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Diffstat (limited to 'src/devices/bus/sbus/sbus.cpp')
-rw-r--r-- | src/devices/bus/sbus/sbus.cpp | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/src/devices/bus/sbus/sbus.cpp b/src/devices/bus/sbus/sbus.cpp new file mode 100644 index 00000000000..f8363194c5a --- /dev/null +++ b/src/devices/bus/sbus/sbus.cpp @@ -0,0 +1,220 @@ +// license:BSD-3-Clause +// copyright-holders:Ryan Holtz +/*************************************************************************** + + sbus.c - Sun SBus slot bus and card emulation + +***************************************************************************/ + +#include "emu.h" + +// Display boards +#include "bwtwo.h" +#include "cgthree.h" +#include "cgsix.h" + +// Accelerator boards +#include "sunpc.h" + +// Peripheral boards +#include "artecon.h" +#include "hme.h" + +#include "sbus.h" + +void sbus_cards(device_slot_interface &device) +{ + device.option_add("bwtwo", SBUS_BWTWO); /* Sun bwtwo monochrome display board */ + device.option_add("cgthree", SBUS_CGTHREE); /* Sun cgthree color display board */ + device.option_add("turbogx", SBUS_TURBOGX); /* Sun TurboGX 8-bit color display board */ + device.option_add("turbogxp", SBUS_TURBOGXP); /* Sun TurboGX+ 8-bit color display board */ + device.option_add("sunpc", SBUS_SUNPC); /* Sun SunPC 5x86 Accelerator board */ + device.option_add("hme", SBUS_HME); /* Sun SunSwift 10/100 + Fast Wide SCSI "Colossus" board */ + device.option_add("sb300p", SBUS_SB300P); /* Artecon CB300P 3-serial/1-parallel board */ +} + +DEFINE_DEVICE_TYPE(SBUS_SLOT, sbus_slot_device, "sbus_slot", "Sun SBus Slot") + +sbus_slot_device::sbus_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) + : sbus_slot_device(mconfig, SBUS_SLOT, tag, owner, clock) +{ +} + +sbus_slot_device::sbus_slot_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) + : device_t(mconfig, type, tag, owner, clock) + , device_slot_interface(mconfig, *this) + , m_sbus(*this, finder_base::DUMMY_TAG) +{ +} + +void sbus_slot_device::device_validity_check(validity_checker &valid) const +{ + device_t *const card(get_card_device()); + if (card && !dynamic_cast<device_sbus_card_interface *>(card)) + osd_printf_error("Card device %s (%s) does not implement device_sbus_card_interface\n", card->tag(), card->name()); +} + +void sbus_slot_device::device_resolve_objects() +{ + device_sbus_card_interface *const sbus_card(dynamic_cast<device_sbus_card_interface *>(get_card_device())); + if (sbus_card) + sbus_card->set_sbus(m_sbus, tag()); +} + +void sbus_slot_device::device_start() +{ + device_t *const card(get_card_device()); + if (card && !dynamic_cast<device_sbus_card_interface *>(card)) + throw emu_fatalerror("sbus_slot_device: card device %s (%s) does not implement device_sbus_card_interface\n", card->tag(), card->name()); +} + + +DEFINE_DEVICE_TYPE(SBUS, sbus_device, "sbus", "Sun SBus") + +device_memory_interface::space_config_vector sbus_device::memory_space_config() const +{ + return space_config_vector { + std::make_pair(0, &m_space_config) + }; +} + +sbus_device::sbus_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) + : sbus_device(mconfig, SBUS, tag, owner, clock) +{ +} + +sbus_device::sbus_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) + : device_t(mconfig, type, tag, owner, clock) + , device_memory_interface(mconfig, *this) + , m_space_config("SBus Space", ENDIANNESS_BIG, 32, 32, 0, address_map_constructor()) + , m_maincpu(*this, finder_base::DUMMY_TAG) + , m_type1space(*this, finder_base::DUMMY_TAG) + , m_irq_cb{{*this}, {*this}, {*this}, {*this}, {*this}, {*this}, {*this}} + , m_buserr(*this) +{ +} + +void sbus_device::device_resolve_objects() +{ + // resolve callbacks + for (int i = 0; i < 7; i++) + m_irq_cb[i].resolve_safe(); + m_buserr.resolve_safe(); +} + +void sbus_device::device_start() +{ + std::fill(std::begin(m_device_list), std::end(m_device_list), nullptr); + + m_space = &space(0); + m_space->install_readwrite_handler(0x00000000, 0x01ffffff, read32_delegate(FUNC(sbus_device::slot_timeout_r<0>), this), write32_delegate(FUNC(sbus_device::slot_timeout_w<0>), this)); + m_space->install_readwrite_handler(0x02000000, 0x03ffffff, read32_delegate(FUNC(sbus_device::slot_timeout_r<1>), this), write32_delegate(FUNC(sbus_device::slot_timeout_w<1>), this)); + m_space->install_readwrite_handler(0x04000000, 0x05ffffff, read32_delegate(FUNC(sbus_device::slot_timeout_r<2>), this), write32_delegate(FUNC(sbus_device::slot_timeout_w<2>), this)); +} + +template <unsigned Slot> READ32_MEMBER(sbus_device::slot_timeout_r) +{ + m_maincpu->set_mae(); + m_buserr(0, 0x20); + m_buserr(1, 0xffa00000 + (Slot << 21)); + return 0; +} + +template <unsigned Slot> WRITE32_MEMBER(sbus_device::slot_timeout_w) +{ + m_maincpu->set_mae(); + m_buserr(0, 0x8020); + m_buserr(1, 0xffa00000 + (Slot << 21)); +} + +READ32_MEMBER(sbus_device::read) +{ + return m_space->read_dword(offset << 2, mem_mask); +} + +WRITE32_MEMBER(sbus_device::write) +{ + m_space->write_dword(offset << 2, data, mem_mask); +} + +device_sbus_card_interface *sbus_device::get_sbus_card(int slot) +{ + if (slot < 0) + { + return nullptr; + } + + if (m_device_list[slot]) + { + return m_device_list[slot]; + } + + return nullptr; +} + +void sbus_device::add_sbus_card(int slot, device_sbus_card_interface *card) +{ + m_device_list[slot] = card; + card->install_device(); +} + +void sbus_device::set_irq_line(int state, int line) +{ + m_irq_cb[line](state); +} + + + +device_sbus_card_interface::device_sbus_card_interface(const machine_config &mconfig, device_t &device) + : device_slot_card_interface(mconfig, device) + , m_sbus_finder(device, finder_base::DUMMY_TAG) + , m_sbus(nullptr) + , m_sbus_slottag(nullptr) + , m_slot(-1) + , m_base(0) +{ +} + +device_sbus_card_interface::~device_sbus_card_interface() +{ +} + +void device_sbus_card_interface::interface_validity_check(validity_checker &valid) const +{ + if (m_sbus_finder && m_sbus && (m_sbus != m_sbus_finder)) + osd_printf_error("Contradictory buses configured (%s and %s)\n", m_sbus_finder->tag(), m_sbus->tag()); +} + +void device_sbus_card_interface::interface_pre_start() +{ + device_slot_card_interface::interface_pre_start(); + + if (!m_sbus) + { + m_sbus = m_sbus_finder; + if (!m_sbus) + fatalerror("Can't find Sun SBus device %s\n", m_sbus_finder.finder_tag()); + } + + if (0 > m_slot) + { + if (!m_sbus->started()) + throw device_missing_dependencies(); + + // extract the slot number from the last digit of the slot tag + size_t const tlen = strlen(m_sbus_slottag); + + m_slot = (m_sbus_slottag[tlen - 1] - '1'); + if (m_slot < 0 || m_slot > 2) + fatalerror("Slot %x out of range for Sun SBus\n", m_slot); + + m_base = m_slot << 25; + m_sbus->add_sbus_card(m_slot, this); + } +} + +void device_sbus_card_interface::set_sbus(sbus_device *sbus, const char *slottag) +{ + m_sbus = sbus; + m_sbus_slottag = slottag; +} |