qemu/hw/dma/i82374.c
Kirill Batuzov 848696bf35 PortioList: Store PortioList in device state
PortioList is an abstraction used for construction of MemoryRegionPortioList
from MemoryRegionPortio. It can be used later to unmap created memory regions.
It also requires proper cleanup because some of the memory inside is allocated
dynamically.

By moving PortioList ot device state we make it possible to cleanup later and
avoid leaking memory.

This change spans several target platforms.  The following testcases cover all
changed lines:
  qemu-system-ppc -M prep
  qemu-system-i386 -vga qxl
  qemu-system-i386 -M isapc -soundhw adlib -device ib700,id=watchdog0,bus=isa.0

Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-05-05 20:58:33 +02:00

179 lines
4.9 KiB
C

/*
* QEMU Intel 82374 emulation (Enhanced DMA controller)
*
* Copyright (c) 2010 Hervé Poussineau
*
* 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/isa/isa.h"
//#define DEBUG_I82374
#ifdef DEBUG_I82374
#define DPRINTF(fmt, ...) \
do { fprintf(stderr, "i82374: " fmt , ## __VA_ARGS__); } while (0)
#else
#define DPRINTF(fmt, ...) \
do {} while (0)
#endif
#define BADF(fmt, ...) \
do { fprintf(stderr, "i82374 ERROR: " fmt , ## __VA_ARGS__); } while (0)
typedef struct I82374State {
uint8_t commands[8];
qemu_irq out;
PortioList port_list;
} I82374State;
static const VMStateDescription vmstate_i82374 = {
.name = "i82374",
.version_id = 0,
.minimum_version_id = 0,
.fields = (VMStateField[]) {
VMSTATE_UINT8_ARRAY(commands, I82374State, 8),
VMSTATE_END_OF_LIST()
},
};
static uint32_t i82374_read_isr(void *opaque, uint32_t nport)
{
uint32_t val = 0;
BADF("%s: %08x\n", __func__, nport);
DPRINTF("%s: %08x=%08x\n", __func__, nport, val);
return val;
}
static void i82374_write_command(void *opaque, uint32_t nport, uint32_t data)
{
DPRINTF("%s: %08x=%08x\n", __func__, nport, data);
if (data != 0x42) {
/* Not Stop S/G command */
BADF("%s: %08x=%08x\n", __func__, nport, data);
}
}
static uint32_t i82374_read_status(void *opaque, uint32_t nport)
{
uint32_t val = 0;
BADF("%s: %08x\n", __func__, nport);
DPRINTF("%s: %08x=%08x\n", __func__, nport, val);
return val;
}
static void i82374_write_descriptor(void *opaque, uint32_t nport, uint32_t data)
{
DPRINTF("%s: %08x=%08x\n", __func__, nport, data);
BADF("%s: %08x=%08x\n", __func__, nport, data);
}
static uint32_t i82374_read_descriptor(void *opaque, uint32_t nport)
{
uint32_t val = 0;
BADF("%s: %08x\n", __func__, nport);
DPRINTF("%s: %08x=%08x\n", __func__, nport, val);
return val;
}
static void i82374_realize(I82374State *s, Error **errp)
{
DMA_init(1, &s->out);
memset(s->commands, 0, sizeof(s->commands));
}
#define TYPE_I82374 "i82374"
#define I82374(obj) OBJECT_CHECK(ISAi82374State, (obj), TYPE_I82374)
typedef struct ISAi82374State {
ISADevice parent_obj;
uint32_t iobase;
I82374State state;
} ISAi82374State;
static const VMStateDescription vmstate_isa_i82374 = {
.name = "isa-i82374",
.version_id = 0,
.minimum_version_id = 0,
.fields = (VMStateField[]) {
VMSTATE_STRUCT(state, ISAi82374State, 0, vmstate_i82374, I82374State),
VMSTATE_END_OF_LIST()
},
};
static const MemoryRegionPortio i82374_portio_list[] = {
{ 0x0A, 1, 1, .read = i82374_read_isr, },
{ 0x10, 8, 1, .write = i82374_write_command, },
{ 0x18, 8, 1, .read = i82374_read_status, },
{ 0x20, 0x20, 1,
.write = i82374_write_descriptor, .read = i82374_read_descriptor, },
PORTIO_END_OF_LIST(),
};
static void i82374_isa_realize(DeviceState *dev, Error **errp)
{
ISAi82374State *isa = I82374(dev);
I82374State *s = &isa->state;
portio_list_init(&s->port_list, OBJECT(isa), i82374_portio_list, s,
"i82374");
portio_list_add(&s->port_list, isa_address_space_io(&isa->parent_obj),
isa->iobase);
i82374_realize(s, errp);
qdev_init_gpio_out(dev, &s->out, 1);
}
static Property i82374_properties[] = {
DEFINE_PROP_UINT32("iobase", ISAi82374State, iobase, 0x400),
DEFINE_PROP_END_OF_LIST()
};
static void i82374_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = i82374_isa_realize;
dc->vmsd = &vmstate_isa_i82374;
dc->props = i82374_properties;
}
static const TypeInfo i82374_isa_info = {
.name = TYPE_I82374,
.parent = TYPE_ISA_DEVICE,
.instance_size = sizeof(ISAi82374State),
.class_init = i82374_class_init,
};
static void i82374_register_types(void)
{
type_register_static(&i82374_isa_info);
}
type_init(i82374_register_types)