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-rw-r--r--src/core/hle/kernel/memory/memory_block.h23
-rw-r--r--src/core/hle/kernel/memory/memory_block_manager.cpp36
-rw-r--r--src/core/hle/kernel/memory/memory_block_manager.h3
-rw-r--r--src/core/hle/kernel/memory/page_table.cpp44
-rw-r--r--src/core/hle/kernel/memory/page_table.h2
5 files changed, 105 insertions, 3 deletions
diff --git a/src/core/hle/kernel/memory/memory_block.h b/src/core/hle/kernel/memory/memory_block.h
index e11043b60..9db1f7b39 100644
--- a/src/core/hle/kernel/memory/memory_block.h
+++ b/src/core/hle/kernel/memory/memory_block.h
@@ -17,7 +17,7 @@ namespace Kernel::Memory {
enum class MemoryState : u32 {
None = 0,
- Mask = 0xFFFFFFFF, // TODO(bunnei): This should probable be 0xFF
+ Mask = 0xFF,
All = ~None,
FlagCanReprotect = (1 << 8),
@@ -253,6 +253,23 @@ public:
};
}
+ void ShareToDevice(MemoryPermission /*new_perm*/) {
+ ASSERT((attribute & MemoryAttribute::DeviceShared) == MemoryAttribute::DeviceShared ||
+ device_use_count == 0);
+ attribute |= MemoryAttribute::DeviceShared;
+ const u16 new_use_count{++device_use_count};
+ ASSERT(new_use_count > 0);
+ }
+
+ void UnshareToDevice(MemoryPermission /*new_perm*/) {
+ ASSERT((attribute & MemoryAttribute::DeviceShared) == MemoryAttribute::DeviceShared);
+ const u16 prev_use_count{device_use_count--};
+ ASSERT(prev_use_count > 0);
+ if (prev_use_count == 1) {
+ attribute &= ~MemoryAttribute::DeviceShared;
+ }
+ }
+
private:
constexpr bool HasProperties(MemoryState s, MemoryPermission p, MemoryAttribute a) const {
constexpr MemoryAttribute AttributeIgnoreMask{MemoryAttribute::DontCareMask |
@@ -287,9 +304,9 @@ private:
state = new_state;
perm = new_perm;
- // TODO(bunnei): Is this right?
attribute = static_cast<MemoryAttribute>(
- new_attribute /*| (attribute & (MemoryAttribute::IpcLocked | MemoryAttribute::DeviceShared))*/);
+ new_attribute |
+ (attribute & (MemoryAttribute::IpcLocked | MemoryAttribute::DeviceShared)));
}
constexpr MemoryBlock Split(VAddr split_addr) {
diff --git a/src/core/hle/kernel/memory/memory_block_manager.cpp b/src/core/hle/kernel/memory/memory_block_manager.cpp
index 1ebc126c0..900395c37 100644
--- a/src/core/hle/kernel/memory/memory_block_manager.cpp
+++ b/src/core/hle/kernel/memory/memory_block_manager.cpp
@@ -143,6 +143,42 @@ void MemoryBlockManager::Update(VAddr addr, std::size_t num_pages, MemoryState s
}
}
+void MemoryBlockManager::UpdateLock(VAddr addr, std::size_t num_pages, LockFunc&& lock_func,
+ MemoryPermission perm) {
+ const std::size_t prev_count{memory_block_tree.size()};
+ const VAddr end_addr{addr + num_pages * PageSize};
+ iterator node{memory_block_tree.begin()};
+
+ while (node != memory_block_tree.end()) {
+ MemoryBlock* block{&(*node)};
+ iterator next_node{std::next(node)};
+ const VAddr cur_addr{block->GetAddress()};
+ const VAddr cur_end_addr{block->GetNumPages() * PageSize + cur_addr};
+
+ if (addr < cur_end_addr && cur_addr < end_addr) {
+ iterator new_node{node};
+
+ if (addr > cur_addr) {
+ memory_block_tree.insert(node, block->Split(addr));
+ }
+
+ if (end_addr < cur_end_addr) {
+ new_node = memory_block_tree.insert(node, block->Split(end_addr));
+ }
+
+ lock_func(new_node, perm);
+
+ MergeAdjacent(new_node, next_node);
+ }
+
+ if (cur_end_addr - 1 >= end_addr - 1) {
+ break;
+ }
+
+ node = next_node;
+ }
+}
+
void MemoryBlockManager::IterateForRange(VAddr start, VAddr end, IterateFunc&& func) {
const_iterator it{FindIterator(start)};
MemoryInfo info{};
diff --git a/src/core/hle/kernel/memory/memory_block_manager.h b/src/core/hle/kernel/memory/memory_block_manager.h
index 0f2270f0f..9451b5df6 100644
--- a/src/core/hle/kernel/memory/memory_block_manager.h
+++ b/src/core/hle/kernel/memory/memory_block_manager.h
@@ -45,6 +45,9 @@ public:
MemoryPermission perm = MemoryPermission::None,
MemoryAttribute attribute = MemoryAttribute::None);
+ using LockFunc = std::function<void(iterator, MemoryPermission)>;
+ void UpdateLock(VAddr addr, std::size_t num_pages, LockFunc&& lock_func, MemoryPermission perm);
+
using IterateFunc = std::function<void(const MemoryInfo&)>;
void IterateForRange(VAddr start, VAddr end, IterateFunc&& func);
diff --git a/src/core/hle/kernel/memory/page_table.cpp b/src/core/hle/kernel/memory/page_table.cpp
index 091e52ca4..2c9925f33 100644
--- a/src/core/hle/kernel/memory/page_table.cpp
+++ b/src/core/hle/kernel/memory/page_table.cpp
@@ -840,6 +840,50 @@ ResultVal<VAddr> PageTable::AllocateAndMapMemory(std::size_t needed_num_pages, s
return MakeResult<VAddr>(addr);
}
+ResultCode PageTable::LockForDeviceAddressSpace(VAddr addr, std::size_t size) {
+ std::lock_guard lock{page_table_lock};
+
+ MemoryPermission perm{};
+ if (const ResultCode result{CheckMemoryState(
+ nullptr, &perm, nullptr, addr, size, MemoryState::FlagCanChangeAttribute,
+ MemoryState::FlagCanChangeAttribute, MemoryPermission::None, MemoryPermission::None,
+ MemoryAttribute::LockedAndIpcLocked, MemoryAttribute::None,
+ MemoryAttribute::DeviceSharedAndUncached)};
+ result.IsError()) {
+ return result;
+ }
+
+ block_manager->UpdateLock(addr, size / PageSize,
+ [perm](MemoryBlockManager::iterator block, MemoryPermission perm) {
+ block->ShareToDevice(perm);
+ },
+ perm);
+
+ return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::UnlockForDeviceAddressSpace(VAddr addr, std::size_t size) {
+ std::lock_guard lock{page_table_lock};
+
+ MemoryPermission perm{};
+ if (const ResultCode result{CheckMemoryState(
+ nullptr, &perm, nullptr, addr, size, MemoryState::FlagCanChangeAttribute,
+ MemoryState::FlagCanChangeAttribute, MemoryPermission::None, MemoryPermission::None,
+ MemoryAttribute::LockedAndIpcLocked, MemoryAttribute::None,
+ MemoryAttribute::DeviceSharedAndUncached)};
+ result.IsError()) {
+ return result;
+ }
+
+ block_manager->UpdateLock(addr, size / PageSize,
+ [perm](MemoryBlockManager::iterator block, MemoryPermission perm) {
+ block->UnshareToDevice(perm);
+ },
+ perm);
+
+ return RESULT_SUCCESS;
+}
+
ResultCode PageTable::InitializeMemoryLayout(VAddr start, VAddr end) {
block_manager = std::make_unique<MemoryBlockManager>(start, end);
diff --git a/src/core/hle/kernel/memory/page_table.h b/src/core/hle/kernel/memory/page_table.h
index 80384ab0f..a867aa050 100644
--- a/src/core/hle/kernel/memory/page_table.h
+++ b/src/core/hle/kernel/memory/page_table.h
@@ -53,6 +53,8 @@ public:
bool is_map_only, VAddr region_start,
std::size_t region_num_pages, MemoryState state,
MemoryPermission perm, PAddr map_addr = 0);
+ ResultCode LockForDeviceAddressSpace(VAddr addr, std::size_t size);
+ ResultCode UnlockForDeviceAddressSpace(VAddr addr, std::size_t size);
Common::PageTable& PageTableImpl() {
return page_table_impl;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 05:29:38 +0100