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i2c: implement driver init api

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This commit is contained in:
Michael Scire 2020-10-31 20:14:41 -07:00
parent 6f7502dfef
commit f27d6f2fd8
11 changed files with 449 additions and 9 deletions
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1
libraries/libstratosphere/include/stratosphere/i2c.hpp
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@ -21,5 +21,6 @@
#include <stratosphere/i2c/sf/i2c_sf_i_manager.hpp>
#include <stratosphere/i2c/server/i2c_server_api.hpp>
#include <stratosphere/i2c/driver/i2c_select_driver_api.hpp>
#include <stratosphere/i2c/driver/i2c_driver_service_api.hpp>
#include <stratosphere/i2c/driver/i2c_driver_client_api.hpp>
#include <stratosphere/i2c/i2c_api.hpp>

30
libraries/libstratosphere/include/stratosphere/i2c/driver/i2c_driver_service_api.hpp Normal file
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@ -0,0 +1,30 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours.hpp>
#include <stratosphere/i2c/i2c_types.hpp>
#include <stratosphere/i2c/driver/i2c_i2c_device_property.hpp>
#include <stratosphere/i2c/driver/i2c_i_i2c_driver.hpp>
namespace ams::i2c::driver {
void RegisterDriver(II2cDriver *driver);
void UnregisterDriver(II2cDriver *driver);
Result RegisterDeviceCode(DeviceCode device_code, I2cDeviceProperty *device);
bool UnregisterDeviceCode(DeviceCode device_code);
}

65
libraries/libstratosphere/source/i2c/driver/board/nintendo_nx/i2c_driver_api.cpp
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@ -14,6 +14,8 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
#include "impl/i2c_bus_manager.hpp"
#include "impl/i2c_device_property_manager.hpp"
namespace ams::i2c::driver::board::nintendo_nx {
@ -32,14 +34,75 @@ namespace ams::i2c::driver::board::nintendo_nx {
os::InterruptName interrupt_name;
const I2cDeviceDefinition *devices;
size_t num_devices;
constexpr bool IsPowerBus() const {
return this->device_code == DeviceCode_I2c5;
}
};
#include "i2c_bus_device_map.inc"
void CheckSpeedMode(SpeedMode speed_mode) {
switch (speed_mode) {
case SpeedMode_Standard: break;
case SpeedMode_Fast: break;
case SpeedMode_FastPlus: break;
case SpeedMode_HighSpeed: break;
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
void Initialize(impl::I2cBusAccessorManager &bus_manager, impl::I2cDevicePropertyManager &device_manager) {
/* Create an accessor for each bus. */
for (const auto &bus_def : I2cBusList) {
/* Check that the speed mode is valid. */
CheckSpeedMode(bus_def.speed_mode);
/* Find the bus. */
auto *bus = bus_manager.Find([&bus_def](const auto &it) {
return it.GetRegistersPhysicalAddress() == bus_def.registers_phys_addr;
});
/* If the bus doesn't exist, create it. */
if (bus == nullptr) {
/* Allocate the bus. */
bus = bus_manager.Allocate();
/* Initialize the bus. */
bus->Initialize(bus_def.registers_phys_addr, bus_def.registers_size, bus_def.interrupt_name, bus_def.IsPowerBus(), bus_def.speed_mode);
/* Register the bus. */
i2c::driver::RegisterDriver(bus);
}
/* Set the bus's device code. */
bus->RegisterDeviceCode(bus_def.device_code);
/* Allocate and register the devices for the bus. */
for (size_t i = 0; i < bus_def.num_devices; ++i) {
/* Get the device definition. */
const auto &entry = bus_def.devices[i];
/* Allocate the device. */
I2cDeviceProperty *device = device_manager.Allocate(entry.slave_address, AddressingMode_SevenBit);
/* Register the device with our bus. */
bus->RegisterDevice(device);
/* Register the device code with our driver. */
R_ABORT_UNLESS(i2c::driver::RegisterDeviceCode(entry.device_code, device));
}
}
}
}
void Initialize() {
/* TODO */
/* TODO: Should these be moved into getters? They're only used here, and they never destruct. */
static impl::I2cBusAccessorManager s_bus_accessor_manager(ddsf::GetMemoryResource());
static impl::I2cDevicePropertyManager s_device_manager(ddsf::GetMemoryResource());
return Initialize(s_bus_accessor_manager, s_device_manager);
}
}

8
libraries/libstratosphere/source/i2c/driver/board/nintendo_nx/impl/i2c_bus_accessor.hpp
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@ -73,14 +73,6 @@ namespace ams::i2c::driver::board::nintendo_nx::impl {
dd::PhysicalAddress GetRegistersPhysicalAddress() const { return this->registers_phys_addr; }
size_t GetRegistersSize() const { return this->registers_size; }
os::InterruptName GetInterruptName() const { return this->interrupt_name; }
void RemoveFrom(BusAccessorList &lst) {
lst.erase(lst.iterator_to(*this));
}
bool IsLinkedToList() const {
return this->bus_accessor_list_node.IsLinked();
}
private:
Result TryOpenRegulatorSession();

27
libraries/libstratosphere/source/i2c/driver/board/nintendo_nx/impl/i2c_bus_manager.hpp Normal file
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@ -0,0 +1,27 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stratosphere.hpp>
#include "i2c_bus_accessor.hpp"
#include "i2c_i_allocator.hpp"
namespace ams::i2c::driver::board::nintendo_nx::impl {
class I2cBusAccessorManager : public IAllocator<I2cBusAccessor::BusAccessorList> {
/* ... */
};
}

26
libraries/libstratosphere/source/i2c/driver/board/nintendo_nx/impl/i2c_device_property_manager.hpp Normal file
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@ -0,0 +1,26 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stratosphere.hpp>
#include "i2c_i_allocator.hpp"
namespace ams::i2c::driver::board::nintendo_nx::impl {
class I2cDevicePropertyManager : public IAllocator<I2cDeviceProperty::DevicePropertyList> {
/* ... */
};
}

70
libraries/libstratosphere/source/i2c/driver/board/nintendo_nx/impl/i2c_i_allocator.hpp Normal file
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@ -0,0 +1,70 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stratosphere.hpp>
namespace ams::i2c::driver::board::nintendo_nx::impl {
template<typename ListType>
class IAllocator {
private:
using T = typename ListType::value_type;
private:
ams::MemoryResource *memory_resource;
ListType list;
mutable os::SdkMutex list_lock;
public:
IAllocator(ams::MemoryResource *mr) : memory_resource(mr), list(), list_lock() { /* ... */ }
~IAllocator() {
/* TODO: Remove all entries, etc */
AMS_ABORT("BusAccessorManager not destructible");
}
template<typename ...Args>
T *Allocate(Args &&...args) {
std::scoped_lock lk(this->list_lock);
/* Allocate space for the object. */
void *storage = this->memory_resource->Allocate(sizeof(T), alignof(T));
AMS_ABORT_UNLESS(storage != nullptr);
/* Construct the object. */
T *t = new (static_cast<T *>(storage)) T(std::forward<Args>(args)...);
/* Link the object into our list. */
this->list.push_back(*t);
return t;
}
template<typename F>
T *Find(F f) {
std::scoped_lock lk(this->list_lock);
for (T &it : this->list) {
if (f(static_cast<const T &>(it))) {
return std::addressof(it);
}
}
return nullptr;
}
/* TODO: Support free */
};
}

30
libraries/libstratosphere/source/i2c/driver/i2c_driver_client_api.cpp Normal file
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@ -0,0 +1,30 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
#include "impl/i2c_driver_core.hpp"
namespace ams::i2c::driver {
void Initialize() {
return impl::InitializeDrivers();
}
void Finalize() {
return impl::FinalizeDrivers();
}
}

38
libraries/libstratosphere/source/i2c/driver/i2c_driver_service_api.cpp Normal file
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@ -0,0 +1,38 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
#include "impl/i2c_driver_core.hpp"
namespace ams::i2c::driver {
void RegisterDriver(II2cDriver *driver) {
return impl::RegisterDriver(driver);
}
void UnregisterDriver(II2cDriver *driver) {
return impl::UnregisterDriver(driver);
}
Result RegisterDeviceCode(DeviceCode device_code, I2cDeviceProperty *device) {
return impl::RegisterDeviceCode(device_code, device);
}
bool UnregisterDeviceCode(DeviceCode device_code) {
return impl::UnregisterDeviceCode(device_code);
}
}

130
libraries/libstratosphere/source/i2c/driver/impl/i2c_driver_core.cpp Normal file
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@ -0,0 +1,130 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
#include "i2c_driver_core.hpp"
namespace ams::i2c::driver::impl {
namespace {
constinit os::SdkMutex g_init_mutex;
constinit int g_init_count = 0;
i2c::driver::II2cDriver::List &GetI2cDriverList() {
static i2c::driver::II2cDriver::List s_driver_list;
return s_driver_list;
}
ddsf::DeviceCodeEntryManager &GetDeviceCodeEntryManager() {
static ddsf::DeviceCodeEntryManager s_device_code_entry_manager(ddsf::GetDeviceCodeEntryHolderMemoryResource());
return s_device_code_entry_manager;
}
}
void InitializeDrivers() {
std::scoped_lock lk(g_init_mutex);
/* Initialize all registered drivers, if this is our first initialization. */
if ((g_init_count++) == 0) {
for (auto &driver : GetI2cDriverList()) {
driver.SafeCastTo<II2cDriver>().InitializeDriver();
}
}
}
void FinalizeDrivers() {
std::scoped_lock lk(g_init_mutex);
/* If we have no remaining sessions, close. */
if ((--g_init_count) == 0) {
/* Reset all device code entries. */
GetDeviceCodeEntryManager().Reset();
/* Finalize all drivers. */
for (auto &driver : GetI2cDriverList()) {
driver.SafeCastTo<II2cDriver>().FinalizeDriver();
}
}
}
void RegisterDriver(II2cDriver *driver) {
AMS_ASSERT(driver != nullptr);
GetI2cDriverList().push_back(*driver);
}
void UnregisterDriver(II2cDriver *driver) {
AMS_ASSERT(driver != nullptr);
if (driver->IsLinkedToList()) {
auto &list = GetI2cDriverList();
list.erase(list.iterator_to(*driver));
}
}
Result RegisterDeviceCode(DeviceCode device_code, I2cDeviceProperty *device) {
AMS_ASSERT(device != nullptr);
R_TRY(GetDeviceCodeEntryManager().Add(device_code, device));
return ResultSuccess();
}
bool UnregisterDeviceCode(DeviceCode device_code) {
return GetDeviceCodeEntryManager().Remove(device_code);
}
Result FindDevice(I2cDeviceProperty **out, DeviceCode device_code) {
/* Validate output. */
AMS_ASSERT(out != nullptr);
/* Find the device. */
ddsf::IDevice *device;
R_TRY(GetDeviceCodeEntryManager().FindDevice(std::addressof(device), device_code));
/* Set output. */
*out = device->SafeCastToPointer<I2cDeviceProperty>();
return ResultSuccess();
}
Result FindDeviceByBusIndexAndAddress(I2cDeviceProperty **out, i2c::I2cBus bus_index, u16 slave_address) {
/* Validate output. */
AMS_ASSERT(out != nullptr);
/* Convert the bus index to a device code. */
const DeviceCode device_code = ConvertToDeviceCode(bus_index);
/* Find the device. */
bool found = false;
GetDeviceCodeEntryManager().ForEachEntry([&](ddsf::DeviceCodeEntry &entry) -> bool {
/* Convert the entry to an I2cDeviceProperty. */
auto &device = entry.GetDevice().SafeCastTo<I2cDeviceProperty>();
auto &driver = device.GetDriver().SafeCastTo<II2cDriver>();
/* Check if the device is the one we're looking for. */
if (driver.GetDeviceCode() == device_code && device.GetAddress() == slave_address) {
found = true;
*out = std::addressof(device);
return false;
}
return true;
});
/* Check that we found the pad. */
R_UNLESS(found, ddsf::ResultDeviceCodeNotFound());
return ResultSuccess();
}
}

33
libraries/libstratosphere/source/i2c/driver/impl/i2c_driver_core.hpp Normal file
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@ -0,0 +1,33 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stratosphere.hpp>
namespace ams::i2c::driver::impl {
void InitializeDrivers();
void FinalizeDrivers();
void RegisterDriver(II2cDriver *driver);
void UnregisterDriver(II2cDriver *driver);
Result RegisterDeviceCode(DeviceCode device_code, I2cDeviceProperty *device);
bool UnregisterDeviceCode(DeviceCode device_code);
Result FindDevice(I2cDeviceProperty **out, DeviceCode device_code);
Result FindDeviceByBusIndexAndAddress(I2cDeviceProperty **out, i2c::I2cBus bus_index, u16 slave_address);
}