qemu/hw/input/milkymist-softusb.c
Chetan Pant 61f3c91a67 nomaintainer: Fix Lesser GPL version number
There is no "version 2" of the "Lesser" General Public License.
It is either "GPL version 2.0" or "Lesser GPL version 2.1".
This patch replaces all occurrences of "Lesser GPL version 2" with
"Lesser GPL version 2.1" in comment section.

This patch contains all the files, whose maintainer I could not get
from ‘get_maintainer.pl’ script.

Signed-off-by: Chetan Pant <chetan4windows@gmail.com>
Message-Id: <20201023124424.20177-1-chetan4windows@gmail.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
[thuth: Adapted exec.c and qdev-monitor.c to new location]
Signed-off-by: Thomas Huth <thuth@redhat.com>
2020-11-15 17:04:40 +01:00

320 lines
8.5 KiB
C

/*
* QEMU model of the Milkymist SoftUSB block.
*
* Copyright (c) 2010 Michael Walle <michael@walle.cc>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*
* Specification available at:
* not available yet
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/sysbus.h"
#include "migration/vmstate.h"
#include "trace.h"
#include "ui/console.h"
#include "hw/input/hid.h"
#include "hw/irq.h"
#include "hw/qdev-properties.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
#include "qom/object.h"
enum {
R_CTRL = 0,
R_MAX
};
enum {
CTRL_RESET = (1<<0),
};
#define COMLOC_DEBUG_PRODUCE 0x1000
#define COMLOC_DEBUG_BASE 0x1001
#define COMLOC_MEVT_PRODUCE 0x1101
#define COMLOC_MEVT_BASE 0x1102
#define COMLOC_KEVT_PRODUCE 0x1142
#define COMLOC_KEVT_BASE 0x1143
#define TYPE_MILKYMIST_SOFTUSB "milkymist-softusb"
OBJECT_DECLARE_SIMPLE_TYPE(MilkymistSoftUsbState, MILKYMIST_SOFTUSB)
struct MilkymistSoftUsbState {
SysBusDevice parent_obj;
HIDState hid_kbd;
HIDState hid_mouse;
MemoryRegion regs_region;
MemoryRegion pmem;
MemoryRegion dmem;
qemu_irq irq;
void *pmem_ptr;
void *dmem_ptr;
/* device properties */
uint32_t pmem_size;
uint32_t dmem_size;
/* device registers */
uint32_t regs[R_MAX];
/* mouse state */
uint8_t mouse_hid_buffer[4];
/* keyboard state */
uint8_t kbd_hid_buffer[8];
};
static uint64_t softusb_read(void *opaque, hwaddr addr,
unsigned size)
{
MilkymistSoftUsbState *s = opaque;
uint32_t r = 0;
addr >>= 2;
switch (addr) {
case R_CTRL:
r = s->regs[addr];
break;
default:
error_report("milkymist_softusb: read access to unknown register 0x"
TARGET_FMT_plx, addr << 2);
break;
}
trace_milkymist_softusb_memory_read(addr << 2, r);
return r;
}
static void
softusb_write(void *opaque, hwaddr addr, uint64_t value,
unsigned size)
{
MilkymistSoftUsbState *s = opaque;
trace_milkymist_softusb_memory_write(addr, value);
addr >>= 2;
switch (addr) {
case R_CTRL:
s->regs[addr] = value;
break;
default:
error_report("milkymist_softusb: write access to unknown register 0x"
TARGET_FMT_plx, addr << 2);
break;
}
}
static const MemoryRegionOps softusb_mmio_ops = {
.read = softusb_read,
.write = softusb_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
},
};
static inline void softusb_read_dmem(MilkymistSoftUsbState *s,
uint32_t offset, uint8_t *buf, uint32_t len)
{
if (offset + len >= s->dmem_size) {
error_report("milkymist_softusb: read dmem out of bounds "
"at offset 0x%x, len %d", offset, len);
memset(buf, 0, len);
return;
}
memcpy(buf, s->dmem_ptr + offset, len);
}
static inline void softusb_write_dmem(MilkymistSoftUsbState *s,
uint32_t offset, uint8_t *buf, uint32_t len)
{
if (offset + len >= s->dmem_size) {
error_report("milkymist_softusb: write dmem out of bounds "
"at offset 0x%x, len %d", offset, len);
return;
}
memcpy(s->dmem_ptr + offset, buf, len);
}
static void softusb_mouse_changed(MilkymistSoftUsbState *s)
{
uint8_t m;
softusb_read_dmem(s, COMLOC_MEVT_PRODUCE, &m, 1);
trace_milkymist_softusb_mevt(m);
softusb_write_dmem(s, COMLOC_MEVT_BASE + 4 * m, s->mouse_hid_buffer, 4);
m = (m + 1) & 0xf;
softusb_write_dmem(s, COMLOC_MEVT_PRODUCE, &m, 1);
trace_milkymist_softusb_pulse_irq();
qemu_irq_pulse(s->irq);
}
static void softusb_kbd_changed(MilkymistSoftUsbState *s)
{
uint8_t m;
softusb_read_dmem(s, COMLOC_KEVT_PRODUCE, &m, 1);
trace_milkymist_softusb_kevt(m);
softusb_write_dmem(s, COMLOC_KEVT_BASE + 8 * m, s->kbd_hid_buffer, 8);
m = (m + 1) & 0x7;
softusb_write_dmem(s, COMLOC_KEVT_PRODUCE, &m, 1);
trace_milkymist_softusb_pulse_irq();
qemu_irq_pulse(s->irq);
}
static void softusb_kbd_hid_datain(HIDState *hs)
{
MilkymistSoftUsbState *s = container_of(hs, MilkymistSoftUsbState, hid_kbd);
int len;
/* if device is in reset, do nothing */
if (s->regs[R_CTRL] & CTRL_RESET) {
return;
}
while (hid_has_events(hs)) {
len = hid_keyboard_poll(hs, s->kbd_hid_buffer,
sizeof(s->kbd_hid_buffer));
if (len == 8) {
softusb_kbd_changed(s);
}
}
}
static void softusb_mouse_hid_datain(HIDState *hs)
{
MilkymistSoftUsbState *s =
container_of(hs, MilkymistSoftUsbState, hid_mouse);
int len;
/* if device is in reset, do nothing */
if (s->regs[R_CTRL] & CTRL_RESET) {
return;
}
while (hid_has_events(hs)) {
len = hid_pointer_poll(hs, s->mouse_hid_buffer,
sizeof(s->mouse_hid_buffer));
if (len == 4) {
softusb_mouse_changed(s);
}
}
}
static void milkymist_softusb_reset(DeviceState *d)
{
MilkymistSoftUsbState *s = MILKYMIST_SOFTUSB(d);
int i;
for (i = 0; i < R_MAX; i++) {
s->regs[i] = 0;
}
memset(s->kbd_hid_buffer, 0, sizeof(s->kbd_hid_buffer));
memset(s->mouse_hid_buffer, 0, sizeof(s->mouse_hid_buffer));
hid_reset(&s->hid_kbd);
hid_reset(&s->hid_mouse);
/* defaults */
s->regs[R_CTRL] = CTRL_RESET;
}
static void milkymist_softusb_realize(DeviceState *dev, Error **errp)
{
MilkymistSoftUsbState *s = MILKYMIST_SOFTUSB(dev);
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
sysbus_init_irq(sbd, &s->irq);
memory_region_init_io(&s->regs_region, OBJECT(s), &softusb_mmio_ops, s,
"milkymist-softusb", R_MAX * 4);
sysbus_init_mmio(sbd, &s->regs_region);
/* register pmem and dmem */
memory_region_init_ram_nomigrate(&s->pmem, OBJECT(s), "milkymist-softusb.pmem",
s->pmem_size, &error_fatal);
vmstate_register_ram_global(&s->pmem);
s->pmem_ptr = memory_region_get_ram_ptr(&s->pmem);
sysbus_init_mmio(sbd, &s->pmem);
memory_region_init_ram_nomigrate(&s->dmem, OBJECT(s), "milkymist-softusb.dmem",
s->dmem_size, &error_fatal);
vmstate_register_ram_global(&s->dmem);
s->dmem_ptr = memory_region_get_ram_ptr(&s->dmem);
sysbus_init_mmio(sbd, &s->dmem);
hid_init(&s->hid_kbd, HID_KEYBOARD, softusb_kbd_hid_datain);
hid_init(&s->hid_mouse, HID_MOUSE, softusb_mouse_hid_datain);
}
static const VMStateDescription vmstate_milkymist_softusb = {
.name = "milkymist-softusb",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY(regs, MilkymistSoftUsbState, R_MAX),
VMSTATE_HID_KEYBOARD_DEVICE(hid_kbd, MilkymistSoftUsbState),
VMSTATE_HID_POINTER_DEVICE(hid_mouse, MilkymistSoftUsbState),
VMSTATE_BUFFER(kbd_hid_buffer, MilkymistSoftUsbState),
VMSTATE_BUFFER(mouse_hid_buffer, MilkymistSoftUsbState),
VMSTATE_END_OF_LIST()
}
};
static Property milkymist_softusb_properties[] = {
DEFINE_PROP_UINT32("pmem_size", MilkymistSoftUsbState, pmem_size, 0x00001000),
DEFINE_PROP_UINT32("dmem_size", MilkymistSoftUsbState, dmem_size, 0x00002000),
DEFINE_PROP_END_OF_LIST(),
};
static void milkymist_softusb_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = milkymist_softusb_realize;
dc->reset = milkymist_softusb_reset;
dc->vmsd = &vmstate_milkymist_softusb;
device_class_set_props(dc, milkymist_softusb_properties);
}
static const TypeInfo milkymist_softusb_info = {
.name = TYPE_MILKYMIST_SOFTUSB,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(MilkymistSoftUsbState),
.class_init = milkymist_softusb_class_init,
};
static void milkymist_softusb_register_types(void)
{
type_register_static(&milkymist_softusb_info);
}
type_init(milkymist_softusb_register_types)