qemu/hw/misc/milkymist-hpdmc.c
Juan Quintela 35d08458a9 savevm: Remove all the unneeded version_minimum_id_old (rest)
After previous Peter patch, they are redundant.  This way we don't
assign them except when needed.  Once there, there were lots of case
where the ".fields" indentation was wrong:

     .fields = (VMStateField []) {
and
     .fields =      (VMStateField []) {

Change all the combinations to:

     .fields = (VMStateField[]){

The biggest problem (appart from aesthetics) was that checkpatch complained
when we copy&pasted the code from one place to another.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-14 15:24:51 +02:00

175 lines
4.3 KiB
C

/*
* QEMU model of the Milkymist High Performance Dynamic Memory Controller.
*
* 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 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:
* http://www.milkymist.org/socdoc/hpdmc.pdf
*/
#include "hw/hw.h"
#include "hw/sysbus.h"
#include "trace.h"
#include "qemu/error-report.h"
enum {
R_SYSTEM = 0,
R_BYPASS,
R_TIMING,
R_IODELAY,
R_MAX
};
enum {
IODELAY_DQSDELAY_RDY = (1<<5),
IODELAY_PLL1_LOCKED = (1<<6),
IODELAY_PLL2_LOCKED = (1<<7),
};
#define TYPE_MILKYMIST_HPDMC "milkymist-hpdmc"
#define MILKYMIST_HPDMC(obj) \
OBJECT_CHECK(MilkymistHpdmcState, (obj), TYPE_MILKYMIST_HPDMC)
struct MilkymistHpdmcState {
SysBusDevice parent_obj;
MemoryRegion regs_region;
uint32_t regs[R_MAX];
};
typedef struct MilkymistHpdmcState MilkymistHpdmcState;
static uint64_t hpdmc_read(void *opaque, hwaddr addr,
unsigned size)
{
MilkymistHpdmcState *s = opaque;
uint32_t r = 0;
addr >>= 2;
switch (addr) {
case R_SYSTEM:
case R_BYPASS:
case R_TIMING:
case R_IODELAY:
r = s->regs[addr];
break;
default:
error_report("milkymist_hpdmc: read access to unknown register 0x"
TARGET_FMT_plx, addr << 2);
break;
}
trace_milkymist_hpdmc_memory_read(addr << 2, r);
return r;
}
static void hpdmc_write(void *opaque, hwaddr addr, uint64_t value,
unsigned size)
{
MilkymistHpdmcState *s = opaque;
trace_milkymist_hpdmc_memory_write(addr, value);
addr >>= 2;
switch (addr) {
case R_SYSTEM:
case R_BYPASS:
case R_TIMING:
s->regs[addr] = value;
break;
case R_IODELAY:
/* ignore writes */
break;
default:
error_report("milkymist_hpdmc: write access to unknown register 0x"
TARGET_FMT_plx, addr << 2);
break;
}
}
static const MemoryRegionOps hpdmc_mmio_ops = {
.read = hpdmc_read,
.write = hpdmc_write,
.valid = {
.min_access_size = 4,
.max_access_size = 4,
},
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void milkymist_hpdmc_reset(DeviceState *d)
{
MilkymistHpdmcState *s = MILKYMIST_HPDMC(d);
int i;
for (i = 0; i < R_MAX; i++) {
s->regs[i] = 0;
}
/* defaults */
s->regs[R_IODELAY] = IODELAY_DQSDELAY_RDY | IODELAY_PLL1_LOCKED
| IODELAY_PLL2_LOCKED;
}
static int milkymist_hpdmc_init(SysBusDevice *dev)
{
MilkymistHpdmcState *s = MILKYMIST_HPDMC(dev);
memory_region_init_io(&s->regs_region, OBJECT(dev), &hpdmc_mmio_ops, s,
"milkymist-hpdmc", R_MAX * 4);
sysbus_init_mmio(dev, &s->regs_region);
return 0;
}
static const VMStateDescription vmstate_milkymist_hpdmc = {
.name = "milkymist-hpdmc",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32_ARRAY(regs, MilkymistHpdmcState, R_MAX),
VMSTATE_END_OF_LIST()
}
};
static void milkymist_hpdmc_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
k->init = milkymist_hpdmc_init;
dc->reset = milkymist_hpdmc_reset;
dc->vmsd = &vmstate_milkymist_hpdmc;
}
static const TypeInfo milkymist_hpdmc_info = {
.name = TYPE_MILKYMIST_HPDMC,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(MilkymistHpdmcState),
.class_init = milkymist_hpdmc_class_init,
};
static void milkymist_hpdmc_register_types(void)
{
type_register_static(&milkymist_hpdmc_info);
}
type_init(milkymist_hpdmc_register_types)