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// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "core/hle/kernel/k_page_buffer.h"
#include "core/hle/kernel/k_session_request.h"
namespace Kernel {
Result KSessionRequest::SessionMappings::PushMap(VAddr client, VAddr server, size_t size,
KMemoryState state, size_t index) {
// At most 15 buffers of each type (4-bit descriptor counts).
ASSERT(index < ((1ul << 4) - 1) * 3);
// Get the mapping.
Mapping* mapping;
if (index < NumStaticMappings) {
mapping = std::addressof(m_static_mappings[index]);
} else {
// Allocate a page for the extra mappings.
if (m_mappings == nullptr) {
KPageBuffer* page_buffer = KPageBuffer::Allocate(m_kernel);
R_UNLESS(page_buffer != nullptr, ResultOutOfMemory);
m_mappings = reinterpret_cast<Mapping*>(page_buffer);
}
mapping = std::addressof(m_mappings[index - NumStaticMappings]);
}
// Set the mapping.
mapping->Set(client, server, size, state);
R_SUCCEED();
}
Result KSessionRequest::SessionMappings::PushSend(VAddr client, VAddr server, size_t size,
KMemoryState state) {
ASSERT(m_num_recv == 0);
ASSERT(m_num_exch == 0);
R_RETURN(this->PushMap(client, server, size, state, m_num_send++));
}
Result KSessionRequest::SessionMappings::PushReceive(VAddr client, VAddr server, size_t size,
KMemoryState state) {
ASSERT(m_num_exch == 0);
R_RETURN(this->PushMap(client, server, size, state, m_num_send + m_num_recv++));
}
Result KSessionRequest::SessionMappings::PushExchange(VAddr client, VAddr server, size_t size,
KMemoryState state) {
R_RETURN(this->PushMap(client, server, size, state, m_num_send + m_num_recv + m_num_exch++));
}
void KSessionRequest::SessionMappings::Finalize() {
if (m_mappings) {
KPageBuffer::Free(m_kernel, reinterpret_cast<KPageBuffer*>(m_mappings));
m_mappings = nullptr;
}
}
} // namespace Kernel
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