diff options
Diffstat (limited to 'hw/isa/vt82c686.c')
| -rw-r--r-- | hw/isa/vt82c686.c | 423 |
1 files changed, 342 insertions, 81 deletions
diff --git a/hw/isa/vt82c686.c b/hw/isa/vt82c686.c index 98325bb32b..f57f3e7067 100644 --- a/hw/isa/vt82c686.c +++ b/hw/isa/vt82c686.c @@ -8,6 +8,9 @@ * * Contributions after 2012-01-13 are licensed under the terms of the * GNU GPL, version 2 or (at your option) any later version. + * + * VT8231 south bridge support and general clean up to allow it + * Copyright (c) 2018-2020 BALATON Zoltan */ #include "qemu/osdep.h" @@ -30,7 +33,6 @@ #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" @@ -265,15 +267,80 @@ static const TypeInfo vt8231_pm_info = { }; -typedef struct SuperIOConfig { +#define TYPE_VIA_SUPERIO "via-superio" +OBJECT_DECLARE_SIMPLE_TYPE(ViaSuperIOState, VIA_SUPERIO) + +struct ViaSuperIOState { + ISASuperIODevice superio; uint8_t regs[0x100]; + const MemoryRegionOps *io_ops; MemoryRegion io; -} SuperIOConfig; +}; + +static inline void via_superio_io_enable(ViaSuperIOState *s, bool enable) +{ + 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 superio_cfg_write(void *opaque, hwaddr addr, uint64_t data, - unsigned size) +static void via_superio_class_init(ObjectClass *klass, void *data) { - SuperIOConfig *sc = opaque; + 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 +371,105 @@ 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) +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, + .max_access_size = 1, + }, +}; + +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) { - SuperIOConfig *sc = opaque; + 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, +}; + + +#define TYPE_VT8231_SUPERIO "vt8231-superio" + +static void vt8231_superio_cfg_write(void *opaque, hwaddr addr, + uint64_t data, unsigned size) +{ + ViaSuperIOState *sc = opaque; uint8_t idx = sc->regs[0]; - uint8_t val = sc->regs[idx]; - if (addr == 0) { - return idx; + if (addr == 0) { /* config index register */ + sc->regs[0] = data; + return; } - if (addr == 1 && idx == 0) { - val = 0; /* reading reg 0 where we store index value */ + + /* config data register */ + trace_via_superio_write(idx, data); + switch (idx) { + case 0x00 ... 0xdf: + case 0xe7 ... 0xef: + case 0xf0 ... 0xf1: + case 0xf5: + case 0xf8: + case 0xfd: + /* ignore write to read only registers */ + return; + default: + qemu_log_mask(LOG_UNIMP, + "via_superio_cfg: unimplemented register 0x%x\n", idx); + break; } - trace_via_superio_read(idx, val); - return val; + sc->regs[idx] = data; } -static const MemoryRegionOps superio_cfg_ops = { - .read = superio_cfg_read, - .write = superio_cfg_write, +static const MemoryRegionOps vt8231_superio_cfg_ops = { + .read = via_superio_cfg_read, + .write = vt8231_superio_cfg_write, .endianness = DEVICE_NATIVE_ENDIAN, .impl = { .min_access_size = 1, @@ -330,47 +477,119 @@ static const MemoryRegionOps superio_cfg_ops = { }, }; +static void vt8231_superio_reset(DeviceState *dev) +{ + ViaSuperIOState *s = VIA_SUPERIO(dev); + + memset(s->regs, 0, sizeof(s->regs)); + /* Device ID */ + s->regs[0xf0] = 0x3c; + /* Device revision */ + s->regs[0xf1] = 0x01; + /* Function select - all disabled */ + vt8231_superio_cfg_write(s, 0, 0xf2, 1); + vt8231_superio_cfg_write(s, 1, 0x03, 1); + /* Serial port base addr */ + vt8231_superio_cfg_write(s, 0, 0xf4, 1); + vt8231_superio_cfg_write(s, 1, 0xfe, 1); + /* Parallel port base addr */ + vt8231_superio_cfg_write(s, 0, 0xf6, 1); + vt8231_superio_cfg_write(s, 1, 0xde, 1); + /* Floppy ctrl base addr */ + vt8231_superio_cfg_write(s, 0, 0xf7, 1); + vt8231_superio_cfg_write(s, 1, 0xfc, 1); + + vt8231_superio_cfg_write(s, 0, 0, 1); +} + +static void vt8231_superio_init(Object *obj) +{ + VIA_SUPERIO(obj)->io_ops = &vt8231_superio_cfg_ops; +} -OBJECT_DECLARE_SIMPLE_TYPE(VT82C686BISAState, VT82C686B_ISA) +static uint16_t vt8231_superio_serial_iobase(ISASuperIODevice *sio, + uint8_t index) +{ + return 0x2f8; /* FIXME: This should be settable via registers f2-f4 */ +} -struct VT82C686BISAState { +static void vt8231_superio_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass); + + dc->reset = vt8231_superio_reset; + sc->serial.count = 1; + sc->serial.get_iobase = vt8231_superio_serial_iobase; + sc->parallel.count = 1; + sc->ide.count = 0; /* emulated by via-ide */ + sc->floppy.count = 1; +} + +static const TypeInfo vt8231_superio_info = { + .name = TYPE_VT8231_SUPERIO, + .parent = TYPE_VIA_SUPERIO, + .instance_size = sizeof(ViaSuperIOState), + .instance_init = vt8231_superio_init, + .class_size = sizeof(ISASuperIOClass), + .class_init = vt8231_superio_class_init, +}; + + +#define TYPE_VIA_ISA "via-isa" +OBJECT_DECLARE_SIMPLE_TYPE(ViaISAState, VIA_ISA) + +struct ViaISAState { PCIDevice dev; qemu_irq cpu_intr; - SuperIOConfig superio_cfg; + ViaSuperIOState *via_sio; +}; + +static const VMStateDescription vmstate_via = { + .name = "via-isa", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(dev, ViaISAState), + VMSTATE_END_OF_LIST() + } +}; + +static const TypeInfo via_isa_info = { + .name = TYPE_VIA_ISA, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(ViaISAState), + .abstract = true, + .interfaces = (InterfaceInfo[]) { + { INTERFACE_CONVENTIONAL_PCI_DEVICE }, + { }, + }, }; static void via_isa_request_i8259_irq(void *opaque, int irq, int level) { - VT82C686BISAState *s = opaque; + ViaISAState *s = opaque; qemu_set_irq(s->cpu_intr, level); } +/* TYPE_VT82C686B_ISA */ + static void vt82c686b_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int len) { - VT82C686BISAState *s = VT82C686B_ISA(d); + ViaISAState *s = VIA_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)); + via_superio_io_enable(s->via_sio, 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); + ViaISAState *s = VIA_ISA(dev); uint8_t *pci_conf = s->dev.config; pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0); @@ -386,18 +605,11 @@ 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) { - VT82C686BISAState *s = VT82C686B_ISA(d); + ViaISAState *s = VIA_ISA(d); DeviceState *dev = DEVICE(d); ISABus *isa_bus; qemu_irq *isa_irq; @@ -410,7 +622,8 @@ 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++) { @@ -418,19 +631,9 @@ 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) +static void vt82c686b_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); @@ -438,47 +641,101 @@ static void via_class_init(ObjectClass *klass, void *data) 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->device_id = PCI_DEVICE_ID_VIA_82C686B_ISA; 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() - */ + /* Reason: part of VIA VT82C686 southbridge, needs to be wired up */ dc->user_creatable = false; } -static const TypeInfo via_info = { +static const TypeInfo vt82c686b_isa_info = { .name = TYPE_VT82C686B_ISA, - .parent = TYPE_PCI_DEVICE, - .instance_size = sizeof(VT82C686BISAState), - .class_init = via_class_init, - .interfaces = (InterfaceInfo[]) { - { INTERFACE_CONVENTIONAL_PCI_DEVICE }, - { }, - }, + .parent = TYPE_VIA_ISA, + .instance_size = sizeof(ViaISAState), + .class_init = vt82c686b_class_init, }; +/* TYPE_VT8231_ISA */ -static void vt82c686b_superio_class_init(ObjectClass *klass, void *data) +static void vt8231_write_config(PCIDevice *d, uint32_t addr, + uint32_t val, int len) { - ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass); + ViaISAState *s = VIA_ISA(d); - sc->serial.count = 2; - sc->parallel.count = 1; - sc->ide.count = 0; - sc->floppy.count = 1; + trace_via_isa_write(addr, val, len); + pci_default_write_config(d, addr, val, len); + if (addr == 0x50) { + /* BIT(2): enable or disable superio config io ports */ + via_superio_io_enable(s->via_sio, val & BIT(2)); + } } -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 vt8231_isa_reset(DeviceState *dev) +{ + ViaISAState *s = VIA_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[0x58] = 0x40; /* Miscellaneous Control 0 */ + pci_conf[0x67] = 0x08; /* Fast IR Config */ + pci_conf[0x6b] = 0x01; /* Fast IR I/O Base */ +} + +static void vt8231_realize(PCIDevice *d, Error **errp) +{ + ViaISAState *s = VIA_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); + s->via_sio = VIA_SUPERIO(isa_create_simple(isa_bus, TYPE_VT8231_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; + } + } +} + +static void vt8231_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->realize = vt8231_realize; + k->config_write = vt8231_write_config; + k->vendor_id = PCI_VENDOR_ID_VIA; + k->device_id = PCI_DEVICE_ID_VIA_8231_ISA; + k->class_id = PCI_CLASS_BRIDGE_ISA; + k->revision = 0x10; + dc->reset = vt8231_isa_reset; + dc->desc = "ISA bridge"; + dc->vmsd = &vmstate_via; + /* Reason: part of VIA VT8231 southbridge, needs to be wired up */ + dc->user_creatable = false; +} + +static const TypeInfo vt8231_isa_info = { + .name = TYPE_VT8231_ISA, + .parent = TYPE_VIA_ISA, + .instance_size = sizeof(ViaISAState), + .class_init = vt8231_class_init, }; @@ -487,8 +744,12 @@ 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(&vt8231_superio_info); + type_register_static(&via_isa_info); + type_register_static(&vt82c686b_isa_info); + type_register_static(&vt8231_isa_info); } type_init(vt82c686b_register_types) |