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control: Implement BAR update.

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This commit is contained in:
joevt 2024-02-02 01:45:12 -08:00 committed by dingusdev
parent ea46d08835
commit b5987afaa6
2 changed files with 17 additions and 20 deletions
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36
devices/video/control.cpp
View File

@ -140,28 +140,24 @@ ControlVideo::ControlVideo()
this->display_id = std::unique_ptr<DisplayID> (new DisplayID());
}
void ControlVideo::change_one_bar(uint32_t &aperture, uint32_t aperture_size, uint32_t aperture_new, int bar_num) {
if (aperture != aperture_new) {
if (aperture)
this->host_instance->pci_unregister_mmio_region(aperture, aperture_size, this);
aperture = aperture_new;
if (aperture)
this->host_instance->pci_register_mmio_region(aperture, aperture_size, this);
LOG_F(INFO, "%s: aperture[%d] set to 0x%08X", this->name.c_str(), bar_num, aperture);
}
}
void ControlVideo::notify_bar_change(int bar_num) {
switch (bar_num) {
case 0:
this->io_base = this->bars[bar_num] & ~3;
LOG_F(INFO, "Control: I/O space address set to 0x%08X", this->io_base);
break;
case 1:
if (this->regs_base != (this->bars[bar_num] & 0xFFFFFFF0UL)) {
this->regs_base = this->bars[bar_num] & 0xFFFFFFF0UL;
this->host_instance->pci_register_mmio_region(this->regs_base,
0x1000, this);
LOG_F(INFO, "Control: register aperture set to 0x%08X", this->regs_base);
}
break;
case 2:
if (this->vram_base != (this->bars[bar_num] & 0xFFFFFFF0UL)) {
this->vram_base = this->bars[bar_num] & 0xFFFFFFF0UL;
this->host_instance->pci_register_mmio_region(this->vram_base,
0x04000000, this);
LOG_F(INFO, "Control: VRAM aperture set to 0x%08X", this->vram_base);
}
break;
case 0: change_one_bar(this->io_base , 4, this->bars[bar_num] & ~ 3, bar_num); break;
case 1: change_one_bar(this->regs_base, 0x1000, this->bars[bar_num] & ~15, bar_num); break;
case 2: change_one_bar(this->vram_base, 0x04000000, this->bars[bar_num] & ~15, bar_num); break;
}
}

1
devices/video/control.h
View File

@ -127,6 +127,7 @@ public:
void write(uint32_t rgn_start, uint32_t offset, uint32_t value, int size);
protected:
void change_one_bar(uint32_t &aperture, uint32_t aperture_size, uint32_t aperture_new, int bar_num);
void notify_bar_change(int bar_num);
void enable_display();