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This commit is contained in:
Billy Laws 2021-09-21 21:01:44 +01:00 committed by ◱ Mark
parent 8db2cf29f2
commit a18f1aa889
15 changed files with 81 additions and 122 deletions
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2
app/src/main/cpp/skyline/common.h
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@ -84,8 +84,6 @@ namespace skyline {
/**
* @brief A wrapper around std::optional that also stores a HOS result code
* @tparam ValueType The object type to hold
* @tparam ResultType The result type to hold
*/
template<typename ValueType, typename ResultType = Result>
class ResultValue {

20
app/src/main/cpp/skyline/common/address_space.h
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@ -14,10 +14,10 @@ namespace skyline {
* @brief FlatAddressSpaceMap provides a generic VA->PA mapping implementation using a sorted vector
*/
template<typename VaType, VaType UnmappedVa, typename PaType, PaType UnmappedPa, bool PaContigSplit, size_t AddressSpaceBits> requires AddressSpaceValid<VaType, AddressSpaceBits>
class FlatAddressSpaceMap {
extern class FlatAddressSpaceMap {
private:
/**
* @brief Represents a block of memory in the AS
* @brief Represents a block of memory in the AS, the physical mapping is contiguous until another block with a different phys address is hit
*/
struct Block {
VaType virt{UnmappedVa}; //!< VA of the block
@ -70,15 +70,15 @@ namespace skyline {
FlatAddressSpaceMap() = default;
/**
* @brief Locked version of MapLocked
*/
void Map(VaType virt, PaType phys, VaType size, bool flag = {});
void Map(VaType virt, PaType phys, VaType size, bool flag = {}) {
std::scoped_lock lock(blockMutex);
MapLocked(virt, phys, size, flag);
}
/**
* @brief Locked version of UnmapLocked
*/
void Unmap(VaType virt, VaType size);
void Unmap(VaType virt, VaType size) {
std::scoped_lock lock(blockMutex);
UnmapLocked(virt, size);
}
};
/**

36
app/src/main/cpp/skyline/common/address_space.inc
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@ -23,11 +23,11 @@ namespace skyline {
VaType virtEnd{virt + size};
if (virtEnd > vaLimit)
throw exception("Trying to map a block past the VA limit!");
throw exception("Trying to map a block past the VA limit: virtEnd: 0x{:X}, vaLimit: 0x{:X}", virtEnd, vaLimit);
auto blockEndSuccessor{std::lower_bound(blocks.begin(), blocks.end(), virtEnd)};
if (blockEndSuccessor == blocks.begin())
throw exception("Trying to map a block before the VA start!");
throw exception("Trying to map a block before the VA start: virtEnd: 0x{:X}", virtEnd);
auto blockEndPredecessor{std::prev(blockEndSuccessor)};
@ -68,11 +68,11 @@ namespace skyline {
// Walk the block vector to find the start successor as this is more efficient than another binary search in most scenarios
while (std::prev(blockStartSuccessor)->virt >= virt)
std::advance(blockStartSuccessor, -1);
blockStartSuccessor--;
// Check that the start successor is either the end block or something in between
if (blockStartSuccessor->virt > virtEnd) {
throw exception("Unsorted block in AS map!");
throw exception("Unsorted block in AS map: virt: 0x{:X}", blockStartSuccessor->virt);
} else if (blockStartSuccessor->virt == virtEnd) {
// We need to create a new block as there are none spare that we would overwrite
blocks.insert(blockStartSuccessor, Block(virt, phys, flag));
@ -99,17 +99,17 @@ namespace skyline {
VaType virtEnd{virt + size};
if (virtEnd > vaLimit)
throw exception("Trying to unmap a block past the VA limit!");
throw exception("Trying to map a block past the VA limit: virtEnd: 0x{:X}, vaLimit: 0x{:X}", virtEnd, vaLimit);
auto blockEndSuccessor{std::lower_bound(blocks.begin(), blocks.end(), virtEnd)};
if (blockEndSuccessor == blocks.begin())
throw exception("Trying to unmap a block before the VA start!");
throw exception("Trying to unmap a block before the VA start: virtEnd: 0x{:X}", virtEnd);
auto blockEndPredecessor{std::prev(blockEndSuccessor)};
auto walkBackToPredecessor{[&](auto iter) {
while (iter->virt >= virt)
std::advance(iter, -1);
iter--;
return iter;
}};
@ -174,7 +174,7 @@ namespace skyline {
auto blockStartSuccessor{std::next(blockStartPredecessor)};
if (blockStartSuccessor->virt > virtEnd) {
throw exception("Unsorted block in AS map!");
throw exception("Unsorted block in AS map: virt: 0x{:X}", blockStartSuccessor->virt);
} else if (blockStartSuccessor->virt == virtEnd) {
// There are no blocks between the start and the end that would let us skip inserting a new one for head
@ -192,23 +192,13 @@ namespace skyline {
// Erase overwritten blocks, skipping the first one as we have written the unmapped start block there
if (auto eraseStart{std::next(blockStartSuccessor)}; blockStartSuccessor != blockEndPredecessor) {
if (eraseStart == blockEndPredecessor)
throw exception("Unexpected Memory Manager state!");
throw exception("Trying to erase the end block of a newly unmapped region!");
blocks.erase(eraseStart, blockEndPredecessor);
}
}
}
MAP_MEMBER(void)::Map(VaType virt, PaType phys, VaType size, bool flag) {
std::scoped_lock lock(blockMutex);
MapLocked(virt, phys, size, flag);
}
MAP_MEMBER(void)::Unmap(VaType virt, VaType size) {
std::scoped_lock lock(blockMutex);
UnmapLocked(virt, size);
}
MM_MEMBER(void)::Read(u8 *destination, VaType virt, VaType size) {
std::scoped_lock lock(this->blockMutex);
@ -231,7 +221,7 @@ namespace skyline {
if (predecessor->flag) // Sparse mapping
std::memset(destination, 0, blockReadSize);
else
throw exception("Page fault at: 0x{:X}", predecessor->virt);
throw exception("Page fault at 0x{:X}", predecessor->virt);
} else {
std::memcpy(destination, blockPhys, blockReadSize);
}
@ -267,7 +257,7 @@ namespace skyline {
while (size) {
if (predecessor->phys == nullptr) {
if (!predecessor->flag) // Sparse mappings allow unmapped writes
throw exception("Page fault at: 0x{:X}", predecessor->virt);
throw exception("Page fault at 0x{:X}", predecessor->virt);
} else {
std::memcpy(blockPhys, source, blockWriteSize);
}
@ -350,10 +340,10 @@ namespace skyline {
}
ALLOC_MEMBER(void)::AllocateFixed(VaType virt, VaType size) {
this->MapLocked(virt, true, size);
this->Map(virt, true, size);
}
ALLOC_MEMBER(void)::Free(VaType virt, VaType size) {
this->UnmapLocked(virt, size);
this->Unmap(virt, size);
}
}

2
app/src/main/cpp/skyline/common/signal.cpp
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@ -183,6 +183,8 @@ namespace skyline::signal {
std::call_once(signalHandlerOnce[signal], [signal, &action]() {
struct sigaction oldAction;
Sigaction(signal, &action, &oldAction);
if (oldAction.sa_flags && oldAction.sa_flags != action.sa_flags)
throw exception("Old sigaction flags aren't equivalent to the replaced signal: {:#b} | {:#b}", oldAction.sa_flags, action.sa_flags);
DefaultSignalHandlers.at(signal).function = (oldAction.sa_flags & SA_SIGINFO) ? oldAction.sa_sigaction : reinterpret_cast<void (*)(int, struct siginfo *, void *)>(oldAction.sa_handler);
});

1
app/src/main/cpp/skyline/services/common/result.h
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@ -16,7 +16,6 @@ namespace skyline::service {
FunctionNotImplemented = 38, // ENOSYS
NotSupported = 95, // EOPNOTSUPP, ENOTSUP
TimedOut = 110, // ETIMEDOUT
};
template<typename ValueType>

7
app/src/main/cpp/skyline/services/nvdrv/INvDrvServices.cpp
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@ -1,6 +1,7 @@
// SPDX-License-Identifier: MIT OR MPL-2.0
// Copyright © 2020 Skyline Team and Contributors (https://github.com/skyline-emu/)
#include <numeric>
#include <kernel/types/KProcess.h>
#include "INvDrvServices.h"
#include "driver.h"
@ -18,7 +19,7 @@ namespace skyline::service::nvdrv {
INvDrvServices::INvDrvServices(const DeviceState &state, ServiceManager &manager, Driver &driver, const SessionPermissions &perms) : BaseService(state, manager), driver(driver), ctx(SessionContext{.perms = perms}) {}
Result INvDrvServices::Open(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
constexpr FileDescriptor SessionFdLimit{sizeof(u64) * 2 * 8}; //!< Nvdrv uses two 64 bit variables to store a bitset
constexpr FileDescriptor SessionFdLimit{std::numeric_limits<u64>::digits * 2}; //!< Nvdrv uses two 64 bit variables to store a bitset
auto path{request.inputBuf.at(0).as_string(true)};
if (path.empty() || nextFdIndex == SessionFdLimit) {
@ -100,7 +101,7 @@ namespace skyline::service::nvdrv {
auto fd{request.Pop<FileDescriptor>()};
auto ioctl{request.Pop<IoctlDescriptor>()};
// The inline buffer is technically not required
// Inline buffer is optional
auto inlineBuf{request.inputBuf.size() > 1 ? request.inputBuf.at(1) : span<u8>{}};
auto buf{GetMainIoctlBuffer(ioctl, request.inputBuf.at(0), request.outputBuf.at(0))};
@ -114,7 +115,7 @@ namespace skyline::service::nvdrv {
auto fd{request.Pop<FileDescriptor>()};
auto ioctl{request.Pop<IoctlDescriptor>()};
// The inline buffer is technically not required
// Inline buffer is optional
auto inlineBuf{request.outputBuf.size() > 1 ? request.outputBuf.at(1) : span<u8>{}};
auto buf{GetMainIoctlBuffer(ioctl, request.inputBuf.at(0), request.outputBuf.at(0))};

38
app/src/main/cpp/skyline/services/nvdrv/core/nvmap.cpp
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@ -21,7 +21,7 @@ namespace skyline::service::nvdrv::core {
if (pAddress)
flags.keepUncachedAfterFree = false;
else
throw exception("Mapping nvmap handles without a cpu side address is unimplemented!");
throw exception("Mapping nvmap handles without a CPU side address is unimplemented!");
size = util::AlignUp(size, PAGE_SIZE);
alignedSize = util::AlignUp(size, align);
@ -53,18 +53,18 @@ namespace skyline::service::nvdrv::core {
NvMap::NvMap(const DeviceState &state) : state(state) {}
void NvMap::AddHandle(std::shared_ptr<Handle> handle) {
void NvMap::AddHandle(std::shared_ptr<Handle> handleDesc) {
std::scoped_lock lock(handlesLock);
handles.emplace(handle->id, std::move(handle));
handles.emplace(handleDesc->id, std::move(handleDesc));
}
bool NvMap::TryRemoveHandle(const std::shared_ptr<Handle> &h) {
bool NvMap::TryRemoveHandle(const std::shared_ptr<Handle> &handleDesc) {
// No dupes left, we can remove from handle map
if (h->dupes == 0 && h->internalDupes == 0) {
if (handleDesc->dupes == 0 && handleDesc->internalDupes == 0) {
std::scoped_lock lock(handlesLock);
auto it{handles.find(h->id)};
auto it{handles.find(handleDesc->id)};
if (it != handles.end())
handles.erase(it);
@ -79,10 +79,10 @@ namespace skyline::service::nvdrv::core {
return PosixResult::InvalidArgument;
u32 id{nextHandleId.fetch_add(HandleIdIncrement, std::memory_order_relaxed)};
auto h{std::make_shared<Handle>(size, id)};
AddHandle(h);
auto handleDesc{std::make_shared<Handle>(size, id)};
AddHandle(handleDesc);
return h;
return handleDesc;
}
std::shared_ptr<NvMap::Handle> NvMap::GetHandle(Handle::Id handle) {
@ -100,34 +100,34 @@ namespace skyline::service::nvdrv::core {
FreeInfo freeInfo;
// We use a weak ptr here so we can tell when the handle has been freed and report that back to guest
if (auto h = hWeak.lock()) {
if (!h) [[unlikely]]
if (auto handleDesc = hWeak.lock()) {
if (!handleDesc) [[unlikely]]
return std::nullopt;
std::scoped_lock lock(h->mutex);
std::scoped_lock lock(handleDesc->mutex);
if (internalSession) {
if (--h->internalDupes < 0)
if (--handleDesc->internalDupes < 0)
state.logger->Warn("Internal duplicate count inbalance detected!");
} else {
if (--h->dupes < 0) {
if (--handleDesc->dupes < 0) {
state.logger->Warn("User duplicate count inbalance detected!");
} else if (h->dupes == 0) {
} else if (handleDesc->dupes == 0) {
// TODO: unpin
}
}
// Try to remove the shared ptr to the handle from the map, if nothing else is using the handle
// then it will now be freed when `h` goes out of scope
if (TryRemoveHandle(h))
if (TryRemoveHandle(handleDesc))
state.logger->Debug("Removed nvmap handle: {}", handle);
else
state.logger->Debug("Tried to free nvmap handle: {} but didn't as it still has duplicates", handle);
freeInfo = {
.address = h->address,
.size = h->size,
.wasUncached = h->flags.mapUncached,
.address = handleDesc->address,
.size = handleDesc->size,
.wasUncached = handleDesc->flags.mapUncached,
};
} else {
return std::nullopt;

6
app/src/main/cpp/skyline/services/nvdrv/core/nvmap.h
View File

@ -89,8 +89,6 @@ namespace skyline::service::nvdrv::core {
bool TryRemoveHandle(const std::shared_ptr<Handle> &h);
public:
NvMap(const DeviceState &state);
/**
* @brief Encapsulates the result of a FreeHandle operation
*/
@ -100,6 +98,8 @@ namespace skyline::service::nvdrv::core {
bool wasUncached; //!< If the handle was allocated as uncached
};
NvMap(const DeviceState &state);
/**
* @brief Creates an unallocated handle of the given size
*/
@ -109,7 +109,7 @@ namespace skyline::service::nvdrv::core {
/**
* @brief Tries to free a handle and remove a single dupe
* If a handle has no dupes left and has no other users a FreeInfo struct will be returned describing the prior state of the handle.
* @note If a handle has no dupes left and has no other users a FreeInfo struct will be returned describing the prior state of the handle
*/
std::optional<FreeInfo> FreeHandle(Handle::Id handle, bool internalSession);
};

2
app/src/main/cpp/skyline/services/nvdrv/core/syncpoint_manager.h
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@ -73,7 +73,7 @@ namespace skyline::service::nvdrv::core {
u32 UpdateMin(u32 id);
/**
* @return A fence that will be signalled once this syncpoint hits it's maximum value
* @return A fence that will be signalled once this syncpoint hits its maximum value
*/
Fence GetSyncpointFence(u32 id);
};

5
app/src/main/cpp/skyline/services/nvdrv/devices/nvhost/as_gpu.cpp
View File

@ -99,7 +99,7 @@ namespace skyline::service::nvdrv::device::nvhost {
return PosixResult::InvalidArgument;
for (const auto &mapping : allocation.mappings)
FreeMapping(mapping->offset);
FreeMappingLocked(mapping->offset);
// Unset sparse flag if required
if (allocation.sparse)
@ -151,7 +151,8 @@ namespace skyline::service::nvdrv::device::nvhost {
}
PosixResult AsGpu::MapBufferEx(In<MappingFlags> flags, In<u32> kind, In<core::NvMap::Handle::Id> handle, In<u64> bufferOffset, In<u64> mappingSize, InOut<u64> offset) {
state.logger->Debug("flags: ( fixed: {}, remap: {} ), kind: {}, handle: {}, bufferOffset: 0x{:X}, mappingSize: 0x{:X}, offset: 0x{:X}", flags.fixed, flags.remap, kind, handle, bufferOffset, mappingSize, offset);
state.logger->Debug("flags: ( fixed: {}, remap: {} ), kind: {}, handle: {}, bufferOffset: 0x{:X}, mappingSize: 0x{:X}, offset: 0x{:X}",
flags.fixed, flags.remap, kind, handle, bufferOffset, mappingSize, offset);
std::scoped_lock lock(mutex);

5
app/src/main/cpp/skyline/services/nvdrv/devices/nvhost/ctrl.h
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@ -35,8 +35,7 @@ namespace skyline::service::nvdrv::device::nvhost {
private:
/**
* @brief Syncpoint Events are used to expose fences to the userspace, they can be waited on using an IOCTL
* or be converted into a native HOS KEvent object that can be waited on just like any other KEvent on the guest
* @brief Syncpoint Events are used to expose fences to the userspace, they can be waited on using an IOCTL or be converted into a native HOS KEvent object that can be waited on just like any other KEvent on the guest
*/
class SyncpointEvent {
private:
@ -81,7 +80,7 @@ namespace skyline::service::nvdrv::device::nvhost {
std::array<std::unique_ptr<SyncpointEvent>, SyncpointEventCount> syncpointEvents{};
/**
* @brief Finds a free syncpoint event for the given syncpoint id
* @brief Finds a free syncpoint event for the given syncpoint ID
* @note syncpointEventMutex MUST be locked when calling this
* @return The free event slot
*/

47
app/src/main/cpp/skyline/services/nvdrv/devices/nvmap.cpp
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@ -9,30 +9,29 @@ namespace skyline::service::nvdrv::device {
NvMap::NvMap(const DeviceState &state, Core &core, const SessionContext &ctx) : NvDevice(state, core, ctx) {}
PosixResult NvMap::Create(In<u32> size, Out<NvMapCore::Handle::Id> handle) {
auto h{core.nvMap.CreateHandle(util::AlignUp(size, PAGE_SIZE))};
if (h) {
(*h)->origSize = size; // Orig size is the unaligned size
handle = (*h)->id;
state.logger->Debug("handle: {}, size: 0x{:X}", (*h)->id, size);
auto handleDesc{core.nvMap.CreateHandle(util::AlignUp(size, PAGE_SIZE))};
if (handleDesc) {
(*handleDesc)->origSize = size; // Orig size is the unaligned size
handle = (*handleDesc)->id;
state.logger->Debug("handle: {}, size: 0x{:X}", (*handleDesc)->id, size);
}
return h;
return handleDesc;
}
PosixResult NvMap::FromId(In<NvMapCore::Handle::Id> id, Out<NvMapCore::Handle::Id> handle) {
state.logger->Debug("id: {}", id);
// Handles and IDs are always the same value in nvmap however IDs can be used globally given the right permissions.
// Since we don't plan on ever supporting multiprocess we can skip implementing handle refs and so this function
// just does simple validation and passes through the handle id.
// Since we don't plan on ever supporting multiprocess we can skip implementing handle refs and so this function just does simple validation and passes through the handle id.
if (!id) [[unlikely]]
return PosixResult::InvalidArgument;
auto h{core.nvMap.GetHandle(id)};
if (!h) [[unlikely]]
auto handleDesc{core.nvMap.GetHandle(id)};
if (!handleDesc) [[unlikely]]
return PosixResult::InvalidArgument;
return h->Duplicate(ctx.internalSession);
return handleDesc->Duplicate(ctx.internalSession);
}
PosixResult NvMap::Alloc(In<NvMapCore::Handle::Id> handle, In<u32> heapMask, In<NvMapCore::Handle::Flags> flags, InOut<u32> align, In<u8> kind, In<u64> address) {
@ -48,11 +47,11 @@ namespace skyline::service::nvdrv::device {
if (align < PAGE_SIZE) [[unlikely]]
align = PAGE_SIZE;
auto h{core.nvMap.GetHandle(handle)};
if (!h) [[unlikely]]
auto handleDesc{core.nvMap.GetHandle(handle)};
if (!handleDesc) [[unlikely]]
return PosixResult::InvalidArgument;
return h->Alloc(flags, align, kind, address);
return handleDesc->Alloc(flags, align, kind, address);
}
PosixResult NvMap::Free(In<NvMapCore::Handle::Id> handle, Out<u64> address, Out<u32> size, Out<NvMapCore::Handle::Flags> flags) {
@ -78,32 +77,32 @@ namespace skyline::service::nvdrv::device {
if (!handle)
return PosixResult::InvalidArgument;
auto h{core.nvMap.GetHandle(handle)};
if (!h) [[unlikely]]
auto handleDesc{core.nvMap.GetHandle(handle)};
if (!handleDesc) [[unlikely]]
return PosixResult::InvalidArgument;
switch (param) {
case HandleParameterType::Size:
result = h->origSize;
result = handleDesc->origSize;
return PosixResult::Success;
case HandleParameterType::Alignment:
result = h->align;
result = handleDesc->align;
return PosixResult::Success;
case HandleParameterType::Base:
result = -static_cast<i32>(PosixResult::InvalidArgument);
return PosixResult::Success;
case HandleParameterType::Heap:
if (h->allocated)
if (handleDesc->allocated)
result = 0x40000000;
else
result = 0;
return PosixResult::Success;
case HandleParameterType::Kind:
result = h->kind;
result = handleDesc->kind;
return PosixResult::Success;
case HandleParameterType::IsSharedMemMapped:
result = h->isSharedMemMapped;
result = handleDesc->isSharedMemMapped;
return PosixResult::Success;
default:
return PosixResult::InvalidArgument;
@ -117,11 +116,11 @@ namespace skyline::service::nvdrv::device {
if (!handle) [[unlikely]]
return PosixResult::InvalidArgument;
auto h{core.nvMap.GetHandle(handle)};
if (!h) [[unlikely]]
auto handleDesc{core.nvMap.GetHandle(handle)};
if (!handleDesc) [[unlikely]]
return PosixResult::NotPermitted; // This will always return EPERM irrespective of if the handle exists or not
id = h->id;
id = handleDesc->id;
return PosixResult::Success;
}

24
app/src/main/cpp/skyline/services/nvdrv/driver.cpp
View File

@ -39,31 +39,7 @@ namespace skyline::service::nvdrv {
DEVICE_CASE("/dev/nvhost-ctrl-gpu", nvhost::CtrlGpu)
DEVICE_CASE("/dev/nvhost-gpu", nvhost::GpuChannel)
);
}/*
if (ctx.perms.AccessVic) {
switch (pathHash) {
ENTRY("/dev/nvhost-vic", nvhost::Vic)
default:
break;
}
}
if (ctx.perms.AccessVideoDecoder) {
switch (pathHash) {
ENTRY("/dev/nvhost-nvdec", nvhost::NvDec)
default:
break;
}
}
if (ctx.perms.AccessJpeg) {
switch (pathHash) {
ENTRY("/dev/nvhost-nvjpg", nvhost::NvJpg)
default:
break;
}
}*/
#undef DEVICE_CASE
#undef DEVICE_SWITCH

6
app/src/main/cpp/skyline/services/nvdrv/types.h
View File

@ -9,9 +9,6 @@ namespace skyline::service::nvdrv {
using FileDescriptor = i32;
constexpr FileDescriptor InvalidFileDescriptor{-1};
/**
* @brief Holds the permissions for an nvdrv instance
*/
struct SessionPermissions {
bool AccessGpu;
bool AccessGpuDebug;
@ -29,9 +26,6 @@ namespace skyline::service::nvdrv {
bool ExportNvMapHandles;
};
/**
* @brief Holds the per-session context for nvdrv
*/
struct SessionContext {
SessionPermissions perms;
bool internalSession;