kernel: add KSessionRequest
Liam
parent
5ffb8b8039
commit
3efb8eb2dc
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// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "core/hle/kernel/k_page_buffer.h"
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#include "core/hle/kernel/k_session_request.h"
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namespace Kernel {
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Result KSessionRequest::SessionMappings::PushMap(VAddr client, VAddr server, size_t size,
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KMemoryState state, size_t index) {
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// At most 15 buffers of each type (4-bit descriptor counts).
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ASSERT(index < ((1ul << 4) - 1) * 3);
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// Get the mapping.
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Mapping* mapping;
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if (index < NumStaticMappings) {
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mapping = &m_static_mappings[index];
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} else {
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// Allocate a page for the extra mappings.
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if (m_mappings == nullptr) {
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KPageBuffer* page_buffer = KPageBuffer::Allocate(kernel);
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R_UNLESS(page_buffer != nullptr, ResultOutOfMemory);
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m_mappings = reinterpret_cast<Mapping*>(page_buffer);
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}
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mapping = &m_mappings[index - NumStaticMappings];
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}
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// Set the mapping.
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mapping->Set(client, server, size, state);
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return ResultSuccess;
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}
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Result KSessionRequest::SessionMappings::PushSend(VAddr client, VAddr server, size_t size,
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KMemoryState state) {
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ASSERT(m_num_recv == 0);
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ASSERT(m_num_exch == 0);
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return this->PushMap(client, server, size, state, m_num_send++);
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}
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Result KSessionRequest::SessionMappings::PushReceive(VAddr client, VAddr server, size_t size,
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KMemoryState state) {
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ASSERT(m_num_exch == 0);
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return this->PushMap(client, server, size, state, m_num_send + m_num_recv++);
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}
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Result KSessionRequest::SessionMappings::PushExchange(VAddr client, VAddr server, size_t size,
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KMemoryState state) {
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return this->PushMap(client, server, size, state, m_num_send + m_num_recv + m_num_exch++);
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}
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void KSessionRequest::SessionMappings::Finalize() {
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if (m_mappings) {
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KPageBuffer::Free(kernel, reinterpret_cast<KPageBuffer*>(m_mappings));
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m_mappings = nullptr;
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}
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}
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} // namespace Kernel
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@ -0,0 +1,307 @@
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// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include "core/hle/kernel/k_auto_object.h"
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#include "core/hle/kernel/k_event.h"
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#include "core/hle/kernel/k_memory_block.h"
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#include "core/hle/kernel/k_process.h"
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#include "core/hle/kernel/k_thread.h"
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#include "core/hle/kernel/slab_helpers.h"
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namespace Kernel {
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class KSessionRequest final : public KSlabAllocated<KSessionRequest>,
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public KAutoObject,
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public boost::intrusive::list_base_hook<> {
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KERNEL_AUTOOBJECT_TRAITS(KSessionRequest, KAutoObject);
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public:
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class SessionMappings {
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private:
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static constexpr size_t NumStaticMappings = 8;
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class Mapping {
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public:
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constexpr void Set(VAddr c, VAddr s, size_t sz, KMemoryState st) {
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m_client_address = c;
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m_server_address = s;
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m_size = sz;
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m_state = st;
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}
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constexpr VAddr GetClientAddress() const {
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return m_client_address;
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}
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constexpr VAddr GetServerAddress() const {
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return m_server_address;
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}
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constexpr size_t GetSize() const {
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return m_size;
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}
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constexpr KMemoryState GetMemoryState() const {
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return m_state;
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}
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private:
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VAddr m_client_address;
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VAddr m_server_address;
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size_t m_size;
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KMemoryState m_state;
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};
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public:
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explicit SessionMappings(KernelCore& kernel_)
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: kernel(kernel_), m_mappings(nullptr), m_num_send(), m_num_recv(), m_num_exch() {}
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void Initialize() {}
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void Finalize();
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size_t GetSendCount() const {
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return m_num_send;
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}
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size_t GetReceiveCount() const {
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return m_num_recv;
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}
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size_t GetExchangeCount() const {
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return m_num_exch;
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}
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Result PushSend(VAddr client, VAddr server, size_t size, KMemoryState state);
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Result PushReceive(VAddr client, VAddr server, size_t size, KMemoryState state);
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Result PushExchange(VAddr client, VAddr server, size_t size, KMemoryState state);
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VAddr GetSendClientAddress(size_t i) const {
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return GetSendMapping(i).GetClientAddress();
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}
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VAddr GetSendServerAddress(size_t i) const {
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return GetSendMapping(i).GetServerAddress();
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}
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size_t GetSendSize(size_t i) const {
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return GetSendMapping(i).GetSize();
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}
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KMemoryState GetSendMemoryState(size_t i) const {
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return GetSendMapping(i).GetMemoryState();
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}
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VAddr GetReceiveClientAddress(size_t i) const {
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return GetReceiveMapping(i).GetClientAddress();
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}
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VAddr GetReceiveServerAddress(size_t i) const {
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return GetReceiveMapping(i).GetServerAddress();
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}
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size_t GetReceiveSize(size_t i) const {
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return GetReceiveMapping(i).GetSize();
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}
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KMemoryState GetReceiveMemoryState(size_t i) const {
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return GetReceiveMapping(i).GetMemoryState();
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}
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VAddr GetExchangeClientAddress(size_t i) const {
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return GetExchangeMapping(i).GetClientAddress();
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}
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VAddr GetExchangeServerAddress(size_t i) const {
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return GetExchangeMapping(i).GetServerAddress();
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}
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size_t GetExchangeSize(size_t i) const {
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return GetExchangeMapping(i).GetSize();
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}
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KMemoryState GetExchangeMemoryState(size_t i) const {
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return GetExchangeMapping(i).GetMemoryState();
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}
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private:
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Result PushMap(VAddr client, VAddr server, size_t size, KMemoryState state, size_t index);
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const Mapping& GetSendMapping(size_t i) const {
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ASSERT(i < m_num_send);
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const size_t index = i;
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if (index < NumStaticMappings) {
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return m_static_mappings[index];
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} else {
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return m_mappings[index - NumStaticMappings];
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}
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}
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const Mapping& GetReceiveMapping(size_t i) const {
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ASSERT(i < m_num_recv);
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const size_t index = m_num_send + i;
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if (index < NumStaticMappings) {
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return m_static_mappings[index];
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} else {
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return m_mappings[index - NumStaticMappings];
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}
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}
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const Mapping& GetExchangeMapping(size_t i) const {
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ASSERT(i < m_num_exch);
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const size_t index = m_num_send + m_num_recv + i;
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if (index < NumStaticMappings) {
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return m_static_mappings[index];
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} else {
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return m_mappings[index - NumStaticMappings];
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}
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}
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private:
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KernelCore& kernel;
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Mapping m_static_mappings[NumStaticMappings];
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Mapping* m_mappings;
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u8 m_num_send;
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u8 m_num_recv;
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u8 m_num_exch;
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};
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public:
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explicit KSessionRequest(KernelCore& kernel_)
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: KAutoObject(kernel_), m_mappings(kernel_), m_thread(nullptr), m_server(nullptr),
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m_event(nullptr) {}
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static KSessionRequest* Create(KernelCore& kernel) {
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KSessionRequest* req = KSessionRequest::Allocate(kernel);
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if (req != nullptr) [[likely]] {
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KAutoObject::Create(req);
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}
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return req;
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}
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void Destroy() override {
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this->Finalize();
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KSessionRequest::Free(kernel, this);
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}
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void Initialize(KEvent* event, uintptr_t address, size_t size) {
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m_mappings.Initialize();
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m_thread = GetCurrentThreadPointer(kernel);
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m_event = event;
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m_address = address;
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m_size = size;
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m_thread->Open();
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if (m_event != nullptr) {
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m_event->Open();
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}
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}
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static void PostDestroy(uintptr_t arg) {}
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KThread* GetThread() const {
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return m_thread;
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}
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KEvent* GetEvent() const {
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return m_event;
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}
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uintptr_t GetAddress() const {
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return m_address;
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}
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size_t GetSize() const {
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return m_size;
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}
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KProcess* GetServerProcess() const {
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return m_server;
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}
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void SetServerProcess(KProcess* process) {
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m_server = process;
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m_server->Open();
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}
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void ClearThread() {
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m_thread = nullptr;
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}
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void ClearEvent() {
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m_event = nullptr;
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}
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size_t GetSendCount() const {
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return m_mappings.GetSendCount();
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}
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size_t GetReceiveCount() const {
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return m_mappings.GetReceiveCount();
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}
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size_t GetExchangeCount() const {
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return m_mappings.GetExchangeCount();
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}
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Result PushSend(VAddr client, VAddr server, size_t size, KMemoryState state) {
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return m_mappings.PushSend(client, server, size, state);
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}
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Result PushReceive(VAddr client, VAddr server, size_t size, KMemoryState state) {
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return m_mappings.PushReceive(client, server, size, state);
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}
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Result PushExchange(VAddr client, VAddr server, size_t size, KMemoryState state) {
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return m_mappings.PushExchange(client, server, size, state);
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}
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VAddr GetSendClientAddress(size_t i) const {
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return m_mappings.GetSendClientAddress(i);
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}
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VAddr GetSendServerAddress(size_t i) const {
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return m_mappings.GetSendServerAddress(i);
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}
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size_t GetSendSize(size_t i) const {
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return m_mappings.GetSendSize(i);
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}
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KMemoryState GetSendMemoryState(size_t i) const {
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return m_mappings.GetSendMemoryState(i);
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}
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VAddr GetReceiveClientAddress(size_t i) const {
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return m_mappings.GetReceiveClientAddress(i);
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}
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VAddr GetReceiveServerAddress(size_t i) const {
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return m_mappings.GetReceiveServerAddress(i);
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}
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size_t GetReceiveSize(size_t i) const {
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return m_mappings.GetReceiveSize(i);
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}
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KMemoryState GetReceiveMemoryState(size_t i) const {
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return m_mappings.GetReceiveMemoryState(i);
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}
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VAddr GetExchangeClientAddress(size_t i) const {
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return m_mappings.GetExchangeClientAddress(i);
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}
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VAddr GetExchangeServerAddress(size_t i) const {
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return m_mappings.GetExchangeServerAddress(i);
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}
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size_t GetExchangeSize(size_t i) const {
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return m_mappings.GetExchangeSize(i);
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}
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KMemoryState GetExchangeMemoryState(size_t i) const {
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return m_mappings.GetExchangeMemoryState(i);
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}
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private:
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// NOTE: This is public and virtual in Nintendo's kernel.
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void Finalize() {
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m_mappings.Finalize();
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if (m_thread) {
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m_thread->Close();
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}
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if (m_event) {
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m_event->Close();
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}
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if (m_server) {
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m_server->Close();
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}
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}
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private:
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SessionMappings m_mappings;
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KThread* m_thread;
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KProcess* m_server;
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KEvent* m_event;
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uintptr_t m_address;
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size_t m_size;
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};
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} // namespace Kernel
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