

    s->kbd = ps2_kbd_init(kbd_update_kbd_irq, s);
    s->mouse = ps2_mouse_init(kbd_update_aux_irq, s);
#ifdef TARGET_I386
    vmmouse_init(s->mouse);
#endif
    qemu_register_reset(kbd_reset, s);
}

/* Memory mapped interface */
static uint32_t kbd_mm_readb (void *opaque, target_phys_addr_t addr)
{
    KBDState *s = opaque;

    if (addr & s->mask)
        return kbd_read_status(s, 0) & 0xff;
    else
        return kbd_read_data(s, 0) & 0xff;
}

static void kbd_mm_writeb (void *opaque, target_phys_addr_t addr, uint32_t value)
{
    KBDState *s = opaque;

    if (addr & s->mask)
        kbd_write_command(s, 0, value & 0xff);
    else
        kbd_write_data(s, 0, value & 0xff);
}

static CPUReadMemoryFunc *kbd_mm_read[] = {
    &kbd_mm_readb,
    &kbd_mm_readb,
    &kbd_mm_readb,
};

static CPUWriteMemoryFunc *kbd_mm_write[] = {
    &kbd_mm_writeb,
    &kbd_mm_writeb,
    &kbd_mm_writeb,
};

void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq,
                   target_phys_addr_t base, ram_addr_t size,
                   target_phys_addr_t mask)
{
    KBDState *s = &kbd_state;
    int s_io_memory;

    s->irq_kbd = kbd_irq;
    s->irq_mouse = mouse_irq;
    s->mask = mask;

    kbd_reset(s);
    register_savevm("pckbd", 0, 3, kbd_save, kbd_load, s);
    s_io_memory = cpu_register_io_memory(kbd_mm_read, kbd_mm_write, s);
    cpu_register_physical_memory(base, size, s_io_memory);

    s->kbd = ps2_kbd_init(kbd_update_kbd_irq, s);
    s->mouse = ps2_mouse_init(kbd_update_aux_irq, s);
#ifdef TARGET_I386
    vmmouse_init(s->mouse);
#endif
    qemu_register_reset(kbd_reset, s);
}
Commit	Line	Data
80cabfad FB	1	/*
80cabfad FB	2	* QEMU PC keyboard emulation
5fafdf24	3	*
80cabfad	4	* Copyright (c) 2003 Fabrice Bellard
5fafdf24	5	*
80cabfad FB	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
87ecb68b PB	24	#include "hw.h"
	25	#include "isa.h"
	26	#include "pc.h"
	27	#include "ps2.h"
	28	#include "sysemu.h"
80cabfad FB	29
	30	/* debug PC keyboard */
	31	//#define DEBUG_KBD
	32
80cabfad FB	33	/* Keyboard Controller Commands */
	34	#define KBD_CCMD_READ_MODE 0x20 /* Read mode bits */
	35	#define KBD_CCMD_WRITE_MODE 0x60 /* Write mode bits */
	36	#define KBD_CCMD_GET_VERSION 0xA1 /* Get controller version */
	37	#define KBD_CCMD_MOUSE_DISABLE 0xA7 /* Disable mouse interface */
	38	#define KBD_CCMD_MOUSE_ENABLE 0xA8 /* Enable mouse interface */
	39	#define KBD_CCMD_TEST_MOUSE 0xA9 /* Mouse interface test */
	40	#define KBD_CCMD_SELF_TEST 0xAA /* Controller self test */
	41	#define KBD_CCMD_KBD_TEST 0xAB /* Keyboard interface test */
	42	#define KBD_CCMD_KBD_DISABLE 0xAD /* Keyboard interface disable */
	43	#define KBD_CCMD_KBD_ENABLE 0xAE /* Keyboard interface enable */
	44	#define KBD_CCMD_READ_INPORT 0xC0 /* read input port */
	45	#define KBD_CCMD_READ_OUTPORT 0xD0 /* read output port */
	46	#define KBD_CCMD_WRITE_OUTPORT 0xD1 /* write output port */
	47	#define KBD_CCMD_WRITE_OBUF 0xD2
	48	#define KBD_CCMD_WRITE_AUX_OBUF 0xD3 /* Write to output buffer as if
	49	initiated by the auxiliary device */
	50	#define KBD_CCMD_WRITE_MOUSE 0xD4 /* Write the following byte to the mouse */
	51	#define KBD_CCMD_DISABLE_A20 0xDD /* HP vectra only ? */
	52	#define KBD_CCMD_ENABLE_A20 0xDF /* HP vectra only ? */
	53	#define KBD_CCMD_RESET 0xFE
	54
	55	/* Keyboard Commands */
	56	#define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */
	57	#define KBD_CMD_ECHO 0xEE
	58	#define KBD_CMD_GET_ID 0xF2 /* get keyboard ID */
	59	#define KBD_CMD_SET_RATE 0xF3 /* Set typematic rate */
	60	#define KBD_CMD_ENABLE 0xF4 /* Enable scanning */
	61	#define KBD_CMD_RESET_DISABLE 0xF5 /* reset and disable scanning */
	62	#define KBD_CMD_RESET_ENABLE 0xF6 /* reset and enable scanning */
	63	#define KBD_CMD_RESET 0xFF /* Reset */
	64
	65	/* Keyboard Replies */
	66	#define KBD_REPLY_POR 0xAA /* Power on reset */
	67	#define KBD_REPLY_ACK 0xFA /* Command ACK */
	68	#define KBD_REPLY_RESEND 0xFE /* Command NACK, send the cmd again */
	69
	70	/* Status Register Bits */
	71	#define KBD_STAT_OBF 0x01 /* Keyboard output buffer full */
	72	#define KBD_STAT_IBF 0x02 /* Keyboard input buffer full */
	73	#define KBD_STAT_SELFTEST 0x04 /* Self test successful */
	74	#define KBD_STAT_CMD 0x08 /* Last write was a command write (0=data) */
	75	#define KBD_STAT_UNLOCKED 0x10 /* Zero if keyboard locked */
	76	#define KBD_STAT_MOUSE_OBF 0x20 /* Mouse output buffer full */
	77	#define KBD_STAT_GTO 0x40 /* General receive/xmit timeout */
	78	#define KBD_STAT_PERR 0x80 /* Parity error */
	79
	80	/* Controller Mode Register Bits */
	81	#define KBD_MODE_KBD_INT 0x01 /* Keyboard data generate IRQ1 */
	82	#define KBD_MODE_MOUSE_INT 0x02 /* Mouse data generate IRQ12 */
	83	#define KBD_MODE_SYS 0x04 /* The system flag (?) */
	84	#define KBD_MODE_NO_KEYLOCK 0x08 /* The keylock doesn't affect the keyboard if set */
	85	#define KBD_MODE_DISABLE_KBD 0x10 /* Disable keyboard interface */
	86	#define KBD_MODE_DISABLE_MOUSE 0x20 /* Disable mouse interface */
	87	#define KBD_MODE_KCC 0x40 /* Scan code conversion to PC format */
	88	#define KBD_MODE_RFU 0x80
	89
	90	/* Mouse Commands */
	91	#define AUX_SET_SCALE11 0xE6 /* Set 1:1 scaling */
	92	#define AUX_SET_SCALE21 0xE7 /* Set 2:1 scaling */
	93	#define AUX_SET_RES 0xE8 /* Set resolution */
	94	#define AUX_GET_SCALE 0xE9 /* Get scaling factor */
	95	#define AUX_SET_STREAM 0xEA /* Set stream mode */
	96	#define AUX_POLL 0xEB /* Poll */
97	#define AUX_RESET_WRAP 0xEC /* Reset wrap mode */
98	#define AUX_SET_WRAP 0xEE /* Set wrap mode */
99	#define AUX_SET_REMOTE 0xF0 /* Set remote mode */
100	#define AUX_GET_TYPE 0xF2 /* Get type */
101	#define AUX_SET_SAMPLE 0xF3 /* Set sample rate */
102	#define AUX_ENABLE_DEV 0xF4 /* Enable aux device */
103	#define AUX_DISABLE_DEV 0xF5 /* Disable aux device */
104	#define AUX_SET_DEFAULT 0xF6
105	#define AUX_RESET 0xFF /* Reset aux device */
106	#define AUX_ACK 0xFA /* Command byte ACK. */
107
108	#define MOUSE_STATUS_REMOTE 0x40
109	#define MOUSE_STATUS_ENABLED 0x20
110	#define MOUSE_STATUS_SCALE21 0x10
111
daa57963 FB	112	#define KBD_PENDING_KBD 1
daa57963 FB	113	#define KBD_PENDING_AUX 2
80cabfad FB	114
80cabfad FB	115	typedef struct KBDState {
80cabfad FB	116	uint8_t write_cmd; /* if non zero, write data to port 60 is expected */
	117	uint8_t status;
	118	uint8_t mode;
daa57963	119	/* Bitmask of devices with data available. */
7783e9f0	120	uint8_t pending;
daa57963 FB	121	void *kbd;
daa57963 FB	122	void *mouse;
b7678d96	123
d537cf6c PB	124	qemu_irq irq_kbd;
d537cf6c PB	125	qemu_irq irq_mouse;
4efbe58f	126	target_phys_addr_t mask;
80cabfad FB	127	} KBDState;
80cabfad FB	128
b1d8e52e	129	static KBDState kbd_state;
80cabfad FB	130
	131	/* update irq and KBD_STAT_[MOUSE_]OBF */
	132	/* XXX: not generating the irqs if KBD_MODE_DISABLE_KBD is set may be
	133	incorrect, but it avoids having to simulate exact delays */
	134	static void kbd_update_irq(KBDState *s)
	135	{
b7678d96	136	int irq_kbd_level, irq_mouse_level;
80cabfad	137
b7678d96 TS	138	irq_kbd_level = 0;
b7678d96 TS	139	irq_mouse_level = 0;
80cabfad	140	s->status &= ~(KBD_STAT_OBF \| KBD_STAT_MOUSE_OBF);
daa57963	141	if (s->pending) {
80cabfad	142	s->status \|= KBD_STAT_OBF;
b92bb99b	143	/* kbd data takes priority over aux data. */
daa57963	144	if (s->pending == KBD_PENDING_AUX) {
80cabfad FB	145	s->status \|= KBD_STAT_MOUSE_OBF;
80cabfad FB	146	if (s->mode & KBD_MODE_MOUSE_INT)
b7678d96	147	irq_mouse_level = 1;
80cabfad	148	} else {
5fafdf24	149	if ((s->mode & KBD_MODE_KBD_INT) &&
80cabfad	150	!(s->mode & KBD_MODE_DISABLE_KBD))
b7678d96	151	irq_kbd_level = 1;
80cabfad FB	152	}
80cabfad FB	153	}
d537cf6c PB	154	qemu_set_irq(s->irq_kbd, irq_kbd_level);
d537cf6c PB	155	qemu_set_irq(s->irq_mouse, irq_mouse_level);
80cabfad FB	156	}
80cabfad FB	157
daa57963	158	static void kbd_update_kbd_irq(void *opaque, int level)
80cabfad	159	{
daa57963	160	KBDState s = (KBDState )opaque;
80cabfad	161
daa57963 FB	162	if (level)
daa57963 FB	163	s->pending \|= KBD_PENDING_KBD;
80cabfad	164	else
daa57963	165	s->pending &= ~KBD_PENDING_KBD;
80cabfad FB	166	kbd_update_irq(s);
	167	}
	168
daa57963	169	static void kbd_update_aux_irq(void *opaque, int level)
80cabfad	170	{
daa57963 FB	171	KBDState s = (KBDState )opaque;
	172
	173	if (level)
	174	s->pending \|= KBD_PENDING_AUX;
	175	else
	176	s->pending &= ~KBD_PENDING_AUX;
	177	kbd_update_irq(s);
80cabfad FB	178	}
80cabfad FB	179
b41a2cd1	180	static uint32_t kbd_read_status(void *opaque, uint32_t addr)
80cabfad	181	{
b41a2cd1	182	KBDState *s = opaque;
80cabfad FB	183	int val;
	184	val = s->status;
	185	#if defined(DEBUG_KBD)
	186	printf("kbd: read status=0x%02x\n", val);
	187	#endif
	188	return val;
	189	}
	190
daa57963 FB	191	static void kbd_queue(KBDState *s, int b, int aux)
	192	{
	193	if (aux)
	194	ps2_queue(s->mouse, b);
	195	else
	196	ps2_queue(s->kbd, b);
	197	}
	198
b41a2cd1	199	static void kbd_write_command(void *opaque, uint32_t addr, uint32_t val)
80cabfad	200	{
b41a2cd1	201	KBDState *s = opaque;
80cabfad FB	202
	203	#ifdef DEBUG_KBD
	204	printf("kbd: write cmd=0x%02x\n", val);
	205	#endif
	206	switch(val) {
	207	case KBD_CCMD_READ_MODE:
889bec69	208	kbd_queue(s, s->mode, 0);
80cabfad FB	209	break;
	210	case KBD_CCMD_WRITE_MODE:
	211	case KBD_CCMD_WRITE_OBUF:
	212	case KBD_CCMD_WRITE_AUX_OBUF:
	213	case KBD_CCMD_WRITE_MOUSE:
	214	case KBD_CCMD_WRITE_OUTPORT:
	215	s->write_cmd = val;
	216	break;
	217	case KBD_CCMD_MOUSE_DISABLE:
	218	s->mode \|= KBD_MODE_DISABLE_MOUSE;
	219	break;
	220	case KBD_CCMD_MOUSE_ENABLE:
	221	s->mode &= ~KBD_MODE_DISABLE_MOUSE;
	222	break;
	223	case KBD_CCMD_TEST_MOUSE:
	224	kbd_queue(s, 0x00, 0);
	225	break;
	226	case KBD_CCMD_SELF_TEST:
	227	s->status \|= KBD_STAT_SELFTEST;
	228	kbd_queue(s, 0x55, 0);
	229	break;
	230	case KBD_CCMD_KBD_TEST:
	231	kbd_queue(s, 0x00, 0);
	232	break;
	233	case KBD_CCMD_KBD_DISABLE:
	234	s->mode \|= KBD_MODE_DISABLE_KBD;
	235	kbd_update_irq(s);
	236	break;
	237	case KBD_CCMD_KBD_ENABLE:
	238	s->mode &= ~KBD_MODE_DISABLE_KBD;
	239	kbd_update_irq(s);
	240	break;
	241	case KBD_CCMD_READ_INPORT:
	242	kbd_queue(s, 0x00, 0);
	243	break;
	244	case KBD_CCMD_READ_OUTPORT:
	245	/* XXX: check that */
	246	#ifdef TARGET_I386
c68ea704	247	val = 0x01 \| (ioport_get_a20() << 1);
80cabfad FB	248	#else
	249	val = 0x01;
	250	#endif
	251	if (s->status & KBD_STAT_OBF)
	252	val \|= 0x10;
	253	if (s->status & KBD_STAT_MOUSE_OBF)
	254	val \|= 0x20;
	255	kbd_queue(s, val, 0);
	256	break;
	257	#ifdef TARGET_I386
	258	case KBD_CCMD_ENABLE_A20:
c68ea704	259	ioport_set_a20(1);
80cabfad FB	260	break;
80cabfad FB	261	case KBD_CCMD_DISABLE_A20:
c68ea704	262	ioport_set_a20(0);
80cabfad FB	263	break;
	264	#endif
	265	case KBD_CCMD_RESET:
d7d02e3c	266	qemu_system_reset_request();
80cabfad FB	267	break;
	268	case 0xff:
	269	/* ignore that - I don't know what is its use */
	270	break;
	271	default:
	272	fprintf(stderr, "qemu: unsupported keyboard cmd=0x%02x\n", val);
	273	break;
	274	}
	275	}
	276
b41a2cd1	277	static uint32_t kbd_read_data(void *opaque, uint32_t addr)
80cabfad	278	{
63066f4f	279	KBDState *s = opaque;
e41c0f26	280	uint32_t val;
80cabfad	281
daa57963	282	if (s->pending == KBD_PENDING_AUX)
e41c0f26 AZ	283	val = ps2_read_data(s->mouse);
	284	else
	285	val = ps2_read_data(s->kbd);
80cabfad	286
e41c0f26 AZ	287	#if defined(DEBUG_KBD)
	288	printf("kbd: read data=0x%02x\n", val);
	289	#endif
	290	return val;
80cabfad FB	291	}
80cabfad FB	292
9596ebb7	293	static void kbd_write_data(void *opaque, uint32_t addr, uint32_t val)
80cabfad	294	{
b41a2cd1	295	KBDState *s = opaque;
80cabfad FB	296
	297	#ifdef DEBUG_KBD
	298	printf("kbd: write data=0x%02x\n", val);
	299	#endif
	300
	301	switch(s->write_cmd) {
	302	case 0:
daa57963	303	ps2_write_keyboard(s->kbd, val);
80cabfad FB	304	break;
	305	case KBD_CCMD_WRITE_MODE:
	306	s->mode = val;
f94f5d71	307	ps2_keyboard_set_translation(s->kbd, (s->mode & KBD_MODE_KCC) != 0);
daa57963	308	/* ??? */
80cabfad FB	309	kbd_update_irq(s);
	310	break;
	311	case KBD_CCMD_WRITE_OBUF:
	312	kbd_queue(s, val, 0);
	313	break;
	314	case KBD_CCMD_WRITE_AUX_OBUF:
	315	kbd_queue(s, val, 1);
	316	break;
	317	case KBD_CCMD_WRITE_OUTPORT:
	318	#ifdef TARGET_I386
c68ea704	319	ioport_set_a20((val >> 1) & 1);
80cabfad FB	320	#endif
80cabfad FB	321	if (!(val & 1)) {
d7d02e3c	322	qemu_system_reset_request();
80cabfad FB	323	}
	324	break;
	325	case KBD_CCMD_WRITE_MOUSE:
daa57963	326	ps2_write_mouse(s->mouse, val);
80cabfad FB	327	break;
	328	default:
	329	break;
	330	}
	331	s->write_cmd = 0;
	332	}
	333
d7d02e3c	334	static void kbd_reset(void *opaque)
80cabfad	335	{
d7d02e3c	336	KBDState *s = opaque;
80cabfad	337
80cabfad FB	338	s->mode = KBD_MODE_KBD_INT \| KBD_MODE_MOUSE_INT;
80cabfad FB	339	s->status = KBD_STAT_CMD \| KBD_STAT_UNLOCKED;
80cabfad FB	340	}
80cabfad FB	341
675376f2 FB	342	static void kbd_save(QEMUFile* f, void* opaque)
	343	{
	344	KBDState s = (KBDState)opaque;
3b46e624	345
675376f2 FB	346	qemu_put_8s(f, &s->write_cmd);
	347	qemu_put_8s(f, &s->status);
	348	qemu_put_8s(f, &s->mode);
7783e9f0	349	qemu_put_8s(f, &s->pending);
675376f2 FB	350	}
	351
	352	static int kbd_load(QEMUFile* f, void* opaque, int version_id)
	353	{
	354	KBDState s = (KBDState)opaque;
3b46e624	355
7783e9f0	356	if (version_id != 3)
675376f2 FB	357	return -EINVAL;
	358	qemu_get_8s(f, &s->write_cmd);
	359	qemu_get_8s(f, &s->status);
	360	qemu_get_8s(f, &s->mode);
7783e9f0	361	qemu_get_8s(f, &s->pending);
675376f2 FB	362	return 0;
	363	}
	364
d537cf6c	365	void i8042_init(qemu_irq kbd_irq, qemu_irq mouse_irq, uint32_t io_base)
80cabfad	366	{
b41a2cd1	367	KBDState *s = &kbd_state;
b7678d96	368
d537cf6c PB	369	s->irq_kbd = kbd_irq;
d537cf6c PB	370	s->irq_mouse = mouse_irq;
b92bb99b	371
b41a2cd1	372	kbd_reset(s);
7783e9f0	373	register_savevm("pckbd", 0, 3, kbd_save, kbd_load, s);
b7678d96 TS	374	register_ioport_read(io_base, 1, 1, kbd_read_data, s);
	375	register_ioport_write(io_base, 1, 1, kbd_write_data, s);
	376	register_ioport_read(io_base + 4, 1, 1, kbd_read_status, s);
	377	register_ioport_write(io_base + 4, 1, 1, kbd_write_command, s);
63066f4f	378
daa57963 FB	379	s->kbd = ps2_kbd_init(kbd_update_kbd_irq, s);
daa57963 FB	380	s->mouse = ps2_mouse_init(kbd_update_aux_irq, s);
548df2ac TS	381	#ifdef TARGET_I386
	382	vmmouse_init(s->mouse);
	383	#endif
a08d4367	384	qemu_register_reset(kbd_reset, s);
80cabfad	385	}
b92bb99b TS	386
b92bb99b TS	387	/* Memory mapped interface */
9596ebb7	388	static uint32_t kbd_mm_readb (void *opaque, target_phys_addr_t addr)
b92bb99b TS	389	{
	390	KBDState *s = opaque;
	391
4efbe58f	392	if (addr & s->mask)
80355292	393	return kbd_read_status(s, 0) & 0xff;
4efbe58f AJ	394	else
4efbe58f AJ	395	return kbd_read_data(s, 0) & 0xff;
b92bb99b TS	396	}
b92bb99b TS	397
9596ebb7	398	static void kbd_mm_writeb (void *opaque, target_phys_addr_t addr, uint32_t value)
b92bb99b TS	399	{
	400	KBDState *s = opaque;
	401
4efbe58f	402	if (addr & s->mask)
80355292	403	kbd_write_command(s, 0, value & 0xff);
4efbe58f AJ	404	else
4efbe58f AJ	405	kbd_write_data(s, 0, value & 0xff);
b92bb99b TS	406	}
	407
	408	static CPUReadMemoryFunc *kbd_mm_read[] = {
	409	&kbd_mm_readb,
	410	&kbd_mm_readb,
	411	&kbd_mm_readb,
	412	};
	413
	414	static CPUWriteMemoryFunc *kbd_mm_write[] = {
	415	&kbd_mm_writeb,
	416	&kbd_mm_writeb,
	417	&kbd_mm_writeb,
	418	};
	419
71db710f	420	void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq,
4efbe58f AJ	421	target_phys_addr_t base, ram_addr_t size,
4efbe58f AJ	422	target_phys_addr_t mask)
b92bb99b TS	423	{
	424	KBDState *s = &kbd_state;
	425	int s_io_memory;
	426
	427	s->irq_kbd = kbd_irq;
	428	s->irq_mouse = mouse_irq;
4efbe58f	429	s->mask = mask;
b92bb99b TS	430
	431	kbd_reset(s);
	432	register_savevm("pckbd", 0, 3, kbd_save, kbd_load, s);
1eed09cb	433	s_io_memory = cpu_register_io_memory(kbd_mm_read, kbd_mm_write, s);
4efbe58f	434	cpu_register_physical_memory(base, size, s_io_memory);
b92bb99b TS	435
	436	s->kbd = ps2_kbd_init(kbd_update_kbd_irq, s);
	437	s->mouse = ps2_mouse_init(kbd_update_aux_irq, s);
	438	#ifdef TARGET_I386
	439	vmmouse_init(s->mouse);
	440	#endif
a08d4367	441	qemu_register_reset(kbd_reset, s);
b92bb99b	442	}