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qemu/hw/isa/vt82c686.c
Corey Minyard 93198b6cad i2c: Split smbus into parts 
smbus.c and smbus.h had device side code, master side code, and
smbus.h has some smbus_eeprom.c definitions.  Split them into
separate files.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-02-27 21:06:08 -06:00

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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/hw.h"
#include "hw/isa/vt82c686.h"
#include "hw/i2c/i2c.h"
#include "hw/pci/pci.h"
#include "hw/isa/isa.h"
#include "hw/isa/superio.h"
#include "hw/sysbus.h"
#include "hw/mips/mips.h"
#include "hw/isa/apm.h"
#include "hw/acpi/acpi.h"
#include "hw/i2c/pm_smbus.h"
#include "sysemu/sysemu.h"
#include "qemu/timer.h"
#include "exec/address-spaces.h"
//#define DEBUG_VT82C686B
#ifdef DEBUG_VT82C686B
#define DPRINTF(fmt, ...) fprintf(stderr, "%s: " fmt, __func__, ##__VA_ARGS__)
#else
#define DPRINTF(fmt, ...)
#endif
typedef struct SuperIOConfig
{
uint8_t config[0x100];
uint8_t index;
uint8_t data;
} SuperIOConfig;
typedef struct VT82C686BState {
PCIDevice dev;
MemoryRegion superio;
SuperIOConfig superio_conf;
} VT82C686BState;
#define TYPE_VT82C686B_DEVICE "VT82C686B"
#define VT82C686B_DEVICE(obj) \
OBJECT_CHECK(VT82C686BState, (obj), TYPE_VT82C686B_DEVICE)
static void superio_ioport_writeb(void *opaque, hwaddr addr, uint64_t data,
unsigned size)
{
SuperIOConfig *superio_conf = opaque;
DPRINTF("superio_ioport_writeb address 0x%x val 0x%x\n", addr, data);
if (addr == 0x3f0) {
superio_conf->index = data & 0xff;
} else {
bool can_write = true;
/* 0x3f1 */
switch (superio_conf->index) {
case 0x00 ... 0xdf:
case 0xe4:
case 0xe5:
case 0xe9 ... 0xed:
case 0xf3:
case 0xf5:
case 0xf7:
case 0xf9 ... 0xfb:
case 0xfd ... 0xff:
can_write = false;
break;
case 0xe7:
if ((data & 0xff) != 0xfe) {
DPRINTF("change uart 1 base. unsupported yet\n");
can_write = false;
}
break;
case 0xe8:
if ((data & 0xff) != 0xbe) {
DPRINTF("change uart 2 base. unsupported yet\n");
can_write = false;
}
break;
default:
break;
}
if (can_write) {
superio_conf->config[superio_conf->index] = data & 0xff;
}
}
}
static uint64_t superio_ioport_readb(void *opaque, hwaddr addr, unsigned size)
{
SuperIOConfig *superio_conf = opaque;
DPRINTF("superio_ioport_readb address 0x%x\n", addr);
return (superio_conf->config[superio_conf->index]);
}
static const MemoryRegionOps superio_ops = {
.read = superio_ioport_readb,
.write = superio_ioport_writeb,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
},
};
static void vt82c686b_reset(void * opaque)
{
PCIDevice *d = opaque;
uint8_t *pci_conf = d->config;
VT82C686BState *vt82c = VT82C686B_DEVICE(d);
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 */
vt82c->superio_conf.config[0xe0] = 0x3c;
vt82c->superio_conf.config[0xe2] = 0x03;
vt82c->superio_conf.config[0xe3] = 0xfc;
vt82c->superio_conf.config[0xe6] = 0xde;
vt82c->superio_conf.config[0xe7] = 0xfe;
vt82c->superio_conf.config[0xe8] = 0xbe;
}
/* write config pci function0 registers. PCI-ISA bridge */
static void vt82c686b_write_config(PCIDevice * d, uint32_t address,
uint32_t val, int len)
{
VT82C686BState *vt686 = VT82C686B_DEVICE(d);
DPRINTF("vt82c686b_write_config address 0x%x val 0x%x len 0x%x\n",
address, val, len);
pci_default_write_config(d, address, val, len);
if (address == 0x85) { /* enable or disable super IO configure */
memory_region_set_enabled(&vt686->superio, val & 0x2);
}
}
#define ACPI_DBG_IO_ADDR 0xb044
typedef struct VT686PMState {
PCIDevice dev;
MemoryRegion io;
ACPIREGS ar;
APMState apm;
PMSMBus smb;
uint32_t smb_io_base;
} VT686PMState;
typedef struct VT686AC97State {
PCIDevice dev;
} VT686AC97State;
typedef struct VT686MC97State {
PCIDevice dev;
} VT686MC97State;
#define TYPE_VT82C686B_PM_DEVICE "VT82C686B_PM"
#define VT82C686B_PM_DEVICE(obj) \
OBJECT_CHECK(VT686PMState, (obj), TYPE_VT82C686B_PM_DEVICE)
#define TYPE_VT82C686B_MC97_DEVICE "VT82C686B_MC97"
#define VT82C686B_MC97_DEVICE(obj) \
OBJECT_CHECK(VT686MC97State, (obj), TYPE_VT82C686B_MC97_DEVICE)
#define TYPE_VT82C686B_AC97_DEVICE "VT82C686B_AC97"
#define VT82C686B_AC97_DEVICE(obj) \
OBJECT_CHECK(VT686AC97State, (obj), TYPE_VT82C686B_AC97_DEVICE)
static void pm_update_sci(VT686PMState *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);
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)
{
VT686PMState *s = container_of(ar, VT686PMState, ar);
pm_update_sci(s);
}
static void pm_io_space_update(VT686PMState *s)
{
uint32_t pm_io_base;
pm_io_base = pci_get_long(s->dev.config + 0x40);
pm_io_base &= 0xffc0;
memory_region_transaction_begin();
memory_region_set_enabled(&s->io, s->dev.config[0x80] & 1);
memory_region_set_address(&s->io, pm_io_base);
memory_region_transaction_commit();
}
static void pm_write_config(PCIDevice *d,
uint32_t address, uint32_t val, int len)
{
DPRINTF("pm_write_config address 0x%x val 0x%x len 0x%x\n",
address, val, len);
pci_default_write_config(d, address, val, len);
}
static int vmstate_acpi_post_load(void *opaque, int version_id)
{
VT686PMState *s = opaque;
pm_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, VT686PMState),
VMSTATE_UINT16(ar.pm1.evt.sts, VT686PMState),
VMSTATE_UINT16(ar.pm1.evt.en, VT686PMState),
VMSTATE_UINT16(ar.pm1.cnt.cnt, VT686PMState),
VMSTATE_STRUCT(apm, VT686PMState, 0, vmstate_apm, APMState),
VMSTATE_TIMER_PTR(ar.tmr.timer, VT686PMState),
VMSTATE_INT64(ar.tmr.overflow_time, VT686PMState),
VMSTATE_END_OF_LIST()
}
};
/*
* TODO: vt82c686b_ac97_init() and vt82c686b_mc97_init()
* just register a PCI device now, functionalities will be implemented later.
*/
static void vt82c686b_ac97_realize(PCIDevice *dev, Error **errp)
{
VT686AC97State *s = VT82C686B_AC97_DEVICE(dev);
uint8_t *pci_conf = s->dev.config;
pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_INVALIDATE |
PCI_COMMAND_PARITY);
pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_CAP_LIST |
PCI_STATUS_DEVSEL_MEDIUM);
pci_set_long(pci_conf + PCI_INTERRUPT_PIN, 0x03);
}
void vt82c686b_ac97_init(PCIBus *bus, int devfn)
{
PCIDevice *dev;
dev = pci_create(bus, devfn, TYPE_VT82C686B_AC97_DEVICE);
qdev_init_nofail(&dev->qdev);
}
static void via_ac97_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->realize = vt82c686b_ac97_realize;
k->vendor_id = PCI_VENDOR_ID_VIA;
k->device_id = PCI_DEVICE_ID_VIA_AC97;
k->revision = 0x50;
k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
dc->desc = "AC97";
}
static const TypeInfo via_ac97_info = {
.name = TYPE_VT82C686B_AC97_DEVICE,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(VT686AC97State),
.class_init = via_ac97_class_init,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
static void vt82c686b_mc97_realize(PCIDevice *dev, Error **errp)
{
VT686MC97State *s = VT82C686B_MC97_DEVICE(dev);
uint8_t *pci_conf = s->dev.config;
pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_INVALIDATE |
PCI_COMMAND_VGA_PALETTE);
pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_DEVSEL_MEDIUM);
pci_set_long(pci_conf + PCI_INTERRUPT_PIN, 0x03);
}
void vt82c686b_mc97_init(PCIBus *bus, int devfn)
{
PCIDevice *dev;
dev = pci_create(bus, devfn, TYPE_VT82C686B_MC97_DEVICE);
qdev_init_nofail(&dev->qdev);
}
static void via_mc97_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->realize = vt82c686b_mc97_realize;
k->vendor_id = PCI_VENDOR_ID_VIA;
k->device_id = PCI_DEVICE_ID_VIA_MC97;
k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
k->revision = 0x30;
set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
dc->desc = "MC97";
}
static const TypeInfo via_mc97_info = {
.name = TYPE_VT82C686B_MC97_DEVICE,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(VT686MC97State),
.class_init = via_mc97_class_init,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
/* vt82c686 pm init */
static void vt82c686b_pm_realize(PCIDevice *dev, Error **errp)
{
VT686PMState *s = VT82C686B_PM_DEVICE(dev);
uint8_t *pci_conf;
pci_conf = s->dev.config;
pci_set_word(pci_conf + PCI_COMMAND, 0);
pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK |
PCI_STATUS_DEVSEL_MEDIUM);
/* 0x48-0x4B is Power Management I/O Base */
pci_set_long(pci_conf + 0x48, 0x00000001);
/* SMB ports:0xeee0~0xeeef */
s->smb_io_base =((s->smb_io_base & 0xfff0) + 0x0);
pci_conf[0x90] = s->smb_io_base | 1;
pci_conf[0x91] = s->smb_io_base >> 8;
pci_conf[0xd2] = 0x90;
pm_smbus_init(&s->dev.qdev, &s->smb, false);
memory_region_add_subregion(get_system_io(), s->smb_io_base, &s->smb.io);
apm_init(dev, &s->apm, NULL, s);
memory_region_init(&s->io, OBJECT(dev), "vt82c686-pm", 64);
memory_region_set_enabled(&s->io, false);
memory_region_add_subregion(get_system_io(), 0, &s->io);
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);
}
I2CBus *vt82c686b_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
qemu_irq sci_irq)
{
PCIDevice *dev;
VT686PMState *s;
dev = pci_create(bus, devfn, TYPE_VT82C686B_PM_DEVICE);
qdev_prop_set_uint32(&dev->qdev, "smb_io_base", smb_io_base);
s = VT82C686B_PM_DEVICE(dev);
qdev_init_nofail(&dev->qdev);
return s->smb.smbus;
}
static Property via_pm_properties[] = {
DEFINE_PROP_UINT32("smb_io_base", VT686PMState, smb_io_base, 0),
DEFINE_PROP_END_OF_LIST(),
};
static void via_pm_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->realize = vt82c686b_pm_realize;
k->config_write = pm_write_config;
k->vendor_id = PCI_VENDOR_ID_VIA;
k->device_id = PCI_DEVICE_ID_VIA_ACPI;
k->class_id = PCI_CLASS_BRIDGE_OTHER;
k->revision = 0x40;
dc->desc = "PM";
dc->vmsd = &vmstate_acpi;
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
dc->props = via_pm_properties;
}
static const TypeInfo via_pm_info = {
.name = TYPE_VT82C686B_PM_DEVICE,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(VT686PMState),
.class_init = via_pm_class_init,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
static const VMStateDescription vmstate_via = {
.name = "vt82c686b",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_PCI_DEVICE(dev, VT82C686BState),
VMSTATE_END_OF_LIST()
}
};
/* init the PCI-to-ISA bridge */
static void vt82c686b_realize(PCIDevice *d, Error **errp)
{
VT82C686BState *vt82c = VT82C686B_DEVICE(d);
uint8_t *pci_conf;
ISABus *isa_bus;
uint8_t *wmask;
int i;
isa_bus = isa_bus_new(DEVICE(d), get_system_memory(),
pci_address_space_io(d), errp);
if (!isa_bus) {
return;
}
pci_conf = d->config;
pci_config_set_prog_interface(pci_conf, 0x0);
wmask = d->wmask;
for (i = 0x00; i < 0xff; i++) {
if (i<=0x03 || (i>=0x08 && i<=0x3f)) {
wmask[i] = 0x00;
}
}
memory_region_init_io(&vt82c->superio, OBJECT(d), &superio_ops,
&vt82c->superio_conf, "superio", 2);
memory_region_set_enabled(&vt82c->superio, 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,
&vt82c->superio);
qemu_register_reset(vt82c686b_reset, d);
}
ISABus *vt82c686b_isa_init(PCIBus *bus, int devfn)
{
PCIDevice *d;
d = pci_create_simple_multifunction(bus, devfn, true,
TYPE_VT82C686B_DEVICE);
return ISA_BUS(qdev_get_child_bus(DEVICE(d), "isa.0"));
}
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->desc = "ISA bridge";
dc->vmsd = &vmstate_via;
/*
* Reason: part of VIA VT82C686 southbridge, needs to be wired up,
* e.g. by mips_fulong2e_init()
*/
dc->user_creatable = false;
}
static const TypeInfo via_info = {
.name = TYPE_VT82C686B_DEVICE,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(VT82C686BState),
.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_ac97_info);
type_register_static(&via_mc97_info);
type_register_static(&via_pm_info);
type_register_static(&via_superio_info);
type_register_static(&via_info);
}
type_init(vt82c686b_register_types)
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