// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later

#pragma once

#include "common/bit_field.h"
#include "common/types.h"

constexpr u64 SCE_KERNEL_TOTAL_MEM = 5248_MB;
constexpr u64 SCE_KERNEL_TOTAL_MEM_PRO = 5888_MB;

constexpr u64 SCE_FLEXIBLE_MEMORY_BASE = 64_MB;
constexpr u64 SCE_FLEXIBLE_MEMORY_SIZE = 512_MB;

namespace Core::Loader {
class SymbolsResolver;
}

namespace Libraries::Kernel {

enum MemoryTypes : u32 {
    SCE_KERNEL_WB_ONION = 0,  // write - back mode (Onion bus)
    SCE_KERNEL_WC_GARLIC = 3, // write - combining mode (Garlic bus)
    SCE_KERNEL_WB_GARLIC = 10 // write - back mode (Garlic bus)
};

enum MemoryFlags : u32 {
    SCE_KERNEL_MAP_FIXED = 0x0010, // Fixed
    SCE_KERNEL_MAP_NO_OVERWRITE = 0x0080,
    SCE_KERNEL_MAP_NO_COALESCE = 0x400000
};

enum MemoryProtection : u32 {
    SCE_KERNEL_PROT_CPU_READ = 0x01,  // Permit reads from the CPU
    SCE_KERNEL_PROT_CPU_RW = 0x02,    // Permit reads/writes from the CPU
    SCE_KERNEL_PROT_CPU_WRITE = 0x02, // Permit reads/writes from the CPU (same)
    SCE_KERNEL_PROT_GPU_READ = 0x10,  // Permit reads from the GPU
    SCE_KERNEL_PROT_GPU_WRITE = 0x20, // Permit writes from the GPU
    SCE_KERNEL_PROT_GPU_RW = 0x30     // Permit reads/writes from the GPU
};

enum MemoryOpTypes : u32 {
    ORBIS_KERNEL_MAP_OP_MAP_DIRECT = 0,
    ORBIS_KERNEL_MAP_OP_UNMAP = 1,
    ORBIS_KERNEL_MAP_OP_PROTECT = 2,
    ORBIS_KERNEL_MAP_OP_MAP_FLEXIBLE = 3,
    ORBIS_KERNEL_MAP_OP_TYPE_PROTECT = 4
};

constexpr u32 ORBIS_KERNEL_MAXIMUM_NAME_LENGTH = 32;

struct OrbisQueryInfo {
    uintptr_t start;
    uintptr_t end;
    int memoryType;
};

struct OrbisVirtualQueryInfo {
    uintptr_t start;
    uintptr_t end;
    size_t offset;
    s32 protection;
    s32 memory_type;
    u8 is_flexible : 1;
    u8 is_direct : 1;
    u8 is_stack : 1;
    u8 is_pooled : 1;
    u8 is_committed : 1;
    char name[ORBIS_KERNEL_MAXIMUM_NAME_LENGTH];
};
static_assert(sizeof(OrbisVirtualQueryInfo) == 72,
              "OrbisVirtualQueryInfo struct size is incorrect");

struct OrbisKernelBatchMapEntry {
    void* start;
    size_t offset;
    size_t length;
    char protection;
    char type;
    short reserved;
    int operation;
};

enum class OrbisKernelMemoryPoolOpcode : u32 {
    Commit = 1,
    Decommit = 2,
    Protect = 3,
    TypeProtect = 4,
    Move = 5,
};

struct OrbisKernelMemoryPoolBatchEntry {
    OrbisKernelMemoryPoolOpcode opcode;
    u32 flags;
    union {
        struct {
            void* addr;
            u64 len;
            u8 prot;
            u8 type;
        } commit_params;
        struct {
            void* addr;
            u64 len;
        } decommit_params;
        struct {
            void* addr;
            u64 len;
            u8 prot;
        } protect_params;
        struct {
            void* addr;
            u64 len;
            u8 prot;
            u8 type;
        } type_protect_params;
        struct {
            void* dest_addr;
            void* src_addr;
            u64 len;
        } move_params;
        uintptr_t padding[3];
    };
};

u64 PS4_SYSV_ABI sceKernelGetDirectMemorySize();
int PS4_SYSV_ABI sceKernelAllocateDirectMemory(s64 searchStart, s64 searchEnd, u64 len,
                                               u64 alignment, int memoryType, s64* physAddrOut);
int PS4_SYSV_ABI sceKernelMapNamedDirectMemory(void** addr, u64 len, int prot, int flags,
                                               s64 directMemoryStart, u64 alignment,
                                               const char* name);
int PS4_SYSV_ABI sceKernelMapDirectMemory(void** addr, u64 len, int prot, int flags,
                                          s64 directMemoryStart, u64 alignment);
s32 PS4_SYSV_ABI sceKernelAllocateMainDirectMemory(size_t len, size_t alignment, int memoryType,
                                                   s64* physAddrOut);
s32 PS4_SYSV_ABI sceKernelReleaseDirectMemory(u64 start, size_t len);
s32 PS4_SYSV_ABI sceKernelCheckedReleaseDirectMemory(u64 start, size_t len);
s32 PS4_SYSV_ABI sceKernelAvailableDirectMemorySize(u64 searchStart, u64 searchEnd,
                                                    size_t alignment, u64* physAddrOut,
                                                    size_t* sizeOut);
s32 PS4_SYSV_ABI sceKernelVirtualQuery(const void* addr, int flags, OrbisVirtualQueryInfo* info,
                                       size_t infoSize);
s32 PS4_SYSV_ABI sceKernelReserveVirtualRange(void** addr, u64 len, int flags, u64 alignment);
s32 PS4_SYSV_ABI sceKernelMapNamedFlexibleMemory(void** addr_in_out, u64 len, s32 prot, s32 flags,
                                                 const char* name);
s32 PS4_SYSV_ABI sceKernelMapFlexibleMemory(void** addr_in_out, u64 len, s32 prot, s32 flags);
int PS4_SYSV_ABI sceKernelQueryMemoryProtection(void* addr, void** start, void** end, u32* prot);

s32 PS4_SYSV_ABI sceKernelMprotect(const void* addr, u64 size, s32 prot);

s32 PS4_SYSV_ABI sceKernelMtypeprotect(const void* addr, u64 size, s32 mtype, s32 prot);

int PS4_SYSV_ABI sceKernelDirectMemoryQuery(u64 offset, int flags, OrbisQueryInfo* query_info,
                                            size_t infoSize);
s32 PS4_SYSV_ABI sceKernelAvailableFlexibleMemorySize(size_t* sizeOut);
void PS4_SYSV_ABI _sceKernelRtldSetApplicationHeapAPI(void* func[]);
int PS4_SYSV_ABI sceKernelGetDirectMemoryType(u64 addr, int* directMemoryTypeOut,
                                              void** directMemoryStartOut,
                                              void** directMemoryEndOut);
int PS4_SYSV_ABI sceKernelIsStack(void* addr, void** start, void** end);

s32 PS4_SYSV_ABI sceKernelBatchMap(OrbisKernelBatchMapEntry* entries, int numEntries,
                                   int* numEntriesOut);
s32 PS4_SYSV_ABI sceKernelBatchMap2(OrbisKernelBatchMapEntry* entries, int numEntries,
                                    int* numEntriesOut, int flags);

s32 PS4_SYSV_ABI sceKernelSetVirtualRangeName(const void* addr, u64 len, const char* name);

s32 PS4_SYSV_ABI sceKernelMemoryPoolExpand(u64 searchStart, u64 searchEnd, u64 len, u64 alignment,
                                           u64* physAddrOut);
s32 PS4_SYSV_ABI sceKernelMemoryPoolReserve(void* addr_in, u64 len, u64 alignment, s32 flags,
                                            void** addr_out);
s32 PS4_SYSV_ABI sceKernelMemoryPoolCommit(void* addr, u64 len, s32 type, s32 prot, s32 flags);
s32 PS4_SYSV_ABI sceKernelMemoryPoolDecommit(void* addr, u64 len, s32 flags);
s32 PS4_SYSV_ABI sceKernelMemoryPoolBatch(const OrbisKernelMemoryPoolBatchEntry* entries, s32 count,
                                          s32* num_processed, s32 flags);

int PS4_SYSV_ABI sceKernelMunmap(void* addr, size_t len);

void RegisterMemory(Core::Loader::SymbolsResolver* sym);

} // namespace Libraries::Kernel