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grandcentral: pass Curio DREQ state to its DMA channel.

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Bit 5 of the channel status register of the SCSI0 DMA channel
reflects the DREQ signal from Curio.
The old SCSI API still used in some Macintosh applications
- most notably HD SC Setup and Drive Setup - relies on this API
and that signal to be implemented.
This commit is contained in:
Maxim Poliakovski 2024-11-03 14:37:44 +01:00
parent 86ce9b0bb1
commit c6116fcc88
1 changed files with 3 additions and 0 deletions
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3
devices/ioctrl/grandcentral.cpp
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@ -126,6 +126,9 @@ GrandCentral::GrandCentral() : PCIDevice("mac-io/grandcentral"), InterruptCtrl()
this->curio_dma = std::unique_ptr<DMAChannel> (new DMAChannel("curio_scsi"));
this->curio_dma->register_dma_int(this, this->register_dma_int(IntSrc::DMA_SCSI_CURIO));
this->curio->set_dma_channel(this->curio_dma.get());
this->curio->set_drq_callback([this](const uint8_t drq_state) {
this->curio_dma->set_stat((drq_state & 1) << 5);
});
// connect Ethernet HW
this->mace = dynamic_cast<MaceController*>(gMachineObj->get_comp_by_name("Mace"));