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qemu/hw/isa/vt82c686.c

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/*
* VT82C686B south bridge support
*
* Copyright (c) 2008 yajin (yajin@vm-kernel.org)
* Copyright (c) 2009 chenming (chenming@rdc.faw.com.cn)
* Copyright (c) 2010 Huacai Chen (zltjiangshi@gmail.com)
* This code is licensed under the GNU GPL v2.
*
* Contributions after 2012-01-13 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*/
#include "qemu/osdep.h"
#include "hw/isa/vt82c686.h"
#include "hw/pci/pci.h"
#include "hw/qdev-properties.h"
#include "hw/isa/isa.h"
#include "hw/isa/superio.h"
#include "hw/intc/i8259.h"
#include "hw/irq.h"
#include "hw/dma/i8257.h"
#include "hw/timer/i8254.h"
#include "hw/rtc/mc146818rtc.h"
#include "migration/vmstate.h"
#include "hw/isa/apm.h"
#include "hw/acpi/acpi.h"
#include "hw/i2c/pm_smbus.h"
#include "qapi/error.h"
#include "qemu/log.h"
#include "qemu/module.h"
#include "qemu/range.h"
#include "qemu/timer.h"
#include "exec/address-spaces.h"
#include "trace.h"
#define TYPE_VIA_PM "via-pm"
OBJECT_DECLARE_SIMPLE_TYPE(ViaPMState, VIA_PM)
struct ViaPMState {
PCIDevice dev;
MemoryRegion io;
ACPIREGS ar;
APMState apm;
PMSMBus smb;
};
static void pm_io_space_update(ViaPMState *s)
{
uint32_t pmbase = pci_get_long(s->dev.config + 0x48) & 0xff80UL;
memory_region_transaction_begin();
memory_region_set_address(&s->io, pmbase);
memory_region_set_enabled(&s->io, s->dev.config[0x41] & BIT(7));
memory_region_transaction_commit();
}
static void smb_io_space_update(ViaPMState *s)
{
uint32_t smbase = pci_get_long(s->dev.config + 0x90) & 0xfff0UL;
memory_region_transaction_begin();
memory_region_set_address(&s->smb.io, smbase);
memory_region_set_enabled(&s->smb.io, s->dev.config[0xd2] & BIT(0));
memory_region_transaction_commit();
}
static int vmstate_acpi_post_load(void *opaque, int version_id)
{
ViaPMState *s = opaque;
pm_io_space_update(s);
smb_io_space_update(s);
return 0;
}
static const VMStateDescription vmstate_acpi = {
.name = "vt82c686b_pm",
.version_id = 1,
.minimum_version_id = 1,
.post_load = vmstate_acpi_post_load,
.fields = (VMStateField[]) {
VMSTATE_PCI_DEVICE(dev, ViaPMState),
VMSTATE_UINT16(ar.pm1.evt.sts, ViaPMState),
VMSTATE_UINT16(ar.pm1.evt.en, ViaPMState),
VMSTATE_UINT16(ar.pm1.cnt.cnt, ViaPMState),
VMSTATE_STRUCT(apm, ViaPMState, 0, vmstate_apm, APMState),
VMSTATE_TIMER_PTR(ar.tmr.timer, ViaPMState),
VMSTATE_INT64(ar.tmr.overflow_time, ViaPMState),
VMSTATE_END_OF_LIST()
}
};
static void pm_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int len)
{
ViaPMState *s = VIA_PM(d);
trace_via_pm_write(addr, val, len);
pci_default_write_config(d, addr, val, len);
if (ranges_overlap(addr, len, 0x48, 4)) {
uint32_t v = pci_get_long(s->dev.config + 0x48);
pci_set_long(s->dev.config + 0x48, (v & 0xff80UL) | 1);
}
if (range_covers_byte(addr, len, 0x41)) {
pm_io_space_update(s);
}
if (ranges_overlap(addr, len, 0x90, 4)) {
uint32_t v = pci_get_long(s->dev.config + 0x90);
pci_set_long(s->dev.config + 0x90, (v & 0xfff0UL) | 1);
}
if (range_covers_byte(addr, len, 0xd2)) {
s->dev.config[0xd2] &= 0xf;
smb_io_space_update(s);
}
}
static void pm_io_write(void *op, hwaddr addr, uint64_t data, unsigned size)
{
trace_via_pm_io_write(addr, data, size);
}
static uint64_t pm_io_read(void *op, hwaddr addr, unsigned size)
{
trace_via_pm_io_read(addr, 0, size);
return 0;
}
static const MemoryRegionOps pm_io_ops = {
.read = pm_io_read,
.write = pm_io_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
},
};
static void pm_update_sci(ViaPMState *s)
{
int sci_level, pmsts;
pmsts = acpi_pm1_evt_get_sts(&s->ar);
sci_level = (((pmsts & s->ar.pm1.evt.en) &
(ACPI_BITMASK_RT_CLOCK_ENABLE |
ACPI_BITMASK_POWER_BUTTON_ENABLE |
ACPI_BITMASK_GLOBAL_LOCK_ENABLE |
ACPI_BITMASK_TIMER_ENABLE)) != 0);
if (pci_get_byte(s->dev.config + PCI_INTERRUPT_PIN)) {
/*
* FIXME:
* Fix device model that realizes this PM device and remove
* this work around.
* The device model should wire SCI and setup
* PCI_INTERRUPT_PIN properly.
* If PIN# = 0(interrupt pin isn't used), don't raise SCI as
* work around.
*/
pci_set_irq(&s->dev, sci_level);
}
/* schedule a timer interruption if needed */
acpi_pm_tmr_update(&s->ar, (s->ar.pm1.evt.en & ACPI_BITMASK_TIMER_ENABLE) &&
!(pmsts & ACPI_BITMASK_TIMER_STATUS));
}
static void pm_tmr_timer(ACPIREGS *ar)
{
ViaPMState *s = container_of(ar, ViaPMState, ar);
pm_update_sci(s);
}
static void via_pm_reset(DeviceState *d)
{
ViaPMState *s = VIA_PM(d);
memset(s->dev.config + PCI_CONFIG_HEADER_SIZE, 0,
PCI_CONFIG_SPACE_SIZE - PCI_CONFIG_HEADER_SIZE);
/* Power Management IO base */
pci_set_long(s->dev.config + 0x48, 1);
/* SMBus IO base */
pci_set_long(s->dev.config + 0x90, 1);
acpi_pm1_evt_reset(&s->ar);
acpi_pm1_cnt_reset(&s->ar);
acpi_pm_tmr_reset(&s->ar);
pm_update_sci(s);
pm_io_space_update(s);
smb_io_space_update(s);
}
static void via_pm_realize(PCIDevice *dev, Error **errp)
{
ViaPMState *s = VIA_PM(dev);
pci_set_word(dev->config + PCI_STATUS, PCI_STATUS_FAST_BACK |
PCI_STATUS_DEVSEL_MEDIUM);
pm_smbus_init(DEVICE(s), &s->smb, false);
memory_region_add_subregion(pci_address_space_io(dev), 0, &s->smb.io);
memory_region_set_enabled(&s->smb.io, false);
apm_init(dev, &s->apm, NULL, s);
memory_region_init_io(&s->io, OBJECT(dev), &pm_io_ops, s, "via-pm", 128);
memory_region_add_subregion(pci_address_space_io(dev), 0, &s->io);
memory_region_set_enabled(&s->io, false);
acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io);
acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io);
acpi_pm1_cnt_init(&s->ar, &s->io, false, false, 2, false);
}
typedef struct via_pm_init_info {
uint16_t device_id;
} ViaPMInitInfo;
static void via_pm_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
ViaPMInitInfo *info = data;
k->realize = via_pm_realize;
k->config_write = pm_write_config;
k->vendor_id = PCI_VENDOR_ID_VIA;
k->device_id = info->device_id;
k->class_id = PCI_CLASS_BRIDGE_OTHER;
k->revision = 0x40;
dc->reset = via_pm_reset;
/* Reason: part of VIA south bridge, does not exist stand alone */
dc->user_creatable = false;
dc->vmsd = &vmstate_acpi;
}
static const TypeInfo via_pm_info = {
.name = TYPE_VIA_PM,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(ViaPMState),
.abstract = true,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
static const ViaPMInitInfo vt82c686b_pm_init_info = {
.device_id = PCI_DEVICE_ID_VIA_82C686B_PM,
};
static const TypeInfo vt82c686b_pm_info = {
.name = TYPE_VT82C686B_PM,
.parent = TYPE_VIA_PM,
.class_init = via_pm_class_init,
.class_data = (void *)&vt82c686b_pm_init_info,
};
static const ViaPMInitInfo vt8231_pm_init_info = {
.device_id = PCI_DEVICE_ID_VIA_8231_PM,
};
static const TypeInfo vt8231_pm_info = {
.name = TYPE_VT8231_PM,
.parent = TYPE_VIA_PM,
.class_init = via_pm_class_init,
.class_data = (void *)&vt8231_pm_init_info,
};
typedef struct SuperIOConfig {
uint8_t regs[0x100];
MemoryRegion io;
} SuperIOConfig;
static void superio_cfg_write(void *opaque, hwaddr addr, uint64_t data,
unsigned size)
{
SuperIOConfig *sc = opaque;
uint8_t idx = sc->regs[0];
if (addr == 0) { /* config index register */
sc->regs[0] = data;
return;
}
/* config data register */
trace_via_superio_write(idx, data);
switch (idx) {
case 0x00 ... 0xdf:
case 0xe4:
case 0xe5:
case 0xe9 ... 0xed:
case 0xf3:
case 0xf5:
case 0xf7:
case 0xf9 ... 0xfb:
case 0xfd ... 0xff:
/* ignore write to read only registers */
return;
/* case 0xe6 ... 0xe8: Should set base port of parallel and serial */
default:
qemu_log_mask(LOG_UNIMP,
"via_superio_cfg: unimplemented register 0x%x\n", idx);
break;
}
sc->regs[idx] = data;
}
static uint64_t superio_cfg_read(void *opaque, hwaddr addr, unsigned size)
{
SuperIOConfig *sc = opaque;
uint8_t idx = sc->regs[0];
uint8_t val = sc->regs[idx];
if (addr == 0) {
return idx;
}
if (addr == 1 && idx == 0) {
val = 0; /* reading reg 0 where we store index value */
}
trace_via_superio_read(idx, val);
return val;
}
static const MemoryRegionOps superio_cfg_ops = {
.read = superio_cfg_read,
.write = superio_cfg_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
},
};
OBJECT_DECLARE_SIMPLE_TYPE(VT82C686BISAState, VT82C686B_ISA)
struct VT82C686BISAState {
PCIDevice dev;
qemu_irq cpu_intr;
SuperIOConfig superio_cfg;
};
static void via_isa_request_i8259_irq(void *opaque, int irq, int level)
{
VT82C686BISAState *s = opaque;
qemu_set_irq(s->cpu_intr, level);
}
static void vt82c686b_write_config(PCIDevice *d, uint32_t addr,
uint32_t val, int len)
{
VT82C686BISAState *s = VT82C686B_ISA(d);
trace_via_isa_write(addr, val, len);
pci_default_write_config(d, addr, val, len);
if (addr == 0x85) {
/* BIT(1): enable or disable superio config io ports */
memory_region_set_enabled(&s->superio_cfg.io, val & BIT(1));
}
}
static const VMStateDescription vmstate_via = {
.name = "vt82c686b",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_PCI_DEVICE(dev, VT82C686BISAState),
VMSTATE_END_OF_LIST()
}
};
static void vt82c686b_isa_reset(DeviceState *dev)
{
VT82C686BISAState *s = VT82C686B_ISA(dev);
uint8_t *pci_conf = s->dev.config;
pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0);
pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL);
pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM);
pci_conf[0x48] = 0x01; /* Miscellaneous Control 3 */
pci_conf[0x4a] = 0x04; /* IDE interrupt Routing */
pci_conf[0x4f] = 0x03; /* DMA/Master Mem Access Control 3 */
pci_conf[0x50] = 0x2d; /* PnP DMA Request Control */
pci_conf[0x59] = 0x04;
pci_conf[0x5a] = 0x04; /* KBC/RTC Control*/
pci_conf[0x5f] = 0x04;
pci_conf[0x77] = 0x10; /* GPIO Control 1/2/3/4 */
s->superio_cfg.regs[0xe0] = 0x3c; /* Device ID */
s->superio_cfg.regs[0xe2] = 0x03; /* Function select */
s->superio_cfg.regs[0xe3] = 0xfc; /* Floppy ctrl base addr */
s->superio_cfg.regs[0xe6] = 0xde; /* Parallel port base addr */
s->superio_cfg.regs[0xe7] = 0xfe; /* Serial port 1 base addr */
s->superio_cfg.regs[0xe8] = 0xbe; /* Serial port 2 base addr */
}
static void vt82c686b_realize(PCIDevice *d, Error **errp)
{
VT82C686BISAState *s = VT82C686B_ISA(d);
DeviceState *dev = DEVICE(d);
ISABus *isa_bus;
qemu_irq *isa_irq;
int i;
qdev_init_gpio_out(dev, &s->cpu_intr, 1);
isa_irq = qemu_allocate_irqs(via_isa_request_i8259_irq, s, 1);
isa_bus = isa_bus_new(dev, get_system_memory(), pci_address_space_io(d),
&error_fatal);
isa_bus_irqs(isa_bus, i8259_init(isa_bus, *isa_irq));
i8254_pit_init(isa_bus, 0x40, 0, NULL);
i8257_dma_init(isa_bus, 0);
isa_create_simple(isa_bus, TYPE_VT82C686B_SUPERIO);
mc146818_rtc_init(isa_bus, 2000, NULL);
for (i = 0; i < PCI_CONFIG_HEADER_SIZE; i++) {
if (i < PCI_COMMAND || i >= PCI_REVISION_ID) {
d->wmask[i] = 0;
}
}
memory_region_init_io(&s->superio_cfg.io, OBJECT(d), &superio_cfg_ops,
&s->superio_cfg, "superio_cfg", 2);
memory_region_set_enabled(&s->superio_cfg.io, false);
/*
* The floppy also uses 0x3f0 and 0x3f1.
* But we do not emulate a floppy, so just set it here.
*/
memory_region_add_subregion(isa_bus->address_space_io, 0x3f0,
&s->superio_cfg.io);
}
static void via_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->realize = vt82c686b_realize;
k->config_write = vt82c686b_write_config;
k->vendor_id = PCI_VENDOR_ID_VIA;
k->device_id = PCI_DEVICE_ID_VIA_ISA_BRIDGE;
k->class_id = PCI_CLASS_BRIDGE_ISA;
k->revision = 0x40;
dc->reset = vt82c686b_isa_reset;
dc->desc = "ISA bridge";
dc->vmsd = &vmstate_via;
/*
* Reason: part of VIA VT82C686 southbridge, needs to be wired up,
* e.g. by mips_fuloong2e_init()
*/
dc->user_creatable = false;
}
static const TypeInfo via_info = {
.name = TYPE_VT82C686B_ISA,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(VT82C686BISAState),
.class_init = via_class_init,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
static void vt82c686b_superio_class_init(ObjectClass *klass, void *data)
{
ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass);
sc->serial.count = 2;
sc->parallel.count = 1;
sc->ide.count = 0;
sc->floppy.count = 1;
}
static const TypeInfo via_superio_info = {
.name = TYPE_VT82C686B_SUPERIO,
.parent = TYPE_ISA_SUPERIO,
.instance_size = sizeof(ISASuperIODevice),
.class_size = sizeof(ISASuperIOClass),
.class_init = vt82c686b_superio_class_init,
};
static void vt82c686b_register_types(void)
{
type_register_static(&via_pm_info);
type_register_static(&vt82c686b_pm_info);
type_register_static(&vt8231_pm_info);
type_register_static(&via_info);
type_register_static(&via_superio_info);
}
type_init(vt82c686b_register_types)
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