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kern/svc: implement IoPool/Region svc support

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Michael Scire 2021-09-18 13:26:21 -07:00 • committed by SciresM
parent ce7dd55257
commit f6fb5f2c8d
24 changed files with 944 additions and 301 deletions
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115
libraries/libmesosphere/source/kern_k_page_table_base.cpp
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@ -163,23 +163,23 @@ namespace ams::kern {
heap_region_size = GetSpaceSize(KAddressSpaceInfo::Type_Heap);
stack_region_size = GetSpaceSize(KAddressSpaceInfo::Type_Stack);
kernel_map_region_size = GetSpaceSize(KAddressSpaceInfo::Type_MapSmall);
m_code_region_start = GetSpaceStart(KAddressSpaceInfo::Type_Map39Bit);
m_code_region_end = m_code_region_start + GetSpaceSize(KAddressSpaceInfo::Type_Map39Bit);
m_alias_code_region_start = m_code_region_start;
m_alias_code_region_end = m_code_region_end;
m_code_region_start = GetSpaceStart(KAddressSpaceInfo::Type_Map39Bit);
m_code_region_end = m_code_region_start + GetSpaceSize(KAddressSpaceInfo::Type_Map39Bit);
m_alias_code_region_start = m_code_region_start;
m_alias_code_region_end = m_code_region_end;
process_code_start = util::AlignDown(GetInteger(code_address), RegionAlignment);
process_code_end = util::AlignUp(GetInteger(code_address) + code_size, RegionAlignment);
} else {
stack_region_size = 0;
kernel_map_region_size = 0;
m_code_region_start = GetSpaceStart(KAddressSpaceInfo::Type_MapSmall);
m_code_region_end = m_code_region_start + GetSpaceSize(KAddressSpaceInfo::Type_MapSmall);
m_stack_region_start = m_code_region_start;
m_alias_code_region_start = m_code_region_start;
m_alias_code_region_end = GetSpaceStart(KAddressSpaceInfo::Type_MapLarge) + GetSpaceSize(KAddressSpaceInfo::Type_MapLarge);
m_stack_region_end = m_code_region_end;
m_kernel_map_region_start = m_code_region_start;
m_kernel_map_region_end = m_code_region_end;
m_code_region_start = GetSpaceStart(KAddressSpaceInfo::Type_MapSmall);
m_code_region_end = m_code_region_start + GetSpaceSize(KAddressSpaceInfo::Type_MapSmall);
m_stack_region_start = m_code_region_start;
m_alias_code_region_start = m_code_region_start;
m_alias_code_region_end = GetSpaceStart(KAddressSpaceInfo::Type_MapLarge) + GetSpaceSize(KAddressSpaceInfo::Type_MapLarge);
m_stack_region_end = m_code_region_end;
m_kernel_map_region_start = m_code_region_start;
m_kernel_map_region_end = m_code_region_end;
process_code_start = m_code_region_start;
process_code_end = m_code_region_end;
}
@ -368,10 +368,10 @@ namespace ams::kern {
return m_alias_region_start;
case KMemoryState_Stack:
return m_stack_region_start;
case KMemoryState_Io:
case KMemoryState_Static:
case KMemoryState_ThreadLocal:
return m_kernel_map_region_start;
case KMemoryState_Io:
case KMemoryState_Shared:
case KMemoryState_AliasCode:
case KMemoryState_AliasCodeData:
@ -402,10 +402,10 @@ namespace ams::kern {
return m_alias_region_end - m_alias_region_start;
case KMemoryState_Stack:
return m_stack_region_end - m_stack_region_start;
case KMemoryState_Io:
case KMemoryState_Static:
case KMemoryState_ThreadLocal:
return m_kernel_map_region_end - m_kernel_map_region_start;
case KMemoryState_Io:
case KMemoryState_Shared:
case KMemoryState_AliasCode:
case KMemoryState_AliasCodeData:
@ -1823,10 +1823,12 @@ namespace ams::kern {
const KPhysicalAddress last = phys_addr + size - 1;
/* Get region extents. */
const KProcessAddress region_start = this->GetRegionAddress(KMemoryState_Io);
const size_t region_size = this->GetRegionSize(KMemoryState_Io);
const KProcessAddress region_start = m_kernel_map_region_start;
const size_t region_size = m_kernel_map_region_end - m_kernel_map_region_start;
const size_t region_num_pages = region_size / PageSize;
MESOSPHERE_ASSERT(this->CanContain(region_start, region_size, KMemoryState_Io));
/* Locate the memory region. */
const KMemoryRegion *region = KMemoryLayout::Find(phys_addr);
R_UNLESS(region != nullptr, svc::ResultInvalidAddress());
@ -1906,6 +1908,87 @@ namespace ams::kern {
return ResultSuccess();
}
Result KPageTableBase::MapIoRegion(KProcessAddress dst_address, KPhysicalAddress phys_addr, size_t size, ams::svc::MemoryMapping mapping, ams::svc::MemoryPermission svc_perm) {
const size_t num_pages = size / PageSize;
/* Lock the table. */
KScopedLightLock lk(m_general_lock);
/* Validate the memory state. */
size_t num_allocator_blocks;
R_TRY(this->CheckMemoryState(std::addressof(num_allocator_blocks), dst_address, size, KMemoryState_All, KMemoryState_None, KMemoryPermission_None, KMemoryPermission_None, KMemoryAttribute_None, KMemoryAttribute_None));
/* Create an update allocator. */
Result allocator_result;
KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result), m_memory_block_slab_manager, num_allocator_blocks);
R_TRY(allocator_result);
/* We're going to perform an update, so create a helper. */
KScopedPageTableUpdater updater(this);
/* Perform mapping operation. */
const KMemoryPermission perm = ConvertToKMemoryPermission(svc_perm);
const KPageProperties properties = { perm, mapping == ams::svc::MemoryMapping_IoRegister, mapping == ams::svc::MemoryMapping_Uncached, DisableMergeAttribute_DisableHead };
R_TRY(this->Operate(updater.GetPageList(), dst_address, num_pages, phys_addr, true, properties, OperationType_Map, false));
/* Update the blocks. */
m_memory_block_manager.Update(std::addressof(allocator), dst_address, num_pages, KMemoryState_Io, perm, KMemoryAttribute_None, KMemoryBlockDisableMergeAttribute_Normal, KMemoryBlockDisableMergeAttribute_None);
/* We successfully mapped the pages. */
return ResultSuccess();
}
Result KPageTableBase::UnmapIoRegion(KProcessAddress dst_address, KPhysicalAddress phys_addr, size_t size) {
const size_t num_pages = size / PageSize;
/* Lock the table. */
KScopedLightLock lk(m_general_lock);
/* Validate the memory state. */
size_t num_allocator_blocks;
R_TRY(this->CheckMemoryState(std::addressof(num_allocator_blocks), dst_address, size, KMemoryState_All, KMemoryState_Io, KMemoryPermission_None, KMemoryPermission_None, KMemoryAttribute_All, KMemoryAttribute_None));
/* Validate that the region being unmapped corresponds to the physical range described. */
{
/* Get the impl. */
auto &impl = this->GetImpl();
/* Begin traversal. */
TraversalContext context;
TraversalEntry next_entry;
MESOSPHERE_ABORT_UNLESS(impl.BeginTraversal(std::addressof(next_entry), std::addressof(context), dst_address));
/* Check that the physical region matches. */
R_UNLESS(next_entry.phys_addr == phys_addr, svc::ResultInvalidMemoryRegion());
/* Iterate. */
for (size_t checked_size = next_entry.block_size - (GetInteger(phys_addr) & (next_entry.block_size - 1)); checked_size < size; checked_size += next_entry.block_size) {
/* Continue the traversal. */
MESOSPHERE_ABORT_UNLESS(impl.ContinueTraversal(std::addressof(next_entry), std::addressof(context)));
/* Check that the physical region matches. */
R_UNLESS(next_entry.phys_addr == phys_addr + checked_size, svc::ResultInvalidMemoryRegion());
}
}
/* Create an update allocator. */
Result allocator_result;
KMemoryBlockManagerUpdateAllocator allocator(std::addressof(allocator_result), m_memory_block_slab_manager, num_allocator_blocks);
R_TRY(allocator_result);
/* We're going to perform an update, so create a helper. */
KScopedPageTableUpdater updater(this);
/* Perform the unmap. */
const KPageProperties unmap_properties = { KMemoryPermission_None, false, false, DisableMergeAttribute_None };
R_TRY(this->Operate(updater.GetPageList(), dst_address, num_pages, Null<KPhysicalAddress>, false, unmap_properties, OperationType_Unmap, false));
/* Update the blocks. */
m_memory_block_manager.Update(std::addressof(allocator), dst_address, num_pages, KMemoryState_Free, KMemoryPermission_None, KMemoryAttribute_None, KMemoryBlockDisableMergeAttribute_None, KMemoryBlockDisableMergeAttribute_Normal);
return ResultSuccess();
}
Result KPageTableBase::MapStatic(KPhysicalAddress phys_addr, size_t size, KMemoryPermission perm) {
MESOSPHERE_ASSERT(util::IsAligned(GetInteger(phys_addr), PageSize));
MESOSPHERE_ASSERT(util::IsAligned(size, PageSize));