diff options
Diffstat (limited to 'src/devices/machine/sis7018_audio.cpp')
-rw-r--r-- | src/devices/machine/sis7018_audio.cpp | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/src/devices/machine/sis7018_audio.cpp b/src/devices/machine/sis7018_audio.cpp new file mode 100644 index 00000000000..a9eb4416188 --- /dev/null +++ b/src/devices/machine/sis7018_audio.cpp @@ -0,0 +1,126 @@ +// license: BSD-3-Clause +// copyright-holders: Angelo Salese +/************************************************************************************************** + + SiS 7018 Audio device (AC97 complaint) + + TODO: + - Stub interface, to be improved; + - Should be easy to at least inherit SB16/MIDI/game port devices; + +**************************************************************************************************/ + +#include "emu.h" +#include "sis7018_audio.h" + +#define LOG_IO (1U << 1) // log PCI register accesses +#define LOG_TODO (1U << 2) // log unimplemented registers +#define LOG_MAP (1U << 3) // log full remaps +#define LOG_PMC (1U << 4) // log PMC access + +#define VERBOSE (LOG_GENERAL | LOG_IO | LOG_TODO | LOG_MAP | LOG_PMC) +//#define LOG_OUTPUT_FUNC osd_printf_warning + +#include "logmacro.h" + +#define LOGIO(...) LOGMASKED(LOG_IO, __VA_ARGS__) +#define LOGMAP(...) LOGMASKED(LOG_MAP, __VA_ARGS__) +#define LOGTODO(...) LOGMASKED(LOG_TODO, __VA_ARGS__) +#define LOGPMC(...) LOGMASKED(LOG_PMC, __VA_ARGS__) + +DEFINE_DEVICE_TYPE(SIS7018_AUDIO, sis7018_audio_device, "sis7018_audio", "SiS 7018 Audio AC97") + +sis7018_audio_device::sis7018_audio_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) + : pci_device(mconfig, SIS7018_AUDIO, tag, owner, clock) + +{ + // 0x040100 - Multimedia device, audio device (vendor specific i/f) + // 0x01 - Rev 1 + set_ids(0x10397018, 0x01, 0x040100, 0x00); +} + +void sis7018_audio_device::device_add_mconfig(machine_config &config) +{ + +} + +void sis7018_audio_device::config_map(address_map &map) +{ + pci_device::config_map(map); + // map(0x003e, 0x003f) max latency min=0x02, max=0x18 + + map(0x40, 0xe3).rw(FUNC(sis7018_audio_device::unmap_log_r), FUNC(sis7018_audio_device::unmap_log_w)); + + // PMC capability identifier + map(0xdc, 0xdf).r(FUNC(sis7018_audio_device::pmc_id_r)); +// map(0xe0, 0xe3).r(FUNC(sis7018_audio_device::pmc_status_r), FUNC(sis7018_audio_device::pmc_control_w)); +} + +u8 sis7018_audio_device::capptr_r() +{ + LOGIO("AUDIO Read capptr_r [$34]\n"); + return 0xdc; +} + +// TODO: move to specific interface +u32 sis7018_audio_device::pmc_id_r() +{ + LOGPMC("Read PMC ID [$dc]\n"); + // bits 31-16 PPMI v1.0, D1 / D2 supported, no PCI clock for PME# + // bits 15-8 0x00 no NEXT_PTR (NULL terminates here) + // bits 7-0 PM_CAP_ID (0x01 for PMC) + return 0xe6110001; +} + +void sis7018_audio_device::memory_map(address_map &map) +{ + +} + +void sis7018_audio_device::io_map(address_map &map) +{ + +} + +void sis7018_audio_device::map_extra(uint64_t memory_window_start, uint64_t memory_window_end, uint64_t memory_offset, address_space *memory_space, + uint64_t io_window_start, uint64_t io_window_end, uint64_t io_offset, address_space *io_space) +{ +// io_space->install_device(0, 0x03ff, *this, &sis7018_audio_device::io_map); + // TODO: legacy handling, including game port +} + +void sis7018_audio_device::device_start() +{ + pci_device::device_start(); + add_map(256, M_IO, FUNC(sis7018_audio_device::io_map)); + // not explicitly stated, assume 4096 size from the MEM decoding + add_map(4096, M_MEM, FUNC(sis7018_audio_device::memory_map)); +} + + +void sis7018_audio_device::device_reset() +{ + pci_device::device_reset(); + + command = 0x0000; + status = 0x0000; + // INTB# + intr_pin = 2; + // TODO: can be written to with $46=1 + subsystem_id = 0x10397018; +} + +/* + * Debugging + */ + +u8 sis7018_audio_device::unmap_log_r(offs_t offset) +{ + LOGTODO("AUDIO Unemulated [%02x] R\n", offset + 0x40); + return 0; +} + +void sis7018_audio_device::unmap_log_w(offs_t offset, u8 data) +{ + LOGTODO("AUDIO Unemulated [%02x] %02x W\n", offset + 0x40, data); +} |