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k_page_table: add MapFirstGroup

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This commit is contained in:
Liam 2023-10-11 13:12:02 -04:00
parent b456af31e6
commit f21058a6c0
3 changed files with 48 additions and 33 deletions
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11
src/core/hle/kernel/k_page_group.h
View file

@ -183,12 +183,17 @@ private:
class KScopedPageGroup {
public:
explicit KScopedPageGroup(const KPageGroup* gp) : m_pg(gp) {
explicit KScopedPageGroup(const KPageGroup* gp, bool not_first = true) : m_pg(gp) {
if (m_pg) {
m_pg->Open();
if (not_first) {
m_pg->Open();
} else {
m_pg->OpenFirst();
}
}
}
explicit KScopedPageGroup(const KPageGroup& gp) : KScopedPageGroup(std::addressof(gp)) {}
explicit KScopedPageGroup(const KPageGroup& gp, bool not_first = true)
: KScopedPageGroup(std::addressof(gp), not_first) {}
~KScopedPageGroup() {
if (m_pg) {
m_pg->Close();

66
src/core/hle/kernel/k_page_table.cpp
View file

@ -1724,29 +1724,43 @@ Result KPageTable::MapPhysicalMemory(KProcessAddress address, size_t size) {
PageSize;
// While we have pages to map, map them.
while (map_pages > 0) {
// Check if we're at the end of the physical block.
if (pg_pages == 0) {
// Ensure there are more pages to map.
ASSERT(pg_it != pg.end());
{
// Create a page group for the current mapping range.
KPageGroup cur_pg(m_kernel, m_block_info_manager);
{
ON_RESULT_FAILURE_2 {
cur_pg.OpenFirst();
cur_pg.Close();
};
// Advance our physical block.
++pg_it;
pg_phys_addr = pg_it->GetAddress();
pg_pages = pg_it->GetNumPages();
size_t remain_pages = map_pages;
while (remain_pages > 0) {
// Check if we're at the end of the physical block.
if (pg_pages == 0) {
// Ensure there are more pages to map.
ASSERT(pg_it != pg.end());
// Advance our physical block.
++pg_it;
pg_phys_addr = pg_it->GetAddress();
pg_pages = pg_it->GetNumPages();
}
// Add whatever we can to the current block.
const size_t cur_pages = std::min(pg_pages, remain_pages);
R_TRY(cur_pg.AddBlock(pg_phys_addr +
((pg_pages - cur_pages) * PageSize),
cur_pages));
// Advance.
remain_pages -= cur_pages;
pg_pages -= cur_pages;
}
}
// Map whatever we can.
const size_t cur_pages = std::min(pg_pages, map_pages);
R_TRY(Operate(cur_address, cur_pages, KMemoryPermission::UserReadWrite,
OperationType::MapFirst, pg_phys_addr));
// Advance.
cur_address += cur_pages * PageSize;
map_pages -= cur_pages;
pg_phys_addr += cur_pages * PageSize;
pg_pages -= cur_pages;
// Map the pages.
R_TRY(this->Operate(cur_address, map_pages, cur_pg,
OperationType::MapFirstGroup));
}
}
@ -3037,9 +3051,10 @@ Result KPageTable::Operate(KProcessAddress addr, size_t num_pages, const KPageGr
ASSERT(num_pages == page_group.GetNumPages());
switch (operation) {
case OperationType::MapGroup: {
case OperationType::MapGroup:
case OperationType::MapFirstGroup: {
// We want to maintain a new reference to every page in the group.
KScopedPageGroup spg(page_group);
KScopedPageGroup spg(page_group, operation != OperationType::MapFirstGroup);
for (const auto& node : page_group) {
const size_t size{node.GetNumPages() * PageSize};
@ -3081,7 +3096,6 @@ Result KPageTable::Operate(KProcessAddress addr, size_t num_pages, KMemoryPermis
m_memory->UnmapRegion(*m_page_table_impl, addr, num_pages * PageSize);
break;
}
case OperationType::MapFirst:
case OperationType::Map: {
ASSERT(map_addr);
ASSERT(Common::IsAligned(GetInteger(map_addr), PageSize));
@ -3089,11 +3103,7 @@ Result KPageTable::Operate(KProcessAddress addr, size_t num_pages, KMemoryPermis
// Open references to pages, if we should.
if (IsHeapPhysicalAddress(m_kernel.MemoryLayout(), map_addr)) {
if (operation == OperationType::MapFirst) {
m_kernel.MemoryManager().OpenFirst(map_addr, num_pages);
} else {
m_kernel.MemoryManager().Open(map_addr, num_pages);
}
m_kernel.MemoryManager().Open(map_addr, num_pages);
}
break;
}

4
src/core/hle/kernel/k_page_table.h
View file

@ -217,8 +217,8 @@ protected:
private:
enum class OperationType : u32 {
Map = 0,
MapFirst = 1,
MapGroup = 2,
MapGroup = 1,
MapFirstGroup = 2,
Unmap = 3,
ChangePermissions = 4,
ChangePermissionsAndRefresh = 5,