Kernel/PCI: Add helpers to enable IO and memory accesses

Author: supercomputer7

Kernel/PCI/Access.cpp

@@ -187,6 +187,24 @@ ID get_id(Address address)
     return { read16(address, PCI_VENDOR_ID), read16(address, PCI_DEVICE_ID) };
 }
 
+void enable_io_space(Address address)
+{
+    write16(address, PCI_COMMAND, read16(address, PCI_COMMAND) | (1 << 0));
+}
+void disable_io_space(Address address)
+{
+    write16(address, PCI_COMMAND, read16(address, PCI_COMMAND) & ~(1 << 0));
+}
+
+void enable_memory_space(Address address)
+{
+    write16(address, PCI_COMMAND, read16(address, PCI_COMMAND) | (1 << 1));
+}
+void disable_memory_space(Address address)
+{
+    write16(address, PCI_COMMAND, read16(address, PCI_COMMAND) & ~(1 << 1));
+}
+
 void enable_interrupt_line(Address address)
 {
     write16(address, PCI_COMMAND, read16(address, PCI_COMMAND) & ~(1 << 10));

Kernel/PCI/Definitions.h

@@ -227,6 +227,10 @@ Optional<u8> get_capabilities_pointer(Address);
 Vector<Capability> get_capabilities(Address);
 void enable_bus_mastering(Address);
 void disable_bus_mastering(Address);
+void enable_io_space(Address);
+void disable_io_space(Address);
+void enable_memory_space(Address);
+void disable_memory_space(Address);
 PhysicalID get_physical_id(Address address);
 
 class Access;