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AK: Generalize ByteReader

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Also use it instead of CPU.h's possibly_unaligned_data interface
This commit is contained in:
Hendiadyoin1 2021-07-13 17:17:12 +02:00 • committed by Ali Mohammad Pur
parent b98e741237
commit d761c5024b
4 changed files with 20 additions and 113 deletions
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9
Kernel/Bus/PCI/WindowedMMIOAccess.cpp
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@ -4,6 +4,7 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/ByteReader.h>
#include <AK/Optional.h>
#include <AK/StringView.h>
#include <Kernel/Arch/x86/InterruptDisabler.h>
@ -79,7 +80,7 @@ u16 WindowedMMIOAccess::read16_field(Address address, u32 field)
VERIFY(field < 0xfff);
dbgln_if(PCI_DEBUG, "PCI: MMIO Reading 16-bit field {:#08x} for {}", field, address);
u16 data = 0;
read_possibly_unaligned_data<u16>(get_device_configuration_space(address).value().offset(field & 0xfff).as_ptr(), data);
ByteReader::load<u16>(get_device_configuration_space(address).value().offset(field & 0xfff).as_ptr(), data);
return data;
}
@ -89,7 +90,7 @@ u32 WindowedMMIOAccess::read32_field(Address address, u32 field)
VERIFY(field <= 0xffc);
dbgln_if(PCI_DEBUG, "PCI: MMIO Reading 32-bit field {:#08x} for {}", field, address);
u32 data = 0;
read_possibly_unaligned_data<u32>(get_device_configuration_space(address).value().offset(field & 0xfff).as_ptr(), data);
ByteReader::load<u32>(get_device_configuration_space(address).value().offset(field & 0xfff).as_ptr(), data);
return data;
}
@ -105,14 +106,14 @@ void WindowedMMIOAccess::write16_field(Address address, u32 field, u16 value)
InterruptDisabler disabler;
VERIFY(field < 0xfff);
dbgln_if(PCI_DEBUG, "PCI: MMIO Writing 16-bit field {:#08x}, value={:#02x} for {}", field, value, address);
write_possibly_unaligned_data<u16>(get_device_configuration_space(address).value().offset(field & 0xfff).as_ptr(), value);
ByteReader::store<u16>(get_device_configuration_space(address).value().offset(field & 0xfff).as_ptr(), value);
}
void WindowedMMIOAccess::write32_field(Address address, u32 field, u32 value)
{
InterruptDisabler disabler;
VERIFY(field <= 0xffc);
dbgln_if(PCI_DEBUG, "PCI: MMIO Writing 32-bit field {:#08x}, value={:#02x} for {}", field, value, address);
write_possibly_unaligned_data<u32>(get_device_configuration_space(address).value().offset(field & 0xfff).as_ptr(), value);
ByteReader::store<u32>(get_device_configuration_space(address).value().offset(field & 0xfff).as_ptr(), value);
}
}