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Add ability to unregister mmio region.

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mmio regions are registered when a PCI BAR is set. Add the ability to reverse that - for when a PCI BAR is changed.
This commit is contained in:
joevt
2022-12-12 00:16:59 -08:00
parent 911acb4bc2
commit 52fa30b71d
4 changed files with 32 additions and 0 deletions
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22
devices/memctrl/memctrlbase.cpp
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@@ -233,6 +233,28 @@ bool MemCtrlBase::add_mmio_region(uint32_t start_addr, uint32_t size, MMIODevice
return true;
}
bool MemCtrlBase::remove_mmio_region(uint32_t start_addr, uint32_t size, MMIODevice* dev_instance) {
int found = 0;
uint32_t end = start_addr + size - 1;
address_map.erase(std::remove_if(address_map.begin(), address_map.end(),
[start_addr, end, dev_instance, &found](const AddressMapEntry *entry) {
bool result = (start_addr == entry->start && end == entry->end && (!dev_instance || dev_instance == entry->devobj));
found += result;
return result;
}
), address_map.end());
if (found == 0)
LOG_F(ERROR, "Cannot find mmio region 0x%X..0x%X%s%s%s to remove", start_addr, end, dev_instance ? " (" : "", dev_instance ? dev_instance->get_name().c_str() : "", dev_instance ? ")" : "");
else if (found > 1)
LOG_F(ERROR, "Removed %d occurrences of mmio region 0x%X..0x%X%s%s%s", found, start_addr, end, dev_instance ? " (" : "", dev_instance ? dev_instance->get_name().c_str() : "", dev_instance ? ")" : "");
else
LOG_F(INFO, "Removed mmio region 0x%X..0x%X%s%s%s", start_addr, end, dev_instance ? " (" : "", dev_instance ? dev_instance->get_name().c_str() : "", dev_instance ? ")" : "");
return (found > 0);
}
AddressMapEntry* MemCtrlBase::find_rom_region()
{
for (auto& entry : address_map) {