qemu/hw/misc/macio/macio.c

419 lines
12 KiB
C

/*
* PowerMac MacIO device emulation
*
* Copyright (c) 2005-2007 Fabrice Bellard
* Copyright (c) 2007 Jocelyn Mayer
*
* 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/hw.h"
#include "hw/ppc/mac.h"
#include "hw/pci/pci.h"
#include "hw/ppc/mac_dbdma.h"
#include "hw/char/escc.h"
#define TYPE_MACIO "macio"
#define MACIO(obj) OBJECT_CHECK(MacIOState, (obj), TYPE_MACIO)
typedef struct MacIOState
{
/*< private >*/
PCIDevice parent;
/*< public >*/
MemoryRegion bar;
CUDAState cuda;
void *dbdma;
MemoryRegion *pic_mem;
MemoryRegion *escc_mem;
uint64_t frequency;
} MacIOState;
#define OLDWORLD_MACIO(obj) \
OBJECT_CHECK(OldWorldMacIOState, (obj), TYPE_OLDWORLD_MACIO)
typedef struct OldWorldMacIOState {
/*< private >*/
MacIOState parent_obj;
/*< public >*/
qemu_irq irqs[5];
MacIONVRAMState nvram;
MACIOIDEState ide[2];
} OldWorldMacIOState;
#define NEWWORLD_MACIO(obj) \
OBJECT_CHECK(NewWorldMacIOState, (obj), TYPE_NEWWORLD_MACIO)
typedef struct NewWorldMacIOState {
/*< private >*/
MacIOState parent_obj;
/*< public >*/
qemu_irq irqs[5];
MACIOIDEState ide[2];
} NewWorldMacIOState;
/*
* The mac-io has two interfaces to the ESCC. One is called "escc-legacy",
* while the other one is the normal, current ESCC interface.
*
* The magic below creates memory aliases to spawn the escc-legacy device
* purely by rerouting the respective registers to our escc region. This
* works because the only difference between the two memory regions is the
* register layout, not their semantics.
*
* Reference: ftp://ftp.software.ibm.com/rs6000/technology/spec/chrp/inwork/CHRP_IORef_1.0.pdf
*/
static void macio_escc_legacy_setup(MacIOState *macio_state)
{
MemoryRegion *escc_legacy = g_new(MemoryRegion, 1);
MemoryRegion *bar = &macio_state->bar;
int i;
static const int maps[] = {
0x00, 0x00,
0x02, 0x20,
0x04, 0x10,
0x06, 0x30,
0x08, 0x40,
0x0A, 0x50,
0x60, 0x60,
0x70, 0x70,
0x80, 0x70,
0x90, 0x80,
0xA0, 0x90,
0xB0, 0xA0,
0xC0, 0xB0,
0xD0, 0xC0,
0xE0, 0xD0,
0xF0, 0xE0,
};
memory_region_init(escc_legacy, NULL, "escc-legacy", 256);
for (i = 0; i < ARRAY_SIZE(maps); i += 2) {
MemoryRegion *port = g_new(MemoryRegion, 1);
memory_region_init_alias(port, NULL, "escc-legacy-port",
macio_state->escc_mem, maps[i+1], 0x2);
memory_region_add_subregion(escc_legacy, maps[i], port);
}
memory_region_add_subregion(bar, 0x12000, escc_legacy);
}
static void macio_bar_setup(MacIOState *macio_state)
{
MemoryRegion *bar = &macio_state->bar;
if (macio_state->escc_mem) {
memory_region_add_subregion(bar, 0x13000, macio_state->escc_mem);
macio_escc_legacy_setup(macio_state);
}
}
static int macio_common_initfn(PCIDevice *d)
{
MacIOState *s = MACIO(d);
SysBusDevice *sysbus_dev;
int ret;
d->config[0x3d] = 0x01; // interrupt on pin 1
ret = qdev_init(DEVICE(&s->cuda));
if (ret < 0) {
return ret;
}
sysbus_dev = SYS_BUS_DEVICE(&s->cuda);
memory_region_add_subregion(&s->bar, 0x16000,
sysbus_mmio_get_region(sysbus_dev, 0));
macio_bar_setup(s);
pci_register_bar(d, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar);
return 0;
}
static int macio_initfn_ide(MacIOState *s, MACIOIDEState *ide, qemu_irq irq0,
qemu_irq irq1, int dmaid)
{
SysBusDevice *sysbus_dev;
sysbus_dev = SYS_BUS_DEVICE(ide);
sysbus_connect_irq(sysbus_dev, 0, irq0);
sysbus_connect_irq(sysbus_dev, 1, irq1);
macio_ide_register_dma(ide, s->dbdma, dmaid);
return qdev_init(DEVICE(ide));
}
static int macio_oldworld_initfn(PCIDevice *d)
{
MacIOState *s = MACIO(d);
OldWorldMacIOState *os = OLDWORLD_MACIO(d);
SysBusDevice *sysbus_dev;
int i;
int cur_irq = 0;
int ret = macio_common_initfn(d);
if (ret < 0) {
return ret;
}
sysbus_dev = SYS_BUS_DEVICE(&s->cuda);
sysbus_connect_irq(sysbus_dev, 0, os->irqs[cur_irq++]);
ret = qdev_init(DEVICE(&os->nvram));
if (ret < 0) {
return ret;
}
sysbus_dev = SYS_BUS_DEVICE(&os->nvram);
memory_region_add_subregion(&s->bar, 0x60000,
sysbus_mmio_get_region(sysbus_dev, 0));
pmac_format_nvram_partition(&os->nvram, os->nvram.size);
if (s->pic_mem) {
/* Heathrow PIC */
memory_region_add_subregion(&s->bar, 0x00000, s->pic_mem);
}
/* IDE buses */
for (i = 0; i < ARRAY_SIZE(os->ide); i++) {
qemu_irq irq0 = os->irqs[cur_irq++];
qemu_irq irq1 = os->irqs[cur_irq++];
ret = macio_initfn_ide(s, &os->ide[i], irq0, irq1, 0x16 + (i * 4));
if (ret < 0) {
return ret;
}
}
return 0;
}
static void macio_init_ide(MacIOState *s, MACIOIDEState *ide, size_t ide_size,
int index)
{
gchar *name;
object_initialize(ide, ide_size, TYPE_MACIO_IDE);
qdev_set_parent_bus(DEVICE(ide), sysbus_get_default());
memory_region_add_subregion(&s->bar, 0x1f000 + ((index + 1) * 0x1000),
&ide->mem);
name = g_strdup_printf("ide[%i]", index);
object_property_add_child(OBJECT(s), name, OBJECT(ide), NULL);
g_free(name);
}
static void macio_oldworld_init(Object *obj)
{
MacIOState *s = MACIO(obj);
OldWorldMacIOState *os = OLDWORLD_MACIO(obj);
DeviceState *dev;
int i;
qdev_init_gpio_out(DEVICE(obj), os->irqs, ARRAY_SIZE(os->irqs));
object_initialize(&os->nvram, sizeof(os->nvram), TYPE_MACIO_NVRAM);
dev = DEVICE(&os->nvram);
qdev_prop_set_uint32(dev, "size", 0x2000);
qdev_prop_set_uint32(dev, "it_shift", 4);
for (i = 0; i < 2; i++) {
macio_init_ide(s, &os->ide[i], sizeof(os->ide[i]), i);
}
}
static void timer_write(void *opaque, hwaddr addr, uint64_t value,
unsigned size)
{
}
static uint64_t timer_read(void *opaque, hwaddr addr, unsigned size)
{
uint32_t value = 0;
uint64_t systime = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
uint64_t kltime;
kltime = muldiv64(systime, 4194300, get_ticks_per_sec() * 4);
kltime = muldiv64(kltime, 18432000, 1048575);
switch (addr) {
case 0x38:
value = kltime;
break;
case 0x3c:
value = kltime >> 32;
break;
}
return value;
}
static const MemoryRegionOps timer_ops = {
.read = timer_read,
.write = timer_write,
.endianness = DEVICE_LITTLE_ENDIAN,
};
static int macio_newworld_initfn(PCIDevice *d)
{
MacIOState *s = MACIO(d);
NewWorldMacIOState *ns = NEWWORLD_MACIO(d);
SysBusDevice *sysbus_dev;
MemoryRegion *timer_memory = g_new(MemoryRegion, 1);
int i;
int cur_irq = 0;
int ret = macio_common_initfn(d);
if (ret < 0) {
return ret;
}
sysbus_dev = SYS_BUS_DEVICE(&s->cuda);
sysbus_connect_irq(sysbus_dev, 0, ns->irqs[cur_irq++]);
if (s->pic_mem) {
/* OpenPIC */
memory_region_add_subregion(&s->bar, 0x40000, s->pic_mem);
}
/* IDE buses */
for (i = 0; i < ARRAY_SIZE(ns->ide); i++) {
qemu_irq irq0 = ns->irqs[cur_irq++];
qemu_irq irq1 = ns->irqs[cur_irq++];
ret = macio_initfn_ide(s, &ns->ide[i], irq0, irq1, 0x16 + (i * 4));
if (ret < 0) {
return ret;
}
}
/* Timer */
memory_region_init_io(timer_memory, OBJECT(s), &timer_ops, NULL, "timer",
0x1000);
memory_region_add_subregion(&s->bar, 0x15000, timer_memory);
return 0;
}
static void macio_newworld_init(Object *obj)
{
MacIOState *s = MACIO(obj);
NewWorldMacIOState *ns = NEWWORLD_MACIO(obj);
int i;
qdev_init_gpio_out(DEVICE(obj), ns->irqs, ARRAY_SIZE(ns->irqs));
for (i = 0; i < 2; i++) {
macio_init_ide(s, &ns->ide[i], sizeof(ns->ide[i]), i);
}
}
static void macio_instance_init(Object *obj)
{
MacIOState *s = MACIO(obj);
MemoryRegion *dbdma_mem;
memory_region_init(&s->bar, NULL, "macio", 0x80000);
object_initialize(&s->cuda, sizeof(s->cuda), TYPE_CUDA);
qdev_set_parent_bus(DEVICE(&s->cuda), sysbus_get_default());
object_property_add_child(obj, "cuda", OBJECT(&s->cuda), NULL);
s->dbdma = DBDMA_init(&dbdma_mem);
memory_region_add_subregion(&s->bar, 0x08000, dbdma_mem);
}
static void macio_oldworld_class_init(ObjectClass *oc, void *data)
{
PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc);
pdc->init = macio_oldworld_initfn;
pdc->device_id = PCI_DEVICE_ID_APPLE_343S1201;
}
static void macio_newworld_class_init(ObjectClass *oc, void *data)
{
PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc);
pdc->init = macio_newworld_initfn;
pdc->device_id = PCI_DEVICE_ID_APPLE_UNI_N_KEYL;
}
static Property macio_properties[] = {
DEFINE_PROP_UINT64("frequency", MacIOState, frequency, 0),
DEFINE_PROP_END_OF_LIST()
};
static void macio_class_init(ObjectClass *klass, void *data)
{
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
DeviceClass *dc = DEVICE_CLASS(klass);
k->vendor_id = PCI_VENDOR_ID_APPLE;
k->class_id = PCI_CLASS_OTHERS << 8;
dc->props = macio_properties;
}
static const TypeInfo macio_oldworld_type_info = {
.name = TYPE_OLDWORLD_MACIO,
.parent = TYPE_MACIO,
.instance_size = sizeof(OldWorldMacIOState),
.instance_init = macio_oldworld_init,
.class_init = macio_oldworld_class_init,
};
static const TypeInfo macio_newworld_type_info = {
.name = TYPE_NEWWORLD_MACIO,
.parent = TYPE_MACIO,
.instance_size = sizeof(NewWorldMacIOState),
.instance_init = macio_newworld_init,
.class_init = macio_newworld_class_init,
};
static const TypeInfo macio_type_info = {
.name = TYPE_MACIO,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(MacIOState),
.instance_init = macio_instance_init,
.abstract = true,
.class_init = macio_class_init,
};
static void macio_register_types(void)
{
type_register_static(&macio_type_info);
type_register_static(&macio_oldworld_type_info);
type_register_static(&macio_newworld_type_info);
}
type_init(macio_register_types)
void macio_init(PCIDevice *d,
MemoryRegion *pic_mem,
MemoryRegion *escc_mem)
{
MacIOState *macio_state = MACIO(d);
macio_state->pic_mem = pic_mem;
macio_state->escc_mem = escc_mem;
/* Note: this code is strongly inspirated from the corresponding code
in PearPC */
qdev_prop_set_uint64(DEVICE(&macio_state->cuda), "frequency",
macio_state->frequency);
qdev_init_nofail(DEVICE(d));
}