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Kernel/PCI: Add helper to determine if device can access IO space

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Liav A 2021-04-23 14:15:08 +03:00 • committed by Andreas Kling
commit 0669dd82e2
Notes: sideshowbarker 2024-07-18 22:57:59 +09:00
2 changed files with 5 additions and 0 deletions
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4
Kernel/PCI/Access.cpp
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@ -204,6 +204,10 @@ void disable_memory_space(Address address)
{ {
write16(address, PCI_COMMAND, read16(address, PCI_COMMAND) & ~(1 << 1)); write16(address, PCI_COMMAND, read16(address, PCI_COMMAND) & ~(1 << 1));
} }
bool is_io_space_enabled(Address address)
{
return (read16(address, PCI_COMMAND) & 1) != 0;
}
void enable_interrupt_line(Address address) void enable_interrupt_line(Address address)
{ {

1
Kernel/PCI/Definitions.h
View file

@ -204,6 +204,7 @@ private:
}; };
ID get_id(PCI::Address); ID get_id(PCI::Address);
bool is_io_space_enabled(Address);
void enumerate(Function<void(Address, ID)> callback); void enumerate(Function<void(Address, ID)> callback);
void enable_interrupt_line(Address); void enable_interrupt_line(Address);
void disable_interrupt_line(Address); void disable_interrupt_line(Address);