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hppa: add emulation of LASI PS2 controllers

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Signed-off-by: Sven Schnelle <svens@stackframe.org>
Message-Id: <20191220211512.3289-5-svens@stackframe.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Sven Schnelle 2019-12-20 22:15:10 +01:00 committed by Richard Henderson
parent c56b620918
commit 2a6505b0e7
9 changed files with 332 additions and 1 deletions
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1
hw/hppa/Kconfig
View File

@ -11,3 +11,4 @@ config DINO
select MC146818RTC
select LSI_SCSI_PCI
select LASI_82596
select LASIPS2

10
hw/hppa/lasi.c
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@ -22,6 +22,7 @@
#include "hw/net/lasi_82596.h"
#include "hw/char/parallel.h"
#include "hw/char/serial.h"
#include "hw/input/lasips2.h"
#include "exec/address-spaces.h"
#include "migration/vmstate.h"
@ -324,6 +325,7 @@ DeviceState *lasi_init(MemoryRegion *address_space)
lpt_irq, parallel_hds[0]);
/* Real time clock (RTC), it's only one 32-bit counter @9000 */
s->rtc = time(NULL);
s->rtc_ref = 0;
@ -333,8 +335,14 @@ DeviceState *lasi_init(MemoryRegion *address_space)
lasi_get_irq(LASI_UART_HPA));
serial_mm_init(address_space, LASI_UART_HPA + 0x800, 0,
serial_irq, 8000000 / 16,
serial_hd(1), DEVICE_NATIVE_ENDIAN);
serial_hd(0), DEVICE_NATIVE_ENDIAN);
}
/* PS/2 Keyboard/Mouse */
qemu_irq ps2kbd_irq = qemu_allocate_irq(lasi_set_irq, s,
lasi_get_irq(LASI_PS2KBD_HPA));
lasips2_init(address_space, LASI_PS2KBD_HPA, ps2kbd_irq);
return dev;
}

3
hw/input/Kconfig
View File

@ -41,3 +41,6 @@ config VHOST_USER_INPUT
config TSC210X
bool
config LASIPS2
select PS2

1
hw/input/Makefile.objs
View File

@ -15,3 +15,4 @@ common-obj-$(CONFIG_VHOST_USER_INPUT) += vhost-user-input.o
obj-$(CONFIG_MILKYMIST) += milkymist-softusb.o
obj-$(CONFIG_PXA2XX) += pxa2xx_keypad.o
obj-$(CONFIG_TSC210X) += tsc210x.o
obj-$(CONFIG_LASIPS2) += lasips2.o

291
hw/input/lasips2.c Normal file
View File

@ -0,0 +1,291 @@
/*
* QEMU HP Lasi PS/2 interface emulation
*
* Copyright (c) 2019 Sven Schnelle
*
* 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/log.h"
#include "hw/qdev-properties.h"
#include "hw/hw.h"
#include "hw/input/ps2.h"
#include "hw/input/lasips2.h"
#include "hw/sysbus.h"
#include "exec/hwaddr.h"
#include "sysemu/sysemu.h"
#include "trace.h"
#include "exec/address-spaces.h"
#include "migration/vmstate.h"
#include "hw/irq.h"
struct LASIPS2State;
typedef struct LASIPS2Port {
struct LASIPS2State *parent;
MemoryRegion reg;
void *dev;
uint8_t id;
uint8_t control;
uint8_t buf;
bool loopback_rbne;
bool irq;
} LASIPS2Port;
typedef struct LASIPS2State {
LASIPS2Port kbd;
LASIPS2Port mouse;
qemu_irq irq;
} LASIPS2State;
static const VMStateDescription vmstate_lasips2 = {
.name = "lasips2",
.version_id = 0,
.minimum_version_id = 0,
.fields = (VMStateField[]) {
VMSTATE_UINT8(kbd.control, LASIPS2State),
VMSTATE_UINT8(kbd.id, LASIPS2State),
VMSTATE_BOOL(kbd.irq, LASIPS2State),
VMSTATE_UINT8(mouse.control, LASIPS2State),
VMSTATE_UINT8(mouse.id, LASIPS2State),
VMSTATE_BOOL(mouse.irq, LASIPS2State),
VMSTATE_END_OF_LIST()
}
};
typedef enum {
REG_PS2_ID = 0,
REG_PS2_RCVDATA = 4,
REG_PS2_CONTROL = 8,
REG_PS2_STATUS = 12,
} lasips2_read_reg_t;
typedef enum {
REG_PS2_RESET = 0,
REG_PS2_XMTDATA = 4,
} lasips2_write_reg_t;
typedef enum {
LASIPS2_CONTROL_ENABLE = 0x01,
LASIPS2_CONTROL_LOOPBACK = 0x02,
LASIPS2_CONTROL_DIAG = 0x20,
LASIPS2_CONTROL_DATDIR = 0x40,
LASIPS2_CONTROL_CLKDIR = 0x80,
} lasips2_control_reg_t;
typedef enum {
LASIPS2_STATUS_RBNE = 0x01,
LASIPS2_STATUS_TBNE = 0x02,
LASIPS2_STATUS_TERR = 0x04,
LASIPS2_STATUS_PERR = 0x08,
LASIPS2_STATUS_CMPINTR = 0x10,
LASIPS2_STATUS_DATSHD = 0x40,
LASIPS2_STATUS_CLKSHD = 0x80,
} lasips2_status_reg_t;
static const char *artist_read_reg_name(uint64_t addr)
{
switch (addr & 0xc) {
case REG_PS2_ID:
return " PS2_ID";
case REG_PS2_RCVDATA:
return " PS2_RCVDATA";
case REG_PS2_CONTROL:
return " PS2_CONTROL";
case REG_PS2_STATUS:
return " PS2_STATUS";
default:
return "";
}
}
static const char *artist_write_reg_name(uint64_t addr)
{
switch (addr & 0x0c) {
case REG_PS2_RESET:
return " PS2_RESET";
case REG_PS2_XMTDATA:
return " PS2_XMTDATA";
case REG_PS2_CONTROL:
return " PS2_CONTROL";
default:
return "";
}
}
static void lasips2_update_irq(LASIPS2State *s)
{
trace_lasips2_intr(s->kbd.irq | s->mouse.irq);
qemu_set_irq(s->irq, s->kbd.irq | s->mouse.irq);
}
static void lasips2_reg_write(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
LASIPS2Port *port = opaque;
trace_lasips2_reg_write(size, port->id, addr,
artist_write_reg_name(addr), val);
switch (addr & 0xc) {
case REG_PS2_CONTROL:
port->control = val;
break;
case REG_PS2_XMTDATA:
if (port->control & LASIPS2_CONTROL_LOOPBACK) {
port->buf = val;
port->irq = true;
port->loopback_rbne = true;
lasips2_update_irq(port->parent);
break;
}
if (port->id) {
ps2_write_mouse(port->dev, val);
} else {
ps2_write_keyboard(port->dev, val);
}
break;
case REG_PS2_RESET:
break;
default:
qemu_log_mask(LOG_UNIMP, "%s: unknown register 0x%02" HWADDR_PRIx "\n",
__func__, addr);
break;
}
}
static uint64_t lasips2_reg_read(void *opaque, hwaddr addr, unsigned size)
{
LASIPS2Port *port = opaque;
uint64_t ret = 0;
switch (addr & 0xc) {
case REG_PS2_ID:
ret = port->id;
break;
case REG_PS2_RCVDATA:
if (port->control & LASIPS2_CONTROL_LOOPBACK) {
port->irq = false;
port->loopback_rbne = false;
lasips2_update_irq(port->parent);
ret = port->buf;
break;
}
ret = ps2_read_data(port->dev);
break;
case REG_PS2_CONTROL:
ret = port->control;
break;
case REG_PS2_STATUS:
ret = LASIPS2_STATUS_DATSHD | LASIPS2_STATUS_CLKSHD;
if (port->control & LASIPS2_CONTROL_DIAG) {
if (!(port->control & LASIPS2_CONTROL_DATDIR)) {
ret &= ~LASIPS2_STATUS_DATSHD;
}
if (!(port->control & LASIPS2_CONTROL_CLKDIR)) {
ret &= ~LASIPS2_STATUS_CLKSHD;
}
}
if (port->control & LASIPS2_CONTROL_LOOPBACK) {
if (port->loopback_rbne) {
ret |= LASIPS2_STATUS_RBNE;
}
} else {
if (!ps2_queue_empty(port->dev)) {
ret |= LASIPS2_STATUS_RBNE;
}
}
if (port->parent->kbd.irq || port->parent->mouse.irq) {
ret |= LASIPS2_STATUS_CMPINTR;
}
break;
default:
qemu_log_mask(LOG_UNIMP, "%s: unknown register 0x%02" HWADDR_PRIx "\n",
__func__, addr);
break;
}
trace_lasips2_reg_read(size, port->id, addr,
artist_read_reg_name(addr), ret);
return ret;
}
static const MemoryRegionOps lasips2_reg_ops = {
.read = lasips2_reg_read,
.write = lasips2_reg_write,
.impl = {
.min_access_size = 1,
.max_access_size = 4,
},
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void ps2dev_update_irq(void *opaque, int level)
{
LASIPS2Port *port = opaque;
port->irq = level;
lasips2_update_irq(port->parent);
}
void lasips2_init(MemoryRegion *address_space,
hwaddr base, qemu_irq irq)
{
LASIPS2State *s;
s = g_malloc0(sizeof(LASIPS2State));
s->irq = irq;
s->mouse.id = 1;
s->kbd.parent = s;
s->mouse.parent = s;
vmstate_register(NULL, base, &vmstate_lasips2, s);
s->kbd.dev = ps2_kbd_init(ps2dev_update_irq, &s->kbd);
s->mouse.dev = ps2_mouse_init(ps2dev_update_irq, &s->mouse);
memory_region_init_io(&s->kbd.reg, NULL, &lasips2_reg_ops, &s->kbd,
"lasips2-kbd", 0x100);
memory_region_add_subregion(address_space, base, &s->kbd.reg);
memory_region_init_io(&s->mouse.reg, NULL, &lasips2_reg_ops, &s->mouse,
"lasips2-mouse", 0x100);
memory_region_add_subregion(address_space, base + 0x100, &s->mouse.reg);
}

5
hw/input/ps2.c
View File

@ -192,6 +192,11 @@ static void ps2_reset_queue(PS2State *s)
q->count = 0;
}
int ps2_queue_empty(PS2State *s)
{
return s->queue.count == 0;
}
void ps2_queue_noirq(PS2State *s, int b)
{
PS2Queue *q = &s->queue;

5
hw/input/trace-events
View File

@ -53,3 +53,8 @@ tsc2005_sense(const char *state) "touchscreen sense %s"
# virtio-input.c
virtio_input_queue_full(void) "queue full"
# lasips2.c
lasips2_reg_read(unsigned int size, int id, uint64_t addr, const char *name, uint64_t val) "%u %d addr 0x%"PRIx64 "%s -> 0x%"PRIx64
lasips2_reg_write(unsigned int size, int id, uint64_t addr, const char *name, uint64_t val) "%u %d addr 0x%"PRIx64 "%s <- 0x%"PRIx64
lasips2_intr(unsigned int val) "%d"

16
include/hw/input/lasips2.h Normal file
View File

@ -0,0 +1,16 @@
/*
* QEMU LASI PS/2 emulation
*
* Copyright (c) 2019 Sven Schnelle
*
*/
#ifndef HW_INPUT_LASIPS2_H
#define HW_INPUT_LASIPS2_H
#include "exec/hwaddr.h"
#define TYPE_LASIPS2 "lasips2"
void lasips2_init(MemoryRegion *address_space, hwaddr base, qemu_irq irq);
#endif /* HW_INPUT_LASIPS2_H */

1
include/hw/input/ps2.h
View File

@ -47,5 +47,6 @@ void ps2_queue_3(PS2State *s, int b1, int b2, int b3);
void ps2_queue_4(PS2State *s, int b1, int b2, int b3, int b4);
void ps2_keyboard_set_translation(void *opaque, int mode);
void ps2_mouse_fake_event(void *opaque);
int ps2_queue_empty(PS2State *s);
#endif /* HW_PS2_H */