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vt82c686: QOM-ify superio related functionality 

Collect superio functionality and its controlling config registers
handling in an abstract VIA_SUPERIO class that is a subclass of
ISA_SUPERIO and put vt82c686b specific parts in a subclass of this
abstract class.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <fbcc8cc8baf83f327612a1ef1c14bcbcdb0e7edb.1616680239.git.balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
BALATON Zoltan 2021-03-25 14:50:39 +01:00 committed by David Gibson
parent 2da8a6bcdc
commit f028c2ded2
2 changed files with 134 additions and 67 deletions
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200
hw/isa/vt82c686.c
View File

@ -265,15 +265,80 @@ static const TypeInfo vt8231_pm_info = {
};
typedef struct SuperIOConfig {
uint8_t regs[0x100];
MemoryRegion io;
} SuperIOConfig;
#define TYPE_VIA_SUPERIO "via-superio"
OBJECT_DECLARE_SIMPLE_TYPE(ViaSuperIOState, VIA_SUPERIO)
static void superio_cfg_write(void *opaque, hwaddr addr, uint64_t data,
unsigned size)
struct ViaSuperIOState {
ISASuperIODevice superio;
uint8_t regs[0x100];
const MemoryRegionOps *io_ops;
MemoryRegion io;
};
static inline void via_superio_io_enable(ViaSuperIOState *s, bool enable)
{
SuperIOConfig *sc = opaque;
memory_region_set_enabled(&s->io, enable);
}
static void via_superio_realize(DeviceState *d, Error **errp)
{
ViaSuperIOState *s = VIA_SUPERIO(d);
ISASuperIOClass *ic = ISA_SUPERIO_GET_CLASS(s);
Error *local_err = NULL;
assert(s->io_ops);
ic->parent_realize(d, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
memory_region_init_io(&s->io, OBJECT(d), s->io_ops, s, "via-superio", 2);
memory_region_set_enabled(&s->io, false);
/* The floppy also uses 0x3f0 and 0x3f1 but this seems to work anyway */
memory_region_add_subregion(isa_address_space_io(ISA_DEVICE(s)), 0x3f0,
&s->io);
}
static uint64_t via_superio_cfg_read(void *opaque, hwaddr addr, unsigned size)
{
ViaSuperIOState *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 void via_superio_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass);
sc->parent_realize = dc->realize;
dc->realize = via_superio_realize;
}
static const TypeInfo via_superio_info = {
.name = TYPE_VIA_SUPERIO,
.parent = TYPE_ISA_SUPERIO,
.instance_size = sizeof(ViaSuperIOState),
.class_size = sizeof(ISASuperIOClass),
.class_init = via_superio_class_init,
.abstract = true,
};
#define TYPE_VT82C686B_SUPERIO "vt82c686b-superio"
static void vt82c686b_superio_cfg_write(void *opaque, hwaddr addr,
uint64_t data, unsigned size)
{
ViaSuperIOState *sc = opaque;
uint8_t idx = sc->regs[0];
if (addr == 0) { /* config index register */
@ -304,25 +369,9 @@ static void superio_cfg_write(void *opaque, hwaddr addr, uint64_t data,
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,
static const MemoryRegionOps vt82c686b_superio_cfg_ops = {
.read = via_superio_cfg_read,
.write = vt82c686b_superio_cfg_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl = {
.min_access_size = 1,
@ -330,13 +379,66 @@ static const MemoryRegionOps superio_cfg_ops = {
},
};
static void vt82c686b_superio_reset(DeviceState *dev)
{
ViaSuperIOState *s = VIA_SUPERIO(dev);
memset(s->regs, 0, sizeof(s->regs));
/* Device ID */
vt82c686b_superio_cfg_write(s, 0, 0xe0, 1);
vt82c686b_superio_cfg_write(s, 1, 0x3c, 1);
/* Function select - all disabled */
vt82c686b_superio_cfg_write(s, 0, 0xe2, 1);
vt82c686b_superio_cfg_write(s, 1, 0x03, 1);
/* Floppy ctrl base addr 0x3f0-7 */
vt82c686b_superio_cfg_write(s, 0, 0xe3, 1);
vt82c686b_superio_cfg_write(s, 1, 0xfc, 1);
/* Parallel port base addr 0x378-f */
vt82c686b_superio_cfg_write(s, 0, 0xe6, 1);
vt82c686b_superio_cfg_write(s, 1, 0xde, 1);
/* Serial port 1 base addr 0x3f8-f */
vt82c686b_superio_cfg_write(s, 0, 0xe7, 1);
vt82c686b_superio_cfg_write(s, 1, 0xfe, 1);
/* Serial port 2 base addr 0x2f8-f */
vt82c686b_superio_cfg_write(s, 0, 0xe8, 1);
vt82c686b_superio_cfg_write(s, 1, 0xbe, 1);
vt82c686b_superio_cfg_write(s, 0, 0, 1);
}
static void vt82c686b_superio_init(Object *obj)
{
VIA_SUPERIO(obj)->io_ops = &vt82c686b_superio_cfg_ops;
}
static void vt82c686b_superio_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass);
dc->reset = vt82c686b_superio_reset;
sc->serial.count = 2;
sc->parallel.count = 1;
sc->ide.count = 0; /* emulated by via-ide */
sc->floppy.count = 1;
}
static const TypeInfo vt82c686b_superio_info = {
.name = TYPE_VT82C686B_SUPERIO,
.parent = TYPE_VIA_SUPERIO,
.instance_size = sizeof(ViaSuperIOState),
.instance_init = vt82c686b_superio_init,
.class_size = sizeof(ISASuperIOClass),
.class_init = vt82c686b_superio_class_init,
};
OBJECT_DECLARE_SIMPLE_TYPE(VT82C686BISAState, VT82C686B_ISA)
struct VT82C686BISAState {
PCIDevice dev;
qemu_irq cpu_intr;
SuperIOConfig superio_cfg;
ViaSuperIOState *via_sio;
};
static void via_isa_request_i8259_irq(void *opaque, int irq, int level)
@ -354,7 +456,7 @@ static void vt82c686b_write_config(PCIDevice *d, uint32_t addr,
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));
via_superio_io_enable(s->via_sio, val & BIT(1));
}
}
@ -386,13 +488,6 @@ static void vt82c686b_isa_reset(DeviceState *dev)
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)
@ -410,7 +505,8 @@ static void vt82c686b_realize(PCIDevice *d, Error **errp)
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);
s->via_sio = VIA_SUPERIO(isa_create_simple(isa_bus,
TYPE_VT82C686B_SUPERIO));
mc146818_rtc_init(isa_bus, 2000, NULL);
for (i = 0; i < PCI_CONFIG_HEADER_SIZE; i++) {
@ -418,16 +514,6 @@ static void vt82c686b_realize(PCIDevice *d, Error **errp)
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)
@ -463,32 +549,14 @@ static const TypeInfo via_info = {
};
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_register_static(&vt82c686b_superio_info);
type_register_static(&via_info);
}
type_init(vt82c686b_register_types)

1
include/hw/isa/vt82c686.h
View File

@ -2,7 +2,6 @@
#define HW_VT82C686_H
#define TYPE_VT82C686B_ISA "vt82c686b-isa"
#define TYPE_VT82C686B_SUPERIO "vt82c686b-superio"
#define TYPE_VT82C686B_PM "vt82c686b-pm"
#define TYPE_VT8231_PM "vt8231-pm"
#define TYPE_VIA_AC97 "via-ac97"