// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include "common/common_types.h"
#include "common/swap.h"
#include "core/hle/kernel/errors.h"
#include "core/memory.h"
namespace IPC {
/// Size of the command buffer area, in 32-bit words.
constexpr size_t COMMAND_BUFFER_LENGTH = 0x100 / sizeof(u32);
// These errors are commonly returned by invalid IPC translations, so alias them here for
// convenience.
// TODO(yuriks): These will probably go away once translation is implemented inside the kernel.
using Kernel::ERR_INVALID_BUFFER_DESCRIPTOR;
constexpr auto ERR_INVALID_HANDLE = Kernel::ERR_INVALID_HANDLE_OS;
enum class ControlCommand : u32 {
ConvertSessionToDomain = 0,
ConvertDomainToSession = 1,
DuplicateSession = 2,
QueryPointerBufferSize = 3,
DuplicateSessionEx = 4,
Unspecified,
};
enum class CommandType : u32 {
Close = 2,
Request = 4,
Control = 5,
Unspecified,
};
struct CommandHeader {
union {
u32_le raw_low;
BitField<0, 16, CommandType> type;
BitField<16, 4, u32_le> num_buf_x_descriptors;
BitField<20, 4, u32_le> num_buf_a_descriptors;
BitField<24, 4, u32_le> num_buf_b_descriptors;
BitField<28, 4, u32_le> num_buf_w_descriptors;
};
enum class BufferDescriptorCFlag : u32 {
Disabled = 0,
NoDescriptor = 1,
TwoDesciptors = 2,
};
union {
u32_le raw_high;
BitField<0, 10, u32_le> data_size;
BitField<10, 4, BufferDescriptorCFlag> buf_c_descriptor_flags;
BitField<31, 1, u32_le> enable_handle_descriptor;
};
};
static_assert(sizeof(CommandHeader) == 8, "CommandHeader size is incorrect");
union HandleDescriptorHeader {
u32_le raw_high;
BitField<0, 1, u32_le> send_current_pid;
BitField<1, 4, u32_le> num_handles_to_copy;
BitField<5, 4, u32_le> num_handles_to_move;
};
static_assert(sizeof(HandleDescriptorHeader) == 4, "HandleDescriptorHeader size is incorrect");
struct BufferDescriptorX {
union {
BitField<0, 6, u32_le> counter_bits_0_5;
BitField<6, 3, u32_le> address_bits_36_38;
BitField<9, 3, u32_le> counter_bits_9_11;
BitField<12, 4, u32_le> address_bits_32_35;
BitField<16, 16, u32_le> size;
};
u32_le address_bits_0_31;
u32_le Counter() const {
u32_le counter{ counter_bits_0_5 };
counter |= counter_bits_9_11 << 9;
return counter;
}
VAddr Address() const {
VAddr address{ address_bits_0_31 };
address |= static_cast<VAddr>(address_bits_32_35) << 32;
address |= static_cast<VAddr>(address_bits_36_38) << 36;
return address;
}
};
static_assert(sizeof(BufferDescriptorX) == 8, "BufferDescriptorX size is incorrect");
struct BufferDescriptorABW {
u32_le size_bits_0_31;
u32_le address_bits_0_31;
union {
BitField<0, 2, u32_le> flags;
BitField<2, 3, u32_le> address_bits_36_38;
BitField<24, 4, u32_le> size_bits_32_35;
BitField<28, 4, u32_le> address_bits_32_35;
};
VAddr Address() const {
VAddr address{ address_bits_0_31 };
address |= static_cast<VAddr>(address_bits_32_35) << 32;
address |= static_cast<VAddr>(address_bits_36_38) << 36;
return address;
}
u64 Size() const {
u64 size{ size_bits_0_31 };
size |= static_cast<u64>(size_bits_32_35) << 32;
return size;
}
};
static_assert(sizeof(BufferDescriptorABW) == 12, "BufferDescriptorABW size is incorrect");
struct BufferDescriptorC {
u32_le address_bits_0_31;
union {
BitField<0, 16, u32_le> address_bits_32_47;
BitField<16, 16, u32_le> size;
};
VAddr Address() const {
VAddr address{ address_bits_0_31 };
address |= static_cast<VAddr>(address_bits_32_47) << 32;
return address;
}
};
static_assert(sizeof(BufferDescriptorC) == 8, "BufferDescriptorC size is incorrect");
struct DataPayloadHeader {
u32_le magic;
INSERT_PADDING_WORDS(1);
};
static_assert(sizeof(DataPayloadHeader) == 8, "DataPayloadRequest size is incorrect");
struct DomainMessageHeader {
union {
BitField<0, 8, u32_le> command;
BitField<16, 16, u32_le> size;
};
u32_le object_id;
INSERT_PADDING_WORDS(2);
};
static_assert(sizeof(DomainMessageHeader) == 16, "DomainMessageHeader size is incorrect");
enum DescriptorType : u32 {
// Buffer related desciptors types (mask : 0x0F)
StaticBuffer = 0x02,
PXIBuffer = 0x04,
MappedBuffer = 0x08,
// Handle related descriptors types (mask : 0x30, but need to check for buffer related
// descriptors first )
CopyHandle = 0x00,
MoveHandle = 0x10,
CallingPid = 0x20,
};
constexpr u32 MoveHandleDesc(u32 num_handles = 1) {
return MoveHandle | ((num_handles - 1) << 26);
}
constexpr u32 CopyHandleDesc(u32 num_handles = 1) {
return CopyHandle | ((num_handles - 1) << 26);
}
constexpr u32 CallingPidDesc() {
return CallingPid;
}
constexpr bool IsHandleDescriptor(u32 descriptor) {
return (descriptor & 0xF) == 0x0;
}
constexpr u32 HandleNumberFromDesc(u32 handle_descriptor) {
return (handle_descriptor >> 26) + 1;
}
union StaticBufferDescInfo {
u32 raw;
BitField<0, 4, u32> descriptor_type;
BitField<10, 4, u32> buffer_id;
BitField<14, 18, u32> size;
};
inline u32 StaticBufferDesc(size_t size, u8 buffer_id) {
StaticBufferDescInfo info{};
info.descriptor_type.Assign(StaticBuffer);
info.buffer_id.Assign(buffer_id);
info.size.Assign(static_cast<u32>(size));
return info.raw;
}
/**
* @brief Creates a header describing a buffer to be sent over PXI.
* @param size Size of the buffer. Max 0x00FFFFFF.
* @param buffer_id The Id of the buffer. Max 0xF.
* @param is_read_only true if the buffer is read-only. If false, the buffer is considered to have
* read-write access.
* @return The created PXI buffer header.
*
* The next value is a phys-address of a table located in the BASE memregion.
*/
inline u32 PXIBufferDesc(u32 size, unsigned buffer_id, bool is_read_only) {
u32 type = PXIBuffer;
if (is_read_only)
type |= 0x2;
return type | (size << 8) | ((buffer_id & 0xF) << 4);
}
enum MappedBufferPermissions : u32 {
R = 1,
W = 2,
RW = R | W,
};
union MappedBufferDescInfo {
u32 raw;
BitField<0, 4, u32> flags;
BitField<1, 2, MappedBufferPermissions> perms;
BitField<4, 28, u32> size;
};
inline u32 MappedBufferDesc(size_t size, MappedBufferPermissions perms) {
MappedBufferDescInfo info{};
info.flags.Assign(MappedBuffer);
info.perms.Assign(perms);
info.size.Assign(static_cast<u32>(size));
return info.raw;
}
inline DescriptorType GetDescriptorType(u32 descriptor) {
// Note: Those checks must be done in this order
if (IsHandleDescriptor(descriptor))
return (DescriptorType)(descriptor & 0x30);
// handle the fact that the following descriptors can have rights
if (descriptor & MappedBuffer)
return MappedBuffer;
if (descriptor & PXIBuffer)
return PXIBuffer;
return StaticBuffer;
}
} // namespace IPC
