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https://github.com/RPCSX/rpcsx.git
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120 lines
3.5 KiB
C++
120 lines
3.5 KiB
C++
#include "io-device.hpp"
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#include "orbis/KernelAllocator.hpp"
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#include "orbis/utils/Logs.hpp"
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#include "vm.hpp"
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#include <cinttypes>
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#include <cstdio>
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struct DmemDevice : public IoDevice {
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int index;
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std::uint64_t nextOffset;
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std::uint64_t memBeginAddress;
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};
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struct DmemInstance : public IoDeviceInstance {};
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struct AllocateDirectMemoryArgs {
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std::uint64_t searchStart;
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std::uint64_t searchEnd;
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std::uint64_t len;
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std::uint64_t alignment;
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std::uint32_t memoryType;
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};
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static constexpr auto dmemSize = 4ul * 1024 * 1024 * 1024;
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// static const std::uint64_t nextOffset = 0;
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// static const std::uint64_t memBeginAddress = 0xfe0000000;
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static std::int64_t dmem_instance_ioctl(IoDeviceInstance *instance,
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std::uint64_t request, void *argp) {
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auto device = static_cast<DmemDevice *>(instance->device.get());
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switch (request) {
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case 0x4008800a: // get size
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ORBIS_LOG_ERROR("dmem getTotalSize", device->index, argp);
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*(std::uint64_t *)argp = dmemSize;
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return 0;
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case 0xc0208016: // get avaiable size
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ORBIS_LOG_ERROR("dmem getAvaiableSize", device->index, argp);
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*(std::uint64_t *)argp = dmemSize - device->nextOffset;
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return 0;
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case 0xc0288001: { // sceKernelAllocateDirectMemory
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auto args = reinterpret_cast<AllocateDirectMemoryArgs *>(argp);
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auto alignedOffset =
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(device->nextOffset + args->alignment - 1) & ~(args->alignment - 1);
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ORBIS_LOG_ERROR("dmem allocateDirectMemory", device->index,
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args->searchStart, args->searchEnd, args->len,
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args->alignment, args->memoryType, alignedOffset);
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if (alignedOffset + args->len > dmemSize) {
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return -1;
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}
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args->searchStart = alignedOffset;
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device->nextOffset = alignedOffset + args->len;
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return 0;
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}
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case 0x80108002: { // sceKernelReleaseDirectMemory
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struct Args {
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std::uint64_t address;
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std::uint64_t size;
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};
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auto args = reinterpret_cast<Args *>(argp);
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ORBIS_LOG_TODO("dmem releaseDirectMemory", device->index, args->address,
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args->size);
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// std::fflush(stdout);
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//__builtin_trap();
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return 0;
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}
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default:
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ORBIS_LOG_FATAL("Unhandled dmem ioctl", device->index, request);
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return 0;
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std::fflush(stdout);
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__builtin_trap();
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}
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return -1;
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}
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static void *dmem_instance_mmap(IoDeviceInstance *instance, void *address,
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std::uint64_t size, std::int32_t prot,
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std::int32_t flags, std::int64_t offset) {
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auto device = static_cast<DmemDevice *>(instance->device.get());
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auto target = device->memBeginAddress + offset;
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ORBIS_LOG_WARNING("dmem mmap", device->index, offset, target);
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auto addr = rx::vm::map(reinterpret_cast<void *>(target), size, prot, flags);
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return addr;
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}
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static std::int32_t dmem_device_open(IoDevice *device,
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orbis::Ref<IoDeviceInstance> *instance,
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const char *path, std::uint32_t flags,
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std::uint32_t mode) {
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auto *newInstance = orbis::knew<DmemInstance>();
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newInstance->ioctl = dmem_instance_ioctl;
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newInstance->mmap = dmem_instance_mmap;
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io_device_instance_init(device, newInstance);
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*instance = newInstance;
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return 0;
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}
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IoDevice *createDmemCharacterDevice(int index) {
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auto *newDevice = orbis::knew<DmemDevice>();
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newDevice->open = dmem_device_open;
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newDevice->index = index;
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newDevice->nextOffset = 0;
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newDevice->memBeginAddress = 0xf'e000'0000 + dmemSize * index;
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return newDevice;
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}
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