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qemu/hw/input/pckbd.c
Philippe Mathieu-Daudé 40f27a785f hw/input/pckbd: Open-code i8042_setup_a20_line() wrapper 
Since the named GPIO lines are a "public" interface to the device,
we can directly call qdev_connect_gpio_out_named(), making it
consistent with how the other A20 input source (port92) is wired.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Yanan Wang <wangyanan55@huawei.com>
Message-Id: <20211218130437.1516929-6-f4bug@amsat.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-02-22 12:47:35 +01:00

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/*
* 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 "qemu/osdep.h"
#include "qemu/error-report.h"
#include "qemu/log.h"
#include "qemu/timer.h"
#include "qapi/error.h"
#include "hw/isa/isa.h"
#include "migration/vmstate.h"
#include "hw/acpi/acpi_aml_interface.h"
#include "hw/input/ps2.h"
#include "hw/irq.h"
#include "hw/input/i8042.h"
#include "hw/qdev-properties.h"
#include "sysemu/reset.h"
#include "sysemu/runstate.h"
#include "trace.h"
/* Keyboard Controller Commands */
/* Read mode bits */
#define KBD_CCMD_READ_MODE 0x20
/* Write mode bits */
#define KBD_CCMD_WRITE_MODE 0x60
/* Get controller version */
#define KBD_CCMD_GET_VERSION 0xA1
/* Disable mouse interface */
#define KBD_CCMD_MOUSE_DISABLE 0xA7
/* Enable mouse interface */
#define KBD_CCMD_MOUSE_ENABLE 0xA8
/* Mouse interface test */
#define KBD_CCMD_TEST_MOUSE 0xA9
/* Controller self test */
#define KBD_CCMD_SELF_TEST 0xAA
/* Keyboard interface test */
#define KBD_CCMD_KBD_TEST 0xAB
/* Keyboard interface disable */
#define KBD_CCMD_KBD_DISABLE 0xAD
/* Keyboard interface enable */
#define KBD_CCMD_KBD_ENABLE 0xAE
/* read input port */
#define KBD_CCMD_READ_INPORT 0xC0
/* read output port */
#define KBD_CCMD_READ_OUTPORT 0xD0
/* write output port */
#define KBD_CCMD_WRITE_OUTPORT 0xD1
#define KBD_CCMD_WRITE_OBUF 0xD2
/* Write to output buffer as if initiated by the auxiliary device */
#define KBD_CCMD_WRITE_AUX_OBUF 0xD3
/* Write the following byte to the mouse */
#define KBD_CCMD_WRITE_MOUSE 0xD4
/* HP vectra only ? */
#define KBD_CCMD_DISABLE_A20 0xDD
/* HP vectra only ? */
#define KBD_CCMD_ENABLE_A20 0xDF
/* Pulse bits 3-0 of the output port P2. */
#define KBD_CCMD_PULSE_BITS_3_0 0xF0
/* Pulse bit 0 of the output port P2 = CPU reset. */
#define KBD_CCMD_RESET 0xFE
/* Pulse no bits of the output port P2. */
#define KBD_CCMD_NO_OP 0xFF
/* Status Register Bits */
/* Keyboard output buffer full */
#define KBD_STAT_OBF 0x01
/* Keyboard input buffer full */
#define KBD_STAT_IBF 0x02
/* Self test successful */
#define KBD_STAT_SELFTEST 0x04
/* Last write was a command write (0=data) */
#define KBD_STAT_CMD 0x08
/* Zero if keyboard locked */
#define KBD_STAT_UNLOCKED 0x10
/* Mouse output buffer full */
#define KBD_STAT_MOUSE_OBF 0x20
/* General receive/xmit timeout */
#define KBD_STAT_GTO 0x40
/* Parity error */
#define KBD_STAT_PERR 0x80
/* Controller Mode Register Bits */
/* Keyboard data generate IRQ1 */
#define KBD_MODE_KBD_INT 0x01
/* Mouse data generate IRQ12 */
#define KBD_MODE_MOUSE_INT 0x02
/* The system flag (?) */
#define KBD_MODE_SYS 0x04
/* The keylock doesn't affect the keyboard if set */
#define KBD_MODE_NO_KEYLOCK 0x08
/* Disable keyboard interface */
#define KBD_MODE_DISABLE_KBD 0x10
/* Disable mouse interface */
#define KBD_MODE_DISABLE_MOUSE 0x20
/* Scan code conversion to PC format */
#define KBD_MODE_KCC 0x40
#define KBD_MODE_RFU 0x80
/* Output Port Bits */
#define KBD_OUT_RESET 0x01 /* 1=normal mode, 0=reset */
#define KBD_OUT_A20 0x02 /* x86 only */
#define KBD_OUT_OBF 0x10 /* Keyboard output buffer full */
#define KBD_OUT_MOUSE_OBF 0x20 /* Mouse output buffer full */
/*
* OSes typically write 0xdd/0xdf to turn the A20 line off and on.
* We make the default value of the outport include these four bits,
* so that the subsection is rarely necessary.
*/
#define KBD_OUT_ONES 0xcc
#define KBD_PENDING_KBD_COMPAT 0x01
#define KBD_PENDING_AUX_COMPAT 0x02
#define KBD_PENDING_CTRL_KBD 0x04
#define KBD_PENDING_CTRL_AUX 0x08
#define KBD_PENDING_KBD KBD_MODE_DISABLE_KBD /* 0x10 */
#define KBD_PENDING_AUX KBD_MODE_DISABLE_MOUSE /* 0x20 */
#define KBD_MIGR_TIMER_PENDING 0x1
#define KBD_OBSRC_KBD 0x01
#define KBD_OBSRC_MOUSE 0x02
#define KBD_OBSRC_CTRL 0x04
/*
* 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_lines(KBDState *s)
{
int irq_kbd_level, irq_mouse_level;
irq_kbd_level = 0;
irq_mouse_level = 0;
if (s->status & KBD_STAT_OBF) {
if (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->irqs[I8042_KBD_IRQ], irq_kbd_level);
qemu_set_irq(s->irqs[I8042_MOUSE_IRQ], irq_mouse_level);
}
static void kbd_deassert_irq(KBDState *s)
{
s->status &= ~(KBD_STAT_OBF | KBD_STAT_MOUSE_OBF);
s->outport &= ~(KBD_OUT_OBF | KBD_OUT_MOUSE_OBF);
kbd_update_irq_lines(s);
}
static uint8_t kbd_pending(KBDState *s)
{
if (s->extended_state) {
return s->pending & (~s->mode | ~(KBD_PENDING_KBD | KBD_PENDING_AUX));
} else {
return s->pending;
}
}
/* update irq and KBD_STAT_[MOUSE_]OBF */
static void kbd_update_irq(KBDState *s)
{
uint8_t pending = kbd_pending(s);
s->status &= ~(KBD_STAT_OBF | KBD_STAT_MOUSE_OBF);
s->outport &= ~(KBD_OUT_OBF | KBD_OUT_MOUSE_OBF);
if (pending) {
s->status |= KBD_STAT_OBF;
s->outport |= KBD_OUT_OBF;
if (pending & KBD_PENDING_CTRL_KBD) {
s->obsrc = KBD_OBSRC_CTRL;
} else if (pending & KBD_PENDING_CTRL_AUX) {
s->status |= KBD_STAT_MOUSE_OBF;
s->outport |= KBD_OUT_MOUSE_OBF;
s->obsrc = KBD_OBSRC_CTRL;
} else if (pending & KBD_PENDING_KBD) {
s->obsrc = KBD_OBSRC_KBD;
} else {
s->status |= KBD_STAT_MOUSE_OBF;
s->outport |= KBD_OUT_MOUSE_OBF;
s->obsrc = KBD_OBSRC_MOUSE;
}
}
kbd_update_irq_lines(s);
}
static void kbd_safe_update_irq(KBDState *s)
{
/*
* with KBD_STAT_OBF set, a call to kbd_read_data() will eventually call
* kbd_update_irq()
*/
if (s->status & KBD_STAT_OBF) {
return;
}
/* the throttle timer is pending and will call kbd_update_irq() */
if (s->throttle_timer && timer_pending(s->throttle_timer)) {
return;
}
if (kbd_pending(s)) {
kbd_update_irq(s);
}
}
static void kbd_update_kbd_irq(void *opaque, int level)
{
KBDState *s = opaque;
if (level) {
s->pending |= KBD_PENDING_KBD;
} else {
s->pending &= ~KBD_PENDING_KBD;
}
kbd_safe_update_irq(s);
}
static void kbd_update_aux_irq(void *opaque, int level)
{
KBDState *s = opaque;
if (level) {
s->pending |= KBD_PENDING_AUX;
} else {
s->pending &= ~KBD_PENDING_AUX;
}
kbd_safe_update_irq(s);
}
static void kbd_throttle_timeout(void *opaque)
{
KBDState *s = opaque;
if (kbd_pending(s)) {
kbd_update_irq(s);
}
}
static uint64_t kbd_read_status(void *opaque, hwaddr addr,
unsigned size)
{
KBDState *s = opaque;
int val;
val = s->status;
trace_pckbd_kbd_read_status(val);
return val;
}
static void kbd_queue(KBDState *s, int b, int aux)
{
if (s->extended_state) {
s->cbdata = b;
s->pending &= ~KBD_PENDING_CTRL_KBD & ~KBD_PENDING_CTRL_AUX;
s->pending |= aux ? KBD_PENDING_CTRL_AUX : KBD_PENDING_CTRL_KBD;
kbd_safe_update_irq(s);
} else {
ps2_queue(aux ? PS2_DEVICE(&s->ps2mouse) : PS2_DEVICE(&s->ps2kbd), b);
}
}
static uint8_t kbd_dequeue(KBDState *s)
{
uint8_t b = s->cbdata;
s->pending &= ~KBD_PENDING_CTRL_KBD & ~KBD_PENDING_CTRL_AUX;
if (kbd_pending(s)) {
kbd_update_irq(s);
}
return b;
}
static void outport_write(KBDState *s, uint32_t val)
{
trace_pckbd_outport_write(val);
s->outport = val;
qemu_set_irq(s->a20_out, (val >> 1) & 1);
if (!(val & 1)) {
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
}
}
static void kbd_write_command(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
KBDState *s = opaque;
trace_pckbd_kbd_write_command(val);
/*
* Bits 3-0 of the output port P2 of the keyboard controller may be pulsed
* low for approximately 6 micro seconds. Bits 3-0 of the KBD_CCMD_PULSE
* command specify the output port bits to be pulsed.
* 0: Bit should be pulsed. 1: Bit should not be modified.
* The only useful version of this command is pulsing bit 0,
* which does a CPU reset.
*/
if ((val & KBD_CCMD_PULSE_BITS_3_0) == KBD_CCMD_PULSE_BITS_3_0) {
if (!(val & 1)) {
val = KBD_CCMD_RESET;
} else {
val = KBD_CCMD_NO_OP;
}
}
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;
kbd_safe_update_irq(s);
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;
break;
case KBD_CCMD_KBD_ENABLE:
s->mode &= ~KBD_MODE_DISABLE_KBD;
kbd_safe_update_irq(s);
break;
case KBD_CCMD_READ_INPORT:
kbd_queue(s, 0x80, 0);
break;
case KBD_CCMD_READ_OUTPORT:
kbd_queue(s, s->outport, 0);
break;
case KBD_CCMD_ENABLE_A20:
qemu_irq_raise(s->a20_out);
s->outport |= KBD_OUT_A20;
break;
case KBD_CCMD_DISABLE_A20:
qemu_irq_lower(s->a20_out);
s->outport &= ~KBD_OUT_A20;
break;
case KBD_CCMD_RESET:
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
break;
case KBD_CCMD_NO_OP:
/* ignore that */
break;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"unsupported keyboard cmd=0x%02" PRIx64 "\n", val);
break;
}
}
static uint64_t kbd_read_data(void *opaque, hwaddr addr,
unsigned size)
{
KBDState *s = opaque;
if (s->status & KBD_STAT_OBF) {
kbd_deassert_irq(s);
if (s->obsrc & KBD_OBSRC_KBD) {
if (s->throttle_timer) {
timer_mod(s->throttle_timer,
qemu_clock_get_us(QEMU_CLOCK_VIRTUAL) + 1000);
}
s->obdata = ps2_read_data(PS2_DEVICE(&s->ps2kbd));
} else if (s->obsrc & KBD_OBSRC_MOUSE) {
s->obdata = ps2_read_data(PS2_DEVICE(&s->ps2mouse));
} else if (s->obsrc & KBD_OBSRC_CTRL) {
s->obdata = kbd_dequeue(s);
}
}
trace_pckbd_kbd_read_data(s->obdata);
return s->obdata;
}
static void kbd_write_data(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
KBDState *s = opaque;
trace_pckbd_kbd_write_data(val);
switch (s->write_cmd) {
case 0:
ps2_write_keyboard(&s->ps2kbd, val);
/* sending data to the keyboard reenables PS/2 communication */
s->mode &= ~KBD_MODE_DISABLE_KBD;
kbd_safe_update_irq(s);
break;
case KBD_CCMD_WRITE_MODE:
s->mode = val;
ps2_keyboard_set_translation(&s->ps2kbd,
(s->mode & KBD_MODE_KCC) != 0);
/*
* a write to the mode byte interrupt enable flags directly updates
* the irq lines
*/
kbd_update_irq_lines(s);
/*
* a write to the mode byte disable interface flags may raise
* an irq if there is pending data in the PS/2 queues.
*/
kbd_safe_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:
outport_write(s, val);
break;
case KBD_CCMD_WRITE_MOUSE:
ps2_write_mouse(&s->ps2mouse, val);
/* sending data to the mouse reenables PS/2 communication */
s->mode &= ~KBD_MODE_DISABLE_MOUSE;
kbd_safe_update_irq(s);
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;
s->outport = KBD_OUT_RESET | KBD_OUT_A20 | KBD_OUT_ONES;
s->pending = 0;
kbd_deassert_irq(s);
if (s->throttle_timer) {
timer_del(s->throttle_timer);
}
}
static uint8_t kbd_outport_default(KBDState *s)
{
return KBD_OUT_RESET | KBD_OUT_A20 | KBD_OUT_ONES
| (s->status & KBD_STAT_OBF ? KBD_OUT_OBF : 0)
| (s->status & KBD_STAT_MOUSE_OBF ? KBD_OUT_MOUSE_OBF : 0);
}
static int kbd_outport_post_load(void *opaque, int version_id)
{
KBDState *s = opaque;
s->outport_present = true;
return 0;
}
static bool kbd_outport_needed(void *opaque)
{
KBDState *s = opaque;
return s->outport != kbd_outport_default(s);
}
static const VMStateDescription vmstate_kbd_outport = {
.name = "pckbd_outport",
.version_id = 1,
.minimum_version_id = 1,
.post_load = kbd_outport_post_load,
.needed = kbd_outport_needed,
.fields = (const VMStateField[]) {
VMSTATE_UINT8(outport, KBDState),
VMSTATE_END_OF_LIST()
}
};
static int kbd_extended_state_pre_save(void *opaque)
{
KBDState *s = opaque;
s->migration_flags = 0;
if (s->throttle_timer && timer_pending(s->throttle_timer)) {
s->migration_flags |= KBD_MIGR_TIMER_PENDING;
}
return 0;
}
static int kbd_extended_state_post_load(void *opaque, int version_id)
{
KBDState *s = opaque;
if (s->migration_flags & KBD_MIGR_TIMER_PENDING) {
kbd_throttle_timeout(s);
}
s->extended_state_loaded = true;
return 0;
}
static bool kbd_extended_state_needed(void *opaque)
{
KBDState *s = opaque;
return s->extended_state;
}
static const VMStateDescription vmstate_kbd_extended_state = {
.name = "pckbd/extended_state",
.post_load = kbd_extended_state_post_load,
.pre_save = kbd_extended_state_pre_save,
.needed = kbd_extended_state_needed,
.fields = (const VMStateField[]) {
VMSTATE_UINT32(migration_flags, KBDState),
VMSTATE_UINT32(obsrc, KBDState),
VMSTATE_UINT8(obdata, KBDState),
VMSTATE_UINT8(cbdata, KBDState),
VMSTATE_END_OF_LIST()
}
};
static int kbd_pre_save(void *opaque)
{
KBDState *s = opaque;
if (s->extended_state) {
s->pending_tmp = s->pending;
} else {
s->pending_tmp = 0;
if (s->pending & KBD_PENDING_KBD) {
s->pending_tmp |= KBD_PENDING_KBD_COMPAT;
}
if (s->pending & KBD_PENDING_AUX) {
s->pending_tmp |= KBD_PENDING_AUX_COMPAT;
}
}
return 0;
}
static int kbd_pre_load(void *opaque)
{
KBDState *s = opaque;
s->outport_present = false;
s->extended_state_loaded = false;
return 0;
}
static int kbd_post_load(void *opaque, int version_id)
{
KBDState *s = opaque;
if (!s->outport_present) {
s->outport = kbd_outport_default(s);
}
s->pending = s->pending_tmp;
if (!s->extended_state_loaded) {
s->obsrc = s->status & KBD_STAT_OBF ?
(s->status & KBD_STAT_MOUSE_OBF ? KBD_OBSRC_MOUSE : KBD_OBSRC_KBD) :
0;
if (s->pending & KBD_PENDING_KBD_COMPAT) {
s->pending |= KBD_PENDING_KBD;
}
if (s->pending & KBD_PENDING_AUX_COMPAT) {
s->pending |= KBD_PENDING_AUX;
}
}
/* clear all unused flags */
s->pending &= KBD_PENDING_CTRL_KBD | KBD_PENDING_CTRL_AUX |
KBD_PENDING_KBD | KBD_PENDING_AUX;
return 0;
}
static const VMStateDescription vmstate_kbd = {
.name = "pckbd",
.version_id = 3,
.minimum_version_id = 3,
.pre_load = kbd_pre_load,
.post_load = kbd_post_load,
.pre_save = kbd_pre_save,
.fields = (const VMStateField[]) {
VMSTATE_UINT8(write_cmd, KBDState),
VMSTATE_UINT8(status, KBDState),
VMSTATE_UINT8(mode, KBDState),
VMSTATE_UINT8(pending_tmp, KBDState),
VMSTATE_END_OF_LIST()
},
.subsections = (const VMStateDescription * const []) {
&vmstate_kbd_outport,
&vmstate_kbd_extended_state,
NULL
}
};
/* Memory mapped interface */
static uint64_t kbd_mm_readfn(void *opaque, hwaddr addr, unsigned size)
{
KBDState *s = opaque;
if (addr & s->mask) {
return kbd_read_status(s, 0, 1) & 0xff;
} else {
return kbd_read_data(s, 0, 1) & 0xff;
}
}
static void kbd_mm_writefn(void *opaque, hwaddr addr,
uint64_t value, unsigned size)
{
KBDState *s = opaque;
if (addr & s->mask) {
kbd_write_command(s, 0, value & 0xff, 1);
} else {
kbd_write_data(s, 0, value & 0xff, 1);
}
}
static const MemoryRegionOps i8042_mmio_ops = {
.read = kbd_mm_readfn,
.write = kbd_mm_writefn,
.valid.min_access_size = 1,
.valid.max_access_size = 4,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void i8042_mmio_set_kbd_irq(void *opaque, int n, int level)
{
MMIOKBDState *s = I8042_MMIO(opaque);
KBDState *ks = &s->kbd;
kbd_update_kbd_irq(ks, level);
}
static void i8042_mmio_set_mouse_irq(void *opaque, int n, int level)
{
MMIOKBDState *s = I8042_MMIO(opaque);
KBDState *ks = &s->kbd;
kbd_update_aux_irq(ks, level);
}
static void i8042_mmio_reset(DeviceState *dev)
{
MMIOKBDState *s = I8042_MMIO(dev);
KBDState *ks = &s->kbd;
kbd_reset(ks);
}
static void i8042_mmio_realize(DeviceState *dev, Error **errp)
{
MMIOKBDState *s = I8042_MMIO(dev);
KBDState *ks = &s->kbd;
memory_region_init_io(&s->region, OBJECT(dev), &i8042_mmio_ops, ks,
"i8042", s->size);
sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->region);
if (!sysbus_realize(SYS_BUS_DEVICE(&ks->ps2kbd), errp)) {
return;
}
if (!sysbus_realize(SYS_BUS_DEVICE(&ks->ps2mouse), errp)) {
return;
}
qdev_connect_gpio_out(DEVICE(&ks->ps2kbd), PS2_DEVICE_IRQ,
qdev_get_gpio_in_named(dev, "ps2-kbd-input-irq",
0));
qdev_connect_gpio_out(DEVICE(&ks->ps2mouse), PS2_DEVICE_IRQ,
qdev_get_gpio_in_named(dev, "ps2-mouse-input-irq",
0));
}
static void i8042_mmio_init(Object *obj)
{
MMIOKBDState *s = I8042_MMIO(obj);
KBDState *ks = &s->kbd;
ks->extended_state = true;
object_initialize_child(obj, "ps2kbd", &ks->ps2kbd, TYPE_PS2_KBD_DEVICE);
object_initialize_child(obj, "ps2mouse", &ks->ps2mouse,
TYPE_PS2_MOUSE_DEVICE);
qdev_init_gpio_out(DEVICE(obj), ks->irqs, 2);
qdev_init_gpio_in_named(DEVICE(obj), i8042_mmio_set_kbd_irq,
"ps2-kbd-input-irq", 1);
qdev_init_gpio_in_named(DEVICE(obj), i8042_mmio_set_mouse_irq,
"ps2-mouse-input-irq", 1);
}
static Property i8042_mmio_properties[] = {
DEFINE_PROP_UINT64("mask", MMIOKBDState, kbd.mask, UINT64_MAX),
DEFINE_PROP_UINT32("size", MMIOKBDState, size, -1),
DEFINE_PROP_END_OF_LIST(),
};
static const VMStateDescription vmstate_kbd_mmio = {
.name = "pckbd-mmio",
.version_id = 1,
.minimum_version_id = 1,
.fields = (const VMStateField[]) {
VMSTATE_STRUCT(kbd, MMIOKBDState, 0, vmstate_kbd, KBDState),
VMSTATE_END_OF_LIST()
}
};
static void i8042_mmio_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = i8042_mmio_realize;
dc->reset = i8042_mmio_reset;
dc->vmsd = &vmstate_kbd_mmio;
device_class_set_props(dc, i8042_mmio_properties);
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
}
static const TypeInfo i8042_mmio_info = {
.name = TYPE_I8042_MMIO,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_init = i8042_mmio_init,
.instance_size = sizeof(MMIOKBDState),
.class_init = i8042_mmio_class_init
};
void i8042_isa_mouse_fake_event(ISAKBDState *isa)
{
KBDState *s = &isa->kbd;
ps2_mouse_fake_event(&s->ps2mouse);
}
static const VMStateDescription vmstate_kbd_isa = {
.name = "pckbd",
.version_id = 3,
.minimum_version_id = 3,
.fields = (const VMStateField[]) {
VMSTATE_STRUCT(kbd, ISAKBDState, 0, vmstate_kbd, KBDState),
VMSTATE_END_OF_LIST()
}
};
static const MemoryRegionOps i8042_data_ops = {
.read = kbd_read_data,
.write = kbd_write_data,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
},
.endianness = DEVICE_LITTLE_ENDIAN,
};
static const MemoryRegionOps i8042_cmd_ops = {
.read = kbd_read_status,
.write = kbd_write_command,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
},
.endianness = DEVICE_LITTLE_ENDIAN,
};
static void i8042_set_kbd_irq(void *opaque, int n, int level)
{
ISAKBDState *s = I8042(opaque);
KBDState *ks = &s->kbd;
kbd_update_kbd_irq(ks, level);
}
static void i8042_set_mouse_irq(void *opaque, int n, int level)
{
ISAKBDState *s = I8042(opaque);
KBDState *ks = &s->kbd;
kbd_update_aux_irq(ks, level);
}
static void i8042_reset(DeviceState *dev)
{
ISAKBDState *s = I8042(dev);
KBDState *ks = &s->kbd;
kbd_reset(ks);
}
static void i8042_initfn(Object *obj)
{
ISAKBDState *isa_s = I8042(obj);
KBDState *s = &isa_s->kbd;
memory_region_init_io(isa_s->io + 0, obj, &i8042_data_ops, s,
"i8042-data", 1);
memory_region_init_io(isa_s->io + 1, obj, &i8042_cmd_ops, s,
"i8042-cmd", 1);
object_initialize_child(obj, "ps2kbd", &s->ps2kbd, TYPE_PS2_KBD_DEVICE);
object_initialize_child(obj, "ps2mouse", &s->ps2mouse,
TYPE_PS2_MOUSE_DEVICE);
qdev_init_gpio_out_named(DEVICE(obj), &s->a20_out, I8042_A20_LINE, 1);
qdev_init_gpio_out(DEVICE(obj), s->irqs, 2);
qdev_init_gpio_in_named(DEVICE(obj), i8042_set_kbd_irq,
"ps2-kbd-input-irq", 1);
qdev_init_gpio_in_named(DEVICE(obj), i8042_set_mouse_irq,
"ps2-mouse-input-irq", 1);
}
static void i8042_realizefn(DeviceState *dev, Error **errp)
{
ISADevice *isadev = ISA_DEVICE(dev);
ISAKBDState *isa_s = I8042(dev);
KBDState *s = &isa_s->kbd;
if (isa_s->kbd_irq >= ISA_NUM_IRQS) {
error_setg(errp, "Maximum value for \"kbd-irq\" is: %u",
ISA_NUM_IRQS - 1);
return;
}
if (isa_s->mouse_irq >= ISA_NUM_IRQS) {
error_setg(errp, "Maximum value for \"mouse-irq\" is: %u",
ISA_NUM_IRQS - 1);
return;
}
isa_connect_gpio_out(isadev, I8042_KBD_IRQ, isa_s->kbd_irq);
isa_connect_gpio_out(isadev, I8042_MOUSE_IRQ, isa_s->mouse_irq);
isa_register_ioport(isadev, isa_s->io + 0, 0x60);
isa_register_ioport(isadev, isa_s->io + 1, 0x64);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->ps2kbd), errp)) {
return;
}
qdev_connect_gpio_out(DEVICE(&s->ps2kbd), PS2_DEVICE_IRQ,
qdev_get_gpio_in_named(dev, "ps2-kbd-input-irq",
0));
if (!sysbus_realize(SYS_BUS_DEVICE(&s->ps2mouse), errp)) {
return;
}
qdev_connect_gpio_out(DEVICE(&s->ps2mouse), PS2_DEVICE_IRQ,
qdev_get_gpio_in_named(dev, "ps2-mouse-input-irq",
0));
if (isa_s->kbd_throttle && !isa_s->kbd.extended_state) {
warn_report(TYPE_I8042 ": can't enable kbd-throttle without"
" extended-state, disabling kbd-throttle");
} else if (isa_s->kbd_throttle) {
s->throttle_timer = timer_new_us(QEMU_CLOCK_VIRTUAL,
kbd_throttle_timeout, s);
}
}
static void i8042_build_aml(AcpiDevAmlIf *adev, Aml *scope)
{
ISAKBDState *isa_s = I8042(adev);
Aml *kbd;
Aml *mou;
Aml *crs;
crs = aml_resource_template();
aml_append(crs, aml_io(AML_DECODE16, 0x0060, 0x0060, 0x01, 0x01));
aml_append(crs, aml_io(AML_DECODE16, 0x0064, 0x0064, 0x01, 0x01));
aml_append(crs, aml_irq_no_flags(isa_s->kbd_irq));
kbd = aml_device("KBD");
aml_append(kbd, aml_name_decl("_HID", aml_eisaid("PNP0303")));
aml_append(kbd, aml_name_decl("_STA", aml_int(0xf)));
aml_append(kbd, aml_name_decl("_CRS", crs));
crs = aml_resource_template();
aml_append(crs, aml_irq_no_flags(isa_s->mouse_irq));
mou = aml_device("MOU");
aml_append(mou, aml_name_decl("_HID", aml_eisaid("PNP0F13")));
aml_append(mou, aml_name_decl("_STA", aml_int(0xf)));
aml_append(mou, aml_name_decl("_CRS", crs));
aml_append(scope, kbd);
aml_append(scope, mou);
}
static Property i8042_properties[] = {
DEFINE_PROP_BOOL("extended-state", ISAKBDState, kbd.extended_state, true),
DEFINE_PROP_BOOL("kbd-throttle", ISAKBDState, kbd_throttle, false),
DEFINE_PROP_UINT8("kbd-irq", ISAKBDState, kbd_irq, 1),
DEFINE_PROP_UINT8("mouse-irq", ISAKBDState, mouse_irq, 12),
DEFINE_PROP_END_OF_LIST(),
};
static void i8042_class_initfn(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
AcpiDevAmlIfClass *adevc = ACPI_DEV_AML_IF_CLASS(klass);
device_class_set_props(dc, i8042_properties);
dc->reset = i8042_reset;
dc->realize = i8042_realizefn;
dc->vmsd = &vmstate_kbd_isa;
adevc->build_dev_aml = i8042_build_aml;
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
}
static const TypeInfo i8042_info = {
.name = TYPE_I8042,
.parent = TYPE_ISA_DEVICE,
.instance_size = sizeof(ISAKBDState),
.instance_init = i8042_initfn,
.class_init = i8042_class_initfn,
.interfaces = (InterfaceInfo[]) {
{ TYPE_ACPI_DEV_AML_IF },
{ },
},
};
static void i8042_register_types(void)
{
type_register_static(&i8042_info);
type_register_static(&i8042_mmio_info);
}
type_init(i8042_register_types)
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