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